| /* |
| * Copyright (c) 2004, 2019, 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 <stdlib.h> |
| #include <string.h> |
| #include "jni_tools.h" |
| #include "agent_common.h" |
| #include "jvmti_tools.h" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /* ========================================================================== */ |
| |
| /* scaffold objects */ |
| static jlong timeout = 0; |
| |
| /* test objects */ |
| static jthread thread = NULL; |
| static jobject object_M = NULL; |
| /* line numbers of "synchronized (M)" clauses in java part of the test */ |
| static jint lines[] = { 48, 53, 58 }; |
| static volatile int enterEventsCount = 0; |
| static volatile int enteredEventsCount = 0; |
| |
| /* ========================================================================== */ |
| |
| static jint findLineNumber(jvmtiEnv *jvmti, jthread thread) { |
| jmethodID method = NULL; |
| jlocation location; |
| jvmtiLineNumberEntry* table = NULL; |
| jint count = 0; |
| jint line = 0; |
| int i; |
| |
| if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB5( |
| GetFrameLocation, jvmti, thread, 0, &method, &location))) |
| return 0; |
| |
| if (!NSK_VERIFY(method != NULL)) |
| return 0; |
| |
| if (!NSK_VERIFY(location != -1)) |
| return 0; |
| |
| if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4( |
| GetLineNumberTable, jvmti, method, &count, &table))) |
| return 0; |
| |
| if (!NSK_VERIFY(table != NULL)) |
| return 0; |
| |
| if (!NSK_VERIFY(count > 0)) |
| return 0; |
| |
| for (i = 0; i < count; i++) { |
| if (location < table[i].start_location) { |
| break; |
| } |
| } |
| |
| line = table[i-1].line_number; |
| |
| if (table != NULL) { |
| if (!NSK_JVMTI_VERIFY( |
| NSK_CPP_STUB2(Deallocate, jvmti, (unsigned char*)table))) |
| return 0; |
| } |
| |
| return line; |
| } |
| |
| /* ========================================================================== */ |
| |
| void JNICALL |
| MonitorContendedEnter(jvmtiEnv *jvmti, JNIEnv* jni, jthread thr, jobject obj) { |
| jint line = 0; |
| |
| if (!NSK_VERIFY(thr != NULL)) { |
| nsk_jvmti_setFailStatus(); |
| NSK_COMPLAIN1("MonitorContendedEnter event: thread=%p\n", thr); |
| return; |
| } |
| |
| if (!NSK_VERIFY(obj != NULL)) { |
| nsk_jvmti_setFailStatus(); |
| NSK_COMPLAIN1("MonitorContendedEnter event: object=%p\n", obj); |
| return; |
| } |
| |
| /* check if event is for tested thread and object */ |
| if (NSK_CPP_STUB3(IsSameObject, jni, thread, thr) && |
| NSK_CPP_STUB3(IsSameObject, jni, object_M, obj)) { |
| |
| if (!(line = findLineNumber(jvmti, thread))) { |
| nsk_jvmti_setFailStatus(); |
| NSK_COMPLAIN2("MonitorContendedEnter event: thread=%p, object=%p\n", |
| thr, obj); |
| return; |
| } |
| |
| NSK_DISPLAY3("MonitorContendedEnter event: thread=%p, object=%p, line=%d\n", |
| thr, obj, line); |
| |
| /* workaround of 4527285 bug: in -Xint mode GetFrameLocation |
| returns the location after the monitor enter. |
| */ |
| if (!NSK_VERIFY(line == lines[enterEventsCount] || |
| line == (lines[enterEventsCount] + 1))) { |
| nsk_jvmti_setFailStatus(); |
| NSK_COMPLAIN3("MonitorContendedEnter event: thread=%p, object=%p, line=%d\n", |
| thr, obj, line); |
| } |
| |
| enterEventsCount++; |
| } |
| } |
| |
| void JNICALL |
| MonitorContendedEntered(jvmtiEnv *jvmti, JNIEnv* jni, jthread thr, jobject obj) { |
| jint line = 0; |
| |
| if (!NSK_VERIFY(thr != NULL)) { |
| nsk_jvmti_setFailStatus(); |
| NSK_COMPLAIN1("MonitorContendedEntered event: thread=%p\n", thr); |
| return; |
| } |
| |
| if (!NSK_VERIFY(obj != NULL)) { |
| nsk_jvmti_setFailStatus(); |
| NSK_COMPLAIN1("MonitorContendedEntered event: object=%p\n", obj); |
| return; |
| } |
| |
| /* check if event is for tested thread and object */ |
| if (NSK_CPP_STUB3(IsSameObject, jni, thread, thr) && |
| NSK_CPP_STUB3(IsSameObject, jni, object_M, obj)) { |
| |
| if (!(line = findLineNumber(jvmti, thread))) { |
| nsk_jvmti_setFailStatus(); |
| NSK_COMPLAIN2("MonitorContendedEntered event: thread=%p, object=%p\n", |
| thr, obj); |
| return; |
| } |
| |
| NSK_DISPLAY3("MonitorContendedEntered event: thread=%p, object=%p, line=%d\n", |
| thr, obj, line); |
| |
| /* workaround of 4527285 bug: in -Xint mode GetFrameLocation |
| returns the location after the monitor enter. |
| */ |
| if (!NSK_VERIFY(line == lines[enteredEventsCount] || |
| line == (lines[enteredEventsCount] + 1))) { |
| nsk_jvmti_setFailStatus(); |
| NSK_COMPLAIN3("MonitorContendedEntered event: thread=%p, object=%p, line=%d\n", |
| thr, obj, line); |
| } |
| |
| enteredEventsCount++; |
| } |
| } |
| |
| /* ========================================================================== */ |
| |
| static int prepare(jvmtiEnv* jvmti, JNIEnv* jni) { |
| const char* THREAD_NAME = "Debuggee Thread"; |
| const char* FIELD_SIG = "Ljava/lang/Object;"; |
| jvmtiThreadInfo info; |
| jthread *threads = NULL; |
| jint threads_count = 0; |
| jfieldID field = NULL; |
| jclass klass = NULL; |
| int i; |
| |
| NSK_DISPLAY0("Prepare: find tested thread\n"); |
| |
| /* get all live threads */ |
| if (!NSK_JVMTI_VERIFY( |
| NSK_CPP_STUB3(GetAllThreads, jvmti, &threads_count, &threads))) |
| return NSK_FALSE; |
| |
| if (!NSK_VERIFY(threads_count > 0 && threads != NULL)) |
| return NSK_FALSE; |
| |
| /* find tested thread */ |
| for (i = 0; i < threads_count; i++) { |
| if (!NSK_VERIFY(threads[i] != NULL)) |
| return NSK_FALSE; |
| |
| /* get thread information */ |
| if (!NSK_JVMTI_VERIFY( |
| NSK_CPP_STUB3(GetThreadInfo, jvmti, threads[i], &info))) |
| return NSK_FALSE; |
| |
| NSK_DISPLAY3(" thread #%d (%s): %p\n", i, info.name, threads[i]); |
| |
| /* find by name */ |
| if (info.name != NULL && (strcmp(info.name, THREAD_NAME) == 0)) { |
| thread = threads[i]; |
| } |
| |
| if (info.name != NULL) { |
| if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2( |
| Deallocate, jvmti, (unsigned char*)info.name))) |
| return NSK_FALSE; |
| } |
| } |
| |
| /* deallocate threads list */ |
| if (!NSK_JVMTI_VERIFY( |
| NSK_CPP_STUB2(Deallocate, jvmti, (unsigned char*)threads))) |
| return NSK_FALSE; |
| |
| if (thread == NULL) { |
| NSK_COMPLAIN0("Debuggee thread not found"); |
| return NSK_FALSE; |
| } |
| |
| /* make thread accessable for a long time */ |
| if (!NSK_JNI_VERIFY(jni, (thread = |
| NSK_CPP_STUB2(NewGlobalRef, jni, thread)) != NULL)) |
| return NSK_FALSE; |
| |
| /* get tested thread class */ |
| if (!NSK_JNI_VERIFY(jni, (klass = |
| NSK_CPP_STUB2(GetObjectClass, jni, thread)) != NULL)) |
| return NSK_FALSE; |
| |
| /* get tested thread field 'M' */ |
| if (!NSK_JNI_VERIFY(jni, (field = |
| NSK_CPP_STUB4(GetFieldID, jni, klass, "M", FIELD_SIG)) != NULL)) |
| return NSK_FALSE; |
| |
| if (!NSK_JNI_VERIFY(jni, (object_M = |
| NSK_CPP_STUB3(GetObjectField, jni, thread, field)) != NULL)) |
| return NSK_FALSE; |
| |
| /* make object accessable for a long time */ |
| if (!NSK_JNI_VERIFY(jni, (object_M = |
| NSK_CPP_STUB2(NewGlobalRef, jni, object_M)) != NULL)) |
| return NSK_FALSE; |
| |
| /* enable MonitorContendedEntered event */ |
| if (!NSK_JVMTI_VERIFY( |
| NSK_CPP_STUB4(SetEventNotificationMode, jvmti, JVMTI_ENABLE, |
| JVMTI_EVENT_MONITOR_CONTENDED_ENTER, NULL))) |
| return NSK_FALSE; |
| |
| /* enable MonitorContendedEntered event */ |
| if (!NSK_JVMTI_VERIFY( |
| NSK_CPP_STUB4(SetEventNotificationMode, jvmti, JVMTI_ENABLE, |
| JVMTI_EVENT_MONITOR_CONTENDED_ENTERED, NULL))) |
| return NSK_FALSE; |
| |
| return NSK_TRUE; |
| } |
| |
| static int clean(jvmtiEnv* jvmti, JNIEnv* jni) { |
| |
| /* disable MonitorContendedEntered event */ |
| if (!NSK_JVMTI_VERIFY( |
| NSK_CPP_STUB4(SetEventNotificationMode, jvmti, JVMTI_DISABLE, |
| JVMTI_EVENT_MONITOR_CONTENDED_ENTERED, NULL))) |
| nsk_jvmti_setFailStatus(); |
| |
| return NSK_TRUE; |
| } |
| |
| /* ========================================================================== */ |
| |
| /* agent algorithm */ |
| static void JNICALL |
| agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) { |
| |
| /* wait for initial sync */ |
| if (!nsk_jvmti_waitForSync(timeout)) |
| return; |
| |
| if (!prepare(jvmti, jni)) { |
| nsk_jvmti_setFailStatus(); |
| return; |
| } |
| |
| /* resume debugee to catch MonitorContendedEntered events */ |
| if (!(NSK_VERIFY(nsk_jvmti_resumeSync()) && |
| NSK_VERIFY(nsk_jvmti_waitForSync(timeout)))) |
| return; |
| |
| NSK_DISPLAY1("Number of MonitorContendedEnter events: %d\n", |
| enterEventsCount); |
| |
| if (!(NSK_VERIFY(enterEventsCount == 3))) { |
| nsk_jvmti_setFailStatus(); |
| } |
| |
| NSK_DISPLAY1("Number of MonitorContendedEntered events: %d\n", |
| enteredEventsCount); |
| |
| if (!(NSK_VERIFY(enteredEventsCount == 3))) { |
| nsk_jvmti_setFailStatus(); |
| } |
| |
| if (!clean(jvmti, jni)) { |
| nsk_jvmti_setFailStatus(); |
| return; |
| } |
| |
| /* resume debugee after last sync */ |
| if (!nsk_jvmti_resumeSync()) |
| return; |
| } |
| |
| /* ========================================================================== */ |
| |
| /* agent library initialization */ |
| #ifdef STATIC_BUILD |
| JNIEXPORT jint JNICALL Agent_OnLoad_tc02t001(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNICALL Agent_OnAttach_tc02t001(JavaVM *jvm, char *options, void *reserved) { |
| return Agent_Initialize(jvm, options, reserved); |
| } |
| JNIEXPORT jint JNI_OnLoad_tc02t001(JavaVM *jvm, char *options, void *reserved) { |
| return JNI_VERSION_1_8; |
| } |
| #endif |
| jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) { |
| jvmtiEnv* jvmti = NULL; |
| jvmtiCapabilities caps; |
| jvmtiEventCallbacks callbacks; |
| |
| /* init framework and parse options */ |
| if (!NSK_VERIFY(nsk_jvmti_parseOptions(options))) |
| return JNI_ERR; |
| |
| timeout = nsk_jvmti_getWaitTime() * 60000; |
| NSK_DISPLAY1("Timeout: %d msc\n", (int)timeout); |
| |
| /* create JVMTI environment */ |
| if (!NSK_VERIFY((jvmti = |
| nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL)) |
| return JNI_ERR; |
| |
| /* add capabilities */ |
| memset(&caps, 0, sizeof(caps)); |
| caps.can_generate_monitor_events = 1; |
| caps.can_get_line_numbers = 1; |
| if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(AddCapabilities, jvmti, &caps))) |
| return JNI_ERR; |
| |
| memset(&callbacks, 0, sizeof(callbacks)); |
| callbacks.MonitorContendedEnter = &MonitorContendedEnter; |
| callbacks.MonitorContendedEntered = &MonitorContendedEntered; |
| if (!NSK_JVMTI_VERIFY( |
| NSK_CPP_STUB3(SetEventCallbacks, jvmti, |
| &callbacks, sizeof(callbacks)))) |
| return JNI_ERR; |
| |
| /* register agent proc and arg */ |
| if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL))) |
| return JNI_ERR; |
| |
| return JNI_OK; |
| } |
| |
| JNIEXPORT jint JNICALL |
| Java_nsk_jvmti_scenarios_contention_TC02_tc02t001_enterEventsCount(JNIEnv* jni, jclass klass) { |
| return enterEventsCount; |
| } |
| |
| /* ========================================================================== */ |
| |
| #ifdef __cplusplus |
| } |
| #endif |
