343 lines
11 KiB
C
343 lines
11 KiB
C
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/*
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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 <stdio.h>
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#include <string.h>
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#include "jvmti.h"
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#include "agent_common.h"
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#include "JVMTITools.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef JNI_ENV_ARG
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#ifdef __cplusplus
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#define JNI_ENV_ARG(x, y) y
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#define JNI_ENV_PTR(x) x
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#else
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#define JNI_ENV_ARG(x,y) x, y
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#define JNI_ENV_PTR(x) (*x)
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#endif
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#endif
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#define PASSED 0
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#define STATUS_FAILED 2
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#define WAIT_TIME (jlong)100
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static jvmtiEnv *jvmti = NULL;
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static jvmtiEventCallbacks callbacks;
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static jint result = PASSED;
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static jboolean printdump = JNI_FALSE;
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static int eventsCount = 0;
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static int count = 0;
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static jrawMonitorID cpu_lock;
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static int thr1_was_started = 0;
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jthread jthr(JNIEnv *env) {
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jclass thrClass;
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jmethodID cid;
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jthread res;
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thrClass = JNI_ENV_PTR(env)->FindClass(JNI_ENV_ARG(env, "java/lang/Thread"));
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cid = JNI_ENV_PTR(env)->GetMethodID(JNI_ENV_ARG(env, thrClass), "<init>", "()V");
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res = JNI_ENV_PTR(env)->NewObject(JNI_ENV_ARG(env, thrClass), cid);
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return res;
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}
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static void JNICALL
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sys_thread_4(jvmtiEnv* jvmti, JNIEnv* jni, void *p) {
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jvmtiError err;
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err = (*jvmti)->RawMonitorEnter(jvmti, cpu_lock);
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if (err != JVMTI_ERROR_NONE) {
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printf("(RawMonitorEnter#4) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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count |= 0x10;
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err = (*jvmti)->RawMonitorWait(jvmti, cpu_lock, WAIT_TIME);
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if (err != JVMTI_ERROR_NONE) {
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printf("(RawMonitorWait#4) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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count |= 0x20;
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err = (*jvmti)->RawMonitorExit(jvmti, cpu_lock);
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if (err != JVMTI_ERROR_NONE) {
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printf("(RawMonitorExit#4) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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}
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static void JNICALL
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sys_thread_1(jvmtiEnv* jvmti, JNIEnv* jni, void *p) {
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jvmtiError err;
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err = (*jvmti)->RawMonitorEnter(jvmti, cpu_lock);
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if (err != JVMTI_ERROR_NONE) {
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printf("(RawMonitorEnter#1) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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count |= 0x01;
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err = (*jvmti)->RunAgentThread(jvmti, jthr(jni), sys_thread_4, NULL,
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JVMTI_THREAD_MAX_PRIORITY);
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if (err != JVMTI_ERROR_NONE) {
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printf("(RunAgentThread#4) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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count |= 0x02;
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err = (*jvmti)->RawMonitorExit(jvmti, cpu_lock);
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if (err != JVMTI_ERROR_NONE) {
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printf("(RawMonitorExit#1) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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}
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static void JNICALL
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sys_thread_2(jvmtiEnv* jvmti, JNIEnv* jni, void *p) {
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jvmtiError err;
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err = (*jvmti)->RawMonitorEnter(jvmti, cpu_lock);
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if (err != JVMTI_ERROR_NONE) {
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printf("(RawMonitorEnter#2) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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count |= 0x04;
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err = (*jvmti)->RawMonitorWait(jvmti, cpu_lock, WAIT_TIME);
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if (err != JVMTI_ERROR_NONE) {
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printf("(RawMonitorWait#2) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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count |= 0x08;
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err = (*jvmti)->RawMonitorExit(jvmti, cpu_lock);
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if (err != JVMTI_ERROR_NONE) {
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printf("(RawMonitorExit#2) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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}
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static void JNICALL
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sys_thread_3(jvmtiEnv* jvmti, JNIEnv* jni, void *p) {
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while (1) {
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}
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}
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static void JNICALL
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sys_thread_5(jvmtiEnv* jvmti, JNIEnv* jni, void *p) {
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jvmtiError err;
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err = (*jvmti)->RawMonitorEnter(jvmti, cpu_lock);
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if (err != JVMTI_ERROR_NONE) {
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printf("(RawMonitorEnter#5) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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count |= 0x40;
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err = (*jvmti)->RawMonitorWait(jvmti, cpu_lock, WAIT_TIME);
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if (err != JVMTI_ERROR_NONE) {
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printf("(RawMonitorWait#5) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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count |= 0x80;
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err = (*jvmti)->RawMonitorExit(jvmti, cpu_lock);
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if (err != JVMTI_ERROR_NONE) {
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printf("(RawMonitorExit#5) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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}
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void JNICALL VMInit(jvmtiEnv *jvmti_env, JNIEnv *env, jthread thr) {
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jvmtiError err;
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if (printdump == JNI_TRUE) {
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printf(">>> VMInit: enabling ThreadStart\n");
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}
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err = (*jvmti_env)->SetEventNotificationMode(jvmti_env, JVMTI_ENABLE,
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JVMTI_EVENT_THREAD_START, NULL);
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if (err != JVMTI_ERROR_NONE) {
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printf("Failed to enable JVMTI_EVENT_THREAD_START: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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}
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void JNICALL
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ThreadStart(jvmtiEnv *jvmti_env, JNIEnv *env, jthread thread) {
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jvmtiError err;
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jvmtiThreadInfo thrInfo;
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eventsCount++;
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err = (*jvmti_env)->GetThreadInfo(jvmti_env, thread, &thrInfo);
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if (err != JVMTI_ERROR_NONE) {
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printf("(GetThreadInfo#%d) unexpected error: %s (%d)\n",
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eventsCount, TranslateError(err), err);
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result = STATUS_FAILED;
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}
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if (printdump == JNI_TRUE) {
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printf(">>> ThreadStart: %s\n", thrInfo.name);
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}
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/* workaround to avoid bug:
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* 4334503 THREAD_START event is still sent twice for user-defined thread */
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if (strcmp(thrInfo.name, "thr1") == 0 && !thr1_was_started) {
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thr1_was_started = 1;
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err = (*jvmti_env)->RunAgentThread(jvmti_env, jthr((JNIEnv *)env),
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sys_thread_1, NULL, JVMTI_THREAD_MAX_PRIORITY);
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if (err != JVMTI_ERROR_NONE) {
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printf("(RunAgentThread#1) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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err = (*jvmti_env)->RunAgentThread(jvmti_env, jthr((JNIEnv *)env),
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sys_thread_2, NULL, JVMTI_THREAD_NORM_PRIORITY);
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if (err != JVMTI_ERROR_NONE) {
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printf("(RunAgentThread#2) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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err = (*jvmti_env)->RunAgentThread(jvmti_env, jthr((JNIEnv *)env),
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sys_thread_3, NULL, JVMTI_THREAD_MIN_PRIORITY);
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if (err != JVMTI_ERROR_NONE) {
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printf("(RunAgentThread#3) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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}
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}
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#ifdef STATIC_BUILD
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JNIEXPORT jint JNICALL Agent_OnLoad_agentthr001(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_agentthr001(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_agentthr001(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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jvmtiError err;
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jint res;
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if (options != NULL && strcmp(options, "printdump") == 0) {
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printdump = JNI_TRUE;
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}
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res = JNI_ENV_PTR(jvm)->GetEnv(JNI_ENV_ARG(jvm, (void **) &jvmti),
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JVMTI_VERSION_1_1);
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if (res != JNI_OK || jvmti == NULL) {
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printf("Wrong result of a valid call to GetEnv!\n");
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return JNI_ERR;
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}
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err = (*jvmti)->CreateRawMonitor(jvmti, "_CPU lock", &cpu_lock);
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if (err != JVMTI_ERROR_NONE) {
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printf("(CreateRawMonitor) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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return JNI_ERR;
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}
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callbacks.VMInit = &VMInit;
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callbacks.ThreadStart = &ThreadStart;
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err = (*jvmti)->SetEventCallbacks(jvmti, &callbacks, sizeof(callbacks));
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if (err != JVMTI_ERROR_NONE) {
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printf("(SetEventCallbacks) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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return JNI_ERR;
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}
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err = (*jvmti)->SetEventNotificationMode(jvmti, JVMTI_ENABLE,
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JVMTI_EVENT_VM_INIT, NULL);
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if (err != JVMTI_ERROR_NONE) {
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printf("Failed to enable JVMTI_EVENT_VM_INIT: %s (%d)\n",
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TranslateError(err), err);
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return JNI_ERR;
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}
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return JNI_OK;
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}
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JNIEXPORT void JNICALL
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Java_nsk_jvmti_RunAgentThread_agentthr001_startSysThr(JNIEnv *env, jclass cls) {
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jvmtiError err;
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err = (*jvmti)->RunAgentThread(jvmti, jthr(env), sys_thread_5, NULL,
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JVMTI_THREAD_MAX_PRIORITY);
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if (err != JVMTI_ERROR_NONE) {
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printf("(RunAgentThread#5) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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}
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JNIEXPORT jboolean JNICALL
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Java_nsk_jvmti_RunAgentThread_agentthr001_isOver(JNIEnv *env, jclass cls) {
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return (count == 0xFF ? JNI_TRUE : JNI_FALSE);
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}
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JNIEXPORT jint JNICALL
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Java_nsk_jvmti_RunAgentThread_agentthr001_getRes(JNIEnv *env, jclass cls) {
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jvmtiError err;
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if (printdump == JNI_TRUE) {
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printf(">>> getRes: disabling ThreadStart\n");
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}
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err = (*jvmti)->SetEventNotificationMode(jvmti, JVMTI_DISABLE,
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JVMTI_EVENT_THREAD_START, NULL);
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if (err != JVMTI_ERROR_NONE) {
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printf("Failed to disable JVMTI_EVENT_THREAD_START: %s (%d)\n",
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TranslateError(err), err);
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result = STATUS_FAILED;
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}
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if (count != 0xFF) {
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printf("Some of the threads have not started (0x%x) !\n", count);
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result = STATUS_FAILED;
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}
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if (printdump == JNI_TRUE) {
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printf(">>> total of thread start events: %d\n", eventsCount);
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}
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return result;
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}
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#ifdef __cplusplus
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}
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#endif
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