blob: d54651324d8bc1c15db441e3d0ee69865f2a4b31 [file] [log] [blame]
/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "gc_callbacks.h"
#include <stdio.h>
#include <string.h>
#include "base/macros.h"
#include "jni.h"
#include "openjdkjvmti/jvmti.h"
#include "ti-agent/common_load.h"
namespace art {
namespace Test908GcStartFinish {
static size_t starts = 0;
static size_t finishes = 0;
static void JNICALL GarbageCollectionFinish(jvmtiEnv* ti_env ATTRIBUTE_UNUSED) {
finishes++;
}
static void JNICALL GarbageCollectionStart(jvmtiEnv* ti_env ATTRIBUTE_UNUSED) {
starts++;
}
extern "C" JNIEXPORT void JNICALL Java_Main_setupGcCallback(
JNIEnv* env ATTRIBUTE_UNUSED, jclass klass ATTRIBUTE_UNUSED) {
jvmtiEventCallbacks callbacks;
memset(&callbacks, 0, sizeof(jvmtiEventCallbacks));
callbacks.GarbageCollectionFinish = GarbageCollectionFinish;
callbacks.GarbageCollectionStart = GarbageCollectionStart;
jvmtiError ret = jvmti_env->SetEventCallbacks(&callbacks, sizeof(callbacks));
if (ret != JVMTI_ERROR_NONE) {
char* err;
jvmti_env->GetErrorName(ret, &err);
printf("Error setting callbacks: %s\n", err);
}
}
extern "C" JNIEXPORT void JNICALL Java_Main_enableGcTracking(JNIEnv* env ATTRIBUTE_UNUSED,
jclass klass ATTRIBUTE_UNUSED,
jboolean enable) {
jvmtiError ret = jvmti_env->SetEventNotificationMode(
enable ? JVMTI_ENABLE : JVMTI_DISABLE,
JVMTI_EVENT_GARBAGE_COLLECTION_START,
nullptr);
if (ret != JVMTI_ERROR_NONE) {
char* err;
jvmti_env->GetErrorName(ret, &err);
printf("Error enabling/disabling gc callbacks: %s\n", err);
}
ret = jvmti_env->SetEventNotificationMode(
enable ? JVMTI_ENABLE : JVMTI_DISABLE,
JVMTI_EVENT_GARBAGE_COLLECTION_FINISH,
nullptr);
if (ret != JVMTI_ERROR_NONE) {
char* err;
jvmti_env->GetErrorName(ret, &err);
printf("Error enabling/disabling gc callbacks: %s\n", err);
}
}
extern "C" JNIEXPORT jint JNICALL Java_Main_getGcStarts(JNIEnv* env ATTRIBUTE_UNUSED,
jclass klass ATTRIBUTE_UNUSED) {
jint result = static_cast<jint>(starts);
starts = 0;
return result;
}
extern "C" JNIEXPORT jint JNICALL Java_Main_getGcFinishes(JNIEnv* env ATTRIBUTE_UNUSED,
jclass klass ATTRIBUTE_UNUSED) {
jint result = static_cast<jint>(finishes);
finishes = 0;
return result;
}
// Don't do anything
jint OnLoad(JavaVM* vm,
char* options ATTRIBUTE_UNUSED,
void* reserved ATTRIBUTE_UNUSED) {
if (vm->GetEnv(reinterpret_cast<void**>(&jvmti_env), JVMTI_VERSION_1_0)) {
printf("Unable to get jvmti env!\n");
return 1;
}
return 0;
}
} // namespace Test908GcStartFinish
} // namespace art