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 /* test objects */
41 static jthread thread = NULL;
42
43 /* event counts */
44 static int MethodExitEventsCount = 0;
45
46 /* ========================================================================== */
47
48 /** callback functions **/
49
50 static void JNICALL
51 MethodExit(jvmtiEnv *jvmti_env, JNIEnv *jni_env,
52 jthread thread, jmethodID method,
53 jboolean was_poped_by_exception, jvalue return_value) {
54 char *name = NULL;
55 char *signature = NULL;
56
57 MethodExitEventsCount++;
58 if (!NSK_JVMTI_VERIFY(jvmti_env->GetMethodName(method, &name, &signature, NULL))) {
59 nsk_jvmti_setFailStatus();
60 return;
61 }
62 NSK_DISPLAY2("MethodExit event: %s%s\n", name, signature);
63 if (name != NULL)
64 jvmti_env->Deallocate((unsigned char*)name);
65 if (signature != NULL)
66 jvmti_env->Deallocate((unsigned char*)signature);
67 }
68
69 /* ========================================================================== */
70
71 static int prepare(jvmtiEnv* jvmti, JNIEnv* jni) {
72 const char* THREAD_NAME = "Debuggee Thread";
73 jvmtiThreadInfo info;
74 jthread *threads = NULL;
75 jint threads_count = 0;
76 int i;
77
78 NSK_DISPLAY0("Prepare: find tested thread\n");
79
80 /* get all live threads */
81 if (!NSK_JVMTI_VERIFY(jvmti->GetAllThreads(&threads_count, &threads)))
82 return NSK_FALSE;
83
84 if (!NSK_VERIFY(threads_count > 0 && threads != NULL))
85 return NSK_FALSE;
86
87 /* find tested thread */
88 for (i = 0; i < threads_count; i++) {
89 if (!NSK_VERIFY(threads[i] != NULL))
90 return NSK_FALSE;
91
92 /* get thread information */
93 if (!NSK_JVMTI_VERIFY(jvmti->GetThreadInfo(threads[i], &info)))
94 return NSK_FALSE;
95
96 NSK_DISPLAY3(" thread #%d (%s): %p\n", i, info.name, threads[i]);
97
98 /* find by name */
99 if (info.name != NULL && (strcmp(info.name, THREAD_NAME) == 0)) {
100 thread = threads[i];
101 }
102 }
103
104 if (!NSK_JNI_VERIFY(jni, (thread = jni->NewGlobalRef(thread)) != NULL))
105 return NSK_FALSE;
106
107 /* deallocate threads list */
108 if (!NSK_JVMTI_VERIFY(jvmti->Deallocate((unsigned char*)threads)))
109 return NSK_FALSE;
110
111 return NSK_TRUE;
112 }
113
114 /* ========================================================================== */
115
116 /** Agent algorithm. */
117 static void JNICALL
118 agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) {
119
120 if (!nsk_jvmti_waitForSync(timeout))
121 return;
122
123 if (!prepare(jvmti, jni)) {
124 nsk_jvmti_setFailStatus();
125 return;
126 }
127
128 if (!NSK_JVMTI_VERIFY(jvmti->SetEventNotificationMode(JVMTI_ENABLE, JVMTI_EVENT_METHOD_EXIT, thread)))
129 nsk_jvmti_setFailStatus();
130
131 /* resume debugee and wait for sync */
132 if (!nsk_jvmti_resumeSync())
133 return;
134 if (!nsk_jvmti_waitForSync(timeout))
135 return;
136
137 NSK_DISPLAY1("MethodExit events received: %d\n",
138 MethodExitEventsCount);
139 if (!NSK_VERIFY(MethodExitEventsCount != 0))
140 nsk_jvmti_setFailStatus();
141
142 NSK_TRACE(jni->DeleteGlobalRef(thread));
143
144 if (!nsk_jvmti_resumeSync())
145 return;
146 }
147
148 /* ========================================================================== */
149
150 /** Agent library initialization. */
151 #ifdef STATIC_BUILD
152 JNIEXPORT jint JNICALL Agent_OnLoad_ma10t003(JavaVM *jvm, char *options, void *reserved) {
153 return Agent_Initialize(jvm, options, reserved);
154 }
155 JNIEXPORT jint JNICALL Agent_OnAttach_ma10t003(JavaVM *jvm, char *options, void *reserved) {
156 return Agent_Initialize(jvm, options, reserved);
157 }
158 JNIEXPORT jint JNI_OnLoad_ma10t003(JavaVM *jvm, char *options, void *reserved) {
159 return JNI_VERSION_1_8;
160 }
161 #endif
162 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
163 jvmtiEnv* jvmti = NULL;
164 jvmtiCapabilities caps;
165 jvmtiEventCallbacks callbacks;
166
167 NSK_DISPLAY0("Agent_OnLoad\n");
168
169 if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))
170 return JNI_ERR;
171
172 timeout = nsk_jvmti_getWaitTime() * 60 * 1000;
173
174 if (!NSK_VERIFY((jvmti =
175 nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL))
176 return JNI_ERR;
177
178 if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL)))
179 return JNI_ERR;
180
181 memset(&caps, 0, sizeof(caps));
182 caps.can_generate_method_exit_events = 1;
183 if (!NSK_JVMTI_VERIFY(jvmti->AddCapabilities(&caps))) {
184 return JNI_ERR;
185 }
186
187 memset(&callbacks, 0, sizeof(callbacks));
188 callbacks.MethodExit = &MethodExit;
189 if (!NSK_VERIFY(nsk_jvmti_init_MA(&callbacks)))
190 return JNI_ERR;
191
192 return JNI_OK;
193 }
194
195 /* ========================================================================== */
196
197 }