| /* |
| * Copyright (c) 2003, 2018, 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 "agent_common.h" |
| #include "JVMTITools.h" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #ifndef JNI_ENV_ARG |
| |
| #ifdef __cplusplus |
| #define JNI_ENV_ARG(x, y) y |
| #define JNI_ENV_PTR(x) x |
| #else |
| #define JNI_ENV_ARG(x,y) x, y |
| #define JNI_ENV_PTR(x) (*x) |
| #endif |
| |
| #endif |
| |
| #define PASSED 0 |
| #define STATUS_FAILED 2 |
| #define WAIT_TIME (jlong)100 |
| |
| static jvmtiEnv *jvmti = NULL; |
| static jvmtiEventCallbacks callbacks; |
| static jint result = PASSED; |
| static jboolean printdump = JNI_FALSE; |
| static int eventsCount = 0; |
| static int count = 0; |
| static jrawMonitorID cpu_lock; |
| static int thr1_was_started = 0; |
| |
| jthread jthr(JNIEnv *env) { |
| jclass thrClass; |
| jmethodID cid; |
| jthread res; |
| |
| thrClass = JNI_ENV_PTR(env)->FindClass(JNI_ENV_ARG(env, "java/lang/Thread")); |
| cid = JNI_ENV_PTR(env)->GetMethodID(JNI_ENV_ARG(env, thrClass), "<init>", "()V"); |
| res = JNI_ENV_PTR(env)->NewObject(JNI_ENV_ARG(env, thrClass), cid); |
| return res; |
| } |
| |
| static void JNICALL |
| sys_thread_4(jvmtiEnv* jvmti, JNIEnv* jni, void *p) { |
| jvmtiError err; |
| |
| err = (*jvmti)->RawMonitorEnter(jvmti, cpu_lock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(RawMonitorEnter#4) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| count |= 0x10; |
| err = (*jvmti)->RawMonitorWait(jvmti, cpu_lock, WAIT_TIME); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(RawMonitorWait#4) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| count |= 0x20; |
| err = (*jvmti)->RawMonitorExit(jvmti, cpu_lock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(RawMonitorExit#4) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } |
| |
| static void JNICALL |
| sys_thread_1(jvmtiEnv* jvmti, JNIEnv* jni, void *p) { |
| jvmtiError err; |
| |
| err = (*jvmti)->RawMonitorEnter(jvmti, cpu_lock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(RawMonitorEnter#1) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| count |= 0x01; |
| |
| err = (*jvmti)->RunAgentThread(jvmti, jthr(jni), sys_thread_4, NULL, |
| JVMTI_THREAD_MAX_PRIORITY); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(RunAgentThread#4) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| count |= 0x02; |
| err = (*jvmti)->RawMonitorExit(jvmti, cpu_lock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(RawMonitorExit#1) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } |
| |
| static void JNICALL |
| sys_thread_2(jvmtiEnv* jvmti, JNIEnv* jni, void *p) { |
| jvmtiError err; |
| |
| err = (*jvmti)->RawMonitorEnter(jvmti, cpu_lock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(RawMonitorEnter#2) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| count |= 0x04; |
| err = (*jvmti)->RawMonitorWait(jvmti, cpu_lock, WAIT_TIME); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(RawMonitorWait#2) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| count |= 0x08; |
| err = (*jvmti)->RawMonitorExit(jvmti, cpu_lock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(RawMonitorExit#2) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } |
| |
| static void JNICALL |
| sys_thread_3(jvmtiEnv* jvmti, JNIEnv* jni, void *p) { |
| while (1) { |
| } |
| } |
| |
| static void JNICALL |
| sys_thread_5(jvmtiEnv* jvmti, JNIEnv* jni, void *p) { |
| jvmtiError err; |
| |
| err = (*jvmti)->RawMonitorEnter(jvmti, cpu_lock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(RawMonitorEnter#5) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| count |= 0x40; |
| err = (*jvmti)->RawMonitorWait(jvmti, cpu_lock, WAIT_TIME); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(RawMonitorWait#5) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| count |= 0x80; |
| err = (*jvmti)->RawMonitorExit(jvmti, cpu_lock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(RawMonitorExit#5) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } |
| |
| void JNICALL VMInit(jvmtiEnv *jvmti_env, JNIEnv *env, jthread thr) { |
| jvmtiError err; |
| |
| if (printdump == JNI_TRUE) { |
| printf(">>> VMInit: enabling ThreadStart\n"); |
| } |
| |
| err = (*jvmti_env)->SetEventNotificationMode(jvmti_env, JVMTI_ENABLE, |
| JVMTI_EVENT_THREAD_START, NULL); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Failed to enable JVMTI_EVENT_THREAD_START: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } |
| |
| void JNICALL |
| ThreadStart(jvmtiEnv *jvmti_env, JNIEnv *env, jthread thread) { |
| jvmtiError err; |
| jvmtiThreadInfo thrInfo; |
| |
| eventsCount++; |
| err = (*jvmti_env)->GetThreadInfo(jvmti_env, thread, &thrInfo); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetThreadInfo#%d) unexpected error: %s (%d)\n", |
| eventsCount, TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| if (printdump == JNI_TRUE) { |
| printf(">>> ThreadStart: %s\n", thrInfo.name); |
| } |
| /* workaround to avoid bug: |
| * 4334503 THREAD_START event is still sent twice for user-defined thread */ |
| if (strcmp(thrInfo.name, "thr1") == 0 && !thr1_was_started) { |
| thr1_was_started = 1; |
| err = (*jvmti_env)->RunAgentThread(jvmti_env, jthr((JNIEnv *)env), |
| sys_thread_1, NULL, JVMTI_THREAD_MAX_PRIORITY); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(RunAgentThread#1) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| err = (*jvmti_env)->RunAgentThread(jvmti_env, jthr((JNIEnv *)env), |
| sys_thread_2, NULL, JVMTI_THREAD_NORM_PRIORITY); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(RunAgentThread#2) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| err = (*jvmti_env)->RunAgentThread(jvmti_env, jthr((JNIEnv *)env), |
| sys_thread_3, NULL, JVMTI_THREAD_MIN_PRIORITY); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(RunAgentThread#3) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } |
| } |
| |
| #ifdef STATIC_BUILD |
| JNIEXPORT jint JNICALL Agent_OnLoad_agentthr001(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNICALL Agent_OnAttach_agentthr001(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNI_OnLoad_agentthr001(JavaVM *jvm, char *options, void *reserved) { |
| return JNI_VERSION_1_8; |
| } |
| #endif |
| jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) { |
| jvmtiError err; |
| jint res; |
| |
| if (options != NULL && strcmp(options, "printdump") == 0) { |
| printdump = JNI_TRUE; |
| } |
| |
| res = JNI_ENV_PTR(jvm)->GetEnv(JNI_ENV_ARG(jvm, (void **) &jvmti), |
| JVMTI_VERSION_1_1); |
| if (res != JNI_OK || jvmti == NULL) { |
| printf("Wrong result of a valid call to GetEnv!\n"); |
| return JNI_ERR; |
| } |
| |
| err = (*jvmti)->CreateRawMonitor(jvmti, "_CPU lock", &cpu_lock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(CreateRawMonitor) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| return JNI_ERR; |
| } |
| |
| callbacks.VMInit = &VMInit; |
| callbacks.ThreadStart = &ThreadStart; |
| err = (*jvmti)->SetEventCallbacks(jvmti, &callbacks, sizeof(callbacks)); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(SetEventCallbacks) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| return JNI_ERR; |
| } |
| |
| err = (*jvmti)->SetEventNotificationMode(jvmti, JVMTI_ENABLE, |
| JVMTI_EVENT_VM_INIT, NULL); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Failed to enable JVMTI_EVENT_VM_INIT: %s (%d)\n", |
| TranslateError(err), err); |
| return JNI_ERR; |
| } |
| |
| return JNI_OK; |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_nsk_jvmti_RunAgentThread_agentthr001_startSysThr(JNIEnv *env, jclass cls) { |
| jvmtiError err; |
| |
| err = (*jvmti)->RunAgentThread(jvmti, jthr(env), sys_thread_5, NULL, |
| JVMTI_THREAD_MAX_PRIORITY); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(RunAgentThread#5) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } |
| |
| JNIEXPORT jboolean JNICALL |
| Java_nsk_jvmti_RunAgentThread_agentthr001_isOver(JNIEnv *env, jclass cls) { |
| return (count == 0xFF ? JNI_TRUE : JNI_FALSE); |
| } |
| |
| JNIEXPORT jint JNICALL |
| Java_nsk_jvmti_RunAgentThread_agentthr001_getRes(JNIEnv *env, jclass cls) { |
| jvmtiError err; |
| |
| if (printdump == JNI_TRUE) { |
| printf(">>> getRes: disabling ThreadStart\n"); |
| } |
| |
| err = (*jvmti)->SetEventNotificationMode(jvmti, JVMTI_DISABLE, |
| JVMTI_EVENT_THREAD_START, NULL); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Failed to disable JVMTI_EVENT_THREAD_START: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| if (count != 0xFF) { |
| printf("Some of the threads have not started (0x%x) !\n", count); |
| result = STATUS_FAILED; |
| } |
| |
| if (printdump == JNI_TRUE) { |
| printf(">>> total of thread start events: %d\n", eventsCount); |
| } |
| |
| return result; |
| } |
| |
| #ifdef __cplusplus |
| } |
| #endif |
