| /* |
| * 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 MILLIS_PER_MINUTE (60 * 1000) |
| |
| static jvmtiEnv *jvmti = NULL; |
| static jvmtiCapabilities caps; |
| static jint result = PASSED; |
| static jboolean printdump = JNI_FALSE; |
| static jrawMonitorID monitor; |
| static jrawMonitorID wait_lock; |
| static jlong wait_time; |
| |
| #ifdef STATIC_BUILD |
| JNIEXPORT jint JNICALL Agent_OnLoad_rawmnwait005(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNICALL Agent_OnAttach_rawmnwait005(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNI_OnLoad_rawmnwait005(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; |
| } |
| |
| if (!caps.can_signal_thread) { |
| printf("Warning: InterruptThread is not implemented\n"); |
| } |
| |
| return JNI_OK; |
| } |
| |
| static void JNICALL |
| test_thread(jvmtiEnv* jvmti, JNIEnv* jni, void *unused) { |
| jvmtiError err; |
| const char* const thread_name = "test thread"; |
| |
| err = (*jvmti)->RawMonitorEnter(jvmti, monitor); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(RawMonitorEnter#test) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| if (printdump == JNI_TRUE) { |
| printf(">>> [%s] acquired lock for 'monitor' ...\n", thread_name); |
| } |
| |
| err = (*jvmti)->RawMonitorEnter(jvmti, wait_lock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(RawMonitorEnter#wait) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| return; |
| } |
| |
| if (printdump == JNI_TRUE) { |
| printf(">>> [%s] acquired lock for 'wait_lock' ...\n", thread_name); |
| printf(">>> [%s] notifying main thread (wait_lock.notify) ...\n", thread_name); |
| } |
| |
| err = (*jvmti)->RawMonitorNotify(jvmti, wait_lock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(RawMonitorWait#wait) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| return; |
| } |
| err = (*jvmti)->RawMonitorExit(jvmti, wait_lock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(RawMonitorExit#wait) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| return; |
| } |
| |
| if (printdump == JNI_TRUE) { |
| printf(">>> [%s] waiting for interrupt ...\n", thread_name); |
| } |
| |
| err = (*jvmti)->RawMonitorWait(jvmti, monitor, wait_time); |
| if (err != JVMTI_ERROR_INTERRUPT) { |
| printf("Error expected: JVMTI_ERROR_INTERRUPT,\n"); |
| printf("\tactual: %s (%d)\n", TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| err = (*jvmti)->RawMonitorExit(jvmti, monitor); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(RawMonitorExit#test) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| if (printdump == JNI_TRUE) { |
| printf(">>> [%s] all done\n", thread_name); |
| } |
| } |
| |
| JNIEXPORT jint JNICALL |
| Java_nsk_jvmti_RawMonitorWait_rawmnwait005_check(JNIEnv *env, |
| jclass cls, jthread thr, jint wtime) { |
| jvmtiError err; |
| const char* const thread_name = "main thread"; |
| |
| if (!caps.can_signal_thread) { |
| return result; |
| } |
| |
| wait_time = wtime * MILLIS_PER_MINUTE; |
| |
| if (jvmti == NULL) { |
| printf("JVMTI client was not properly loaded!\n"); |
| return STATUS_FAILED; |
| } |
| |
| err = (*jvmti)->CreateRawMonitor(jvmti, "test monitor", &monitor); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(CreateRawMonitor#test) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| return STATUS_FAILED; |
| } |
| |
| // 'wait_lock' is used to notify current thread when child thread ('test_thread') |
| // is ready. This in particular means 'test_thread' is waiting for notification |
| // of the raw monitor 'monitor' and current thread can now interrupt 'test_thread'. |
| // |
| err = (*jvmti)->CreateRawMonitor(jvmti, "wait lock", &wait_lock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(CreateRawMonitor#wait) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| return STATUS_FAILED; |
| } |
| |
| // get exclusive ownership of 'wait_lock' monitor before |
| // starting 'test_thread' to avoid following race condition: |
| // 'test_thread' | current thread |
| // ------------------------------------- |
| // | RunAgentThread(..., test_thread, ...) |
| // wait_lock.enter | |
| // wait_lock.notify | |
| // | wait_lock.enter |
| // | wait_lock.wait(0) |
| // ... | |
| // | ... will wait forever ... |
| // |
| // See also 6399368 test bug. |
| // |
| err = (*jvmti)->RawMonitorEnter(jvmti, wait_lock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(RawMonitorEnter#wait) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| return STATUS_FAILED; |
| } |
| if (printdump == JNI_TRUE) { |
| printf(">>> [%s] acquired lock for 'wait_lock' ... \n", thread_name); |
| } |
| |
| if (printdump == JNI_TRUE) { |
| printf(">>> [%s] starting test thread ...\n", thread_name); |
| } |
| err = (*jvmti)->RunAgentThread(jvmti, thr, test_thread, NULL, |
| JVMTI_THREAD_NORM_PRIORITY); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(RunDebugThread) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| return STATUS_FAILED; |
| } |
| |
| if (printdump == JNI_TRUE) { |
| printf(">>> [%s] waiting for test thread to run (do wait_lock.wait)...\n", thread_name); |
| } |
| err = (*jvmti)->RawMonitorWait(jvmti, wait_lock, (jlong)0); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(RawMonitorWait#wait) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| return STATUS_FAILED; |
| } |
| if (printdump == JNI_TRUE) { |
| printf(">>> [%s] got notification from test thread ...\n", thread_name); |
| } |
| |
| err = (*jvmti)->RawMonitorExit(jvmti, wait_lock); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(RawMonitorExit#wait) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| return STATUS_FAILED; |
| } |
| |
| err = (*jvmti)->RawMonitorEnter(jvmti, monitor); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(RawMonitorEnter#test) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| return STATUS_FAILED; |
| } |
| if (printdump == JNI_TRUE) { |
| printf(">>> [%s] acquired lock for 'monitor' ... \n", thread_name); |
| } |
| |
| if (printdump == JNI_TRUE) { |
| printf(">>> [%s] interrupting test thread ...\n", thread_name); |
| } |
| |
| err = (*jvmti)->InterruptThread(jvmti, thr); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(InterruptThread) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| err = (*jvmti)->RawMonitorExit(jvmti, monitor); |
| if (err != JVMTI_ERROR_NONE) { |
| printf("(RawMonitorExit#test) unexpected error: %s (%d)\n", |
| TranslateError(err), err); |
| result = STATUS_FAILED; |
| } |
| |
| if (printdump == JNI_TRUE) { |
| printf(">>> [%s] all done\n", thread_name); |
| } |
| |
| return result; |
| } |
| |
| #ifdef __cplusplus |
| } |
| #endif |
