56fe18e375
Check for NULL return values from jvmti_thread_state() and state_for() and return a JVM TI error code as appropriate. Reviewed-by: coleenp, swamyv
3372 lines
110 KiB
C++
3372 lines
110 KiB
C++
/*
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* Copyright 2003-2007 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*
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*/
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# include "incls/_precompiled.incl"
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# include "incls/_jvmtiEnv.cpp.incl"
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#define FIXLATER 0 // REMOVE this when completed.
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// FIXLATER: hook into JvmtiTrace
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#define TraceJVMTICalls false
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JvmtiEnv::JvmtiEnv() : JvmtiEnvBase() {
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}
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JvmtiEnv::~JvmtiEnv() {
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}
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JvmtiEnv*
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JvmtiEnv::create_a_jvmti() {
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return new JvmtiEnv();
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}
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// VM operation class to copy jni function table at safepoint.
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// More than one java threads or jvmti agents may be reading/
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// modifying jni function tables. To reduce the risk of bad
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// interaction b/w these threads it is copied at safepoint.
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class VM_JNIFunctionTableCopier : public VM_Operation {
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private:
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const struct JNINativeInterface_ *_function_table;
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public:
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VM_JNIFunctionTableCopier(const struct JNINativeInterface_ *func_tbl) {
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_function_table = func_tbl;
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};
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VMOp_Type type() const { return VMOp_JNIFunctionTableCopier; }
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void doit() {
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copy_jni_function_table(_function_table);
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};
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};
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//
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// Do not change the "prefix" marker below, everything above it is copied
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// unchanged into the filled stub, everything below is controlled by the
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// stub filler (only method bodies are carried forward, and then only for
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// functionality still in the spec).
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//
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// end file prefix
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//
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// Memory Management functions
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//
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// mem_ptr - pre-checked for NULL
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jvmtiError
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JvmtiEnv::Allocate(jlong size, unsigned char** mem_ptr) {
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return allocate(size, mem_ptr);
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} /* end Allocate */
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// mem - NULL is a valid value, must be checked
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jvmtiError
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JvmtiEnv::Deallocate(unsigned char* mem) {
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return deallocate(mem);
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} /* end Deallocate */
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// Threads_lock NOT held, java_thread not protected by lock
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// java_thread - pre-checked
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// data - NULL is a valid value, must be checked
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jvmtiError
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JvmtiEnv::SetThreadLocalStorage(JavaThread* java_thread, const void* data) {
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JvmtiThreadState* state = java_thread->jvmti_thread_state();
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if (state == NULL) {
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if (data == NULL) {
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// leaving state unset same as data set to NULL
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return JVMTI_ERROR_NONE;
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}
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// otherwise, create the state
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state = JvmtiThreadState::state_for(java_thread);
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if (state == NULL) {
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return JVMTI_ERROR_THREAD_NOT_ALIVE;
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}
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}
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state->env_thread_state(this)->set_agent_thread_local_storage_data((void*)data);
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return JVMTI_ERROR_NONE;
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} /* end SetThreadLocalStorage */
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// Threads_lock NOT held
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// thread - NOT pre-checked
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// data_ptr - pre-checked for NULL
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jvmtiError
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JvmtiEnv::GetThreadLocalStorage(jthread thread, void** data_ptr) {
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JavaThread* current_thread = JavaThread::current();
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if (thread == NULL) {
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JvmtiThreadState* state = current_thread->jvmti_thread_state();
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*data_ptr = (state == NULL) ? NULL :
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state->env_thread_state(this)->get_agent_thread_local_storage_data();
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} else {
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// jvmti_GetThreadLocalStorage is "in native" and doesn't transition
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// the thread to _thread_in_vm. However, when the TLS for a thread
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// other than the current thread is required we need to transition
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// from native so as to resolve the jthread.
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ThreadInVMfromNative __tiv(current_thread);
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__ENTRY(jvmtiError, JvmtiEnv::GetThreadLocalStorage , current_thread)
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debug_only(VMNativeEntryWrapper __vew;)
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oop thread_oop = JNIHandles::resolve_external_guard(thread);
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if (thread_oop == NULL) {
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return JVMTI_ERROR_INVALID_THREAD;
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}
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if (!thread_oop->is_a(SystemDictionary::thread_klass())) {
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return JVMTI_ERROR_INVALID_THREAD;
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}
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JavaThread* java_thread = java_lang_Thread::thread(thread_oop);
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if (java_thread == NULL) {
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return JVMTI_ERROR_THREAD_NOT_ALIVE;
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}
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JvmtiThreadState* state = java_thread->jvmti_thread_state();
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*data_ptr = (state == NULL) ? NULL :
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state->env_thread_state(this)->get_agent_thread_local_storage_data();
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}
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return JVMTI_ERROR_NONE;
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} /* end GetThreadLocalStorage */
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//
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// Class functions
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//
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// class_count_ptr - pre-checked for NULL
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// classes_ptr - pre-checked for NULL
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jvmtiError
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JvmtiEnv::GetLoadedClasses(jint* class_count_ptr, jclass** classes_ptr) {
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return JvmtiGetLoadedClasses::getLoadedClasses(this, class_count_ptr, classes_ptr);
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} /* end GetLoadedClasses */
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// initiating_loader - NULL is a valid value, must be checked
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// class_count_ptr - pre-checked for NULL
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// classes_ptr - pre-checked for NULL
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jvmtiError
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JvmtiEnv::GetClassLoaderClasses(jobject initiating_loader, jint* class_count_ptr, jclass** classes_ptr) {
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return JvmtiGetLoadedClasses::getClassLoaderClasses(this, initiating_loader,
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class_count_ptr, classes_ptr);
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} /* end GetClassLoaderClasses */
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// k_mirror - may be primitive, this must be checked
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// is_modifiable_class_ptr - pre-checked for NULL
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jvmtiError
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JvmtiEnv::IsModifiableClass(oop k_mirror, jboolean* is_modifiable_class_ptr) {
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*is_modifiable_class_ptr = VM_RedefineClasses::is_modifiable_class(k_mirror)?
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JNI_TRUE : JNI_FALSE;
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return JVMTI_ERROR_NONE;
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} /* end IsModifiableClass */
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// class_count - pre-checked to be greater than or equal to 0
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// classes - pre-checked for NULL
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jvmtiError
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JvmtiEnv::RetransformClasses(jint class_count, const jclass* classes) {
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//TODO: add locking
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int index;
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JavaThread* current_thread = JavaThread::current();
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ResourceMark rm(current_thread);
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jvmtiClassDefinition* class_definitions =
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NEW_RESOURCE_ARRAY(jvmtiClassDefinition, class_count);
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NULL_CHECK(class_definitions, JVMTI_ERROR_OUT_OF_MEMORY);
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for (index = 0; index < class_count; index++) {
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HandleMark hm(current_thread);
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jclass jcls = classes[index];
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oop k_mirror = JNIHandles::resolve_external_guard(jcls);
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if (k_mirror == NULL) {
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return JVMTI_ERROR_INVALID_CLASS;
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}
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if (!k_mirror->is_a(SystemDictionary::class_klass())) {
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return JVMTI_ERROR_INVALID_CLASS;
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}
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if (java_lang_Class::is_primitive(k_mirror)) {
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return JVMTI_ERROR_UNMODIFIABLE_CLASS;
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}
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klassOop k_oop = java_lang_Class::as_klassOop(k_mirror);
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KlassHandle klass(current_thread, k_oop);
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jint status = klass->jvmti_class_status();
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if (status & (JVMTI_CLASS_STATUS_ERROR)) {
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return JVMTI_ERROR_INVALID_CLASS;
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}
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if (status & (JVMTI_CLASS_STATUS_ARRAY)) {
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return JVMTI_ERROR_UNMODIFIABLE_CLASS;
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}
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instanceKlassHandle ikh(current_thread, k_oop);
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if (ikh->get_cached_class_file_bytes() == NULL) {
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// not cached, we need to reconstitute the class file from VM representation
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constantPoolHandle constants(current_thread, ikh->constants());
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ObjectLocker ol(constants, current_thread); // lock constant pool while we query it
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JvmtiClassFileReconstituter reconstituter(ikh);
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if (reconstituter.get_error() != JVMTI_ERROR_NONE) {
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return reconstituter.get_error();
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}
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class_definitions[index].class_byte_count = (jint)reconstituter.class_file_size();
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class_definitions[index].class_bytes = (unsigned char*)
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reconstituter.class_file_bytes();
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} else {
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// it is cached, get it from the cache
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class_definitions[index].class_byte_count = ikh->get_cached_class_file_len();
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class_definitions[index].class_bytes = ikh->get_cached_class_file_bytes();
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}
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class_definitions[index].klass = jcls;
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}
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VM_RedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_retransform);
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VMThread::execute(&op);
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return (op.check_error());
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} /* end RetransformClasses */
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// class_count - pre-checked to be greater than or equal to 0
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// class_definitions - pre-checked for NULL
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jvmtiError
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JvmtiEnv::RedefineClasses(jint class_count, const jvmtiClassDefinition* class_definitions) {
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//TODO: add locking
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VM_RedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_redefine);
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VMThread::execute(&op);
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return (op.check_error());
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} /* end RedefineClasses */
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//
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// Object functions
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//
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// size_ptr - pre-checked for NULL
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jvmtiError
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JvmtiEnv::GetObjectSize(jobject object, jlong* size_ptr) {
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oop mirror = JNIHandles::resolve_external_guard(object);
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NULL_CHECK(mirror, JVMTI_ERROR_INVALID_OBJECT);
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if (mirror->klass() == SystemDictionary::class_klass()) {
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if (!java_lang_Class::is_primitive(mirror)) {
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mirror = java_lang_Class::as_klassOop(mirror);
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assert(mirror != NULL, "class for non-primitive mirror must exist");
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}
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}
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*size_ptr = mirror->size() * wordSize;
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return JVMTI_ERROR_NONE;
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} /* end GetObjectSize */
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//
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// Method functions
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//
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// prefix - NULL is a valid value, must be checked
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jvmtiError
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JvmtiEnv::SetNativeMethodPrefix(const char* prefix) {
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return prefix == NULL?
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SetNativeMethodPrefixes(0, NULL) :
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SetNativeMethodPrefixes(1, (char**)&prefix);
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} /* end SetNativeMethodPrefix */
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// prefix_count - pre-checked to be greater than or equal to 0
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// prefixes - pre-checked for NULL
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jvmtiError
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JvmtiEnv::SetNativeMethodPrefixes(jint prefix_count, char** prefixes) {
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// Have to grab JVMTI thread state lock to be sure that some thread
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// isn't accessing the prefixes at the same time we are setting them.
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// No locks during VM bring-up.
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if (Threads::number_of_threads() == 0) {
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return set_native_method_prefixes(prefix_count, prefixes);
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} else {
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MutexLocker mu(JvmtiThreadState_lock);
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return set_native_method_prefixes(prefix_count, prefixes);
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}
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} /* end SetNativeMethodPrefixes */
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//
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// Event Management functions
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//
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// callbacks - NULL is a valid value, must be checked
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// size_of_callbacks - pre-checked to be greater than or equal to 0
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jvmtiError
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JvmtiEnv::SetEventCallbacks(const jvmtiEventCallbacks* callbacks, jint size_of_callbacks) {
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JvmtiEventController::set_event_callbacks(this, callbacks, size_of_callbacks);
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return JVMTI_ERROR_NONE;
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} /* end SetEventCallbacks */
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// event_thread - NULL is a valid value, must be checked
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jvmtiError
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JvmtiEnv::SetEventNotificationMode(jvmtiEventMode mode, jvmtiEvent event_type, jthread event_thread, ...) {
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JavaThread* java_thread = NULL;
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if (event_thread != NULL) {
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oop thread_oop = JNIHandles::resolve_external_guard(event_thread);
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if (thread_oop == NULL) {
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return JVMTI_ERROR_INVALID_THREAD;
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}
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if (!thread_oop->is_a(SystemDictionary::thread_klass())) {
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return JVMTI_ERROR_INVALID_THREAD;
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}
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java_thread = java_lang_Thread::thread(thread_oop);
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if (java_thread == NULL) {
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return JVMTI_ERROR_THREAD_NOT_ALIVE;
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}
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}
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// event_type must be valid
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if (!JvmtiEventController::is_valid_event_type(event_type)) {
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return JVMTI_ERROR_INVALID_EVENT_TYPE;
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}
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// global events cannot be controlled at thread level.
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if (java_thread != NULL && JvmtiEventController::is_global_event(event_type)) {
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return JVMTI_ERROR_ILLEGAL_ARGUMENT;
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}
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bool enabled = (mode == JVMTI_ENABLE);
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// assure that needed capabilities are present
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if (enabled && !JvmtiUtil::has_event_capability(event_type, get_capabilities())) {
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return JVMTI_ERROR_MUST_POSSESS_CAPABILITY;
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}
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if (event_type == JVMTI_EVENT_CLASS_FILE_LOAD_HOOK && enabled) {
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record_class_file_load_hook_enabled();
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}
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JvmtiEventController::set_user_enabled(this, java_thread, event_type, enabled);
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return JVMTI_ERROR_NONE;
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} /* end SetEventNotificationMode */
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//
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// Capability functions
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//
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// capabilities_ptr - pre-checked for NULL
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jvmtiError
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JvmtiEnv::GetPotentialCapabilities(jvmtiCapabilities* capabilities_ptr) {
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JvmtiManageCapabilities::get_potential_capabilities(get_capabilities(),
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get_prohibited_capabilities(),
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capabilities_ptr);
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return JVMTI_ERROR_NONE;
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} /* end GetPotentialCapabilities */
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// capabilities_ptr - pre-checked for NULL
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jvmtiError
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JvmtiEnv::AddCapabilities(const jvmtiCapabilities* capabilities_ptr) {
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return JvmtiManageCapabilities::add_capabilities(get_capabilities(),
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get_prohibited_capabilities(),
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capabilities_ptr,
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get_capabilities());
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} /* end AddCapabilities */
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// capabilities_ptr - pre-checked for NULL
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jvmtiError
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JvmtiEnv::RelinquishCapabilities(const jvmtiCapabilities* capabilities_ptr) {
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JvmtiManageCapabilities::relinquish_capabilities(get_capabilities(), capabilities_ptr, get_capabilities());
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return JVMTI_ERROR_NONE;
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} /* end RelinquishCapabilities */
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// capabilities_ptr - pre-checked for NULL
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jvmtiError
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JvmtiEnv::GetCapabilities(jvmtiCapabilities* capabilities_ptr) {
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JvmtiManageCapabilities::copy_capabilities(get_capabilities(), capabilities_ptr);
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return JVMTI_ERROR_NONE;
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} /* end GetCapabilities */
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//
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// Class Loader Search functions
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//
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// segment - pre-checked for NULL
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jvmtiError
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JvmtiEnv::AddToBootstrapClassLoaderSearch(const char* segment) {
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jvmtiPhase phase = get_phase();
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if (phase == JVMTI_PHASE_ONLOAD) {
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Arguments::append_sysclasspath(segment);
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return JVMTI_ERROR_NONE;
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} else {
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assert(phase == JVMTI_PHASE_LIVE, "sanity check");
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// create the zip entry
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ClassPathZipEntry* zip_entry = ClassLoader::create_class_path_zip_entry(segment);
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if (zip_entry == NULL) {
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return JVMTI_ERROR_ILLEGAL_ARGUMENT;
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}
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// lock the loader
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Thread* thread = Thread::current();
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HandleMark hm;
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Handle loader_lock = Handle(thread, SystemDictionary::system_loader_lock());
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ObjectLocker ol(loader_lock, thread);
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// add the jar file to the bootclasspath
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if (TraceClassLoading) {
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tty->print_cr("[Opened %s]", zip_entry->name());
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}
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ClassLoader::add_to_list(zip_entry);
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return JVMTI_ERROR_NONE;
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}
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} /* end AddToBootstrapClassLoaderSearch */
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// segment - pre-checked for NULL
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jvmtiError
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JvmtiEnv::AddToSystemClassLoaderSearch(const char* segment) {
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jvmtiPhase phase = get_phase();
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if (phase == JVMTI_PHASE_ONLOAD) {
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for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) {
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if (strcmp("java.class.path", p->key()) == 0) {
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p->append_value(segment);
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break;
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}
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}
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return JVMTI_ERROR_NONE;
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} else {
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HandleMark hm;
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assert(phase == JVMTI_PHASE_LIVE, "sanity check");
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// create the zip entry (which will open the zip file and hence
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// check that the segment is indeed a zip file).
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ClassPathZipEntry* zip_entry = ClassLoader::create_class_path_zip_entry(segment);
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if (zip_entry == NULL) {
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return JVMTI_ERROR_ILLEGAL_ARGUMENT;
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}
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delete zip_entry; // no longer needed
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// lock the loader
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Thread* THREAD = Thread::current();
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Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
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ObjectLocker ol(loader, THREAD);
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// need the path as java.lang.String
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Handle path = java_lang_String::create_from_str(segment, THREAD);
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if (HAS_PENDING_EXCEPTION) {
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CLEAR_PENDING_EXCEPTION;
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return JVMTI_ERROR_INTERNAL;
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}
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instanceKlassHandle loader_ik(THREAD, loader->klass());
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// Invoke the appendToClassPathForInstrumentation method - if the method
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// is not found it means the loader doesn't support adding to the class path
|
|
// in the live phase.
|
|
{
|
|
JavaValue res(T_VOID);
|
|
JavaCalls::call_special(&res,
|
|
loader,
|
|
loader_ik,
|
|
vmSymbolHandles::appendToClassPathForInstrumentation_name(),
|
|
vmSymbolHandles::appendToClassPathForInstrumentation_signature(),
|
|
path,
|
|
THREAD);
|
|
if (HAS_PENDING_EXCEPTION) {
|
|
symbolOop ex_name = PENDING_EXCEPTION->klass()->klass_part()->name();
|
|
CLEAR_PENDING_EXCEPTION;
|
|
|
|
if (ex_name == vmSymbols::java_lang_NoSuchMethodError()) {
|
|
return JVMTI_ERROR_CLASS_LOADER_UNSUPPORTED;
|
|
} else {
|
|
return JVMTI_ERROR_INTERNAL;
|
|
}
|
|
}
|
|
}
|
|
|
|
return JVMTI_ERROR_NONE;
|
|
}
|
|
} /* end AddToSystemClassLoaderSearch */
|
|
|
|
//
|
|
// General functions
|
|
//
|
|
|
|
// phase_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetPhase(jvmtiPhase* phase_ptr) {
|
|
*phase_ptr = get_phase();
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetPhase */
|
|
|
|
|
|
jvmtiError
|
|
JvmtiEnv::DisposeEnvironment() {
|
|
dispose();
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end DisposeEnvironment */
|
|
|
|
|
|
// data - NULL is a valid value, must be checked
|
|
jvmtiError
|
|
JvmtiEnv::SetEnvironmentLocalStorage(const void* data) {
|
|
set_env_local_storage(data);
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end SetEnvironmentLocalStorage */
|
|
|
|
|
|
// data_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetEnvironmentLocalStorage(void** data_ptr) {
|
|
*data_ptr = (void*)get_env_local_storage();
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetEnvironmentLocalStorage */
|
|
|
|
// version_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetVersionNumber(jint* version_ptr) {
|
|
*version_ptr = JVMTI_VERSION;
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetVersionNumber */
|
|
|
|
|
|
// name_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetErrorName(jvmtiError error, char** name_ptr) {
|
|
if (error < JVMTI_ERROR_NONE || error > JVMTI_ERROR_MAX) {
|
|
return JVMTI_ERROR_ILLEGAL_ARGUMENT;
|
|
}
|
|
const char *name = JvmtiUtil::error_name(error);
|
|
if (name == NULL) {
|
|
return JVMTI_ERROR_ILLEGAL_ARGUMENT;
|
|
}
|
|
size_t len = strlen(name) + 1;
|
|
jvmtiError err = allocate(len, (unsigned char**)name_ptr);
|
|
if (err == JVMTI_ERROR_NONE) {
|
|
memcpy(*name_ptr, name, len);
|
|
}
|
|
return err;
|
|
} /* end GetErrorName */
|
|
|
|
|
|
jvmtiError
|
|
JvmtiEnv::SetVerboseFlag(jvmtiVerboseFlag flag, jboolean value) {
|
|
switch (flag) {
|
|
case JVMTI_VERBOSE_OTHER:
|
|
// ignore
|
|
break;
|
|
case JVMTI_VERBOSE_CLASS:
|
|
TraceClassLoading = value != 0;
|
|
TraceClassUnloading = value != 0;
|
|
break;
|
|
case JVMTI_VERBOSE_GC:
|
|
PrintGC = value != 0;
|
|
TraceClassUnloading = value != 0;
|
|
break;
|
|
case JVMTI_VERBOSE_JNI:
|
|
PrintJNIResolving = value != 0;
|
|
break;
|
|
default:
|
|
return JVMTI_ERROR_ILLEGAL_ARGUMENT;
|
|
};
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end SetVerboseFlag */
|
|
|
|
|
|
// format_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetJLocationFormat(jvmtiJlocationFormat* format_ptr) {
|
|
*format_ptr = JVMTI_JLOCATION_JVMBCI;
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetJLocationFormat */
|
|
|
|
#ifndef JVMTI_KERNEL
|
|
|
|
//
|
|
// Thread functions
|
|
//
|
|
|
|
// Threads_lock NOT held
|
|
// thread - NOT pre-checked
|
|
// thread_state_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetThreadState(jthread thread, jint* thread_state_ptr) {
|
|
jint state;
|
|
oop thread_oop;
|
|
JavaThread* thr;
|
|
|
|
if (thread == NULL) {
|
|
thread_oop = JavaThread::current()->threadObj();
|
|
} else {
|
|
thread_oop = JNIHandles::resolve_external_guard(thread);
|
|
}
|
|
|
|
if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::thread_klass())) {
|
|
return JVMTI_ERROR_INVALID_THREAD;
|
|
}
|
|
|
|
// get most state bits
|
|
state = (jint)java_lang_Thread::get_thread_status(thread_oop);
|
|
|
|
// add more state bits
|
|
thr = java_lang_Thread::thread(thread_oop);
|
|
if (thr != NULL) {
|
|
JavaThreadState jts = thr->thread_state();
|
|
|
|
if (thr->is_being_ext_suspended()) {
|
|
state |= JVMTI_THREAD_STATE_SUSPENDED;
|
|
}
|
|
if (jts == _thread_in_native) {
|
|
state |= JVMTI_THREAD_STATE_IN_NATIVE;
|
|
}
|
|
OSThread* osThread = thr->osthread();
|
|
if (osThread != NULL && osThread->interrupted()) {
|
|
state |= JVMTI_THREAD_STATE_INTERRUPTED;
|
|
}
|
|
}
|
|
|
|
*thread_state_ptr = state;
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetThreadState */
|
|
|
|
|
|
// thread_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetCurrentThread(jthread* thread_ptr) {
|
|
JavaThread* current_thread = JavaThread::current();
|
|
*thread_ptr = (jthread)JNIHandles::make_local(current_thread, current_thread->threadObj());
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetCurrentThread */
|
|
|
|
|
|
// threads_count_ptr - pre-checked for NULL
|
|
// threads_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetAllThreads(jint* threads_count_ptr, jthread** threads_ptr) {
|
|
int nthreads = 0;
|
|
Handle *thread_objs = NULL;
|
|
ResourceMark rm;
|
|
HandleMark hm;
|
|
|
|
// enumerate threads (including agent threads)
|
|
ThreadsListEnumerator tle(Thread::current(), true);
|
|
nthreads = tle.num_threads();
|
|
*threads_count_ptr = nthreads;
|
|
|
|
if (nthreads == 0) {
|
|
*threads_ptr = NULL;
|
|
return JVMTI_ERROR_NONE;
|
|
}
|
|
|
|
thread_objs = NEW_RESOURCE_ARRAY(Handle, nthreads);
|
|
NULL_CHECK(thread_objs, JVMTI_ERROR_OUT_OF_MEMORY);
|
|
|
|
for (int i=0; i < nthreads; i++) {
|
|
thread_objs[i] = Handle(tle.get_threadObj(i));
|
|
}
|
|
|
|
// have to make global handles outside of Threads_lock
|
|
jthread *jthreads = new_jthreadArray(nthreads, thread_objs);
|
|
NULL_CHECK(jthreads, JVMTI_ERROR_OUT_OF_MEMORY);
|
|
|
|
*threads_ptr = jthreads;
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetAllThreads */
|
|
|
|
|
|
// Threads_lock NOT held, java_thread not protected by lock
|
|
// java_thread - pre-checked
|
|
jvmtiError
|
|
JvmtiEnv::SuspendThread(JavaThread* java_thread) {
|
|
// don't allow hidden thread suspend request.
|
|
if (java_thread->is_hidden_from_external_view()) {
|
|
return (JVMTI_ERROR_NONE);
|
|
}
|
|
|
|
{
|
|
MutexLockerEx ml(java_thread->SR_lock(), Mutex::_no_safepoint_check_flag);
|
|
if (java_thread->is_external_suspend()) {
|
|
// don't allow nested external suspend requests.
|
|
return (JVMTI_ERROR_THREAD_SUSPENDED);
|
|
}
|
|
if (java_thread->is_exiting()) { // thread is in the process of exiting
|
|
return (JVMTI_ERROR_THREAD_NOT_ALIVE);
|
|
}
|
|
java_thread->set_external_suspend();
|
|
}
|
|
|
|
if (!JvmtiSuspendControl::suspend(java_thread)) {
|
|
// the thread was in the process of exiting
|
|
return (JVMTI_ERROR_THREAD_NOT_ALIVE);
|
|
}
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end SuspendThread */
|
|
|
|
|
|
// request_count - pre-checked to be greater than or equal to 0
|
|
// request_list - pre-checked for NULL
|
|
// results - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::SuspendThreadList(jint request_count, const jthread* request_list, jvmtiError* results) {
|
|
int needSafepoint = 0; // > 0 if we need a safepoint
|
|
for (int i = 0; i < request_count; i++) {
|
|
JavaThread *java_thread = get_JavaThread(request_list[i]);
|
|
if (java_thread == NULL) {
|
|
results[i] = JVMTI_ERROR_INVALID_THREAD;
|
|
continue;
|
|
}
|
|
// the thread has not yet run or has exited (not on threads list)
|
|
if (java_thread->threadObj() == NULL) {
|
|
results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE;
|
|
continue;
|
|
}
|
|
if (java_lang_Thread::thread(java_thread->threadObj()) == NULL) {
|
|
results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE;
|
|
continue;
|
|
}
|
|
// don't allow hidden thread suspend request.
|
|
if (java_thread->is_hidden_from_external_view()) {
|
|
results[i] = JVMTI_ERROR_NONE; // indicate successful suspend
|
|
continue;
|
|
}
|
|
|
|
{
|
|
MutexLockerEx ml(java_thread->SR_lock(), Mutex::_no_safepoint_check_flag);
|
|
if (java_thread->is_external_suspend()) {
|
|
// don't allow nested external suspend requests.
|
|
results[i] = JVMTI_ERROR_THREAD_SUSPENDED;
|
|
continue;
|
|
}
|
|
if (java_thread->is_exiting()) { // thread is in the process of exiting
|
|
results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE;
|
|
continue;
|
|
}
|
|
java_thread->set_external_suspend();
|
|
}
|
|
if (java_thread->thread_state() == _thread_in_native) {
|
|
// We need to try and suspend native threads here. Threads in
|
|
// other states will self-suspend on their next transition.
|
|
if (!JvmtiSuspendControl::suspend(java_thread)) {
|
|
// The thread was in the process of exiting. Force another
|
|
// safepoint to make sure that this thread transitions.
|
|
needSafepoint++;
|
|
results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE;
|
|
continue;
|
|
}
|
|
} else {
|
|
needSafepoint++;
|
|
}
|
|
results[i] = JVMTI_ERROR_NONE; // indicate successful suspend
|
|
}
|
|
if (needSafepoint > 0) {
|
|
VM_ForceSafepoint vfs;
|
|
VMThread::execute(&vfs);
|
|
}
|
|
// per-thread suspend results returned via results parameter
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end SuspendThreadList */
|
|
|
|
|
|
// Threads_lock NOT held, java_thread not protected by lock
|
|
// java_thread - pre-checked
|
|
jvmtiError
|
|
JvmtiEnv::ResumeThread(JavaThread* java_thread) {
|
|
// don't allow hidden thread resume request.
|
|
if (java_thread->is_hidden_from_external_view()) {
|
|
return JVMTI_ERROR_NONE;
|
|
}
|
|
|
|
if (!java_thread->is_being_ext_suspended()) {
|
|
return JVMTI_ERROR_THREAD_NOT_SUSPENDED;
|
|
}
|
|
|
|
if (!JvmtiSuspendControl::resume(java_thread)) {
|
|
return JVMTI_ERROR_INTERNAL;
|
|
}
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end ResumeThread */
|
|
|
|
|
|
// request_count - pre-checked to be greater than or equal to 0
|
|
// request_list - pre-checked for NULL
|
|
// results - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::ResumeThreadList(jint request_count, const jthread* request_list, jvmtiError* results) {
|
|
for (int i = 0; i < request_count; i++) {
|
|
JavaThread *java_thread = get_JavaThread(request_list[i]);
|
|
if (java_thread == NULL) {
|
|
results[i] = JVMTI_ERROR_INVALID_THREAD;
|
|
continue;
|
|
}
|
|
// don't allow hidden thread resume request.
|
|
if (java_thread->is_hidden_from_external_view()) {
|
|
results[i] = JVMTI_ERROR_NONE; // indicate successful resume
|
|
continue;
|
|
}
|
|
if (!java_thread->is_being_ext_suspended()) {
|
|
results[i] = JVMTI_ERROR_THREAD_NOT_SUSPENDED;
|
|
continue;
|
|
}
|
|
|
|
if (!JvmtiSuspendControl::resume(java_thread)) {
|
|
results[i] = JVMTI_ERROR_INTERNAL;
|
|
continue;
|
|
}
|
|
|
|
results[i] = JVMTI_ERROR_NONE; // indicate successful suspend
|
|
}
|
|
// per-thread resume results returned via results parameter
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end ResumeThreadList */
|
|
|
|
|
|
// Threads_lock NOT held, java_thread not protected by lock
|
|
// java_thread - pre-checked
|
|
jvmtiError
|
|
JvmtiEnv::StopThread(JavaThread* java_thread, jobject exception) {
|
|
oop e = JNIHandles::resolve_external_guard(exception);
|
|
NULL_CHECK(e, JVMTI_ERROR_NULL_POINTER);
|
|
|
|
JavaThread::send_async_exception(java_thread->threadObj(), e);
|
|
|
|
return JVMTI_ERROR_NONE;
|
|
|
|
} /* end StopThread */
|
|
|
|
|
|
// Threads_lock NOT held
|
|
// thread - NOT pre-checked
|
|
jvmtiError
|
|
JvmtiEnv::InterruptThread(jthread thread) {
|
|
oop thread_oop = JNIHandles::resolve_external_guard(thread);
|
|
if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::thread_klass()))
|
|
return JVMTI_ERROR_INVALID_THREAD;
|
|
|
|
JavaThread* current_thread = JavaThread::current();
|
|
|
|
// Todo: this is a duplicate of JVM_Interrupt; share code in future
|
|
// Ensure that the C++ Thread and OSThread structures aren't freed before we operate
|
|
MutexLockerEx ml(current_thread->threadObj() == thread_oop ? NULL : Threads_lock);
|
|
// We need to re-resolve the java_thread, since a GC might have happened during the
|
|
// acquire of the lock
|
|
|
|
JavaThread* java_thread = java_lang_Thread::thread(JNIHandles::resolve_external_guard(thread));
|
|
NULL_CHECK(java_thread, JVMTI_ERROR_THREAD_NOT_ALIVE);
|
|
|
|
Thread::interrupt(java_thread);
|
|
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end InterruptThread */
|
|
|
|
|
|
// Threads_lock NOT held
|
|
// thread - NOT pre-checked
|
|
// info_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetThreadInfo(jthread thread, jvmtiThreadInfo* info_ptr) {
|
|
ResourceMark rm;
|
|
HandleMark hm;
|
|
|
|
JavaThread* current_thread = JavaThread::current();
|
|
|
|
// if thread is NULL the current thread is used
|
|
oop thread_oop;
|
|
if (thread == NULL) {
|
|
thread_oop = current_thread->threadObj();
|
|
} else {
|
|
thread_oop = JNIHandles::resolve_external_guard(thread);
|
|
}
|
|
if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::thread_klass()))
|
|
return JVMTI_ERROR_INVALID_THREAD;
|
|
|
|
Handle thread_obj(current_thread, thread_oop);
|
|
typeArrayHandle name;
|
|
ThreadPriority priority;
|
|
Handle thread_group;
|
|
Handle context_class_loader;
|
|
bool is_daemon;
|
|
|
|
{ MutexLocker mu(Threads_lock);
|
|
|
|
name = typeArrayHandle(current_thread, java_lang_Thread::name(thread_obj()));
|
|
priority = java_lang_Thread::priority(thread_obj());
|
|
thread_group = Handle(current_thread, java_lang_Thread::threadGroup(thread_obj()));
|
|
is_daemon = java_lang_Thread::is_daemon(thread_obj());
|
|
|
|
oop loader = java_lang_Thread::context_class_loader(thread_obj());
|
|
context_class_loader = Handle(current_thread, loader);
|
|
}
|
|
{ const char *n;
|
|
|
|
if (name() != NULL) {
|
|
n = UNICODE::as_utf8((jchar*) name->base(T_CHAR), name->length());
|
|
} else {
|
|
n = UNICODE::as_utf8(NULL, 0);
|
|
}
|
|
|
|
info_ptr->name = (char *) jvmtiMalloc(strlen(n)+1);
|
|
if (info_ptr->name == NULL)
|
|
return JVMTI_ERROR_OUT_OF_MEMORY;
|
|
|
|
strcpy(info_ptr->name, n);
|
|
}
|
|
info_ptr->is_daemon = is_daemon;
|
|
info_ptr->priority = priority;
|
|
|
|
info_ptr->context_class_loader = (context_class_loader.is_null()) ? NULL :
|
|
jni_reference(context_class_loader);
|
|
info_ptr->thread_group = jni_reference(thread_group);
|
|
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetThreadInfo */
|
|
|
|
|
|
// Threads_lock NOT held, java_thread not protected by lock
|
|
// java_thread - pre-checked
|
|
// owned_monitor_count_ptr - pre-checked for NULL
|
|
// owned_monitors_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetOwnedMonitorInfo(JavaThread* java_thread, jint* owned_monitor_count_ptr, jobject** owned_monitors_ptr) {
|
|
jvmtiError err = JVMTI_ERROR_NONE;
|
|
JavaThread* calling_thread = JavaThread::current();
|
|
|
|
// growable array of jvmti monitors info on the C-heap
|
|
GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list =
|
|
new (ResourceObj::C_HEAP) GrowableArray<jvmtiMonitorStackDepthInfo*>(1, true);
|
|
|
|
uint32_t debug_bits = 0;
|
|
if (is_thread_fully_suspended(java_thread, true, &debug_bits)) {
|
|
err = get_owned_monitors(calling_thread, java_thread, owned_monitors_list);
|
|
} else {
|
|
// JVMTI get monitors info at safepoint. Do not require target thread to
|
|
// be suspended.
|
|
VM_GetOwnedMonitorInfo op(this, calling_thread, java_thread, owned_monitors_list);
|
|
VMThread::execute(&op);
|
|
err = op.result();
|
|
}
|
|
jint owned_monitor_count = owned_monitors_list->length();
|
|
if (err == JVMTI_ERROR_NONE) {
|
|
if ((err = allocate(owned_monitor_count * sizeof(jobject *),
|
|
(unsigned char**)owned_monitors_ptr)) == JVMTI_ERROR_NONE) {
|
|
// copy into the returned array
|
|
for (int i = 0; i < owned_monitor_count; i++) {
|
|
(*owned_monitors_ptr)[i] =
|
|
((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->monitor;
|
|
}
|
|
*owned_monitor_count_ptr = owned_monitor_count;
|
|
}
|
|
}
|
|
// clean up.
|
|
for (int i = 0; i < owned_monitor_count; i++) {
|
|
deallocate((unsigned char*)owned_monitors_list->at(i));
|
|
}
|
|
delete owned_monitors_list;
|
|
|
|
return err;
|
|
} /* end GetOwnedMonitorInfo */
|
|
|
|
|
|
// Threads_lock NOT held, java_thread not protected by lock
|
|
// java_thread - pre-checked
|
|
// monitor_info_count_ptr - pre-checked for NULL
|
|
// monitor_info_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetOwnedMonitorStackDepthInfo(JavaThread* java_thread, jint* monitor_info_count_ptr, jvmtiMonitorStackDepthInfo** monitor_info_ptr) {
|
|
jvmtiError err = JVMTI_ERROR_NONE;
|
|
JavaThread* calling_thread = JavaThread::current();
|
|
|
|
// growable array of jvmti monitors info on the C-heap
|
|
GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list =
|
|
new (ResourceObj::C_HEAP) GrowableArray<jvmtiMonitorStackDepthInfo*>(1, true);
|
|
|
|
uint32_t debug_bits = 0;
|
|
if (is_thread_fully_suspended(java_thread, true, &debug_bits)) {
|
|
err = get_owned_monitors(calling_thread, java_thread, owned_monitors_list);
|
|
} else {
|
|
// JVMTI get owned monitors info at safepoint. Do not require target thread to
|
|
// be suspended.
|
|
VM_GetOwnedMonitorInfo op(this, calling_thread, java_thread, owned_monitors_list);
|
|
VMThread::execute(&op);
|
|
err = op.result();
|
|
}
|
|
|
|
jint owned_monitor_count = owned_monitors_list->length();
|
|
if (err == JVMTI_ERROR_NONE) {
|
|
if ((err = allocate(owned_monitor_count * sizeof(jvmtiMonitorStackDepthInfo),
|
|
(unsigned char**)monitor_info_ptr)) == JVMTI_ERROR_NONE) {
|
|
// copy to output array.
|
|
for (int i = 0; i < owned_monitor_count; i++) {
|
|
(*monitor_info_ptr)[i].monitor =
|
|
((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->monitor;
|
|
(*monitor_info_ptr)[i].stack_depth =
|
|
((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->stack_depth;
|
|
}
|
|
}
|
|
*monitor_info_count_ptr = owned_monitor_count;
|
|
}
|
|
|
|
// clean up.
|
|
for (int i = 0; i < owned_monitor_count; i++) {
|
|
deallocate((unsigned char*)owned_monitors_list->at(i));
|
|
}
|
|
delete owned_monitors_list;
|
|
|
|
return err;
|
|
} /* end GetOwnedMonitorStackDepthInfo */
|
|
|
|
|
|
// Threads_lock NOT held, java_thread not protected by lock
|
|
// java_thread - pre-checked
|
|
// monitor_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetCurrentContendedMonitor(JavaThread* java_thread, jobject* monitor_ptr) {
|
|
jvmtiError err = JVMTI_ERROR_NONE;
|
|
uint32_t debug_bits = 0;
|
|
JavaThread* calling_thread = JavaThread::current();
|
|
if (is_thread_fully_suspended(java_thread, true, &debug_bits)) {
|
|
err = get_current_contended_monitor(calling_thread, java_thread, monitor_ptr);
|
|
} else {
|
|
// get contended monitor information at safepoint.
|
|
VM_GetCurrentContendedMonitor op(this, calling_thread, java_thread, monitor_ptr);
|
|
VMThread::execute(&op);
|
|
err = op.result();
|
|
}
|
|
return err;
|
|
} /* end GetCurrentContendedMonitor */
|
|
|
|
|
|
// Threads_lock NOT held
|
|
// thread - NOT pre-checked
|
|
// proc - pre-checked for NULL
|
|
// arg - NULL is a valid value, must be checked
|
|
jvmtiError
|
|
JvmtiEnv::RunAgentThread(jthread thread, jvmtiStartFunction proc, const void* arg, jint priority) {
|
|
oop thread_oop = JNIHandles::resolve_external_guard(thread);
|
|
if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::thread_klass())) {
|
|
return JVMTI_ERROR_INVALID_THREAD;
|
|
}
|
|
if (priority < JVMTI_THREAD_MIN_PRIORITY || priority > JVMTI_THREAD_MAX_PRIORITY) {
|
|
return JVMTI_ERROR_INVALID_PRIORITY;
|
|
}
|
|
|
|
//Thread-self
|
|
JavaThread* current_thread = JavaThread::current();
|
|
|
|
Handle thread_hndl(current_thread, thread_oop);
|
|
{
|
|
MutexLocker mu(Threads_lock); // grab Threads_lock
|
|
|
|
JvmtiAgentThread *new_thread = new JvmtiAgentThread(this, proc, arg);
|
|
|
|
// At this point it may be possible that no osthread was created for the
|
|
// JavaThread due to lack of memory.
|
|
if (new_thread == NULL || new_thread->osthread() == NULL) {
|
|
if (new_thread) delete new_thread;
|
|
return JVMTI_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
java_lang_Thread::set_thread(thread_hndl(), new_thread);
|
|
java_lang_Thread::set_priority(thread_hndl(), (ThreadPriority)priority);
|
|
java_lang_Thread::set_daemon(thread_hndl());
|
|
|
|
new_thread->set_threadObj(thread_hndl());
|
|
Threads::add(new_thread);
|
|
Thread::start(new_thread);
|
|
} // unlock Threads_lock
|
|
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end RunAgentThread */
|
|
|
|
//
|
|
// Thread Group functions
|
|
//
|
|
|
|
// group_count_ptr - pre-checked for NULL
|
|
// groups_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetTopThreadGroups(jint* group_count_ptr, jthreadGroup** groups_ptr) {
|
|
JavaThread* current_thread = JavaThread::current();
|
|
|
|
// Only one top level thread group now.
|
|
*group_count_ptr = 1;
|
|
|
|
// Allocate memory to store global-refs to the thread groups.
|
|
// Assume this area is freed by caller.
|
|
*groups_ptr = (jthreadGroup *) jvmtiMalloc((sizeof(jthreadGroup)) * (*group_count_ptr));
|
|
|
|
NULL_CHECK(*groups_ptr, JVMTI_ERROR_OUT_OF_MEMORY);
|
|
|
|
// Convert oop to Handle, then convert Handle to global-ref.
|
|
{
|
|
HandleMark hm(current_thread);
|
|
Handle system_thread_group(current_thread, Universe::system_thread_group());
|
|
*groups_ptr[0] = jni_reference(system_thread_group);
|
|
}
|
|
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetTopThreadGroups */
|
|
|
|
|
|
// info_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetThreadGroupInfo(jthreadGroup group, jvmtiThreadGroupInfo* info_ptr) {
|
|
ResourceMark rm;
|
|
HandleMark hm;
|
|
|
|
JavaThread* current_thread = JavaThread::current();
|
|
|
|
Handle group_obj (current_thread, JNIHandles::resolve_external_guard(group));
|
|
NULL_CHECK(group_obj(), JVMTI_ERROR_INVALID_THREAD_GROUP);
|
|
|
|
typeArrayHandle name;
|
|
Handle parent_group;
|
|
bool is_daemon;
|
|
ThreadPriority max_priority;
|
|
|
|
{ MutexLocker mu(Threads_lock);
|
|
|
|
name = typeArrayHandle(current_thread,
|
|
java_lang_ThreadGroup::name(group_obj()));
|
|
parent_group = Handle(current_thread, java_lang_ThreadGroup::parent(group_obj()));
|
|
is_daemon = java_lang_ThreadGroup::is_daemon(group_obj());
|
|
max_priority = java_lang_ThreadGroup::maxPriority(group_obj());
|
|
}
|
|
|
|
info_ptr->is_daemon = is_daemon;
|
|
info_ptr->max_priority = max_priority;
|
|
info_ptr->parent = jni_reference(parent_group);
|
|
|
|
if (name() != NULL) {
|
|
const char* n = UNICODE::as_utf8((jchar*) name->base(T_CHAR), name->length());
|
|
info_ptr->name = (char *)jvmtiMalloc(strlen(n)+1);
|
|
NULL_CHECK(info_ptr->name, JVMTI_ERROR_OUT_OF_MEMORY);
|
|
strcpy(info_ptr->name, n);
|
|
} else {
|
|
info_ptr->name = NULL;
|
|
}
|
|
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetThreadGroupInfo */
|
|
|
|
|
|
// thread_count_ptr - pre-checked for NULL
|
|
// threads_ptr - pre-checked for NULL
|
|
// group_count_ptr - pre-checked for NULL
|
|
// groups_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetThreadGroupChildren(jthreadGroup group, jint* thread_count_ptr, jthread** threads_ptr, jint* group_count_ptr, jthreadGroup** groups_ptr) {
|
|
JavaThread* current_thread = JavaThread::current();
|
|
oop group_obj = (oop) JNIHandles::resolve_external_guard(group);
|
|
NULL_CHECK(group_obj, JVMTI_ERROR_INVALID_THREAD_GROUP);
|
|
|
|
Handle *thread_objs = NULL;
|
|
Handle *group_objs = NULL;
|
|
int nthreads = 0;
|
|
int ngroups = 0;
|
|
int hidden_threads = 0;
|
|
|
|
ResourceMark rm;
|
|
HandleMark hm;
|
|
|
|
Handle group_hdl(current_thread, group_obj);
|
|
|
|
{ MutexLocker mu(Threads_lock);
|
|
|
|
nthreads = java_lang_ThreadGroup::nthreads(group_hdl());
|
|
ngroups = java_lang_ThreadGroup::ngroups(group_hdl());
|
|
|
|
if (nthreads > 0) {
|
|
objArrayOop threads = java_lang_ThreadGroup::threads(group_hdl());
|
|
assert(nthreads <= threads->length(), "too many threads");
|
|
thread_objs = NEW_RESOURCE_ARRAY(Handle,nthreads);
|
|
for (int i=0, j=0; i<nthreads; i++) {
|
|
oop thread_obj = threads->obj_at(i);
|
|
assert(thread_obj != NULL, "thread_obj is NULL");
|
|
JavaThread *javathread = java_lang_Thread::thread(thread_obj);
|
|
// Filter out hidden java threads.
|
|
if (javathread != NULL && javathread->is_hidden_from_external_view()) {
|
|
hidden_threads++;
|
|
continue;
|
|
}
|
|
thread_objs[j++] = Handle(current_thread, thread_obj);
|
|
}
|
|
nthreads -= hidden_threads;
|
|
}
|
|
if (ngroups > 0) {
|
|
objArrayOop groups = java_lang_ThreadGroup::groups(group_hdl());
|
|
assert(ngroups <= groups->length(), "too many threads");
|
|
group_objs = NEW_RESOURCE_ARRAY(Handle,ngroups);
|
|
for (int i=0; i<ngroups; i++) {
|
|
oop group_obj = groups->obj_at(i);
|
|
assert(group_obj != NULL, "group_obj != NULL");
|
|
group_objs[i] = Handle(current_thread, group_obj);
|
|
}
|
|
}
|
|
}
|
|
|
|
// have to make global handles outside of Threads_lock
|
|
*group_count_ptr = ngroups;
|
|
*thread_count_ptr = nthreads;
|
|
*threads_ptr = new_jthreadArray(nthreads, thread_objs);
|
|
*groups_ptr = new_jthreadGroupArray(ngroups, group_objs);
|
|
if ((nthreads > 0) && (*threads_ptr == NULL)) {
|
|
return JVMTI_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
if ((ngroups > 0) && (*groups_ptr == NULL)) {
|
|
return JVMTI_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetThreadGroupChildren */
|
|
|
|
|
|
//
|
|
// Stack Frame functions
|
|
//
|
|
|
|
// Threads_lock NOT held, java_thread not protected by lock
|
|
// java_thread - pre-checked
|
|
// max_frame_count - pre-checked to be greater than or equal to 0
|
|
// frame_buffer - pre-checked for NULL
|
|
// count_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetStackTrace(JavaThread* java_thread, jint start_depth, jint max_frame_count, jvmtiFrameInfo* frame_buffer, jint* count_ptr) {
|
|
jvmtiError err = JVMTI_ERROR_NONE;
|
|
uint32_t debug_bits = 0;
|
|
if (is_thread_fully_suspended(java_thread, true, &debug_bits)) {
|
|
err = get_stack_trace(java_thread, start_depth, max_frame_count, frame_buffer, count_ptr);
|
|
} else {
|
|
// JVMTI get stack trace at safepoint. Do not require target thread to
|
|
// be suspended.
|
|
VM_GetStackTrace op(this, java_thread, start_depth, max_frame_count, frame_buffer, count_ptr);
|
|
VMThread::execute(&op);
|
|
err = op.result();
|
|
}
|
|
|
|
return err;
|
|
} /* end GetStackTrace */
|
|
|
|
|
|
// max_frame_count - pre-checked to be greater than or equal to 0
|
|
// stack_info_ptr - pre-checked for NULL
|
|
// thread_count_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetAllStackTraces(jint max_frame_count, jvmtiStackInfo** stack_info_ptr, jint* thread_count_ptr) {
|
|
jvmtiError err = JVMTI_ERROR_NONE;
|
|
JavaThread* calling_thread = JavaThread::current();
|
|
|
|
// JVMTI get stack traces at safepoint.
|
|
VM_GetAllStackTraces op(this, calling_thread, max_frame_count);
|
|
VMThread::execute(&op);
|
|
*thread_count_ptr = op.final_thread_count();
|
|
*stack_info_ptr = op.stack_info();
|
|
err = op.result();
|
|
return err;
|
|
} /* end GetAllStackTraces */
|
|
|
|
|
|
// thread_count - pre-checked to be greater than or equal to 0
|
|
// thread_list - pre-checked for NULL
|
|
// max_frame_count - pre-checked to be greater than or equal to 0
|
|
// stack_info_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetThreadListStackTraces(jint thread_count, const jthread* thread_list, jint max_frame_count, jvmtiStackInfo** stack_info_ptr) {
|
|
jvmtiError err = JVMTI_ERROR_NONE;
|
|
// JVMTI get stack traces at safepoint.
|
|
VM_GetThreadListStackTraces op(this, thread_count, thread_list, max_frame_count);
|
|
VMThread::execute(&op);
|
|
err = op.result();
|
|
if (err == JVMTI_ERROR_NONE) {
|
|
*stack_info_ptr = op.stack_info();
|
|
}
|
|
return err;
|
|
} /* end GetThreadListStackTraces */
|
|
|
|
|
|
// Threads_lock NOT held, java_thread not protected by lock
|
|
// java_thread - pre-checked
|
|
// count_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetFrameCount(JavaThread* java_thread, jint* count_ptr) {
|
|
jvmtiError err = JVMTI_ERROR_NONE;
|
|
|
|
// retrieve or create JvmtiThreadState.
|
|
JvmtiThreadState* state = JvmtiThreadState::state_for(java_thread);
|
|
if (state == NULL) {
|
|
return JVMTI_ERROR_THREAD_NOT_ALIVE;
|
|
}
|
|
uint32_t debug_bits = 0;
|
|
if (is_thread_fully_suspended(java_thread, true, &debug_bits)) {
|
|
err = get_frame_count(state, count_ptr);
|
|
} else {
|
|
// get java stack frame count at safepoint.
|
|
VM_GetFrameCount op(this, state, count_ptr);
|
|
VMThread::execute(&op);
|
|
err = op.result();
|
|
}
|
|
return err;
|
|
} /* end GetFrameCount */
|
|
|
|
|
|
// Threads_lock NOT held, java_thread not protected by lock
|
|
// java_thread - pre-checked
|
|
jvmtiError
|
|
JvmtiEnv::PopFrame(JavaThread* java_thread) {
|
|
JavaThread* current_thread = JavaThread::current();
|
|
HandleMark hm(current_thread);
|
|
uint32_t debug_bits = 0;
|
|
|
|
// retrieve or create the state
|
|
JvmtiThreadState* state = JvmtiThreadState::state_for(java_thread);
|
|
if (state == NULL) {
|
|
return JVMTI_ERROR_THREAD_NOT_ALIVE;
|
|
}
|
|
|
|
// Check if java_thread is fully suspended
|
|
if (!is_thread_fully_suspended(java_thread, true /* wait for suspend completion */, &debug_bits)) {
|
|
return JVMTI_ERROR_THREAD_NOT_SUSPENDED;
|
|
}
|
|
// Check to see if a PopFrame was already in progress
|
|
if (java_thread->popframe_condition() != JavaThread::popframe_inactive) {
|
|
// Probably possible for JVMTI clients to trigger this, but the
|
|
// JPDA backend shouldn't allow this to happen
|
|
return JVMTI_ERROR_INTERNAL;
|
|
}
|
|
|
|
{
|
|
// Was workaround bug
|
|
// 4812902: popFrame hangs if the method is waiting at a synchronize
|
|
// Catch this condition and return an error to avoid hanging.
|
|
// Now JVMTI spec allows an implementation to bail out with an opaque frame error.
|
|
OSThread* osThread = java_thread->osthread();
|
|
if (osThread->get_state() == MONITOR_WAIT) {
|
|
return JVMTI_ERROR_OPAQUE_FRAME;
|
|
}
|
|
}
|
|
|
|
{
|
|
ResourceMark rm(current_thread);
|
|
// Check if there are more than one Java frame in this thread, that the top two frames
|
|
// are Java (not native) frames, and that there is no intervening VM frame
|
|
int frame_count = 0;
|
|
bool is_interpreted[2];
|
|
intptr_t *frame_sp[2];
|
|
// The 2-nd arg of constructor is needed to stop iterating at java entry frame.
|
|
for (vframeStream vfs(java_thread, true); !vfs.at_end(); vfs.next()) {
|
|
methodHandle mh(current_thread, vfs.method());
|
|
if (mh->is_native()) return(JVMTI_ERROR_OPAQUE_FRAME);
|
|
is_interpreted[frame_count] = vfs.is_interpreted_frame();
|
|
frame_sp[frame_count] = vfs.frame_id();
|
|
if (++frame_count > 1) break;
|
|
}
|
|
if (frame_count < 2) {
|
|
// We haven't found two adjacent non-native Java frames on the top.
|
|
// There can be two situations here:
|
|
// 1. There are no more java frames
|
|
// 2. Two top java frames are separated by non-java native frames
|
|
if(vframeFor(java_thread, 1) == NULL) {
|
|
return JVMTI_ERROR_NO_MORE_FRAMES;
|
|
} else {
|
|
// Intervening non-java native or VM frames separate java frames.
|
|
// Current implementation does not support this. See bug #5031735.
|
|
// In theory it is possible to pop frames in such cases.
|
|
return JVMTI_ERROR_OPAQUE_FRAME;
|
|
}
|
|
}
|
|
|
|
// If any of the top 2 frames is a compiled one, need to deoptimize it
|
|
for (int i = 0; i < 2; i++) {
|
|
if (!is_interpreted[i]) {
|
|
VM_DeoptimizeFrame op(java_thread, frame_sp[i]);
|
|
VMThread::execute(&op);
|
|
}
|
|
}
|
|
|
|
// Update the thread state to reflect that the top frame is popped
|
|
// so that cur_stack_depth is maintained properly and all frameIDs
|
|
// are invalidated.
|
|
// The current frame will be popped later when the suspended thread
|
|
// is resumed and right before returning from VM to Java.
|
|
// (see call_VM_base() in assembler_<cpu>.cpp).
|
|
|
|
// It's fine to update the thread state here because no JVMTI events
|
|
// shall be posted for this PopFrame.
|
|
|
|
state->update_for_pop_top_frame();
|
|
java_thread->set_popframe_condition(JavaThread::popframe_pending_bit);
|
|
// Set pending step flag for this popframe and it is cleared when next
|
|
// step event is posted.
|
|
state->set_pending_step_for_popframe();
|
|
}
|
|
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end PopFrame */
|
|
|
|
|
|
// Threads_lock NOT held, java_thread not protected by lock
|
|
// java_thread - pre-checked
|
|
// java_thread - unchecked
|
|
// depth - pre-checked as non-negative
|
|
// method_ptr - pre-checked for NULL
|
|
// location_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetFrameLocation(JavaThread* java_thread, jint depth, jmethodID* method_ptr, jlocation* location_ptr) {
|
|
jvmtiError err = JVMTI_ERROR_NONE;
|
|
uint32_t debug_bits = 0;
|
|
|
|
if (is_thread_fully_suspended(java_thread, true, &debug_bits)) {
|
|
err = get_frame_location(java_thread, depth, method_ptr, location_ptr);
|
|
} else {
|
|
// JVMTI get java stack frame location at safepoint.
|
|
VM_GetFrameLocation op(this, java_thread, depth, method_ptr, location_ptr);
|
|
VMThread::execute(&op);
|
|
err = op.result();
|
|
}
|
|
return err;
|
|
} /* end GetFrameLocation */
|
|
|
|
|
|
// Threads_lock NOT held, java_thread not protected by lock
|
|
// java_thread - pre-checked
|
|
// java_thread - unchecked
|
|
// depth - pre-checked as non-negative
|
|
jvmtiError
|
|
JvmtiEnv::NotifyFramePop(JavaThread* java_thread, jint depth) {
|
|
ResourceMark rm;
|
|
uint32_t debug_bits = 0;
|
|
|
|
JvmtiThreadState *state = JvmtiThreadState::state_for(java_thread);
|
|
if (state == NULL) {
|
|
return JVMTI_ERROR_THREAD_NOT_ALIVE;
|
|
}
|
|
|
|
if (!JvmtiEnv::is_thread_fully_suspended(java_thread, true, &debug_bits)) {
|
|
return JVMTI_ERROR_THREAD_NOT_SUSPENDED;
|
|
}
|
|
|
|
if (TraceJVMTICalls) {
|
|
JvmtiSuspendControl::print();
|
|
}
|
|
|
|
vframe *vf = vframeFor(java_thread, depth);
|
|
if (vf == NULL) {
|
|
return JVMTI_ERROR_NO_MORE_FRAMES;
|
|
}
|
|
|
|
if (!vf->is_java_frame() || ((javaVFrame*) vf)->method()->is_native()) {
|
|
return JVMTI_ERROR_OPAQUE_FRAME;
|
|
}
|
|
|
|
assert(vf->frame_pointer() != NULL, "frame pointer mustn't be NULL");
|
|
|
|
int frame_number = state->count_frames() - depth;
|
|
state->env_thread_state(this)->set_frame_pop(frame_number);
|
|
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end NotifyFramePop */
|
|
|
|
|
|
//
|
|
// Force Early Return functions
|
|
//
|
|
|
|
// Threads_lock NOT held, java_thread not protected by lock
|
|
// java_thread - pre-checked
|
|
jvmtiError
|
|
JvmtiEnv::ForceEarlyReturnObject(JavaThread* java_thread, jobject value) {
|
|
jvalue val;
|
|
val.l = value;
|
|
return force_early_return(java_thread, val, atos);
|
|
} /* end ForceEarlyReturnObject */
|
|
|
|
|
|
// Threads_lock NOT held, java_thread not protected by lock
|
|
// java_thread - pre-checked
|
|
jvmtiError
|
|
JvmtiEnv::ForceEarlyReturnInt(JavaThread* java_thread, jint value) {
|
|
jvalue val;
|
|
val.i = value;
|
|
return force_early_return(java_thread, val, itos);
|
|
} /* end ForceEarlyReturnInt */
|
|
|
|
|
|
// Threads_lock NOT held, java_thread not protected by lock
|
|
// java_thread - pre-checked
|
|
jvmtiError
|
|
JvmtiEnv::ForceEarlyReturnLong(JavaThread* java_thread, jlong value) {
|
|
jvalue val;
|
|
val.j = value;
|
|
return force_early_return(java_thread, val, ltos);
|
|
} /* end ForceEarlyReturnLong */
|
|
|
|
|
|
// Threads_lock NOT held, java_thread not protected by lock
|
|
// java_thread - pre-checked
|
|
jvmtiError
|
|
JvmtiEnv::ForceEarlyReturnFloat(JavaThread* java_thread, jfloat value) {
|
|
jvalue val;
|
|
val.f = value;
|
|
return force_early_return(java_thread, val, ftos);
|
|
} /* end ForceEarlyReturnFloat */
|
|
|
|
|
|
// Threads_lock NOT held, java_thread not protected by lock
|
|
// java_thread - pre-checked
|
|
jvmtiError
|
|
JvmtiEnv::ForceEarlyReturnDouble(JavaThread* java_thread, jdouble value) {
|
|
jvalue val;
|
|
val.d = value;
|
|
return force_early_return(java_thread, val, dtos);
|
|
} /* end ForceEarlyReturnDouble */
|
|
|
|
|
|
// Threads_lock NOT held, java_thread not protected by lock
|
|
// java_thread - pre-checked
|
|
jvmtiError
|
|
JvmtiEnv::ForceEarlyReturnVoid(JavaThread* java_thread) {
|
|
jvalue val;
|
|
val.j = 0L;
|
|
return force_early_return(java_thread, val, vtos);
|
|
} /* end ForceEarlyReturnVoid */
|
|
|
|
|
|
//
|
|
// Heap functions
|
|
//
|
|
|
|
// klass - NULL is a valid value, must be checked
|
|
// initial_object - NULL is a valid value, must be checked
|
|
// callbacks - pre-checked for NULL
|
|
// user_data - NULL is a valid value, must be checked
|
|
jvmtiError
|
|
JvmtiEnv::FollowReferences(jint heap_filter, jclass klass, jobject initial_object, const jvmtiHeapCallbacks* callbacks, const void* user_data) {
|
|
// check klass if provided
|
|
klassOop k_oop = NULL;
|
|
if (klass != NULL) {
|
|
oop k_mirror = JNIHandles::resolve_external_guard(klass);
|
|
if (k_mirror == NULL) {
|
|
return JVMTI_ERROR_INVALID_CLASS;
|
|
}
|
|
if (java_lang_Class::is_primitive(k_mirror)) {
|
|
return JVMTI_ERROR_NONE;
|
|
}
|
|
k_oop = java_lang_Class::as_klassOop(k_mirror);
|
|
if (k_oop == NULL) {
|
|
return JVMTI_ERROR_INVALID_CLASS;
|
|
}
|
|
}
|
|
|
|
Thread *thread = Thread::current();
|
|
HandleMark hm(thread);
|
|
KlassHandle kh (thread, k_oop);
|
|
|
|
TraceTime t("FollowReferences", TraceJVMTIObjectTagging);
|
|
JvmtiTagMap::tag_map_for(this)->follow_references(heap_filter, kh, initial_object, callbacks, user_data);
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end FollowReferences */
|
|
|
|
|
|
// klass - NULL is a valid value, must be checked
|
|
// callbacks - pre-checked for NULL
|
|
// user_data - NULL is a valid value, must be checked
|
|
jvmtiError
|
|
JvmtiEnv::IterateThroughHeap(jint heap_filter, jclass klass, const jvmtiHeapCallbacks* callbacks, const void* user_data) {
|
|
// check klass if provided
|
|
klassOop k_oop = NULL;
|
|
if (klass != NULL) {
|
|
oop k_mirror = JNIHandles::resolve_external_guard(klass);
|
|
if (k_mirror == NULL) {
|
|
return JVMTI_ERROR_INVALID_CLASS;
|
|
}
|
|
if (java_lang_Class::is_primitive(k_mirror)) {
|
|
return JVMTI_ERROR_NONE;
|
|
}
|
|
k_oop = java_lang_Class::as_klassOop(k_mirror);
|
|
if (k_oop == NULL) {
|
|
return JVMTI_ERROR_INVALID_CLASS;
|
|
}
|
|
}
|
|
|
|
Thread *thread = Thread::current();
|
|
HandleMark hm(thread);
|
|
KlassHandle kh (thread, k_oop);
|
|
|
|
TraceTime t("IterateThroughHeap", TraceJVMTIObjectTagging);
|
|
JvmtiTagMap::tag_map_for(this)->iterate_through_heap(heap_filter, kh, callbacks, user_data);
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end IterateThroughHeap */
|
|
|
|
|
|
// tag_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetTag(jobject object, jlong* tag_ptr) {
|
|
oop o = JNIHandles::resolve_external_guard(object);
|
|
NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT);
|
|
*tag_ptr = JvmtiTagMap::tag_map_for(this)->get_tag(object);
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetTag */
|
|
|
|
|
|
jvmtiError
|
|
JvmtiEnv::SetTag(jobject object, jlong tag) {
|
|
oop o = JNIHandles::resolve_external_guard(object);
|
|
NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT);
|
|
JvmtiTagMap::tag_map_for(this)->set_tag(object, tag);
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end SetTag */
|
|
|
|
|
|
// tag_count - pre-checked to be greater than or equal to 0
|
|
// tags - pre-checked for NULL
|
|
// count_ptr - pre-checked for NULL
|
|
// object_result_ptr - NULL is a valid value, must be checked
|
|
// tag_result_ptr - NULL is a valid value, must be checked
|
|
jvmtiError
|
|
JvmtiEnv::GetObjectsWithTags(jint tag_count, const jlong* tags, jint* count_ptr, jobject** object_result_ptr, jlong** tag_result_ptr) {
|
|
TraceTime t("GetObjectsWithTags", TraceJVMTIObjectTagging);
|
|
return JvmtiTagMap::tag_map_for(this)->get_objects_with_tags((jlong*)tags, tag_count, count_ptr, object_result_ptr, tag_result_ptr);
|
|
} /* end GetObjectsWithTags */
|
|
|
|
|
|
jvmtiError
|
|
JvmtiEnv::ForceGarbageCollection() {
|
|
Universe::heap()->collect(GCCause::_jvmti_force_gc);
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end ForceGarbageCollection */
|
|
|
|
|
|
//
|
|
// Heap (1.0) functions
|
|
//
|
|
|
|
// object_reference_callback - pre-checked for NULL
|
|
// user_data - NULL is a valid value, must be checked
|
|
jvmtiError
|
|
JvmtiEnv::IterateOverObjectsReachableFromObject(jobject object, jvmtiObjectReferenceCallback object_reference_callback, const void* user_data) {
|
|
oop o = JNIHandles::resolve_external_guard(object);
|
|
NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT);
|
|
JvmtiTagMap::tag_map_for(this)->iterate_over_objects_reachable_from_object(object, object_reference_callback, user_data);
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end IterateOverObjectsReachableFromObject */
|
|
|
|
|
|
// heap_root_callback - NULL is a valid value, must be checked
|
|
// stack_ref_callback - NULL is a valid value, must be checked
|
|
// object_ref_callback - NULL is a valid value, must be checked
|
|
// user_data - NULL is a valid value, must be checked
|
|
jvmtiError
|
|
JvmtiEnv::IterateOverReachableObjects(jvmtiHeapRootCallback heap_root_callback, jvmtiStackReferenceCallback stack_ref_callback, jvmtiObjectReferenceCallback object_ref_callback, const void* user_data) {
|
|
TraceTime t("IterateOverReachableObjects", TraceJVMTIObjectTagging);
|
|
JvmtiTagMap::tag_map_for(this)->iterate_over_reachable_objects(heap_root_callback, stack_ref_callback, object_ref_callback, user_data);
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end IterateOverReachableObjects */
|
|
|
|
|
|
// heap_object_callback - pre-checked for NULL
|
|
// user_data - NULL is a valid value, must be checked
|
|
jvmtiError
|
|
JvmtiEnv::IterateOverHeap(jvmtiHeapObjectFilter object_filter, jvmtiHeapObjectCallback heap_object_callback, const void* user_data) {
|
|
TraceTime t("IterateOverHeap", TraceJVMTIObjectTagging);
|
|
Thread *thread = Thread::current();
|
|
HandleMark hm(thread);
|
|
JvmtiTagMap::tag_map_for(this)->iterate_over_heap(object_filter, KlassHandle(), heap_object_callback, user_data);
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end IterateOverHeap */
|
|
|
|
|
|
// k_mirror - may be primitive, this must be checked
|
|
// heap_object_callback - pre-checked for NULL
|
|
// user_data - NULL is a valid value, must be checked
|
|
jvmtiError
|
|
JvmtiEnv::IterateOverInstancesOfClass(oop k_mirror, jvmtiHeapObjectFilter object_filter, jvmtiHeapObjectCallback heap_object_callback, const void* user_data) {
|
|
if (java_lang_Class::is_primitive(k_mirror)) {
|
|
// DO PRIMITIVE CLASS PROCESSING
|
|
return JVMTI_ERROR_NONE;
|
|
}
|
|
klassOop k_oop = java_lang_Class::as_klassOop(k_mirror);
|
|
if (k_oop == NULL) {
|
|
return JVMTI_ERROR_INVALID_CLASS;
|
|
}
|
|
Thread *thread = Thread::current();
|
|
HandleMark hm(thread);
|
|
KlassHandle klass (thread, k_oop);
|
|
TraceTime t("IterateOverInstancesOfClass", TraceJVMTIObjectTagging);
|
|
JvmtiTagMap::tag_map_for(this)->iterate_over_heap(object_filter, klass, heap_object_callback, user_data);
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end IterateOverInstancesOfClass */
|
|
|
|
|
|
//
|
|
// Local Variable functions
|
|
//
|
|
|
|
// Threads_lock NOT held, java_thread not protected by lock
|
|
// java_thread - pre-checked
|
|
// java_thread - unchecked
|
|
// depth - pre-checked as non-negative
|
|
// value_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetLocalObject(JavaThread* java_thread, jint depth, jint slot, jobject* value_ptr) {
|
|
JavaThread* current_thread = JavaThread::current();
|
|
// rm object is created to clean up the javaVFrame created in
|
|
// doit_prologue(), but after doit() is finished with it.
|
|
ResourceMark rm(current_thread);
|
|
|
|
VM_GetOrSetLocal op(java_thread, current_thread, depth, slot);
|
|
VMThread::execute(&op);
|
|
jvmtiError err = op.result();
|
|
if (err != JVMTI_ERROR_NONE) {
|
|
return err;
|
|
} else {
|
|
*value_ptr = op.value().l;
|
|
return JVMTI_ERROR_NONE;
|
|
}
|
|
} /* end GetLocalObject */
|
|
|
|
|
|
// Threads_lock NOT held, java_thread not protected by lock
|
|
// java_thread - pre-checked
|
|
// java_thread - unchecked
|
|
// depth - pre-checked as non-negative
|
|
// value_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetLocalInt(JavaThread* java_thread, jint depth, jint slot, jint* value_ptr) {
|
|
// rm object is created to clean up the javaVFrame created in
|
|
// doit_prologue(), but after doit() is finished with it.
|
|
ResourceMark rm;
|
|
|
|
VM_GetOrSetLocal op(java_thread, depth, slot, T_INT);
|
|
VMThread::execute(&op);
|
|
*value_ptr = op.value().i;
|
|
return op.result();
|
|
} /* end GetLocalInt */
|
|
|
|
|
|
// Threads_lock NOT held, java_thread not protected by lock
|
|
// java_thread - pre-checked
|
|
// java_thread - unchecked
|
|
// depth - pre-checked as non-negative
|
|
// value_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetLocalLong(JavaThread* java_thread, jint depth, jint slot, jlong* value_ptr) {
|
|
// rm object is created to clean up the javaVFrame created in
|
|
// doit_prologue(), but after doit() is finished with it.
|
|
ResourceMark rm;
|
|
|
|
VM_GetOrSetLocal op(java_thread, depth, slot, T_LONG);
|
|
VMThread::execute(&op);
|
|
*value_ptr = op.value().j;
|
|
return op.result();
|
|
} /* end GetLocalLong */
|
|
|
|
|
|
// Threads_lock NOT held, java_thread not protected by lock
|
|
// java_thread - pre-checked
|
|
// java_thread - unchecked
|
|
// depth - pre-checked as non-negative
|
|
// value_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetLocalFloat(JavaThread* java_thread, jint depth, jint slot, jfloat* value_ptr) {
|
|
// rm object is created to clean up the javaVFrame created in
|
|
// doit_prologue(), but after doit() is finished with it.
|
|
ResourceMark rm;
|
|
|
|
VM_GetOrSetLocal op(java_thread, depth, slot, T_FLOAT);
|
|
VMThread::execute(&op);
|
|
*value_ptr = op.value().f;
|
|
return op.result();
|
|
} /* end GetLocalFloat */
|
|
|
|
|
|
// Threads_lock NOT held, java_thread not protected by lock
|
|
// java_thread - pre-checked
|
|
// java_thread - unchecked
|
|
// depth - pre-checked as non-negative
|
|
// value_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetLocalDouble(JavaThread* java_thread, jint depth, jint slot, jdouble* value_ptr) {
|
|
// rm object is created to clean up the javaVFrame created in
|
|
// doit_prologue(), but after doit() is finished with it.
|
|
ResourceMark rm;
|
|
|
|
VM_GetOrSetLocal op(java_thread, depth, slot, T_DOUBLE);
|
|
VMThread::execute(&op);
|
|
*value_ptr = op.value().d;
|
|
return op.result();
|
|
} /* end GetLocalDouble */
|
|
|
|
|
|
// Threads_lock NOT held, java_thread not protected by lock
|
|
// java_thread - pre-checked
|
|
// java_thread - unchecked
|
|
// depth - pre-checked as non-negative
|
|
jvmtiError
|
|
JvmtiEnv::SetLocalObject(JavaThread* java_thread, jint depth, jint slot, jobject value) {
|
|
// rm object is created to clean up the javaVFrame created in
|
|
// doit_prologue(), but after doit() is finished with it.
|
|
ResourceMark rm;
|
|
jvalue val;
|
|
val.l = value;
|
|
VM_GetOrSetLocal op(java_thread, depth, slot, T_OBJECT, val);
|
|
VMThread::execute(&op);
|
|
return op.result();
|
|
} /* end SetLocalObject */
|
|
|
|
|
|
// Threads_lock NOT held, java_thread not protected by lock
|
|
// java_thread - pre-checked
|
|
// java_thread - unchecked
|
|
// depth - pre-checked as non-negative
|
|
jvmtiError
|
|
JvmtiEnv::SetLocalInt(JavaThread* java_thread, jint depth, jint slot, jint value) {
|
|
// rm object is created to clean up the javaVFrame created in
|
|
// doit_prologue(), but after doit() is finished with it.
|
|
ResourceMark rm;
|
|
jvalue val;
|
|
val.i = value;
|
|
VM_GetOrSetLocal op(java_thread, depth, slot, T_INT, val);
|
|
VMThread::execute(&op);
|
|
return op.result();
|
|
} /* end SetLocalInt */
|
|
|
|
|
|
// Threads_lock NOT held, java_thread not protected by lock
|
|
// java_thread - pre-checked
|
|
// java_thread - unchecked
|
|
// depth - pre-checked as non-negative
|
|
jvmtiError
|
|
JvmtiEnv::SetLocalLong(JavaThread* java_thread, jint depth, jint slot, jlong value) {
|
|
// rm object is created to clean up the javaVFrame created in
|
|
// doit_prologue(), but after doit() is finished with it.
|
|
ResourceMark rm;
|
|
jvalue val;
|
|
val.j = value;
|
|
VM_GetOrSetLocal op(java_thread, depth, slot, T_LONG, val);
|
|
VMThread::execute(&op);
|
|
return op.result();
|
|
} /* end SetLocalLong */
|
|
|
|
|
|
// Threads_lock NOT held, java_thread not protected by lock
|
|
// java_thread - pre-checked
|
|
// java_thread - unchecked
|
|
// depth - pre-checked as non-negative
|
|
jvmtiError
|
|
JvmtiEnv::SetLocalFloat(JavaThread* java_thread, jint depth, jint slot, jfloat value) {
|
|
// rm object is created to clean up the javaVFrame created in
|
|
// doit_prologue(), but after doit() is finished with it.
|
|
ResourceMark rm;
|
|
jvalue val;
|
|
val.f = value;
|
|
VM_GetOrSetLocal op(java_thread, depth, slot, T_FLOAT, val);
|
|
VMThread::execute(&op);
|
|
return op.result();
|
|
} /* end SetLocalFloat */
|
|
|
|
|
|
// Threads_lock NOT held, java_thread not protected by lock
|
|
// java_thread - pre-checked
|
|
// java_thread - unchecked
|
|
// depth - pre-checked as non-negative
|
|
jvmtiError
|
|
JvmtiEnv::SetLocalDouble(JavaThread* java_thread, jint depth, jint slot, jdouble value) {
|
|
// rm object is created to clean up the javaVFrame created in
|
|
// doit_prologue(), but after doit() is finished with it.
|
|
ResourceMark rm;
|
|
jvalue val;
|
|
val.d = value;
|
|
VM_GetOrSetLocal op(java_thread, depth, slot, T_DOUBLE, val);
|
|
VMThread::execute(&op);
|
|
return op.result();
|
|
} /* end SetLocalDouble */
|
|
|
|
|
|
//
|
|
// Breakpoint functions
|
|
//
|
|
|
|
// method_oop - pre-checked for validity, but may be NULL meaning obsolete method
|
|
jvmtiError
|
|
JvmtiEnv::SetBreakpoint(methodOop method_oop, jlocation location) {
|
|
NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
|
|
if (location < 0) { // simple invalid location check first
|
|
return JVMTI_ERROR_INVALID_LOCATION;
|
|
}
|
|
// verify that the breakpoint is not past the end of the method
|
|
if (location >= (jlocation) method_oop->code_size()) {
|
|
return JVMTI_ERROR_INVALID_LOCATION;
|
|
}
|
|
|
|
ResourceMark rm;
|
|
JvmtiBreakpoint bp(method_oop, location);
|
|
JvmtiBreakpoints& jvmti_breakpoints = JvmtiCurrentBreakpoints::get_jvmti_breakpoints();
|
|
if (jvmti_breakpoints.set(bp) == JVMTI_ERROR_DUPLICATE)
|
|
return JVMTI_ERROR_DUPLICATE;
|
|
|
|
if (TraceJVMTICalls) {
|
|
jvmti_breakpoints.print();
|
|
}
|
|
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end SetBreakpoint */
|
|
|
|
|
|
// method_oop - pre-checked for validity, but may be NULL meaning obsolete method
|
|
jvmtiError
|
|
JvmtiEnv::ClearBreakpoint(methodOop method_oop, jlocation location) {
|
|
NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
|
|
|
|
if (location < 0) { // simple invalid location check first
|
|
return JVMTI_ERROR_INVALID_LOCATION;
|
|
}
|
|
|
|
// verify that the breakpoint is not past the end of the method
|
|
if (location >= (jlocation) method_oop->code_size()) {
|
|
return JVMTI_ERROR_INVALID_LOCATION;
|
|
}
|
|
|
|
JvmtiBreakpoint bp(method_oop, location);
|
|
|
|
JvmtiBreakpoints& jvmti_breakpoints = JvmtiCurrentBreakpoints::get_jvmti_breakpoints();
|
|
if (jvmti_breakpoints.clear(bp) == JVMTI_ERROR_NOT_FOUND)
|
|
return JVMTI_ERROR_NOT_FOUND;
|
|
|
|
if (TraceJVMTICalls) {
|
|
jvmti_breakpoints.print();
|
|
}
|
|
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end ClearBreakpoint */
|
|
|
|
|
|
//
|
|
// Watched Field functions
|
|
//
|
|
|
|
jvmtiError
|
|
JvmtiEnv::SetFieldAccessWatch(fieldDescriptor* fdesc_ptr) {
|
|
// make sure we haven't set this watch before
|
|
if (fdesc_ptr->is_field_access_watched()) return JVMTI_ERROR_DUPLICATE;
|
|
fdesc_ptr->set_is_field_access_watched(true);
|
|
update_klass_field_access_flag(fdesc_ptr);
|
|
|
|
JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_ACCESS, true);
|
|
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end SetFieldAccessWatch */
|
|
|
|
|
|
jvmtiError
|
|
JvmtiEnv::ClearFieldAccessWatch(fieldDescriptor* fdesc_ptr) {
|
|
// make sure we have a watch to clear
|
|
if (!fdesc_ptr->is_field_access_watched()) return JVMTI_ERROR_NOT_FOUND;
|
|
fdesc_ptr->set_is_field_access_watched(false);
|
|
update_klass_field_access_flag(fdesc_ptr);
|
|
|
|
JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_ACCESS, false);
|
|
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end ClearFieldAccessWatch */
|
|
|
|
|
|
jvmtiError
|
|
JvmtiEnv::SetFieldModificationWatch(fieldDescriptor* fdesc_ptr) {
|
|
// make sure we haven't set this watch before
|
|
if (fdesc_ptr->is_field_modification_watched()) return JVMTI_ERROR_DUPLICATE;
|
|
fdesc_ptr->set_is_field_modification_watched(true);
|
|
update_klass_field_access_flag(fdesc_ptr);
|
|
|
|
JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_MODIFICATION, true);
|
|
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end SetFieldModificationWatch */
|
|
|
|
|
|
jvmtiError
|
|
JvmtiEnv::ClearFieldModificationWatch(fieldDescriptor* fdesc_ptr) {
|
|
// make sure we have a watch to clear
|
|
if (!fdesc_ptr->is_field_modification_watched()) return JVMTI_ERROR_NOT_FOUND;
|
|
fdesc_ptr->set_is_field_modification_watched(false);
|
|
update_klass_field_access_flag(fdesc_ptr);
|
|
|
|
JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_MODIFICATION, false);
|
|
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end ClearFieldModificationWatch */
|
|
|
|
//
|
|
// Class functions
|
|
//
|
|
|
|
|
|
// k_mirror - may be primitive, this must be checked
|
|
// signature_ptr - NULL is a valid value, must be checked
|
|
// generic_ptr - NULL is a valid value, must be checked
|
|
jvmtiError
|
|
JvmtiEnv::GetClassSignature(oop k_mirror, char** signature_ptr, char** generic_ptr) {
|
|
ResourceMark rm;
|
|
bool isPrimitive = java_lang_Class::is_primitive(k_mirror);
|
|
klassOop k = NULL;
|
|
if (!isPrimitive) {
|
|
k = java_lang_Class::as_klassOop(k_mirror);
|
|
NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS);
|
|
}
|
|
if (signature_ptr != NULL) {
|
|
char* result = NULL;
|
|
if (isPrimitive) {
|
|
char tchar = type2char(java_lang_Class::primitive_type(k_mirror));
|
|
result = (char*) jvmtiMalloc(2);
|
|
result[0] = tchar;
|
|
result[1] = '\0';
|
|
} else {
|
|
const char* class_sig = Klass::cast(k)->signature_name();
|
|
result = (char *) jvmtiMalloc(strlen(class_sig)+1);
|
|
strcpy(result, class_sig);
|
|
}
|
|
*signature_ptr = result;
|
|
}
|
|
if (generic_ptr != NULL) {
|
|
*generic_ptr = NULL;
|
|
if (!isPrimitive && Klass::cast(k)->oop_is_instance()) {
|
|
symbolOop soo = instanceKlass::cast(k)->generic_signature();
|
|
if (soo != NULL) {
|
|
const char *gen_sig = soo->as_C_string();
|
|
if (gen_sig != NULL) {
|
|
char* gen_result;
|
|
jvmtiError err = allocate(strlen(gen_sig) + 1,
|
|
(unsigned char **)&gen_result);
|
|
if (err != JVMTI_ERROR_NONE) {
|
|
return err;
|
|
}
|
|
strcpy(gen_result, gen_sig);
|
|
*generic_ptr = gen_result;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetClassSignature */
|
|
|
|
|
|
// k_mirror - may be primitive, this must be checked
|
|
// status_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetClassStatus(oop k_mirror, jint* status_ptr) {
|
|
jint result = 0;
|
|
if (java_lang_Class::is_primitive(k_mirror)) {
|
|
result |= JVMTI_CLASS_STATUS_PRIMITIVE;
|
|
} else {
|
|
klassOop k = java_lang_Class::as_klassOop(k_mirror);
|
|
NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS);
|
|
result = Klass::cast(k)->jvmti_class_status();
|
|
}
|
|
*status_ptr = result;
|
|
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetClassStatus */
|
|
|
|
|
|
// k_mirror - may be primitive, this must be checked
|
|
// source_name_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetSourceFileName(oop k_mirror, char** source_name_ptr) {
|
|
if (java_lang_Class::is_primitive(k_mirror)) {
|
|
return JVMTI_ERROR_ABSENT_INFORMATION;
|
|
}
|
|
klassOop k_klass = java_lang_Class::as_klassOop(k_mirror);
|
|
NULL_CHECK(k_klass, JVMTI_ERROR_INVALID_CLASS);
|
|
|
|
if (!Klass::cast(k_klass)->oop_is_instance()) {
|
|
return JVMTI_ERROR_ABSENT_INFORMATION;
|
|
}
|
|
|
|
symbolOop sfnOop = instanceKlass::cast(k_klass)->source_file_name();
|
|
NULL_CHECK(sfnOop, JVMTI_ERROR_ABSENT_INFORMATION);
|
|
{
|
|
JavaThread* current_thread = JavaThread::current();
|
|
ResourceMark rm(current_thread);
|
|
const char* sfncp = (const char*) sfnOop->as_C_string();
|
|
*source_name_ptr = (char *) jvmtiMalloc(strlen(sfncp)+1);
|
|
strcpy(*source_name_ptr, sfncp);
|
|
}
|
|
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetSourceFileName */
|
|
|
|
|
|
// k_mirror - may be primitive, this must be checked
|
|
// modifiers_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetClassModifiers(oop k_mirror, jint* modifiers_ptr) {
|
|
JavaThread* current_thread = JavaThread::current();
|
|
jint result = 0;
|
|
if (!java_lang_Class::is_primitive(k_mirror)) {
|
|
klassOop k = java_lang_Class::as_klassOop(k_mirror);
|
|
NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS);
|
|
assert((Klass::cast(k)->oop_is_instance() || Klass::cast(k)->oop_is_array()), "should be an instance or an array klass");
|
|
result = Klass::cast(k)->compute_modifier_flags(current_thread);
|
|
JavaThread* THREAD = current_thread; // pass to macros
|
|
if (HAS_PENDING_EXCEPTION) {
|
|
CLEAR_PENDING_EXCEPTION;
|
|
return JVMTI_ERROR_INTERNAL;
|
|
};
|
|
|
|
// Reset the deleted ACC_SUPER bit ( deleted in compute_modifier_flags()).
|
|
if(Klass::cast(k)->is_super()) {
|
|
result |= JVM_ACC_SUPER;
|
|
}
|
|
} else {
|
|
result = (JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC);
|
|
}
|
|
*modifiers_ptr = result;
|
|
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetClassModifiers */
|
|
|
|
|
|
// k_mirror - may be primitive, this must be checked
|
|
// method_count_ptr - pre-checked for NULL
|
|
// methods_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetClassMethods(oop k_mirror, jint* method_count_ptr, jmethodID** methods_ptr) {
|
|
JavaThread* current_thread = JavaThread::current();
|
|
HandleMark hm(current_thread);
|
|
|
|
if (java_lang_Class::is_primitive(k_mirror)) {
|
|
*method_count_ptr = 0;
|
|
*methods_ptr = (jmethodID*) jvmtiMalloc(0 * sizeof(jmethodID));
|
|
return JVMTI_ERROR_NONE;
|
|
}
|
|
klassOop k = java_lang_Class::as_klassOop(k_mirror);
|
|
NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS);
|
|
|
|
// Return CLASS_NOT_PREPARED error as per JVMTI spec.
|
|
if (!(Klass::cast(k)->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) {
|
|
return JVMTI_ERROR_CLASS_NOT_PREPARED;
|
|
}
|
|
|
|
if (!Klass::cast(k)->oop_is_instance()) {
|
|
*method_count_ptr = 0;
|
|
*methods_ptr = (jmethodID*) jvmtiMalloc(0 * sizeof(jmethodID));
|
|
return JVMTI_ERROR_NONE;
|
|
}
|
|
instanceKlassHandle instanceK_h(current_thread, k);
|
|
// Allocate the result and fill it in
|
|
int result_length = instanceK_h->methods()->length();
|
|
jmethodID* result_list = (jmethodID*)jvmtiMalloc(result_length * sizeof(jmethodID));
|
|
int index;
|
|
if (JvmtiExport::can_maintain_original_method_order()) {
|
|
// Use the original method ordering indices stored in the class, so we can emit
|
|
// jmethodIDs in the order they appeared in the class file
|
|
for (index = 0; index < result_length; index++) {
|
|
methodOop m = methodOop(instanceK_h->methods()->obj_at(index));
|
|
int original_index = instanceK_h->method_ordering()->int_at(index);
|
|
assert(original_index >= 0 && original_index < result_length, "invalid original method index");
|
|
jmethodID id = m->jmethod_id();
|
|
result_list[original_index] = id;
|
|
}
|
|
} else {
|
|
// otherwise just copy in any order
|
|
for (index = 0; index < result_length; index++) {
|
|
methodOop m = methodOop(instanceK_h->methods()->obj_at(index));
|
|
jmethodID id = m->jmethod_id();
|
|
result_list[index] = id;
|
|
}
|
|
}
|
|
// Fill in return value.
|
|
*method_count_ptr = result_length;
|
|
*methods_ptr = result_list;
|
|
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetClassMethods */
|
|
|
|
|
|
// k_mirror - may be primitive, this must be checked
|
|
// field_count_ptr - pre-checked for NULL
|
|
// fields_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetClassFields(oop k_mirror, jint* field_count_ptr, jfieldID** fields_ptr) {
|
|
if (java_lang_Class::is_primitive(k_mirror)) {
|
|
*field_count_ptr = 0;
|
|
*fields_ptr = (jfieldID*) jvmtiMalloc(0 * sizeof(jfieldID));
|
|
return JVMTI_ERROR_NONE;
|
|
}
|
|
JavaThread* current_thread = JavaThread::current();
|
|
HandleMark hm(current_thread);
|
|
klassOop k = java_lang_Class::as_klassOop(k_mirror);
|
|
NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS);
|
|
|
|
// Return CLASS_NOT_PREPARED error as per JVMTI spec.
|
|
if (!(Klass::cast(k)->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) {
|
|
return JVMTI_ERROR_CLASS_NOT_PREPARED;
|
|
}
|
|
|
|
if (!Klass::cast(k)->oop_is_instance()) {
|
|
*field_count_ptr = 0;
|
|
*fields_ptr = (jfieldID*) jvmtiMalloc(0 * sizeof(jfieldID));
|
|
return JVMTI_ERROR_NONE;
|
|
}
|
|
|
|
|
|
instanceKlassHandle instanceK_h(current_thread, k);
|
|
|
|
int result_count = 0;
|
|
// First, count the fields.
|
|
FilteredFieldStream flds(instanceK_h, true, true);
|
|
result_count = flds.field_count();
|
|
|
|
// Allocate the result and fill it in
|
|
jfieldID* result_list = (jfieldID*) jvmtiMalloc(result_count * sizeof(jfieldID));
|
|
// The JVMTI spec requires fields in the order they occur in the class file,
|
|
// this is the reverse order of what FieldStream hands out.
|
|
int id_index = (result_count - 1);
|
|
|
|
for (FilteredFieldStream src_st(instanceK_h, true, true); !src_st.eos(); src_st.next()) {
|
|
result_list[id_index--] = jfieldIDWorkaround::to_jfieldID(
|
|
instanceK_h, src_st.offset(),
|
|
src_st.access_flags().is_static());
|
|
}
|
|
assert(id_index == -1, "just checking");
|
|
// Fill in the results
|
|
*field_count_ptr = result_count;
|
|
*fields_ptr = result_list;
|
|
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetClassFields */
|
|
|
|
|
|
// k_mirror - may be primitive, this must be checked
|
|
// interface_count_ptr - pre-checked for NULL
|
|
// interfaces_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetImplementedInterfaces(oop k_mirror, jint* interface_count_ptr, jclass** interfaces_ptr) {
|
|
{
|
|
if (java_lang_Class::is_primitive(k_mirror)) {
|
|
*interface_count_ptr = 0;
|
|
*interfaces_ptr = (jclass*) jvmtiMalloc(0 * sizeof(jclass));
|
|
return JVMTI_ERROR_NONE;
|
|
}
|
|
JavaThread* current_thread = JavaThread::current();
|
|
HandleMark hm(current_thread);
|
|
klassOop k = java_lang_Class::as_klassOop(k_mirror);
|
|
NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS);
|
|
|
|
// Return CLASS_NOT_PREPARED error as per JVMTI spec.
|
|
if (!(Klass::cast(k)->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) ))
|
|
return JVMTI_ERROR_CLASS_NOT_PREPARED;
|
|
|
|
if (!Klass::cast(k)->oop_is_instance()) {
|
|
*interface_count_ptr = 0;
|
|
*interfaces_ptr = (jclass*) jvmtiMalloc(0 * sizeof(jclass));
|
|
return JVMTI_ERROR_NONE;
|
|
}
|
|
|
|
objArrayHandle interface_list(current_thread, instanceKlass::cast(k)->local_interfaces());
|
|
const int result_length = (interface_list.is_null() ? 0 : interface_list->length());
|
|
jclass* result_list = (jclass*) jvmtiMalloc(result_length * sizeof(jclass));
|
|
for (int i_index = 0; i_index < result_length; i_index += 1) {
|
|
oop oop_at = interface_list->obj_at(i_index);
|
|
assert(oop_at->is_klass(), "interfaces must be klassOops");
|
|
klassOop klassOop_at = klassOop(oop_at); // ???: is there a better way?
|
|
assert(Klass::cast(klassOop_at)->is_interface(), "interfaces must be interfaces");
|
|
oop mirror_at = Klass::cast(klassOop_at)->java_mirror();
|
|
Handle handle_at = Handle(current_thread, mirror_at);
|
|
result_list[i_index] = (jclass) jni_reference(handle_at);
|
|
}
|
|
*interface_count_ptr = result_length;
|
|
*interfaces_ptr = result_list;
|
|
}
|
|
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetImplementedInterfaces */
|
|
|
|
|
|
// k_mirror - may be primitive, this must be checked
|
|
// minor_version_ptr - pre-checked for NULL
|
|
// major_version_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetClassVersionNumbers(oop k_mirror, jint* minor_version_ptr, jint* major_version_ptr) {
|
|
if (java_lang_Class::is_primitive(k_mirror)) {
|
|
return JVMTI_ERROR_ABSENT_INFORMATION;
|
|
}
|
|
klassOop k_oop = java_lang_Class::as_klassOop(k_mirror);
|
|
Thread *thread = Thread::current();
|
|
HandleMark hm(thread);
|
|
KlassHandle klass(thread, k_oop);
|
|
|
|
jint status = klass->jvmti_class_status();
|
|
if (status & (JVMTI_CLASS_STATUS_ERROR)) {
|
|
return JVMTI_ERROR_INVALID_CLASS;
|
|
}
|
|
if (status & (JVMTI_CLASS_STATUS_ARRAY)) {
|
|
return JVMTI_ERROR_ABSENT_INFORMATION;
|
|
}
|
|
|
|
instanceKlassHandle ik(thread, k_oop);
|
|
*minor_version_ptr = ik->minor_version();
|
|
*major_version_ptr = ik->major_version();
|
|
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetClassVersionNumbers */
|
|
|
|
|
|
// k_mirror - may be primitive, this must be checked
|
|
// constant_pool_count_ptr - pre-checked for NULL
|
|
// constant_pool_byte_count_ptr - pre-checked for NULL
|
|
// constant_pool_bytes_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetConstantPool(oop k_mirror, jint* constant_pool_count_ptr, jint* constant_pool_byte_count_ptr, unsigned char** constant_pool_bytes_ptr) {
|
|
if (java_lang_Class::is_primitive(k_mirror)) {
|
|
return JVMTI_ERROR_ABSENT_INFORMATION;
|
|
}
|
|
|
|
klassOop k_oop = java_lang_Class::as_klassOop(k_mirror);
|
|
Thread *thread = Thread::current();
|
|
HandleMark hm(thread);
|
|
ResourceMark rm(thread);
|
|
KlassHandle klass(thread, k_oop);
|
|
|
|
jint status = klass->jvmti_class_status();
|
|
if (status & (JVMTI_CLASS_STATUS_ERROR)) {
|
|
return JVMTI_ERROR_INVALID_CLASS;
|
|
}
|
|
if (status & (JVMTI_CLASS_STATUS_ARRAY)) {
|
|
return JVMTI_ERROR_ABSENT_INFORMATION;
|
|
}
|
|
|
|
instanceKlassHandle ikh(thread, k_oop);
|
|
constantPoolHandle constants(thread, ikh->constants());
|
|
ObjectLocker ol(constants, thread); // lock constant pool while we query it
|
|
|
|
JvmtiConstantPoolReconstituter reconstituter(ikh);
|
|
if (reconstituter.get_error() != JVMTI_ERROR_NONE) {
|
|
return reconstituter.get_error();
|
|
}
|
|
|
|
unsigned char *cpool_bytes;
|
|
int cpool_size = reconstituter.cpool_size();
|
|
if (reconstituter.get_error() != JVMTI_ERROR_NONE) {
|
|
return reconstituter.get_error();
|
|
}
|
|
jvmtiError res = allocate(cpool_size, &cpool_bytes);
|
|
if (res != JVMTI_ERROR_NONE) {
|
|
return res;
|
|
}
|
|
reconstituter.copy_cpool_bytes(cpool_bytes);
|
|
if (reconstituter.get_error() != JVMTI_ERROR_NONE) {
|
|
return reconstituter.get_error();
|
|
}
|
|
|
|
*constant_pool_count_ptr = constants->length();
|
|
*constant_pool_byte_count_ptr = cpool_size;
|
|
*constant_pool_bytes_ptr = cpool_bytes;
|
|
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetConstantPool */
|
|
|
|
|
|
// k_mirror - may be primitive, this must be checked
|
|
// is_interface_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::IsInterface(oop k_mirror, jboolean* is_interface_ptr) {
|
|
{
|
|
bool result = false;
|
|
if (!java_lang_Class::is_primitive(k_mirror)) {
|
|
klassOop k = java_lang_Class::as_klassOop(k_mirror);
|
|
if (k != NULL && Klass::cast(k)->is_interface()) {
|
|
result = true;
|
|
}
|
|
}
|
|
*is_interface_ptr = result;
|
|
}
|
|
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end IsInterface */
|
|
|
|
|
|
// k_mirror - may be primitive, this must be checked
|
|
// is_array_class_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::IsArrayClass(oop k_mirror, jboolean* is_array_class_ptr) {
|
|
{
|
|
bool result = false;
|
|
if (!java_lang_Class::is_primitive(k_mirror)) {
|
|
klassOop k = java_lang_Class::as_klassOop(k_mirror);
|
|
if (k != NULL && Klass::cast(k)->oop_is_array()) {
|
|
result = true;
|
|
}
|
|
}
|
|
*is_array_class_ptr = result;
|
|
}
|
|
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end IsArrayClass */
|
|
|
|
|
|
// k_mirror - may be primitive, this must be checked
|
|
// classloader_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetClassLoader(oop k_mirror, jobject* classloader_ptr) {
|
|
{
|
|
if (java_lang_Class::is_primitive(k_mirror)) {
|
|
*classloader_ptr = (jclass) jni_reference(Handle());
|
|
return JVMTI_ERROR_NONE;
|
|
}
|
|
JavaThread* current_thread = JavaThread::current();
|
|
HandleMark hm(current_thread);
|
|
klassOop k = java_lang_Class::as_klassOop(k_mirror);
|
|
NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS);
|
|
|
|
oop result_oop = Klass::cast(k)->class_loader();
|
|
if (result_oop == NULL) {
|
|
*classloader_ptr = (jclass) jni_reference(Handle());
|
|
return JVMTI_ERROR_NONE;
|
|
}
|
|
Handle result_handle = Handle(current_thread, result_oop);
|
|
jclass result_jnihandle = (jclass) jni_reference(result_handle);
|
|
*classloader_ptr = result_jnihandle;
|
|
}
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetClassLoader */
|
|
|
|
|
|
// k_mirror - may be primitive, this must be checked
|
|
// source_debug_extension_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetSourceDebugExtension(oop k_mirror, char** source_debug_extension_ptr) {
|
|
{
|
|
if (java_lang_Class::is_primitive(k_mirror)) {
|
|
return JVMTI_ERROR_ABSENT_INFORMATION;
|
|
}
|
|
klassOop k = java_lang_Class::as_klassOop(k_mirror);
|
|
NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS);
|
|
if (!Klass::cast(k)->oop_is_instance()) {
|
|
return JVMTI_ERROR_ABSENT_INFORMATION;
|
|
}
|
|
symbolOop sdeOop = instanceKlass::cast(k)->source_debug_extension();
|
|
NULL_CHECK(sdeOop, JVMTI_ERROR_ABSENT_INFORMATION);
|
|
|
|
{
|
|
JavaThread* current_thread = JavaThread::current();
|
|
ResourceMark rm(current_thread);
|
|
const char* sdecp = (const char*) sdeOop->as_C_string();
|
|
*source_debug_extension_ptr = (char *) jvmtiMalloc(strlen(sdecp)+1);
|
|
strcpy(*source_debug_extension_ptr, sdecp);
|
|
}
|
|
}
|
|
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetSourceDebugExtension */
|
|
|
|
//
|
|
// Object functions
|
|
//
|
|
|
|
// hash_code_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetObjectHashCode(jobject object, jint* hash_code_ptr) {
|
|
oop mirror = JNIHandles::resolve_external_guard(object);
|
|
NULL_CHECK(mirror, JVMTI_ERROR_INVALID_OBJECT);
|
|
NULL_CHECK(hash_code_ptr, JVMTI_ERROR_NULL_POINTER);
|
|
|
|
{
|
|
jint result = (jint) mirror->identity_hash();
|
|
*hash_code_ptr = result;
|
|
}
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetObjectHashCode */
|
|
|
|
|
|
// info_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetObjectMonitorUsage(jobject object, jvmtiMonitorUsage* info_ptr) {
|
|
JavaThread* calling_thread = JavaThread::current();
|
|
jvmtiError err = get_object_monitor_usage(calling_thread, object, info_ptr);
|
|
if (err == JVMTI_ERROR_THREAD_NOT_SUSPENDED) {
|
|
// Some of the critical threads were not suspended. go to a safepoint and try again
|
|
VM_GetObjectMonitorUsage op(this, calling_thread, object, info_ptr);
|
|
VMThread::execute(&op);
|
|
err = op.result();
|
|
}
|
|
return err;
|
|
} /* end GetObjectMonitorUsage */
|
|
|
|
|
|
//
|
|
// Field functions
|
|
//
|
|
|
|
// name_ptr - NULL is a valid value, must be checked
|
|
// signature_ptr - NULL is a valid value, must be checked
|
|
// generic_ptr - NULL is a valid value, must be checked
|
|
jvmtiError
|
|
JvmtiEnv::GetFieldName(fieldDescriptor* fdesc_ptr, char** name_ptr, char** signature_ptr, char** generic_ptr) {
|
|
JavaThread* current_thread = JavaThread::current();
|
|
ResourceMark rm(current_thread);
|
|
if (name_ptr == NULL) {
|
|
// just don't return the name
|
|
} else {
|
|
const char* fieldName = fdesc_ptr->name()->as_C_string();
|
|
*name_ptr = (char*) jvmtiMalloc(strlen(fieldName) + 1);
|
|
if (*name_ptr == NULL)
|
|
return JVMTI_ERROR_OUT_OF_MEMORY;
|
|
strcpy(*name_ptr, fieldName);
|
|
}
|
|
if (signature_ptr== NULL) {
|
|
// just don't return the signature
|
|
} else {
|
|
const char* fieldSignature = fdesc_ptr->signature()->as_C_string();
|
|
*signature_ptr = (char*) jvmtiMalloc(strlen(fieldSignature) + 1);
|
|
if (*signature_ptr == NULL)
|
|
return JVMTI_ERROR_OUT_OF_MEMORY;
|
|
strcpy(*signature_ptr, fieldSignature);
|
|
}
|
|
if (generic_ptr != NULL) {
|
|
*generic_ptr = NULL;
|
|
symbolOop soop = fdesc_ptr->generic_signature();
|
|
if (soop != NULL) {
|
|
const char* gen_sig = soop->as_C_string();
|
|
if (gen_sig != NULL) {
|
|
jvmtiError err = allocate(strlen(gen_sig) + 1, (unsigned char **)generic_ptr);
|
|
if (err != JVMTI_ERROR_NONE) {
|
|
return err;
|
|
}
|
|
strcpy(*generic_ptr, gen_sig);
|
|
}
|
|
}
|
|
}
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetFieldName */
|
|
|
|
|
|
// declaring_class_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetFieldDeclaringClass(fieldDescriptor* fdesc_ptr, jclass* declaring_class_ptr) {
|
|
|
|
*declaring_class_ptr = get_jni_class_non_null(fdesc_ptr->field_holder());
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetFieldDeclaringClass */
|
|
|
|
|
|
// modifiers_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetFieldModifiers(fieldDescriptor* fdesc_ptr, jint* modifiers_ptr) {
|
|
|
|
AccessFlags resultFlags = fdesc_ptr->access_flags();
|
|
jint result = resultFlags.as_int();
|
|
*modifiers_ptr = result;
|
|
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetFieldModifiers */
|
|
|
|
|
|
// is_synthetic_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::IsFieldSynthetic(fieldDescriptor* fdesc_ptr, jboolean* is_synthetic_ptr) {
|
|
*is_synthetic_ptr = fdesc_ptr->is_synthetic();
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end IsFieldSynthetic */
|
|
|
|
|
|
//
|
|
// Method functions
|
|
//
|
|
|
|
// method_oop - pre-checked for validity, but may be NULL meaning obsolete method
|
|
// name_ptr - NULL is a valid value, must be checked
|
|
// signature_ptr - NULL is a valid value, must be checked
|
|
// generic_ptr - NULL is a valid value, must be checked
|
|
jvmtiError
|
|
JvmtiEnv::GetMethodName(methodOop method_oop, char** name_ptr, char** signature_ptr, char** generic_ptr) {
|
|
NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
|
|
JavaThread* current_thread = JavaThread::current();
|
|
|
|
ResourceMark rm(current_thread); // get the utf8 name and signature
|
|
if (name_ptr == NULL) {
|
|
// just don't return the name
|
|
} else {
|
|
const char* utf8_name = (const char *) method_oop->name()->as_utf8();
|
|
*name_ptr = (char *) jvmtiMalloc(strlen(utf8_name)+1);
|
|
strcpy(*name_ptr, utf8_name);
|
|
}
|
|
if (signature_ptr == NULL) {
|
|
// just don't return the signature
|
|
} else {
|
|
const char* utf8_signature = (const char *) method_oop->signature()->as_utf8();
|
|
*signature_ptr = (char *) jvmtiMalloc(strlen(utf8_signature) + 1);
|
|
strcpy(*signature_ptr, utf8_signature);
|
|
}
|
|
|
|
if (generic_ptr != NULL) {
|
|
*generic_ptr = NULL;
|
|
symbolOop soop = method_oop->generic_signature();
|
|
if (soop != NULL) {
|
|
const char* gen_sig = soop->as_C_string();
|
|
if (gen_sig != NULL) {
|
|
jvmtiError err = allocate(strlen(gen_sig) + 1, (unsigned char **)generic_ptr);
|
|
if (err != JVMTI_ERROR_NONE) {
|
|
return err;
|
|
}
|
|
strcpy(*generic_ptr, gen_sig);
|
|
}
|
|
}
|
|
}
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetMethodName */
|
|
|
|
|
|
// method_oop - pre-checked for validity, but may be NULL meaning obsolete method
|
|
// declaring_class_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetMethodDeclaringClass(methodOop method_oop, jclass* declaring_class_ptr) {
|
|
NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
|
|
(*declaring_class_ptr) = get_jni_class_non_null(method_oop->method_holder());
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetMethodDeclaringClass */
|
|
|
|
|
|
// method_oop - pre-checked for validity, but may be NULL meaning obsolete method
|
|
// modifiers_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetMethodModifiers(methodOop method_oop, jint* modifiers_ptr) {
|
|
NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
|
|
(*modifiers_ptr) = method_oop->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS;
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetMethodModifiers */
|
|
|
|
|
|
// method_oop - pre-checked for validity, but may be NULL meaning obsolete method
|
|
// max_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetMaxLocals(methodOop method_oop, jint* max_ptr) {
|
|
NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
|
|
// get max stack
|
|
(*max_ptr) = method_oop->max_locals();
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetMaxLocals */
|
|
|
|
|
|
// method_oop - pre-checked for validity, but may be NULL meaning obsolete method
|
|
// size_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetArgumentsSize(methodOop method_oop, jint* size_ptr) {
|
|
NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
|
|
// get size of arguments
|
|
|
|
(*size_ptr) = method_oop->size_of_parameters();
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetArgumentsSize */
|
|
|
|
|
|
// method_oop - pre-checked for validity, but may be NULL meaning obsolete method
|
|
// entry_count_ptr - pre-checked for NULL
|
|
// table_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetLineNumberTable(methodOop method_oop, jint* entry_count_ptr, jvmtiLineNumberEntry** table_ptr) {
|
|
NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
|
|
if (!method_oop->has_linenumber_table()) {
|
|
return (JVMTI_ERROR_ABSENT_INFORMATION);
|
|
}
|
|
|
|
// The line number table is compressed so we don't know how big it is until decompressed.
|
|
// Decompression is really fast so we just do it twice.
|
|
|
|
// Compute size of table
|
|
jint num_entries = 0;
|
|
CompressedLineNumberReadStream stream(method_oop->compressed_linenumber_table());
|
|
while (stream.read_pair()) {
|
|
num_entries++;
|
|
}
|
|
jvmtiLineNumberEntry *jvmti_table =
|
|
(jvmtiLineNumberEntry *)jvmtiMalloc(num_entries * (sizeof(jvmtiLineNumberEntry)));
|
|
|
|
// Fill jvmti table
|
|
if (num_entries > 0) {
|
|
int index = 0;
|
|
CompressedLineNumberReadStream stream(method_oop->compressed_linenumber_table());
|
|
while (stream.read_pair()) {
|
|
jvmti_table[index].start_location = (jlocation) stream.bci();
|
|
jvmti_table[index].line_number = (jint) stream.line();
|
|
index++;
|
|
}
|
|
assert(index == num_entries, "sanity check");
|
|
}
|
|
|
|
// Set up results
|
|
(*entry_count_ptr) = num_entries;
|
|
(*table_ptr) = jvmti_table;
|
|
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetLineNumberTable */
|
|
|
|
|
|
// method_oop - pre-checked for validity, but may be NULL meaning obsolete method
|
|
// start_location_ptr - pre-checked for NULL
|
|
// end_location_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetMethodLocation(methodOop method_oop, jlocation* start_location_ptr, jlocation* end_location_ptr) {
|
|
|
|
NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
|
|
// get start and end location
|
|
(*end_location_ptr) = (jlocation) (method_oop->code_size() - 1);
|
|
if (method_oop->code_size() == 0) {
|
|
// there is no code so there is no start location
|
|
(*start_location_ptr) = (jlocation)(-1);
|
|
} else {
|
|
(*start_location_ptr) = (jlocation)(0);
|
|
}
|
|
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetMethodLocation */
|
|
|
|
|
|
// method_oop - pre-checked for validity, but may be NULL meaning obsolete method
|
|
// entry_count_ptr - pre-checked for NULL
|
|
// table_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetLocalVariableTable(methodOop method_oop, jint* entry_count_ptr, jvmtiLocalVariableEntry** table_ptr) {
|
|
|
|
NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
|
|
JavaThread* current_thread = JavaThread::current();
|
|
|
|
// does the klass have any local variable information?
|
|
instanceKlass* ik = instanceKlass::cast(method_oop->method_holder());
|
|
if (!ik->access_flags().has_localvariable_table()) {
|
|
return (JVMTI_ERROR_ABSENT_INFORMATION);
|
|
}
|
|
|
|
constantPoolOop constants = method_oop->constants();
|
|
NULL_CHECK(constants, JVMTI_ERROR_ABSENT_INFORMATION);
|
|
|
|
// in the vm localvariable table representation, 6 consecutive elements in the table
|
|
// represent a 6-tuple of shorts
|
|
// [start_pc, length, name_index, descriptor_index, signature_index, index]
|
|
jint num_entries = method_oop->localvariable_table_length();
|
|
jvmtiLocalVariableEntry *jvmti_table = (jvmtiLocalVariableEntry *)
|
|
jvmtiMalloc(num_entries * (sizeof(jvmtiLocalVariableEntry)));
|
|
|
|
if (num_entries > 0) {
|
|
LocalVariableTableElement* table = method_oop->localvariable_table_start();
|
|
for (int i = 0; i < num_entries; i++) {
|
|
// get the 5 tuple information from the vm table
|
|
jlocation start_location = (jlocation) table[i].start_bci;
|
|
jint length = (jint) table[i].length;
|
|
int name_index = (int) table[i].name_cp_index;
|
|
int signature_index = (int) table[i].descriptor_cp_index;
|
|
int generic_signature_index = (int) table[i].signature_cp_index;
|
|
jint slot = (jint) table[i].slot;
|
|
|
|
// get utf8 name and signature
|
|
char *name_buf = NULL;
|
|
char *sig_buf = NULL;
|
|
char *gen_sig_buf = NULL;
|
|
{
|
|
ResourceMark rm(current_thread);
|
|
|
|
const char *utf8_name = (const char *) constants->symbol_at(name_index)->as_utf8();
|
|
name_buf = (char *) jvmtiMalloc(strlen(utf8_name)+1);
|
|
strcpy(name_buf, utf8_name);
|
|
|
|
const char *utf8_signature = (const char *) constants->symbol_at(signature_index)->as_utf8();
|
|
sig_buf = (char *) jvmtiMalloc(strlen(utf8_signature)+1);
|
|
strcpy(sig_buf, utf8_signature);
|
|
|
|
if (generic_signature_index > 0) {
|
|
const char *utf8_gen_sign = (const char *)
|
|
constants->symbol_at(generic_signature_index)->as_utf8();
|
|
gen_sig_buf = (char *) jvmtiMalloc(strlen(utf8_gen_sign)+1);
|
|
strcpy(gen_sig_buf, utf8_gen_sign);
|
|
}
|
|
}
|
|
|
|
// fill in the jvmti local variable table
|
|
jvmti_table[i].start_location = start_location;
|
|
jvmti_table[i].length = length;
|
|
jvmti_table[i].name = name_buf;
|
|
jvmti_table[i].signature = sig_buf;
|
|
jvmti_table[i].generic_signature = gen_sig_buf;
|
|
jvmti_table[i].slot = slot;
|
|
}
|
|
}
|
|
|
|
// set results
|
|
(*entry_count_ptr) = num_entries;
|
|
(*table_ptr) = jvmti_table;
|
|
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetLocalVariableTable */
|
|
|
|
|
|
// method_oop - pre-checked for validity, but may be NULL meaning obsolete method
|
|
// bytecode_count_ptr - pre-checked for NULL
|
|
// bytecodes_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetBytecodes(methodOop method_oop, jint* bytecode_count_ptr, unsigned char** bytecodes_ptr) {
|
|
NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
|
|
|
|
HandleMark hm;
|
|
methodHandle method(method_oop);
|
|
jint size = (jint)method->code_size();
|
|
jvmtiError err = allocate(size, bytecodes_ptr);
|
|
if (err != JVMTI_ERROR_NONE) {
|
|
return err;
|
|
}
|
|
|
|
(*bytecode_count_ptr) = size;
|
|
// get byte codes
|
|
JvmtiClassFileReconstituter::copy_bytecodes(method, *bytecodes_ptr);
|
|
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetBytecodes */
|
|
|
|
|
|
// method_oop - pre-checked for validity, but may be NULL meaning obsolete method
|
|
// is_native_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::IsMethodNative(methodOop method_oop, jboolean* is_native_ptr) {
|
|
NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
|
|
(*is_native_ptr) = method_oop->is_native();
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end IsMethodNative */
|
|
|
|
|
|
// method_oop - pre-checked for validity, but may be NULL meaning obsolete method
|
|
// is_synthetic_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::IsMethodSynthetic(methodOop method_oop, jboolean* is_synthetic_ptr) {
|
|
NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
|
|
(*is_synthetic_ptr) = method_oop->is_synthetic();
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end IsMethodSynthetic */
|
|
|
|
|
|
// method_oop - pre-checked for validity, but may be NULL meaning obsolete method
|
|
// is_obsolete_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::IsMethodObsolete(methodOop method_oop, jboolean* is_obsolete_ptr) {
|
|
if (method_oop == NULL || method_oop->is_obsolete()) {
|
|
*is_obsolete_ptr = true;
|
|
} else {
|
|
*is_obsolete_ptr = false;
|
|
}
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end IsMethodObsolete */
|
|
|
|
//
|
|
// Raw Monitor functions
|
|
//
|
|
|
|
// name - pre-checked for NULL
|
|
// monitor_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::CreateRawMonitor(const char* name, jrawMonitorID* monitor_ptr) {
|
|
JvmtiRawMonitor* rmonitor = new JvmtiRawMonitor(name);
|
|
NULL_CHECK(rmonitor, JVMTI_ERROR_OUT_OF_MEMORY);
|
|
|
|
*monitor_ptr = (jrawMonitorID)rmonitor;
|
|
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end CreateRawMonitor */
|
|
|
|
|
|
// rmonitor - pre-checked for validity
|
|
jvmtiError
|
|
JvmtiEnv::DestroyRawMonitor(JvmtiRawMonitor * rmonitor) {
|
|
if (Threads::number_of_threads() == 0) {
|
|
// Remove this monitor from pending raw monitors list
|
|
// if it has entered in onload or start phase.
|
|
JvmtiPendingMonitors::destroy(rmonitor);
|
|
} else {
|
|
Thread* thread = Thread::current();
|
|
if (rmonitor->is_entered(thread)) {
|
|
// The caller owns this monitor which we are about to destroy.
|
|
// We exit the underlying synchronization object so that the
|
|
// "delete monitor" call below can work without an assertion
|
|
// failure on systems that don't like destroying synchronization
|
|
// objects that are locked.
|
|
int r;
|
|
intptr_t recursion = rmonitor->recursions();
|
|
for (intptr_t i=0; i <= recursion; i++) {
|
|
r = rmonitor->raw_exit(thread);
|
|
assert(r == ObjectMonitor::OM_OK, "raw_exit should have worked");
|
|
if (r != ObjectMonitor::OM_OK) { // robustness
|
|
return JVMTI_ERROR_INTERNAL;
|
|
}
|
|
}
|
|
}
|
|
if (rmonitor->owner() != NULL) {
|
|
// The caller is trying to destroy a monitor that is locked by
|
|
// someone else. While this is not forbidden by the JVMTI
|
|
// spec, it will cause an assertion failure on systems that don't
|
|
// like destroying synchronization objects that are locked.
|
|
// We indicate a problem with the error return (and leak the
|
|
// monitor's memory).
|
|
return JVMTI_ERROR_NOT_MONITOR_OWNER;
|
|
}
|
|
}
|
|
|
|
delete rmonitor;
|
|
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end DestroyRawMonitor */
|
|
|
|
|
|
// rmonitor - pre-checked for validity
|
|
jvmtiError
|
|
JvmtiEnv::RawMonitorEnter(JvmtiRawMonitor * rmonitor) {
|
|
if (Threads::number_of_threads() == 0) {
|
|
// No JavaThreads exist so ObjectMonitor enter cannot be
|
|
// used, add this raw monitor to the pending list.
|
|
// The pending monitors will be actually entered when
|
|
// the VM is setup.
|
|
// See transition_pending_raw_monitors in create_vm()
|
|
// in thread.cpp.
|
|
JvmtiPendingMonitors::enter(rmonitor);
|
|
} else {
|
|
int r;
|
|
Thread* thread = Thread::current();
|
|
|
|
if (thread->is_Java_thread()) {
|
|
JavaThread* current_thread = (JavaThread*)thread;
|
|
|
|
#ifdef PROPER_TRANSITIONS
|
|
// Not really unknown but ThreadInVMfromNative does more than we want
|
|
ThreadInVMfromUnknown __tiv;
|
|
{
|
|
ThreadBlockInVM __tbivm(current_thread);
|
|
r = rmonitor->raw_enter(current_thread);
|
|
}
|
|
#else
|
|
/* Transition to thread_blocked without entering vm state */
|
|
/* This is really evil. Normally you can't undo _thread_blocked */
|
|
/* transitions like this because it would cause us to miss a */
|
|
/* safepoint but since the thread was already in _thread_in_native */
|
|
/* the thread is not leaving a safepoint safe state and it will */
|
|
/* block when it tries to return from native. We can't safepoint */
|
|
/* block in here because we could deadlock the vmthread. Blech. */
|
|
|
|
JavaThreadState state = current_thread->thread_state();
|
|
assert(state == _thread_in_native, "Must be _thread_in_native");
|
|
// frame should already be walkable since we are in native
|
|
assert(!current_thread->has_last_Java_frame() ||
|
|
current_thread->frame_anchor()->walkable(), "Must be walkable");
|
|
current_thread->set_thread_state(_thread_blocked);
|
|
|
|
r = rmonitor->raw_enter(current_thread);
|
|
// restore state, still at a safepoint safe state
|
|
current_thread->set_thread_state(state);
|
|
|
|
#endif /* PROPER_TRANSITIONS */
|
|
assert(r == ObjectMonitor::OM_OK, "raw_enter should have worked");
|
|
} else {
|
|
if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) {
|
|
r = rmonitor->raw_enter(thread);
|
|
} else {
|
|
ShouldNotReachHere();
|
|
}
|
|
}
|
|
|
|
if (r != ObjectMonitor::OM_OK) { // robustness
|
|
return JVMTI_ERROR_INTERNAL;
|
|
}
|
|
}
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end RawMonitorEnter */
|
|
|
|
|
|
// rmonitor - pre-checked for validity
|
|
jvmtiError
|
|
JvmtiEnv::RawMonitorExit(JvmtiRawMonitor * rmonitor) {
|
|
jvmtiError err = JVMTI_ERROR_NONE;
|
|
|
|
if (Threads::number_of_threads() == 0) {
|
|
// No JavaThreads exist so just remove this monitor from the pending list.
|
|
// Bool value from exit is false if rmonitor is not in the list.
|
|
if (!JvmtiPendingMonitors::exit(rmonitor)) {
|
|
err = JVMTI_ERROR_NOT_MONITOR_OWNER;
|
|
}
|
|
} else {
|
|
int r;
|
|
Thread* thread = Thread::current();
|
|
|
|
if (thread->is_Java_thread()) {
|
|
JavaThread* current_thread = (JavaThread*)thread;
|
|
#ifdef PROPER_TRANSITIONS
|
|
// Not really unknown but ThreadInVMfromNative does more than we want
|
|
ThreadInVMfromUnknown __tiv;
|
|
#endif /* PROPER_TRANSITIONS */
|
|
r = rmonitor->raw_exit(current_thread);
|
|
} else {
|
|
if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) {
|
|
r = rmonitor->raw_exit(thread);
|
|
} else {
|
|
ShouldNotReachHere();
|
|
}
|
|
}
|
|
|
|
if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) {
|
|
err = JVMTI_ERROR_NOT_MONITOR_OWNER;
|
|
} else {
|
|
assert(r == ObjectMonitor::OM_OK, "raw_exit should have worked");
|
|
if (r != ObjectMonitor::OM_OK) { // robustness
|
|
err = JVMTI_ERROR_INTERNAL;
|
|
}
|
|
}
|
|
}
|
|
return err;
|
|
} /* end RawMonitorExit */
|
|
|
|
|
|
// rmonitor - pre-checked for validity
|
|
jvmtiError
|
|
JvmtiEnv::RawMonitorWait(JvmtiRawMonitor * rmonitor, jlong millis) {
|
|
int r;
|
|
Thread* thread = Thread::current();
|
|
|
|
if (thread->is_Java_thread()) {
|
|
JavaThread* current_thread = (JavaThread*)thread;
|
|
#ifdef PROPER_TRANSITIONS
|
|
// Not really unknown but ThreadInVMfromNative does more than we want
|
|
ThreadInVMfromUnknown __tiv;
|
|
{
|
|
ThreadBlockInVM __tbivm(current_thread);
|
|
r = rmonitor->raw_wait(millis, true, current_thread);
|
|
}
|
|
#else
|
|
/* Transition to thread_blocked without entering vm state */
|
|
/* This is really evil. Normally you can't undo _thread_blocked */
|
|
/* transitions like this because it would cause us to miss a */
|
|
/* safepoint but since the thread was already in _thread_in_native */
|
|
/* the thread is not leaving a safepoint safe state and it will */
|
|
/* block when it tries to return from native. We can't safepoint */
|
|
/* block in here because we could deadlock the vmthread. Blech. */
|
|
|
|
JavaThreadState state = current_thread->thread_state();
|
|
assert(state == _thread_in_native, "Must be _thread_in_native");
|
|
// frame should already be walkable since we are in native
|
|
assert(!current_thread->has_last_Java_frame() ||
|
|
current_thread->frame_anchor()->walkable(), "Must be walkable");
|
|
current_thread->set_thread_state(_thread_blocked);
|
|
|
|
r = rmonitor->raw_wait(millis, true, current_thread);
|
|
// restore state, still at a safepoint safe state
|
|
current_thread->set_thread_state(state);
|
|
|
|
#endif /* PROPER_TRANSITIONS */
|
|
} else {
|
|
if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) {
|
|
r = rmonitor->raw_wait(millis, true, thread);
|
|
} else {
|
|
ShouldNotReachHere();
|
|
}
|
|
}
|
|
|
|
switch (r) {
|
|
case ObjectMonitor::OM_INTERRUPTED:
|
|
return JVMTI_ERROR_INTERRUPT;
|
|
case ObjectMonitor::OM_ILLEGAL_MONITOR_STATE:
|
|
return JVMTI_ERROR_NOT_MONITOR_OWNER;
|
|
}
|
|
assert(r == ObjectMonitor::OM_OK, "raw_wait should have worked");
|
|
if (r != ObjectMonitor::OM_OK) { // robustness
|
|
return JVMTI_ERROR_INTERNAL;
|
|
}
|
|
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end RawMonitorWait */
|
|
|
|
|
|
// rmonitor - pre-checked for validity
|
|
jvmtiError
|
|
JvmtiEnv::RawMonitorNotify(JvmtiRawMonitor * rmonitor) {
|
|
int r;
|
|
Thread* thread = Thread::current();
|
|
|
|
if (thread->is_Java_thread()) {
|
|
JavaThread* current_thread = (JavaThread*)thread;
|
|
// Not really unknown but ThreadInVMfromNative does more than we want
|
|
ThreadInVMfromUnknown __tiv;
|
|
r = rmonitor->raw_notify(current_thread);
|
|
} else {
|
|
if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) {
|
|
r = rmonitor->raw_notify(thread);
|
|
} else {
|
|
ShouldNotReachHere();
|
|
}
|
|
}
|
|
|
|
if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) {
|
|
return JVMTI_ERROR_NOT_MONITOR_OWNER;
|
|
}
|
|
assert(r == ObjectMonitor::OM_OK, "raw_notify should have worked");
|
|
if (r != ObjectMonitor::OM_OK) { // robustness
|
|
return JVMTI_ERROR_INTERNAL;
|
|
}
|
|
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end RawMonitorNotify */
|
|
|
|
|
|
// rmonitor - pre-checked for validity
|
|
jvmtiError
|
|
JvmtiEnv::RawMonitorNotifyAll(JvmtiRawMonitor * rmonitor) {
|
|
int r;
|
|
Thread* thread = Thread::current();
|
|
|
|
if (thread->is_Java_thread()) {
|
|
JavaThread* current_thread = (JavaThread*)thread;
|
|
ThreadInVMfromUnknown __tiv;
|
|
r = rmonitor->raw_notifyAll(current_thread);
|
|
} else {
|
|
if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) {
|
|
r = rmonitor->raw_notifyAll(thread);
|
|
} else {
|
|
ShouldNotReachHere();
|
|
}
|
|
}
|
|
|
|
if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) {
|
|
return JVMTI_ERROR_NOT_MONITOR_OWNER;
|
|
}
|
|
assert(r == ObjectMonitor::OM_OK, "raw_notifyAll should have worked");
|
|
if (r != ObjectMonitor::OM_OK) { // robustness
|
|
return JVMTI_ERROR_INTERNAL;
|
|
}
|
|
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end RawMonitorNotifyAll */
|
|
|
|
|
|
//
|
|
// JNI Function Interception functions
|
|
//
|
|
|
|
|
|
// function_table - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::SetJNIFunctionTable(const jniNativeInterface* function_table) {
|
|
// Copy jni function table at safepoint.
|
|
VM_JNIFunctionTableCopier copier(function_table);
|
|
VMThread::execute(&copier);
|
|
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end SetJNIFunctionTable */
|
|
|
|
|
|
// function_table - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetJNIFunctionTable(jniNativeInterface** function_table) {
|
|
*function_table=(jniNativeInterface*)jvmtiMalloc(sizeof(jniNativeInterface));
|
|
if (*function_table == NULL)
|
|
return JVMTI_ERROR_OUT_OF_MEMORY;
|
|
memcpy(*function_table,(JavaThread::current())->get_jni_functions(),sizeof(jniNativeInterface));
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetJNIFunctionTable */
|
|
|
|
|
|
//
|
|
// Event Management functions
|
|
//
|
|
|
|
jvmtiError
|
|
JvmtiEnv::GenerateEvents(jvmtiEvent event_type) {
|
|
// can only generate two event types
|
|
if (event_type != JVMTI_EVENT_COMPILED_METHOD_LOAD &&
|
|
event_type != JVMTI_EVENT_DYNAMIC_CODE_GENERATED) {
|
|
return JVMTI_ERROR_ILLEGAL_ARGUMENT;
|
|
}
|
|
|
|
// for compiled_method_load events we must check that the environment
|
|
// has the can_generate_compiled_method_load_events capability.
|
|
if (event_type == JVMTI_EVENT_COMPILED_METHOD_LOAD) {
|
|
if (get_capabilities()->can_generate_compiled_method_load_events == 0) {
|
|
return JVMTI_ERROR_MUST_POSSESS_CAPABILITY;
|
|
}
|
|
return JvmtiCodeBlobEvents::generate_compiled_method_load_events(this);
|
|
} else {
|
|
return JvmtiCodeBlobEvents::generate_dynamic_code_events(this);
|
|
}
|
|
|
|
} /* end GenerateEvents */
|
|
|
|
|
|
//
|
|
// Extension Mechanism functions
|
|
//
|
|
|
|
// extension_count_ptr - pre-checked for NULL
|
|
// extensions - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetExtensionFunctions(jint* extension_count_ptr, jvmtiExtensionFunctionInfo** extensions) {
|
|
return JvmtiExtensions::get_functions(this, extension_count_ptr, extensions);
|
|
} /* end GetExtensionFunctions */
|
|
|
|
|
|
// extension_count_ptr - pre-checked for NULL
|
|
// extensions - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetExtensionEvents(jint* extension_count_ptr, jvmtiExtensionEventInfo** extensions) {
|
|
return JvmtiExtensions::get_events(this, extension_count_ptr, extensions);
|
|
} /* end GetExtensionEvents */
|
|
|
|
|
|
// callback - NULL is a valid value, must be checked
|
|
jvmtiError
|
|
JvmtiEnv::SetExtensionEventCallback(jint extension_event_index, jvmtiExtensionEvent callback) {
|
|
return JvmtiExtensions::set_event_callback(this, extension_event_index, callback);
|
|
} /* end SetExtensionEventCallback */
|
|
|
|
//
|
|
// Timers functions
|
|
//
|
|
|
|
// info_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetCurrentThreadCpuTimerInfo(jvmtiTimerInfo* info_ptr) {
|
|
os::current_thread_cpu_time_info(info_ptr);
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetCurrentThreadCpuTimerInfo */
|
|
|
|
|
|
// nanos_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetCurrentThreadCpuTime(jlong* nanos_ptr) {
|
|
*nanos_ptr = os::current_thread_cpu_time();
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetCurrentThreadCpuTime */
|
|
|
|
|
|
// info_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetThreadCpuTimerInfo(jvmtiTimerInfo* info_ptr) {
|
|
os::thread_cpu_time_info(info_ptr);
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetThreadCpuTimerInfo */
|
|
|
|
|
|
// Threads_lock NOT held, java_thread not protected by lock
|
|
// java_thread - pre-checked
|
|
// nanos_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetThreadCpuTime(JavaThread* java_thread, jlong* nanos_ptr) {
|
|
*nanos_ptr = os::thread_cpu_time(java_thread);
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetThreadCpuTime */
|
|
|
|
|
|
// info_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetTimerInfo(jvmtiTimerInfo* info_ptr) {
|
|
os::javaTimeNanos_info(info_ptr);
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetTimerInfo */
|
|
|
|
|
|
// nanos_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetTime(jlong* nanos_ptr) {
|
|
*nanos_ptr = os::javaTimeNanos();
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetTime */
|
|
|
|
|
|
// processor_count_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetAvailableProcessors(jint* processor_count_ptr) {
|
|
*processor_count_ptr = os::active_processor_count();
|
|
return JVMTI_ERROR_NONE;
|
|
} /* end GetAvailableProcessors */
|
|
|
|
//
|
|
// System Properties functions
|
|
//
|
|
|
|
// count_ptr - pre-checked for NULL
|
|
// property_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetSystemProperties(jint* count_ptr, char*** property_ptr) {
|
|
jvmtiError err = JVMTI_ERROR_NONE;
|
|
|
|
*count_ptr = Arguments::PropertyList_count(Arguments::system_properties());
|
|
|
|
err = allocate(*count_ptr * sizeof(char *), (unsigned char **)property_ptr);
|
|
if (err != JVMTI_ERROR_NONE) {
|
|
return err;
|
|
}
|
|
int i = 0 ;
|
|
for (SystemProperty* p = Arguments::system_properties(); p != NULL && i < *count_ptr; p = p->next(), i++) {
|
|
const char *key = p->key();
|
|
char **tmp_value = *property_ptr+i;
|
|
err = allocate((strlen(key)+1) * sizeof(char), (unsigned char**)tmp_value);
|
|
if (err == JVMTI_ERROR_NONE) {
|
|
strcpy(*tmp_value, key);
|
|
} else {
|
|
// clean up previously allocated memory.
|
|
for (int j=0; j<i; j++) {
|
|
Deallocate((unsigned char*)*property_ptr+j);
|
|
}
|
|
Deallocate((unsigned char*)property_ptr);
|
|
break;
|
|
}
|
|
}
|
|
return err;
|
|
} /* end GetSystemProperties */
|
|
|
|
|
|
// property - pre-checked for NULL
|
|
// value_ptr - pre-checked for NULL
|
|
jvmtiError
|
|
JvmtiEnv::GetSystemProperty(const char* property, char** value_ptr) {
|
|
jvmtiError err = JVMTI_ERROR_NONE;
|
|
const char *value;
|
|
|
|
value = Arguments::PropertyList_get_value(Arguments::system_properties(), property);
|
|
if (value == NULL) {
|
|
err = JVMTI_ERROR_NOT_AVAILABLE;
|
|
} else {
|
|
err = allocate((strlen(value)+1) * sizeof(char), (unsigned char **)value_ptr);
|
|
if (err == JVMTI_ERROR_NONE) {
|
|
strcpy(*value_ptr, value);
|
|
}
|
|
}
|
|
return err;
|
|
} /* end GetSystemProperty */
|
|
|
|
|
|
// property - pre-checked for NULL
|
|
// value - NULL is a valid value, must be checked
|
|
jvmtiError
|
|
JvmtiEnv::SetSystemProperty(const char* property, const char* value) {
|
|
jvmtiError err =JVMTI_ERROR_NOT_AVAILABLE;
|
|
|
|
for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) {
|
|
if (strcmp(property, p->key()) == 0) {
|
|
if (p->set_value((char *)value)) {
|
|
err = JVMTI_ERROR_NONE;
|
|
}
|
|
}
|
|
}
|
|
return err;
|
|
} /* end SetSystemProperty */
|
|
|
|
#endif // !JVMTI_KERNEL
|