225 lines
7.4 KiB
C++
225 lines
7.4 KiB
C++
/*
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* Copyright (c) 2003, 2018, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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#include <stdlib.h>
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#include <string.h>
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#include "jni_tools.h"
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#include "agent_common.h"
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#include "jvmti_tools.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define STATUS_FAILED 2
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#define PASSED 0
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/* tested method */
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static const char *METHOD[] = {
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"nativeMethod", "()V"
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};
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/* counter for the original method calls */
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static volatile int origCalls = 0;
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/* counter for the redirected method calls */
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static volatile int redirCalls = 0;
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static volatile jint result = PASSED;
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static jvmtiEnv *jvmti = NULL;
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static jvmtiEventCallbacks callbacks;
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static jrawMonitorID countLock;
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/* method to be redirected used to check the native method redirection
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through the NativeMethodBind event */
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JNIEXPORT void JNICALL
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Java_nsk_jvmti_NativeMethodBind_nativemethbind004_nativeMethod(
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JNIEnv *env, jobject obj) {
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origCalls++;
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NSK_DISPLAY1("inside the nativeMethod(): calls=%d\n",
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origCalls);
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}
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/* redirected method used to check the native method redirection
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through the NativeMethodBind event */
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static void JNICALL
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redirNativeMethod(JNIEnv *env, jobject obj) {
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redirCalls++;
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NSK_DISPLAY1("inside the redirNativeMethod(): calls=%d\n",
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redirCalls);
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}
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static void lock(jvmtiEnv *jvmti_env, JNIEnv *jni_env) {
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if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(RawMonitorEnter,
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jvmti_env, countLock)))
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NSK_CPP_STUB2(FatalError, jni_env,
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"failed to enter a raw monitor\n");
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}
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static void unlock(jvmtiEnv *jvmti_env, JNIEnv *jni_env) {
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if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(RawMonitorExit,
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jvmti_env, countLock)))
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NSK_CPP_STUB2(FatalError, jni_env,
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"failed to exit a raw monitor\n");
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}
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/** callback functions **/
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void JNICALL
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NativeMethodBind(jvmtiEnv *jvmti_env, JNIEnv* jni_env, jthread thread,
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jmethodID method, void *addr, void **new_addr) {
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jvmtiPhase phase;
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char *methNam, *methSig;
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lock(jvmti_env, jni_env);
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NSK_DISPLAY0(">>>> NativeMethodBind event received\n");
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if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(GetPhase, jvmti_env, &phase))) {
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result = STATUS_FAILED;
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unlock(jvmti_env, jni_env);
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return;
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}
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if (phase != JVMTI_PHASE_LIVE && phase != JVMTI_PHASE_START) {
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unlock(jvmti_env, jni_env);
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return;
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}
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if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB5(GetMethodName,
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jvmti_env, method, &methNam, &methSig, NULL))) {
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result = STATUS_FAILED;
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NSK_COMPLAIN0("TEST FAILED: unable to get method name during NativeMethodBind callback\n\n");
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unlock(jvmti_env, jni_env);
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return;
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}
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if ((strcmp(methNam,METHOD[0]) == 0) &&
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(strcmp(methSig,METHOD[1]) == 0)) {
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NSK_DISPLAY4("\tmethod: \"%s %s\"\nRedirecting the method address from 0x%p to 0x%p ...\n",
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methNam, methSig, addr, (void*) redirNativeMethod);
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*new_addr = (void*) redirNativeMethod;
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}
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if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(Deallocate,
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jvmti_env, (unsigned char*) methNam))) {
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result = STATUS_FAILED;
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NSK_COMPLAIN0("TEST FAILED: unable to deallocate memory storing method name\n\n");
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}
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if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(Deallocate,
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jvmti_env, (unsigned char*) methSig))) {
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result = STATUS_FAILED;
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NSK_COMPLAIN0("TEST FAILED: unable to deallocate memory storing method signature\n\n");
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}
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NSK_DISPLAY0("<<<<\n\n");
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unlock(jvmti_env, jni_env);
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}
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/************************/
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JNIEXPORT jint JNICALL
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Java_nsk_jvmti_NativeMethodBind_nativemethbind004_check(
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JNIEnv *env, jobject obj) {
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if (origCalls == 0)
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NSK_DISPLAY0("CHECK PASSED: original nativeMethod() to be redirected\n\
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\thas not been invoked as expected\n");
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else {
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result = STATUS_FAILED;
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NSK_COMPLAIN1("TEST FAILED: nativeMethod() has not been redirected by the NativeMethodBind:\n\
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\t%d calls\texpected: 0\n\n", origCalls);
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}
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if (redirCalls == 1)
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NSK_DISPLAY1("CHECK PASSED: nativeMethod() has been redirected by the NativeMethodBind:\n\
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\t%d calls of redirected method as expected\n", redirCalls);
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else {
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result = STATUS_FAILED;
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NSK_COMPLAIN1("TEST FAILED: nativeMethod() has not been redirected by the NativeMethodBind:\n\
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\t%d calls of redirected method\texpected: 1\n\n", redirCalls);
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}
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return result;
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}
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#ifdef STATIC_BUILD
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JNIEXPORT jint JNICALL Agent_OnLoad_nativemethbind004(JavaVM *jvm, char *options, void *reserved) {
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return Agent_Initialize(jvm, options, reserved);
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}
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JNIEXPORT jint JNICALL Agent_OnAttach_nativemethbind004(JavaVM *jvm, char *options, void *reserved) {
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return Agent_Initialize(jvm, options, reserved);
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}
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JNIEXPORT jint JNI_OnLoad_nativemethbind004(JavaVM *jvm, char *options, void *reserved) {
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return JNI_VERSION_1_8;
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}
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#endif
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jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
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jvmtiCapabilities caps;
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/* init framework and parse options */
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if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))
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return JNI_ERR;
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/* create JVMTI environment */
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if (!NSK_VERIFY((jvmti =
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nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL))
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return JNI_ERR;
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/* create a raw monitor */
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if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(CreateRawMonitor,
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jvmti, "_counter_lock", &countLock)))
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return JNI_ERR;
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/* add capability to generate compiled method events */
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memset(&caps, 0, sizeof(jvmtiCapabilities));
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caps.can_generate_native_method_bind_events = 1;
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if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(AddCapabilities,
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jvmti, &caps)))
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return JNI_ERR;
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if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(GetCapabilities,
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jvmti, &caps)))
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return JNI_ERR;
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if (!caps.can_generate_native_method_bind_events)
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NSK_DISPLAY0("Warning: generation of native method bind events is not implemented\n");
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/* set event callback */
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NSK_DISPLAY0("setting event callbacks ...\n");
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(void) memset(&callbacks, 0, sizeof(callbacks));
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callbacks.NativeMethodBind = &NativeMethodBind;
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if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(SetEventCallbacks,
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jvmti, &callbacks, sizeof(callbacks))))
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return JNI_ERR;
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NSK_DISPLAY0("setting event callbacks done\nenabling JVMTI events ...\n");
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if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,
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jvmti, JVMTI_ENABLE, JVMTI_EVENT_NATIVE_METHOD_BIND, NULL)))
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return JNI_ERR;
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NSK_DISPLAY0("enabling the events done\n\n");
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return JNI_OK;
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}
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#ifdef __cplusplus
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}
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#endif
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