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(NSK_CPP_STUB5(GetMethodName, 55 jvmti_env, method, &name, &signature, NULL))) { 56 nsk_jvmti_setFailStatus(); 57 return; 58 } 59 NSK_DISPLAY2("MethodEntry event: %s%s\n", name, signature); 60 if (name != NULL) 61 NSK_CPP_STUB2(Deallocate, jvmti_env, (unsigned char*)name); 62 if (signature != NULL) 63 NSK_CPP_STUB2(Deallocate, jvmti_env, (unsigned char*)signature); 64 } 65 66 /* ========================================================================== */ 67 68 /** Agent algorithm. */ 69 static void JNICALL 70 agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) { 71 72 if (!nsk_jvmti_waitForSync(timeout)) 73 return; 74 75 /* resume debugee and wait for sync */ 76 if (!nsk_jvmti_resumeSync()) 77 return; 78 if (!nsk_jvmti_waitForSync(timeout)) 79 return; 80 81 NSK_DISPLAY1("MethodEntry events received: %d\n", 82 MethodEntryEventsCount); 83 if (!NSK_VERIFY(MethodEntryEventsCount == 0)) 84 nsk_jvmti_setFailStatus(); 85 86 if (!nsk_jvmti_resumeSync()) 87 return; 88 } 89 90 /* ========================================================================== */ 91 92 /** Agent library initialization. */ 93 #ifdef STATIC_BUILD 94 JNIEXPORT jint JNICALL Agent_OnLoad_ma10t002a(JavaVM *jvm, char *options, void *reserved) { 95 return Agent_Initialize(jvm, options, reserved); 96 } 97 JNIEXPORT jint JNICALL Agent_OnAttach_ma10t002a(JavaVM *jvm, char *options, void *reserved) { 98 return Agent_Initialize(jvm, options, reserved); 99 } 100 JNIEXPORT jint JNI_OnLoad_ma10t002a(JavaVM *jvm, char *options, void *reserved) { 101 return JNI_VERSION_1_8; 102 } 103 #endif 104 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) { 105 jvmtiEnv* jvmti = NULL; 106 jvmtiCapabilities caps; 107 jvmtiEventCallbacks callbacks; 108 109 NSK_DISPLAY0("Agent_OnLoad\n"); 110 111 if (!NSK_VERIFY(nsk_jvmti_parseOptions(options))) 112 return JNI_ERR; 113 114 timeout = nsk_jvmti_getWaitTime() * 60 * 1000; 115 116 if (!NSK_VERIFY((jvmti = 117 nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL)) 118 return JNI_ERR; 119 120 if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL))) 121 return JNI_ERR; 122 123 memset(&caps, 0, sizeof(caps)); 124 caps.can_generate_method_entry_events = 1; 125 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(AddCapabilities, jvmti, &caps))) { 126 return JNI_ERR; 127 } 128 129 memset(&callbacks, 0, sizeof(callbacks)); 130 callbacks.MethodEntry = &MethodEntry; 131 if (!NSK_VERIFY(nsk_jvmti_init_MA(&callbacks))) 132 return JNI_ERR; 133 134 return JNI_OK; 135 } 136 137 /* ========================================================================== */ 138 139 }