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 MethodEntryEventsCount = 0; 42 43 /* ========================================================================== */ 44 45 /** callback functions **/ 46 47 static void JNICALL 48 MethodEntry(jvmtiEnv *jvmti_env, JNIEnv *jni_env, 49 jthread thread, jmethodID method) { 50 char *name = NULL; 51 char *signature = NULL; 52 53 MethodEntryEventsCount++; 54 if (!NSK_JVMTI_VERIFY(jvmti_env->GetMethodName(method, &name, &signature, NULL))) { 55 nsk_jvmti_setFailStatus(); 56 return; 57 } 58 NSK_DISPLAY2("MethodEntry event: %s%s\n", name, signature); 59 if (name != NULL) 60 jvmti_env->Deallocate((unsigned char*)name); 61 if (signature != NULL) 62 jvmti_env->Deallocate((unsigned char*)signature); 63 } 64 65 /* ========================================================================== */ 66 67 /** Agent algorithm. */ 68 static void JNICALL 69 agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) { 70 71 if (!nsk_jvmti_waitForSync(timeout)) 72 return; 73 74 /* resume debugee and wait for sync */ 75 if (!nsk_jvmti_resumeSync()) 76 return; 77 if (!nsk_jvmti_waitForSync(timeout)) 78 return; 79 80 NSK_DISPLAY1("MethodEntry events received: %d\n", 81 MethodEntryEventsCount); 82 if (!NSK_VERIFY(MethodEntryEventsCount == 0)) 83 nsk_jvmti_setFailStatus(); 84 85 if (!nsk_jvmti_resumeSync()) 86 return; 87 } 88 89 /* ========================================================================== */ 90 91 /** Agent library initialization. */ 92 #ifdef STATIC_BUILD 93 JNIEXPORT jint JNICALL Agent_OnLoad_ma10t002a(JavaVM *jvm, char *options, void *reserved) { 94 return Agent_Initialize(jvm, options, reserved); 95 } 96 JNIEXPORT jint JNICALL Agent_OnAttach_ma10t002a(JavaVM *jvm, char *options, void *reserved) { 97 return Agent_Initialize(jvm, options, reserved); 98 } 99 JNIEXPORT jint JNI_OnLoad_ma10t002a(JavaVM *jvm, char *options, void *reserved) { 100 return JNI_VERSION_1_8; 101 } 102 #endif 103 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) { 104 jvmtiEnv* jvmti = NULL; 105 jvmtiCapabilities caps; 106 jvmtiEventCallbacks callbacks; 107 108 NSK_DISPLAY0("Agent_OnLoad\n"); 109 110 if (!NSK_VERIFY(nsk_jvmti_parseOptions(options))) 111 return JNI_ERR; 112 113 timeout = nsk_jvmti_getWaitTime() * 60 * 1000; 114 115 if (!NSK_VERIFY((jvmti = 116 nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL)) 117 return JNI_ERR; 118 119 if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL))) 120 return JNI_ERR; 121 122 memset(&caps, 0, sizeof(caps)); 123 caps.can_generate_method_entry_events = 1; 124 if (!NSK_JVMTI_VERIFY(jvmti->AddCapabilities(&caps))) { 125 return JNI_ERR; 126 } 127 128 memset(&callbacks, 0, sizeof(callbacks)); 129 callbacks.MethodEntry = &MethodEntry; 130 if (!NSK_VERIFY(nsk_jvmti_init_MA(&callbacks))) 131 return JNI_ERR; 132 133 return JNI_OK; 134 } 135 136 /* ========================================================================== */ 137 138 }