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 GarbageCollectionStartEventsCount = 0; 42 static int GarbageCollectionFinishEventsCount = 0; 43 44 /* ========================================================================== */ 45 46 /** callback functions **/ 47 48 static void JNICALL 49 GarbageCollectionStart(jvmtiEnv *jvmti_env) { 50 GarbageCollectionStartEventsCount++; 51 NSK_DISPLAY0("GarbageCollectionStart\n"); 52 } 53 54 static void JNICALL 55 GarbageCollectionFinish(jvmtiEnv *jvmti_env) { 56 GarbageCollectionFinishEventsCount++; 57 NSK_DISPLAY0("GarbageCollectionFinish\n"); 58 } 59 60 /* ========================================================================== */ 61 62 /** Agent algorithm. */ 63 static void JNICALL 64 agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) { 65 66 if (!nsk_jvmti_waitForSync(timeout)) 67 return; 68 69 NSK_DISPLAY1("GarbageCollectionStart events received: %d\n", 70 GarbageCollectionStartEventsCount); 71 if (!NSK_VERIFY(GarbageCollectionStartEventsCount != 0)) 72 nsk_jvmti_setFailStatus(); 73 74 NSK_DISPLAY1("GarbageCollectionFinish events received: %d\n", 75 GarbageCollectionFinishEventsCount); 76 if (!NSK_VERIFY(GarbageCollectionFinishEventsCount != 0)) 77 nsk_jvmti_setFailStatus(); 78 79 if (!nsk_jvmti_resumeSync()) 80 return; 81 } 82 83 /* ========================================================================== */ 84 85 /** Agent library initialization. */ 86 #ifdef STATIC_BUILD 87 JNIEXPORT jint JNICALL Agent_OnLoad_ma10t007(JavaVM *jvm, char *options, void *reserved) { 88 return Agent_Initialize(jvm, options, reserved); 89 } 90 JNIEXPORT jint JNICALL Agent_OnAttach_ma10t007(JavaVM *jvm, char *options, void *reserved) { 91 return Agent_Initialize(jvm, options, reserved); 92 } 93 JNIEXPORT jint JNI_OnLoad_ma10t007(JavaVM *jvm, char *options, void *reserved) { 94 return JNI_VERSION_1_8; 95 } 96 #endif 97 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) { 98 jvmtiEnv* jvmti = NULL; 99 jvmtiCapabilities caps; 100 jvmtiEventCallbacks callbacks; 101 102 NSK_DISPLAY0("Agent_OnLoad\n"); 103 104 if (!NSK_VERIFY(nsk_jvmti_parseOptions(options))) 105 return JNI_ERR; 106 107 timeout = nsk_jvmti_getWaitTime() * 60 * 1000; 108 109 if (!NSK_VERIFY((jvmti = 110 nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL)) 111 return JNI_ERR; 112 113 if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL))) 114 return JNI_ERR; 115 116 memset(&caps, 0, sizeof(caps)); 117 caps.can_generate_garbage_collection_events = 1; 118 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(AddCapabilities, jvmti, &caps))) { 119 return JNI_ERR; 120 } 121 122 memset(&callbacks, 0, sizeof(callbacks)); 123 callbacks.GarbageCollectionStart = &GarbageCollectionStart; 124 callbacks.GarbageCollectionFinish = &GarbageCollectionFinish; 125 if (!NSK_VERIFY(nsk_jvmti_init_MA(&callbacks))) 126 return JNI_ERR; 127 128 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode, 129 jvmti, JVMTI_ENABLE, JVMTI_EVENT_GARBAGE_COLLECTION_START, NULL))) 130 return JNI_ERR; 131 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode, 132 jvmti, JVMTI_ENABLE, JVMTI_EVENT_GARBAGE_COLLECTION_FINISH, NULL))) 133 return JNI_ERR; 134 135 return JNI_OK; 136 } 137 138 /* ========================================================================== */ 139 140 }