| /* |
| * Copyright (c) 2004, 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_START 100 |
| #define WAIT_TIME (2*60*1000) |
| |
| static jvmtiEnv *jvmti = NULL; |
| static jvmtiCapabilities caps; |
| static jvmtiEventCallbacks callbacks; |
| static jrawMonitorID access_lock; |
| static jint result = PASSED; |
| static jboolean printdump = JNI_FALSE; |
| static jthread thr_ptr = NULL; |
| static jint state[] = { |
| JVMTI_THREAD_STATE_RUNNABLE, |
| JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER, |
| JVMTI_THREAD_STATE_IN_OBJECT_WAIT |
| }; |
| |
| static int entry_count = 0; |
| static int entry_error_count = 0; |
| static int exit_count = 0; |
| static int exit_error_count = 0; |
| |
| void JNICALL VMInit(jvmtiEnv *jvmti_env, JNIEnv *env, jthread thr) { |
| jvmtiError err; |
| |
| err = (*jvmti_env)->SetEventNotificationMode(jvmti_env, JVMTI_ENABLE, |
| JVMTI_EVENT_THREAD_START, NULL); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Failed to enable THREAD_START event: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| if (caps.can_generate_method_entry_events) { |
| err = (*jvmti_env)->SetEventNotificationMode(jvmti_env, JVMTI_ENABLE, |
| JVMTI_EVENT_METHOD_ENTRY, NULL); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Failed to enable METHOD_ENTRY event: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } |
| |
| if (caps.can_generate_method_exit_events) { |
| err = (*jvmti_env)->SetEventNotificationMode(jvmti_env, JVMTI_ENABLE, |
| JVMTI_EVENT_METHOD_EXIT, NULL); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Failed to enable METHOD_EXIT event: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } |
| } |
| |
| void JNICALL |
| ThreadStart(jvmtiEnv *jvmti_env, JNIEnv *env, jthread thread) { |
| jvmtiError err; |
| jvmtiThreadInfo thrInfo; |
| |
| err = (*jvmti_env)->RawMonitorEnter(jvmti_env, access_lock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(RawMonitorEnter#TS) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| err = (*jvmti_env)->GetThreadInfo(jvmti_env, thread, &thrInfo); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetThreadInfo#TS) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| if (thrInfo.name != NULL && strcmp(thrInfo.name, "thr1") == 0) { |
| thr_ptr = JNI_ENV_PTR(env)->NewGlobalRef(JNI_ENV_ARG((JNIEnv *)env, thread)); |
| if (printdump == JNI_TRUE) { |
| printf(">>> ThreadStart: \"%s\", 0x%p\n", thrInfo.name, thr_ptr); |
| } |
| } |
| |
| err = (*jvmti_env)->RawMonitorExit(jvmti_env, access_lock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(RawMonitorExit#TS) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } |
| |
| void JNICALL MethodEntry(jvmtiEnv *jvmti_env, JNIEnv *env, |
| jthread thread, jmethodID mid) { |
| jvmtiError err; |
| jvmtiThreadInfo thrInfo; |
| jint thrState; |
| |
| err = (*jvmti_env)->RawMonitorEnter(jvmti_env, access_lock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(RawMonitorEnter#ME) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| entry_count++; |
| err = (*jvmti_env)->GetThreadState(jvmti_env, thread, &thrState); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetThreadState#ME) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| if ((thrState & JVMTI_THREAD_STATE_RUNNABLE) == 0) { |
| if (entry_error_count == 0) { |
| err = (*jvmti_env)->GetThreadInfo(jvmti_env, thread, &thrInfo); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetThreadInfo#ME) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| printf("Wrong thread \"%s\" state on MethodEntry event:\n", |
| thrInfo.name); |
| printf(" expected: JVMTI_THREAD_STATE_RUNNABLE\n"); |
| printf(" got: %s (%d)\n", |
| TranslateState(thrState), thrState); |
| } |
| entry_error_count++; |
| result = STATUS_FAILED; |
| } |
| |
| err = (*jvmti_env)->RawMonitorExit(jvmti_env, access_lock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(RawMonitorExit#ME) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| } |
| |
| void JNICALL MethodExit(jvmtiEnv *jvmti_env, JNIEnv *env, |
| jthread thread, jmethodID mid, |
| jboolean was_poped_by_exception, jvalue return_value) { |
| jvmtiError err; |
| jvmtiThreadInfo thrInfo; |
| jint thrState; |
| |
| err = (*jvmti_env)->RawMonitorEnter(jvmti_env, access_lock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(RawMonitorEnter#MX) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| exit_count++; |
| err = (*jvmti_env)->GetThreadState(jvmti_env, thread, &thrState); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetThreadState#MX) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| if ((thrState & JVMTI_THREAD_STATE_RUNNABLE) == 0) { |
| if (exit_error_count == 0) { |
| err = (*jvmti_env)->GetThreadInfo(jvmti_env, thread, &thrInfo); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetThreadInfo#MX) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| printf("Wrong thread \"%s\" state on MethodExit event:\n", |
| thrInfo.name); |
| printf(" expected: JVMTI_THREAD_STATE_RUNNABLE\n"); |
| printf(" got: %s (%d)\n", |
| TranslateState(thrState), thrState); |
| } |
| exit_error_count++; |
| result = STATUS_FAILED; |
| } |
| |
| err = (*jvmti_env)->RawMonitorExit(jvmti_env, access_lock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(RawMonitorExit#MX) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } |
| |
| #ifdef STATIC_BUILD |
| JNIEXPORT jint JNICALL Agent_OnLoad_thrstat001(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNICALL Agent_OnAttach_thrstat001(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNI_OnLoad_thrstat001(JavaVM *jvm, char *options, void *reserved) { |
| return JNI_VERSION_1_8; |
| } |
| #endif |
| jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) { |
| jint res; |
| jvmtiError err; |
| |
| 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)->GetPotentialCapabilities(jvmti, &caps); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetPotentialCapabilities) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| return JNI_ERR; |
| } |
| |
| err = (*jvmti)->AddCapabilities(jvmti, &caps); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(AddCapabilities) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| return JNI_ERR; |
| } |
| |
| err = (*jvmti)->GetCapabilities(jvmti, &caps); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetCapabilities) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| return JNI_ERR; |
| } |
| |
| err = (*jvmti)->CreateRawMonitor(jvmti, "_access_lock", &access_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; |
| if (caps.can_generate_method_entry_events) { |
| callbacks.MethodEntry = &MethodEntry; |
| } else { |
| printf("Warning: MethodEntry event is not implemented\n"); |
| } |
| if (caps.can_generate_method_exit_events) { |
| callbacks.MethodExit = &MethodExit; |
| } else { |
| printf("Warning: MethodExit event is not implemented\n"); |
| } |
| 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 VM_INIT event: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| return JNI_OK; |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_nsk_jvmti_GetThreadState_thrstat001_checkStatus(JNIEnv *env, |
| jclass cls, jint statInd) { |
| jvmtiError err; |
| jrawMonitorID wait_lock; |
| jint thrState; |
| jint millis; |
| |
| if (jvmti == NULL) { |
| printf("JVMTI client was not properly loaded!\n"); |
| result = STATUS_FAILED; |
| return; |
| } |
| |
| if (thr_ptr == NULL) { |
| printf("Missing thread \"thr1\" start event\n"); |
| result = STATUS_FAILED; |
| return; |
| } |
| |
| /* wait until thread gets an expected state */ |
| err = (*jvmti)->CreateRawMonitor(jvmti, "_wait_lock", &wait_lock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(CreateRawMonitor) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| for (millis = WAIT_START; millis < WAIT_TIME; millis <<= 1) { |
| err = (*jvmti)->GetThreadState(jvmti, thr_ptr, &thrState); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(GetThreadState#%d) unexpected error: %s (%d)\n", |
| statInd, TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| if ((thrState & state[statInd]) != 0) { |
| break; |
| } |
| err = (*jvmti)->RawMonitorEnter(jvmti, wait_lock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(RawMonitorEnter) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| err = (*jvmti)->RawMonitorWait(jvmti, wait_lock, (jlong)millis); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(RawMonitorWait) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| err = (*jvmti)->RawMonitorExit(jvmti, wait_lock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(RawMonitorExit) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } |
| err = (*jvmti)->DestroyRawMonitor(jvmti, wait_lock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(DestroyRawMonitor) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| if (printdump == JNI_TRUE) { |
| printf(">>> thread \"thr1\" (0x%p) state: %s (%d)\n", |
| thr_ptr, TranslateState(thrState), thrState); |
| } |
| |
| if ((thrState & state[statInd]) == 0) { |
| printf("Wrong thread \"thr1\" (0x%p) state:\n", thr_ptr); |
| printf(" expected: %s (%d)\n", |
| TranslateState(state[statInd]), state[statInd]); |
| printf(" actual: %s (%d)\n", |
| TranslateState(thrState), thrState); |
| result = STATUS_FAILED; |
| } |
| } |
| |
| JNIEXPORT jint JNICALL |
| Java_nsk_jvmti_GetThreadState_thrstat001_getRes(JNIEnv *env, jclass cls) { |
| jvmtiError err; |
| |
| err = (*jvmti)->SetEventNotificationMode(jvmti, JVMTI_DISABLE, |
| JVMTI_EVENT_THREAD_START, NULL); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Failed to disable THREAD_START event: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| if (caps.can_generate_method_entry_events) { |
| err = (*jvmti)->SetEventNotificationMode(jvmti, JVMTI_DISABLE, |
| JVMTI_EVENT_METHOD_ENTRY, NULL); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Failed to disable METHOD_ENTRY event: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } |
| |
| if (caps.can_generate_method_exit_events) { |
| err = (*jvmti)->SetEventNotificationMode(jvmti, JVMTI_DISABLE, |
| JVMTI_EVENT_METHOD_EXIT, NULL); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("Failed to disable METHOD_EXIT event: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| } |
| |
| if (printdump == JNI_TRUE) { |
| printf(">>> total number of method entry events = %d\n", entry_count); |
| printf(">>> total number of method exit events = %d\n", exit_count); |
| } |
| |
| if (entry_error_count != 0) { |
| printf("Total number of errors on METHOD_ENTRY: %d of %d events\n", |
| entry_error_count, entry_count); |
| } |
| |
| if (exit_error_count != 0) { |
| printf("Total number of errors on METHOD_EXIT: %d of %d events\n", |
| exit_error_count, exit_count); |
| } |
| |
| return result; |
| } |
| |
| #ifdef __cplusplus |
| } |
| #endif |
