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(NSK_CPP_STUB5(GetMethodName,
59 jvmti_env, method, &name, &signature, NULL))) {
60 nsk_jvmti_setFailStatus();
61 return;
62 }
63 NSK_DISPLAY2("MethodExit event: %s%s\n", name, signature);
64 if (name != NULL)
65 NSK_CPP_STUB2(Deallocate, jvmti_env, (unsigned char*)name);
66 if (signature != NULL)
67 NSK_CPP_STUB2(Deallocate, jvmti_env, (unsigned char*)signature);
68 }
69
70 /* ========================================================================== */
71
72 static int prepare(jvmtiEnv* jvmti, JNIEnv* jni) {
73 const char* THREAD_NAME = "Debuggee Thread";
74 jvmtiThreadInfo info;
75 jthread *threads = NULL;
76 jint threads_count = 0;
77 int i;
78
79 NSK_DISPLAY0("Prepare: find tested thread\n");
80
81 /* get all live threads */
82 if (!NSK_JVMTI_VERIFY(
83 NSK_CPP_STUB3(GetAllThreads, jvmti, &threads_count, &threads)))
84 return NSK_FALSE;
85
86 if (!NSK_VERIFY(threads_count > 0 && threads != NULL))
87 return NSK_FALSE;
88
89 /* find tested thread */
90 for (i = 0; i < threads_count; i++) {
91 if (!NSK_VERIFY(threads[i] != NULL))
92 return NSK_FALSE;
93
94 /* get thread information */
95 if (!NSK_JVMTI_VERIFY(
96 NSK_CPP_STUB3(GetThreadInfo, jvmti, threads[i], &info)))
97 return NSK_FALSE;
98
99 NSK_DISPLAY3(" thread #%d (%s): %p\n", i, info.name, threads[i]);
100
101 /* find by name */
102 if (info.name != NULL && (strcmp(info.name, THREAD_NAME) == 0)) {
103 thread = threads[i];
104 }
105 }
106
107 if (!NSK_JNI_VERIFY(jni, (thread =
108 NSK_CPP_STUB2(NewGlobalRef, jni, thread)) != NULL))
109 return NSK_FALSE;
110
111 /* deallocate threads list */
112 if (!NSK_JVMTI_VERIFY(
113 NSK_CPP_STUB2(Deallocate, jvmti, (unsigned char*)threads)))
114 return NSK_FALSE;
115
116 return NSK_TRUE;
117 }
118
119 /* ========================================================================== */
120
121 /** Agent algorithm. */
122 static void JNICALL
123 agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) {
124
125 if (!nsk_jvmti_waitForSync(timeout))
126 return;
127
128 if (!prepare(jvmti, jni)) {
129 nsk_jvmti_setFailStatus();
130 return;
131 }
132
133 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,
134 jvmti, JVMTI_ENABLE, JVMTI_EVENT_METHOD_EXIT, thread)))
135 nsk_jvmti_setFailStatus();
136
137 /* resume debugee and wait for sync */
138 if (!nsk_jvmti_resumeSync())
139 return;
140 if (!nsk_jvmti_waitForSync(timeout))
141 return;
142
143 NSK_DISPLAY1("MethodExit events received: %d\n",
144 MethodExitEventsCount);
145 if (!NSK_VERIFY(MethodExitEventsCount != 0))
146 nsk_jvmti_setFailStatus();
147
148 NSK_TRACE(NSK_CPP_STUB2(DeleteGlobalRef, jni, thread));
149
150 if (!nsk_jvmti_resumeSync())
151 return;
152 }
153
154 /* ========================================================================== */
155
156 /** Agent library initialization. */
157 #ifdef STATIC_BUILD
158 JNIEXPORT jint JNICALL Agent_OnLoad_ma10t003(JavaVM *jvm, char *options, void *reserved) {
159 return Agent_Initialize(jvm, options, reserved);
160 }
161 JNIEXPORT jint JNICALL Agent_OnAttach_ma10t003(JavaVM *jvm, char *options, void *reserved) {
162 return Agent_Initialize(jvm, options, reserved);
163 }
164 JNIEXPORT jint JNI_OnLoad_ma10t003(JavaVM *jvm, char *options, void *reserved) {
165 return JNI_VERSION_1_8;
166 }
167 #endif
168 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
169 jvmtiEnv* jvmti = NULL;
170 jvmtiCapabilities caps;
171 jvmtiEventCallbacks callbacks;
172
173 NSK_DISPLAY0("Agent_OnLoad\n");
174
175 if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))
176 return JNI_ERR;
177
178 timeout = nsk_jvmti_getWaitTime() * 60 * 1000;
179
180 if (!NSK_VERIFY((jvmti =
181 nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL))
182 return JNI_ERR;
183
184 if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL)))
185 return JNI_ERR;
186
187 memset(&caps, 0, sizeof(caps));
188 caps.can_generate_method_exit_events = 1;
189 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(AddCapabilities, jvmti, &caps))) {
190 return JNI_ERR;
191 }
192
193 memset(&callbacks, 0, sizeof(callbacks));
194 callbacks.MethodExit = &MethodExit;
195 if (!NSK_VERIFY(nsk_jvmti_init_MA(&callbacks)))
196 return JNI_ERR;
197
198 return JNI_OK;
199 }
200
201 /* ========================================================================== */
202
203 }