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 static jmethodID midCheckPoint = NULL;
43 static int MethodEntryEventsCount = 0;
44 static int FramePopEventsCount = 0;
45
46 /* ========================================================================== */
47
48 /** callback functions **/
49
50 static void JNICALL
51 MethodEntry(jvmtiEnv *jvmti_env, JNIEnv *jni_env,
52 jthread thread, jmethodID method) {
53 char *name = NULL;
54 char *signature = NULL;
55
56 if (method != midCheckPoint)
57 return;
58
59 MethodEntryEventsCount++;
60 if (!NSK_JVMTI_VERIFY(jvmti_env->GetMethodName(method, &name, &signature, NULL))) {
61 nsk_jvmti_setFailStatus();
62 return;
63 }
64
65 NSK_DISPLAY2("MethodEntry event: %s%s\n", name, signature);
66
67 if (name != NULL)
68 jvmti_env->Deallocate((unsigned char*)name);
69 if (signature != NULL)
70 jvmti_env->Deallocate((unsigned char*)signature);
71
72 switch(MethodEntryEventsCount) {
73 case 1:
74 NSK_DISPLAY0("Testcase #1: FramePop in both agents\n");
75 if (!NSK_JVMTI_VERIFY(jvmti_env->NotifyFramePop(thread, 0)))
76 nsk_jvmti_setFailStatus();
77 break;
78
79 case 2:
80 NSK_DISPLAY0("Testcase #2: w/o NotifyFramePop in 2nd agent\n");
81 break;
82
83 case 3:
84 NSK_DISPLAY0("Testcase #3: FramePop disabled in 2nd agent\n");
85 if (!NSK_JVMTI_VERIFY(jvmti_env->SetEventNotificationMode(JVMTI_DISABLE, JVMTI_EVENT_FRAME_POP, NULL)))
86 nsk_jvmti_setFailStatus();
87 if (!NSK_JVMTI_VERIFY(jvmti_env->NotifyFramePop(thread, 0)))
88 nsk_jvmti_setFailStatus();
89 break;
90
91 default:
92 NSK_COMPLAIN0("Should no reach here");
93 nsk_jvmti_setFailStatus();
94 break;
95 }
96 }
97
98 static void JNICALL
99 FramePop(jvmtiEnv *jvmti_env, JNIEnv *jni_env,
100 jthread thread, jmethodID method,
101 jboolean wasPopedByException) {
102 char *name = NULL;
103 char *signature = NULL;
104
105 FramePopEventsCount++;
106 if (!NSK_JVMTI_VERIFY(jvmti_env->GetMethodName(method, &name, &signature, NULL))) {
107 nsk_jvmti_setFailStatus();
108 return;
109 }
110
111 NSK_DISPLAY2("FramePop event: %s%s\n", name, signature);
112
113 if (name != NULL)
114 jvmti_env->Deallocate((unsigned char*)name);
115 if (signature != NULL)
116 jvmti_env->Deallocate((unsigned char*)signature);
117
118 switch(MethodEntryEventsCount) {
119 case 1:
120 /* It's ok */
121 break;
122
123 case 2:
124 NSK_COMPLAIN0("FramePop w/o NotifyFramePop in 2nd agent\n");
125 nsk_jvmti_setFailStatus();
126 break;
127
128 case 3:
129 NSK_COMPLAIN0("FramePop been disabled in 2nd agent\n");
130 nsk_jvmti_setFailStatus();
131 break;
132
133 default:
134 NSK_COMPLAIN0("Should no reach here");
135 nsk_jvmti_setFailStatus();
136 break;
137 }
138 }
139
140 /* ========================================================================== */
141
142 static int prepare(jvmtiEnv* jvmti, JNIEnv* jni) {
143 const char* THREAD_NAME = "Debuggee Thread";
144 jvmtiThreadInfo info;
145 jthread *threads = NULL;
146 jclass klass = NULL;
147 jint threads_count = 0;
148 int i;
149
150 NSK_DISPLAY0("Prepare: find tested thread\n");
151
152 /* get all live threads */
153 if (!NSK_JVMTI_VERIFY(jvmti->GetAllThreads(&threads_count, &threads)))
154 return NSK_FALSE;
155
156 if (!NSK_VERIFY(threads_count > 0 && threads != NULL))
157 return NSK_FALSE;
158
159 /* find tested thread */
160 for (i = 0; i < threads_count; i++) {
161 if (!NSK_VERIFY(threads[i] != NULL))
162 return NSK_FALSE;
163
164 /* get thread information */
165 if (!NSK_JVMTI_VERIFY(jvmti->GetThreadInfo(threads[i], &info)))
166 return NSK_FALSE;
167
168 NSK_DISPLAY3(" thread #%d (%s): %p\n", i, info.name, threads[i]);
169
170 /* find by name */
171 if (info.name != NULL && (strcmp(info.name, THREAD_NAME) == 0)) {
172 thread = threads[i];
173 }
174
175 if (info.name != NULL) {
176 if (!NSK_JVMTI_VERIFY(jvmti->Deallocate((unsigned char*)info.name)))
177 return NSK_FALSE;
178 }
179 }
180
181 /* deallocate threads list */
182 if (!NSK_JVMTI_VERIFY(jvmti->Deallocate((unsigned char*)threads)))
183 return NSK_FALSE;
184
185 if (thread == NULL) {
186 NSK_COMPLAIN0("Debuggee thread not found");
187 return NSK_FALSE;
188 }
189
190 if (!NSK_JNI_VERIFY(jni, (thread = jni->NewGlobalRef(thread)) != NULL))
191 return NSK_FALSE;
192
193 /* get tested thread class */
194 if (!NSK_JNI_VERIFY(jni, (klass = jni->GetObjectClass(thread)) != NULL))
195 return NSK_FALSE;
196
197 /* get tested thread method 'checkPoint' */
198 if (!NSK_JNI_VERIFY(jni, (midCheckPoint = jni->GetMethodID(klass, "checkPoint", "()V")) != NULL))
199 return NSK_FALSE;
200
201 /* enable events */
202 if (!NSK_JVMTI_VERIFY(jvmti->SetEventNotificationMode(JVMTI_ENABLE, JVMTI_EVENT_METHOD_ENTRY, NULL)))
203 return NSK_FALSE;
204 if (!NSK_JVMTI_VERIFY(jvmti->SetEventNotificationMode(JVMTI_ENABLE, JVMTI_EVENT_FRAME_POP, NULL)))
205 return NSK_FALSE;
206
207 return NSK_TRUE;
208 }
209
210 /* ========================================================================== */
211
212 /** Agent algorithm. */
213 static void JNICALL
214 agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) {
215
216 if (!nsk_jvmti_waitForSync(timeout))
217 return;
218
219 if (!prepare(jvmti, jni)) {
220 nsk_jvmti_setFailStatus();
221 return;
222 }
223
224 /* resume debugee and wait for sync */
225 if (!nsk_jvmti_resumeSync())
226 return;
227 if (!nsk_jvmti_waitForSync(timeout))
228 return;
229
230 if (FramePopEventsCount == 0) {
231 NSK_COMPLAIN0("No FramePop events\n");
232 nsk_jvmti_setFailStatus();
233 }
234
235 NSK_TRACE(jni->DeleteGlobalRef(thread));
236 if (!NSK_JVMTI_VERIFY(jvmti->SetEventNotificationMode(JVMTI_DISABLE, JVMTI_EVENT_METHOD_ENTRY, NULL)))
237 nsk_jvmti_setFailStatus();
238
239 if (!nsk_jvmti_resumeSync())
240 return;
241 }
242
243 /* ========================================================================== */
244
245 /** Agent library initialization. */
246 #ifdef STATIC_BUILD
247 JNIEXPORT jint JNICALL Agent_OnLoad_ma05t001a(JavaVM *jvm, char *options, void *reserved) {
248 return Agent_Initialize(jvm, options, reserved);
249 }
250 JNIEXPORT jint JNICALL Agent_OnAttach_ma05t001a(JavaVM *jvm, char *options, void *reserved) {
251 return Agent_Initialize(jvm, options, reserved);
252 }
253 JNIEXPORT jint JNI_OnLoad_ma05t001a(JavaVM *jvm, char *options, void *reserved) {
254 return JNI_VERSION_1_8;
255 }
256 #endif
257 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
258 jvmtiEnv* jvmti = NULL;
259 jvmtiEventCallbacks callbacks;
260 jvmtiCapabilities caps;
261
262 NSK_DISPLAY0("Agent_OnLoad\n");
263
264 if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))
265 return JNI_ERR;
266
267 timeout = nsk_jvmti_getWaitTime() * 60 * 1000;
268
269 if (!NSK_VERIFY((jvmti =
270 nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL))
271 return JNI_ERR;
272
273 memset(&caps, 0, sizeof(caps));
274 caps.can_generate_method_entry_events = 1;
275 caps.can_generate_frame_pop_events = 1;
276 if (!NSK_JVMTI_VERIFY(jvmti->AddCapabilities(&caps)))
277 return JNI_ERR;
278
279 if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL)))
280 return JNI_ERR;
281
282 memset(&callbacks, 0, sizeof(callbacks));
283 callbacks.MethodEntry = &MethodEntry;
284 callbacks.FramePop = &FramePop;
285 if (!NSK_VERIFY(nsk_jvmti_init_MA(&callbacks)))
286 return JNI_ERR;
287
288 return JNI_OK;
289 }
290
291 /* ========================================================================== */
292
293 }