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/*
* 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 <stdlib.h>
#include <string.h>
#include <jvmti.h>
#include "agent_common.hpp"
#include "nsk_tools.hpp"
#include "JVMTITools.hpp"
#include "jvmti_tools.hpp"
extern "C" {
#define STATUS_FAILED 2
#define PASSED 0
static volatile jint result = PASSED;
static volatile int gcstart = 0;
static volatile int gcfinish = 0;
static jvmtiEnv *jvmti = nullptr;
static jvmtiEventCallbacks callbacks;
static jvmtiCapabilities caps;
/** callback functions **/
void JNICALL
GarbageCollectionStart(jvmtiEnv *jvmti_env) {
gcstart++;
NSK_DISPLAY1("GarbageCollectionStart event #%d received\n",
gcstart);
if (gcstart != (gcfinish+1)) {
result = STATUS_FAILED;
NSK_COMPLAIN2(
"TEST FAILED: GarbageCollectionStart event has no a matched pair GarbageCollectionFinish:\n"
"\t%d GarbageCollectionStart events\t%d GarbageCollectionFinish events\n\n",
gcstart, gcfinish);
}
else
NSK_DISPLAY0("CHECK PASSED: GarbageCollectionStart event has a matched pair GarbageCollectionFinish as expected\n\n");
}
void JNICALL
GarbageCollectionFinish(jvmtiEnv *jvmti_env) {
gcfinish++;
NSK_DISPLAY1("GarbageCollectionFinish event #%d received\n",
gcfinish);
if (gcstart != gcfinish) {
result = STATUS_FAILED;
NSK_COMPLAIN2(
"TEST FAILED: GarbageCollectionFinish event has no a matched pair GarbageCollectionStart:\n"
"\t%d GarbageCollectionStart events\t%d GarbageCollectionFinish events\n\n",
gcstart, gcfinish);
}
else
NSK_DISPLAY0("CHECK PASSED: GarbageCollectionFinish event has a matched pair GarbageCollectionStart as expected\n\n");
}
void JNICALL
VMDeath(jvmtiEnv *jvmti_env, JNIEnv *env) {
NSK_DISPLAY0("VMDeath event received\n");
if (gcstart != gcfinish || result == STATUS_FAILED) {
NSK_COMPLAIN2(
"TEST FAILED: some GarbageCollectionFinish events have no a matched pair GarbageCollectionStart:\n"
"\t%d GarbageCollectionStart events\t%d GarbageCollectionFinish events\n\n",
gcstart, gcfinish);
exit(95 + STATUS_FAILED);
}
else
NSK_DISPLAY0("CHECK PASSED: all GarbageCollectionStart/GarbageCollectionFinish events have a matched pair as expected\n\n");
}
/************************/
#ifdef STATIC_BUILD
JNIEXPORT jint JNICALL Agent_OnLoad_gcstart001(JavaVM *jvm, char *options, void *reserved) {
return Agent_Initialize(jvm, options, reserved);
}
JNIEXPORT jint JNICALL Agent_OnAttach_gcstart001(JavaVM *jvm, char *options, void *reserved) {
return Agent_Initialize(jvm, options, reserved);
}
JNIEXPORT jint JNI_OnLoad_gcstart001(JavaVM *jvm, char *options, void *reserved) {
return JNI_VERSION_1_8;
}
#endif
jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
/* init framework and parse options */
if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))
return JNI_ERR;
/* create JVMTI environment */
if (!NSK_VERIFY((jvmti =
nsk_jvmti_createJVMTIEnv(jvm, reserved)) != nullptr))
return JNI_ERR;
/* add capability to generate compiled method events */
memset(&caps, 0, sizeof(jvmtiCapabilities));
caps.can_generate_garbage_collection_events = 1;
if (!NSK_JVMTI_VERIFY(jvmti->AddCapabilities(&caps)))
return JNI_ERR;
if (!NSK_JVMTI_VERIFY(jvmti->GetCapabilities(&caps)))
return JNI_ERR;
if (!caps.can_generate_garbage_collection_events)
NSK_DISPLAY0("Warning: generation of garbage collection events is not implemented\n");
/* set event callback */
NSK_DISPLAY0("setting event callbacks ...\n");
(void) memset(&callbacks, 0, sizeof(callbacks));
callbacks.VMDeath = &VMDeath;
callbacks.GarbageCollectionStart = &GarbageCollectionStart;
callbacks.GarbageCollectionFinish = &GarbageCollectionFinish;
if (!NSK_JVMTI_VERIFY(jvmti->SetEventCallbacks(&callbacks, sizeof(callbacks))))
return JNI_ERR;
NSK_DISPLAY0("setting event callbacks done\nenabling JVMTI events ...\n");
if (!NSK_JVMTI_VERIFY(jvmti->SetEventNotificationMode(JVMTI_ENABLE, JVMTI_EVENT_VM_DEATH, nullptr)))
return JNI_ERR;
if (!NSK_JVMTI_VERIFY(jvmti->SetEventNotificationMode(JVMTI_ENABLE, JVMTI_EVENT_GARBAGE_COLLECTION_START, nullptr)))
return JNI_ERR;
if (!NSK_JVMTI_VERIFY(jvmti->SetEventNotificationMode(JVMTI_ENABLE, JVMTI_EVENT_GARBAGE_COLLECTION_FINISH, nullptr)))
return JNI_ERR;
NSK_DISPLAY0("enabling the events done\n\n");
return JNI_OK;
}
}
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