194 lines
7.6 KiB
C++
194 lines
7.6 KiB
C++
/*
|
|
* Copyright (c) 2003, 2024, Oracle and/or its affiliates. All rights reserved.
|
|
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
|
*
|
|
* This code is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License version 2 only, as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This code is distributed in the hope that it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
* version 2 for more details (a copy is included in the LICENSE file that
|
|
* accompanied this code).
|
|
*
|
|
* You should have received a copy of the GNU General Public License version
|
|
* 2 along with this work; if not, write to the Free Software Foundation,
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
|
|
* or visit www.oracle.com if you need additional information or have any
|
|
* questions.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include "jvmti.h"
|
|
#include "jvmti_common.hpp"
|
|
#include "../get_stack_trace.hpp"
|
|
|
|
extern "C" {
|
|
|
|
|
|
static jvmtiEnv *jvmti = nullptr;
|
|
static jvmtiEventCallbacks callbacks;
|
|
static jboolean wasFramePop = JNI_FALSE;
|
|
static jmethodID mid_checkPoint, mid_chain4;
|
|
static jbyteArray classBytes;
|
|
static frame_info expected_platform_frames[] = {
|
|
{"Lgetstacktr08$TestThread;", "checkPoint", "()V"},
|
|
{"Lgetstacktr08$TestThread;", "chain5", "()V"},
|
|
{"Lgetstacktr08$TestThread;", "chain4", "()V"},
|
|
{"Lgetstacktr08;", "nativeChain", "(Ljava/lang/Class;)V"},
|
|
{"Lgetstacktr08$TestThread;", "chain3", "()V"},
|
|
{"Lgetstacktr08$TestThread;", "chain2", "()V"},
|
|
{"Lgetstacktr08$TestThread;", "chain1", "()V"},
|
|
{"Lgetstacktr08$TestThread;", "run", "()V"},
|
|
{"Ljava/lang/Thread;", "runWith", "(Ljava/lang/Object;Ljava/lang/Runnable;)V"},
|
|
{"Ljava/lang/Thread;", "run", "()V"},
|
|
};
|
|
|
|
static frame_info expected_virtual_frames[] = {
|
|
{"Lgetstacktr08$TestThread;", "checkPoint", "()V"},
|
|
{"Lgetstacktr08$TestThread;", "chain5", "()V"},
|
|
{"Lgetstacktr08$TestThread;", "chain4", "()V"},
|
|
{"Lgetstacktr08;", "nativeChain", "(Ljava/lang/Class;)V"},
|
|
{"Lgetstacktr08$TestThread;", "chain3", "()V"},
|
|
{"Lgetstacktr08$TestThread;", "chain2", "()V"},
|
|
{"Lgetstacktr08$TestThread;", "chain1", "()V"},
|
|
{"Lgetstacktr08$TestThread;", "run", "()V"},
|
|
{"Ljava/lang/VirtualThread;", "runWith", "(Ljava/lang/Object;Ljava/lang/Runnable;)V"},
|
|
{"Ljava/lang/VirtualThread;", "run", "(Ljava/lang/Runnable;)V"},
|
|
{"Ljava/lang/VirtualThread$VThreadContinuation;", "lambda$new$0", "(Ljava/lang/VirtualThread;Ljava/lang/Runnable;)V"},
|
|
{"Ljava/lang/VirtualThread$VThreadContinuation$$Lambda;", "run", "()V"},
|
|
{"Ljdk/internal/vm/Continuation;", "enter0", "()V"},
|
|
{"Ljdk/internal/vm/Continuation;", "enter", "(Ljdk/internal/vm/Continuation;Z)V"},
|
|
};
|
|
|
|
int compare_stack_trace(jvmtiEnv *jvmti, JNIEnv *jni, jthread thread, int offset = 0) {
|
|
frame_info *expected_frames = jni->IsVirtualThread(thread)
|
|
? expected_virtual_frames
|
|
: expected_platform_frames;
|
|
int expected_number_of_stack_frames = jni->IsVirtualThread(thread)
|
|
? ((int) (sizeof(expected_virtual_frames) / sizeof(frame_info)))
|
|
: ((int) (sizeof(expected_platform_frames) / sizeof(frame_info)));
|
|
return compare_stack_trace(jvmti, jni, thread, expected_frames, expected_number_of_stack_frames, offset);
|
|
}
|
|
|
|
void JNICALL Breakpoint(jvmtiEnv *jvmti_env, JNIEnv *jni, jthread thread, jmethodID method, jlocation location) {
|
|
if (mid_checkPoint != method) {
|
|
jni->FatalError("ERROR: don't know where we get called from");
|
|
}
|
|
check_jvmti_status(jni, jvmti_env->ClearBreakpoint(mid_checkPoint, 0), "ClearBreakpoint failed.");
|
|
|
|
if (!compare_stack_trace(jvmti_env, jni, thread)) {
|
|
jni->ThrowNew(jni->FindClass("java/lang/RuntimeException"), "Stacktrace differs from expected.");
|
|
return;
|
|
}
|
|
|
|
set_event_notification_mode(jvmti_env, jni, JVMTI_ENABLE, JVMTI_EVENT_SINGLE_STEP, thread);
|
|
LOG(">>> stepping ...\n");
|
|
}
|
|
|
|
void JNICALL SingleStep(jvmtiEnv *jvmti_env, JNIEnv *jni,
|
|
jthread thread, jmethodID method, jlocation location) {
|
|
jclass klass;
|
|
jvmtiClassDefinition classDef;
|
|
LOG(">>> In SingleStep ...\n");
|
|
print_stack_trace(jvmti_env, jni, thread);
|
|
|
|
if (wasFramePop == JNI_FALSE) {
|
|
|
|
if (!compare_stack_trace(jvmti_env, jni, thread, 1)) {
|
|
// Disable single-stepping to don't cause stackoverflow
|
|
set_event_notification_mode(jvmti_env, jni, JVMTI_DISABLE, JVMTI_EVENT_SINGLE_STEP, thread);
|
|
jni->ThrowNew(jni->FindClass("java/lang/RuntimeException"), "Stacktrace differs from expected.");
|
|
}
|
|
|
|
LOG(">>> popping frame ...\n");
|
|
|
|
check_jvmti_status(jni, jvmti_env->PopFrame(thread), "PopFrame failed.");
|
|
wasFramePop = JNI_TRUE;
|
|
} else {
|
|
set_event_notification_mode(jvmti_env, jni, JVMTI_DISABLE, JVMTI_EVENT_SINGLE_STEP, thread);
|
|
if (!compare_stack_trace(jvmti_env, jni, thread, 2)) {
|
|
jni->ThrowNew(jni->FindClass("java/lang/RuntimeException"), "Stacktrace differs from expected.");
|
|
}
|
|
|
|
|
|
if (classBytes == nullptr) {
|
|
jni->FatalError("ERROR: don't have any bytes");
|
|
}
|
|
|
|
check_jvmti_status(jni, jvmti_env->GetMethodDeclaringClass(method, &klass), "GetMethodDeclaringClass failed.");
|
|
LOG(">>> redefining class ...\n");
|
|
|
|
classDef.klass = klass;
|
|
classDef.class_byte_count = jni->GetArrayLength(classBytes);
|
|
classDef.class_bytes = (unsigned char *) jni->GetByteArrayElements(classBytes, nullptr);
|
|
check_jvmti_status(jni, jvmti_env->RedefineClasses(1, &classDef), "RedefineClasses failed.");
|
|
|
|
jni->DeleteGlobalRef(classBytes);
|
|
classBytes = nullptr;
|
|
if (!compare_stack_trace(jvmti_env, jni, thread, 2)) {
|
|
jni->ThrowNew(jni->FindClass("java/lang/RuntimeException"), "Stacktrace differs from expected.");
|
|
}
|
|
}
|
|
}
|
|
|
|
JNIEXPORT jint JNICALL
|
|
Agent_OnLoad(JavaVM *jvm, char *options, void *reserved) {
|
|
jvmtiError err;
|
|
jint res = jvm->GetEnv((void **) &jvmti, JVMTI_VERSION_1_1);
|
|
if (res != JNI_OK || jvmti == nullptr) {
|
|
LOG("Wrong result of a valid call to GetEnv!\n");
|
|
return JNI_ERR;
|
|
}
|
|
|
|
jvmtiCapabilities caps;
|
|
memset(&caps, 0, sizeof(caps));
|
|
caps.can_generate_breakpoint_events = 1;
|
|
caps.can_generate_single_step_events = 1;
|
|
caps.can_pop_frame = 1;
|
|
caps.can_redefine_classes = 1;
|
|
|
|
err = jvmti->AddCapabilities(&caps);
|
|
if (err != JVMTI_ERROR_NONE) {
|
|
LOG("(AddCapabilities) unexpected error: %s (%d)\n", TranslateError(err), err);
|
|
return JNI_ERR;
|
|
}
|
|
|
|
callbacks.Breakpoint = &Breakpoint;
|
|
callbacks.SingleStep = &SingleStep;
|
|
err = jvmti->SetEventCallbacks(&callbacks, sizeof(callbacks));
|
|
if (err != JVMTI_ERROR_NONE) {
|
|
LOG("(SetEventCallbacks) unexpected error: %s (%d)\n", TranslateError(err), err);
|
|
return JNI_ERR;
|
|
}
|
|
return JNI_OK;
|
|
}
|
|
|
|
JNIEXPORT void JNICALL
|
|
Java_getstacktr08_getReady(JNIEnv *jni, jclass cls, jclass clazz, jbyteArray bytes) {
|
|
classBytes = (jbyteArray) jni->NewGlobalRef(bytes);
|
|
wasFramePop = JNI_FALSE;
|
|
mid_checkPoint = jni->GetStaticMethodID(clazz, "checkPoint", "()V");
|
|
mid_chain4 = jni->GetStaticMethodID(clazz, "chain4", "()V");
|
|
|
|
check_jvmti_status(jni, jvmti->SetBreakpoint(mid_checkPoint, 0), "SetBreakpoint failed.");
|
|
set_event_notification_mode(jvmti, jni, JVMTI_ENABLE, JVMTI_EVENT_BREAKPOINT, nullptr);
|
|
}
|
|
|
|
JNIEXPORT void JNICALL
|
|
Java_getstacktr08_nativeChain(JNIEnv *jni, jclass cls, jclass clazz) {
|
|
if (mid_chain4 != nullptr) {
|
|
jni->CallStaticVoidMethod(clazz, mid_chain4);
|
|
}
|
|
if (!compare_stack_trace(jvmti, jni, get_current_thread(jvmti, jni), 3)) {
|
|
jni->ThrowNew(jni->FindClass("java/lang/RuntimeException"), "Stacktrace differs from expected.");
|
|
}
|
|
}
|
|
|
|
|
|
}
|