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 VMObjectAllocEventsCount = 0; 42 43 /* ========================================================================== */ 44 45 /** callback functions **/ 46 47 static void JNICALL 48 VMObjectAlloc(jvmtiEnv *jvmti_env, JNIEnv* jni_env, 49 jthread thread, jobject object, 50 jclass object_klass, jlong size) { 51 char *signature; 52 53 VMObjectAllocEventsCount++; 54 55 if (!NSK_JVMTI_VERIFY(jvmti_env->GetClassSignature(object_klass, &signature, NULL))) { 56 nsk_jvmti_setFailStatus(); 57 return; 58 } 59 NSK_DISPLAY2("VMObjectAlloc: \"%s\", size=%d\n", signature, size); 60 if (signature != NULL) 61 jvmti_env->Deallocate((unsigned char*)signature); 62 } 63 64 /* ========================================================================== */ 65 66 /** Agent algorithm. */ 67 static void JNICALL 68 agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) { 69 70 if (!nsk_jvmti_waitForSync(timeout)) 71 return; 72 73 NSK_DISPLAY1("VMObjectAlloc events received: %d\n", 74 VMObjectAllocEventsCount); 75 if (!NSK_VERIFY(VMObjectAllocEventsCount != 0)) 76 nsk_jvmti_setFailStatus(); 77 78 if (!nsk_jvmti_resumeSync()) 79 return; 80 } 81 82 /* ========================================================================== */ 83 84 /** Agent library initialization. */ 85 #ifdef STATIC_BUILD 86 JNIEXPORT jint JNICALL Agent_OnLoad_ma10t005(JavaVM *jvm, char *options, void *reserved) { 87 return Agent_Initialize(jvm, options, reserved); 88 } 89 JNIEXPORT jint JNICALL Agent_OnAttach_ma10t005(JavaVM *jvm, char *options, void *reserved) { 90 return Agent_Initialize(jvm, options, reserved); 91 } 92 JNIEXPORT jint JNI_OnLoad_ma10t005(JavaVM *jvm, char *options, void *reserved) { 93 return JNI_VERSION_1_8; 94 } 95 #endif 96 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) { 97 jvmtiEnv* jvmti = NULL; 98 jvmtiCapabilities caps; 99 jvmtiEventCallbacks callbacks; 100 101 NSK_DISPLAY0("Agent_OnLoad\n"); 102 103 if (!NSK_VERIFY(nsk_jvmti_parseOptions(options))) 104 return JNI_ERR; 105 106 timeout = nsk_jvmti_getWaitTime() * 60 * 1000; 107 108 if (!NSK_VERIFY((jvmti = 109 nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL)) 110 return JNI_ERR; 111 112 if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL))) 113 return JNI_ERR; 114 115 memset(&caps, 0, sizeof(caps)); 116 caps.can_generate_vm_object_alloc_events = 1; 117 if (!NSK_JVMTI_VERIFY(jvmti->AddCapabilities(&caps))) { 118 return JNI_ERR; 119 } 120 121 memset(&callbacks, 0, sizeof(callbacks)); 122 callbacks.VMObjectAlloc = &VMObjectAlloc; 123 if (!NSK_VERIFY(nsk_jvmti_init_MA(&callbacks))) 124 return JNI_ERR; 125 126 if (!NSK_JVMTI_VERIFY(jvmti->SetEventNotificationMode(JVMTI_ENABLE, JVMTI_EVENT_VM_OBJECT_ALLOC, NULL))) 127 return JNI_ERR; 128 129 return JNI_OK; 130 } 131 132 /* ========================================================================== */ 133 134 }