141 lines
4.4 KiB
C++
141 lines
4.4 KiB
C++
/*
|
|
* Copyright (c) 2019, 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 <string.h>
|
|
#include "jvmti.h"
|
|
|
|
extern "C" {
|
|
|
|
#define AGENT_NAME "agent2"
|
|
|
|
static JavaVM *java_vm = nullptr;
|
|
static jthread exp_thread = nullptr;
|
|
static jvmtiEnv *jvmti2 = nullptr;
|
|
static jint agent2_event_count = 0;
|
|
static bool fail_status = false;
|
|
|
|
static void
|
|
check_jvmti_status(JNIEnv* env, jvmtiError err, const char* msg) {
|
|
if (err != JVMTI_ERROR_NONE) {
|
|
printf("check_jvmti_status: JVMTI function returned error: %d\n", err);
|
|
fail_status = true;
|
|
env->FatalError(msg);
|
|
}
|
|
}
|
|
|
|
static void JNICALL
|
|
CompiledMethodLoad(jvmtiEnv* jvmti, jmethodID method,
|
|
jint code_size, const void* code_addr,
|
|
jint map_length, const jvmtiAddrLocationMap* map,
|
|
const void* compile_info) {
|
|
JNIEnv* env = nullptr;
|
|
jthread thread = nullptr;
|
|
char* name = nullptr;
|
|
char* sign = nullptr;
|
|
jvmtiError err;
|
|
|
|
// Posted on JavaThread's, so it is legal to obtain JNIEnv*
|
|
if (java_vm->GetEnv((void **) (&env), JNI_VERSION_9) != JNI_OK) {
|
|
fail_status = true;
|
|
return;
|
|
}
|
|
|
|
err = jvmti->GetCurrentThread(&thread);
|
|
check_jvmti_status(env, err, "CompiledMethodLoad: Error in JVMTI GetCurrentThread");
|
|
if (!env->IsSameObject(thread, exp_thread)) {
|
|
return; // skip events from unexpected threads
|
|
}
|
|
agent2_event_count++;
|
|
|
|
err = jvmti->GetMethodName(method, &name, &sign, nullptr);
|
|
check_jvmti_status(env, err, "CompiledMethodLoad: Error in JVMTI GetMethodName");
|
|
|
|
printf("%s: CompiledMethodLoad: %s%s\n", AGENT_NAME, name, sign);
|
|
fflush(nullptr);
|
|
}
|
|
|
|
JNIEXPORT jint JNICALL
|
|
Agent_OnLoad(JavaVM *jvm, char *options, void *reserved) {
|
|
jvmtiEventCallbacks callbacks;
|
|
jvmtiCapabilities caps;
|
|
jvmtiError err;
|
|
|
|
java_vm = jvm;
|
|
if (jvm->GetEnv((void **) (&jvmti2), JVMTI_VERSION_9) != JNI_OK) {
|
|
return JNI_ERR;
|
|
}
|
|
|
|
memset(&callbacks, 0, sizeof(callbacks));
|
|
callbacks.CompiledMethodLoad = &CompiledMethodLoad;
|
|
|
|
err = jvmti2->SetEventCallbacks(&callbacks, sizeof(jvmtiEventCallbacks));
|
|
if (err != JVMTI_ERROR_NONE) {
|
|
printf("Agent_OnLoad: Error in JVMTI SetEventCallbacks: %d\n", err);
|
|
fail_status = true;
|
|
return JNI_ERR;
|
|
}
|
|
|
|
memset(&caps, 0, sizeof(caps));
|
|
caps.can_generate_compiled_method_load_events = 1;
|
|
|
|
err = jvmti2->AddCapabilities(&caps);
|
|
if (err != JVMTI_ERROR_NONE) {
|
|
printf("Agent_OnLoad: Error in JVMTI AddCapabilities: %d\n", err);
|
|
fail_status = true;
|
|
return JNI_ERR;
|
|
}
|
|
return JNI_OK;
|
|
}
|
|
|
|
JNIEXPORT void JNICALL
|
|
Java_MyPackage_GenerateEventsTest_agent2SetThread(JNIEnv *env, jclass cls, jthread thread) {
|
|
jvmtiError err;
|
|
|
|
exp_thread = (jthread)env->NewGlobalRef(thread);
|
|
|
|
err = jvmti2->SetEventNotificationMode(JVMTI_ENABLE, JVMTI_EVENT_COMPILED_METHOD_LOAD, nullptr);
|
|
check_jvmti_status(env, err, "setThread2: Error in JVMTI SetEventNotificationMode: JVMTI_ENABLE");
|
|
}
|
|
|
|
JNIEXPORT jboolean JNICALL
|
|
Java_MyPackage_GenerateEventsTest_agent2FailStatus(JNIEnv *env, jclass cls) {
|
|
jvmtiError err;
|
|
|
|
err = jvmti2->SetEventNotificationMode(JVMTI_DISABLE, JVMTI_EVENT_COMPILED_METHOD_LOAD, nullptr);
|
|
check_jvmti_status(env, err, "check2: Error in JVMTI SetEventNotificationMode: JVMTI_DISABLE");
|
|
|
|
printf("\n");
|
|
if (agent2_event_count == 0) {
|
|
printf("check2: Zero events in agent2 as expected\n");
|
|
} else {
|
|
fail_status = true;
|
|
printf("check2: Unexpected non-zero event count in agent2: %d\n", agent2_event_count);
|
|
}
|
|
printf("\n");
|
|
fflush(nullptr);
|
|
|
|
return fail_status;
|
|
}
|
|
|
|
} // extern "C"
|