1 /* 2 * Copyright (c) 2004, 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 #include <stdlib.h> 25 #include <string.h> 26 #include "jni_tools.h" 27 #include "agent_common.h" 28 #include "jvmti_tools.h" 29 30 #define PASSED 0 31 #define STATUS_FAILED 2 32 33 extern "C" { 34 35 /* ========================================================================== */ 36 37 /* scaffold objects */ 38 static jlong timeout = 0; 39 40 /* event counts */ 41 static int MonitorContendedEnterEventsCount = 0; 42 static int MonitorContendedEnteredEventsCount = 0; 43 static int MonitorWaitEventsCount = 0; 44 static int MonitorWaitedEventsCount = 0; 45 46 /* ========================================================================== */ 47 48 /** callback functions **/ 49 50 static void JNICALL 51 MonitorContendedEnter(jvmtiEnv *jvmti_env, JNIEnv* jni_env, 52 jthread thread, jobject object) { 53 jvmtiThreadInfo info; 54 55 MonitorContendedEnterEventsCount++; 56 57 /* get thread information */ 58 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(GetThreadInfo, jvmti_env, 59 thread, &info))) { 60 nsk_jvmti_setFailStatus(); 61 return; 62 } 63 NSK_DISPLAY2("MonitorContendedEnter event: thread=\"%s\", object=0x%p\n", 64 info.name, object); 65 } 66 67 static void JNICALL 68 MonitorContendedEntered(jvmtiEnv *jvmti_env, JNIEnv* jni_env, 69 jthread thread, jobject object) { 70 jvmtiThreadInfo info; 71 72 MonitorContendedEnteredEventsCount++; 73 74 /* get thread information */ 75 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(GetThreadInfo, jvmti_env, 76 thread, &info))) { 77 nsk_jvmti_setFailStatus(); 78 return; 79 } 80 NSK_DISPLAY2("MonitorContendedEntered event: thread=\"%s\", object=0x%p\n", 81 info.name, object); 82 } 83 84 static void JNICALL 85 MonitorWait(jvmtiEnv *jvmti_env, JNIEnv* jni_env, 86 jthread thread, jobject object, jlong timeout) { 87 jvmtiThreadInfo info; 88 89 MonitorWaitEventsCount++; 90 91 /* get thread information */ 92 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(GetThreadInfo, jvmti_env, 93 thread, &info))) { 94 nsk_jvmti_setFailStatus(); 95 return; 96 } 97 NSK_DISPLAY2("MonitorWait event: thread=\"%s\", object=0x%p\n", 98 info.name, object); 99 } 100 101 static void JNICALL 102 MonitorWaited(jvmtiEnv *jvmti_env, JNIEnv* jni_env, 103 jthread thread, jobject object, jboolean timed_out) { 104 jvmtiThreadInfo info; 105 106 MonitorWaitedEventsCount++; 107 108 /* get thread information */ 109 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB3(GetThreadInfo, jvmti_env, 110 thread, &info))) { 111 nsk_jvmti_setFailStatus(); 112 return; 113 } 114 NSK_DISPLAY2("MonitorWaited event: thread=\"%s\", object=0x%p\n", 115 info.name, object); 116 } 117 118 /* ========================================================================== */ 119 120 /** Agent algorithm. */ 121 static void JNICALL 122 agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) { 123 124 if (!nsk_jvmti_waitForSync(timeout)) 125 return; 126 127 /* resume debugee and wait for sync */ 128 if (!nsk_jvmti_resumeSync()) 129 return; 130 if (!nsk_jvmti_waitForSync(timeout)) 131 return; 132 133 NSK_DISPLAY1("MonitorContendedEnter events received: %d\n", 134 MonitorContendedEnterEventsCount); 135 if (!NSK_VERIFY(MonitorContendedEnterEventsCount == 0)) 136 nsk_jvmti_setFailStatus(); 137 138 NSK_DISPLAY1("MonitorContendedEntered events received: %d\n", 139 MonitorContendedEnteredEventsCount); 140 if (!NSK_VERIFY(MonitorContendedEnteredEventsCount == 0)) 141 nsk_jvmti_setFailStatus(); 142 143 NSK_DISPLAY1("MonitorWait events received: %d\n", 144 MonitorWaitEventsCount); 145 if (!NSK_VERIFY(MonitorWaitEventsCount == 0)) 146 nsk_jvmti_setFailStatus(); 147 148 NSK_DISPLAY1("MonitorWaited events received: %d\n", 149 MonitorWaitedEventsCount); 150 if (!NSK_VERIFY(MonitorWaitedEventsCount == 0)) 151 nsk_jvmti_setFailStatus(); 152 153 if (!nsk_jvmti_resumeSync()) 154 return; 155 } 156 157 /* ========================================================================== */ 158 159 /** Agent library initialization. */ 160 #ifdef STATIC_BUILD 161 JNIEXPORT jint JNICALL Agent_OnLoad_ma10t008a(JavaVM *jvm, char *options, void *reserved) { 162 return Agent_Initialize(jvm, options, reserved); 163 } 164 JNIEXPORT jint JNICALL Agent_OnAttach_ma10t008a(JavaVM *jvm, char *options, void *reserved) { 165 return Agent_Initialize(jvm, options, reserved); 166 } 167 JNIEXPORT jint JNI_OnLoad_ma10t008a(JavaVM *jvm, char *options, void *reserved) { 168 return JNI_VERSION_1_8; 169 } 170 #endif 171 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) { 172 jvmtiEnv* jvmti = NULL; 173 jvmtiCapabilities caps; 174 jvmtiEventCallbacks callbacks; 175 176 NSK_DISPLAY0("Agent_OnLoad\n"); 177 178 if (!NSK_VERIFY(nsk_jvmti_parseOptions(options))) 179 return JNI_ERR; 180 181 timeout = nsk_jvmti_getWaitTime() * 60 * 1000; 182 183 if (!NSK_VERIFY((jvmti = 184 nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL)) 185 return JNI_ERR; 186 187 if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL))) 188 return JNI_ERR; 189 190 memset(&caps, 0, sizeof(caps)); 191 caps.can_generate_monitor_events = 1; 192 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(AddCapabilities, jvmti, &caps))) { 193 return JNI_ERR; 194 } 195 196 memset(&callbacks, 0, sizeof(callbacks)); 197 callbacks.MonitorContendedEnter = &MonitorContendedEnter; 198 callbacks.MonitorContendedEntered = &MonitorContendedEntered; 199 callbacks.MonitorWait = &MonitorWait; 200 callbacks.MonitorWaited = &MonitorWaited; 201 if (!NSK_VERIFY(nsk_jvmti_init_MA(&callbacks))) 202 return JNI_ERR; 203 204 return JNI_OK; 205 } 206 207 /* ========================================================================== */ 208 209 }