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(NSK_CPP_STUB5(GetMethodName,
61 jvmti_env, method, &name, &signature, NULL))) {
62 nsk_jvmti_setFailStatus();
63 return;
64 }
65
66 NSK_DISPLAY2("MethodEntry event: %s%s\n", name, signature);
67
68 if (name != NULL)
69 NSK_CPP_STUB2(Deallocate, jvmti_env, (unsigned char*)name);
70 if (signature != NULL)
71 NSK_CPP_STUB2(Deallocate, jvmti_env, (unsigned char*)signature);
72
73 switch(MethodEntryEventsCount) {
74 case 1:
75 NSK_DISPLAY0("Testcase #1: FramePop in both agents\n");
76 if (!NSK_JVMTI_VERIFY(
77 NSK_CPP_STUB3(NotifyFramePop, jvmti_env, thread, 0)))
78 nsk_jvmti_setFailStatus();
79 break;
80
81 case 2:
82 NSK_DISPLAY0("Testcase #2: w/o NotifyFramePop in 2nd agent\n");
83 break;
84
85 case 3:
86 NSK_DISPLAY0("Testcase #3: FramePop disabled in 2nd agent\n");
87 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,
88 jvmti_env, JVMTI_DISABLE, JVMTI_EVENT_FRAME_POP, NULL)))
89 nsk_jvmti_setFailStatus();
90 if (!NSK_JVMTI_VERIFY(
91 NSK_CPP_STUB3(NotifyFramePop, jvmti_env, thread, 0)))
92 nsk_jvmti_setFailStatus();
93 break;
94
95 default:
96 NSK_COMPLAIN0("Should no reach here");
97 nsk_jvmti_setFailStatus();
98 break;
99 }
100 }
101
102 static void JNICALL
103 FramePop(jvmtiEnv *jvmti_env, JNIEnv *jni_env,
104 jthread thread, jmethodID method,
105 jboolean wasPopedByException) {
106 char *name = NULL;
107 char *signature = NULL;
108
109 FramePopEventsCount++;
110 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB5(GetMethodName,
111 jvmti_env, method, &name, &signature, NULL))) {
112 nsk_jvmti_setFailStatus();
113 return;
114 }
115
116 NSK_DISPLAY2("FramePop event: %s%s\n", name, signature);
117
118 if (name != NULL)
119 NSK_CPP_STUB2(Deallocate, jvmti_env, (unsigned char*)name);
120 if (signature != NULL)
121 NSK_CPP_STUB2(Deallocate, jvmti_env, (unsigned char*)signature);
122
123 switch(MethodEntryEventsCount) {
124 case 1:
125 /* It's ok */
126 break;
127
128 case 2:
129 NSK_COMPLAIN0("FramePop w/o NotifyFramePop in 2nd agent\n");
130 nsk_jvmti_setFailStatus();
131 break;
132
133 case 3:
134 NSK_COMPLAIN0("FramePop been disabled in 2nd agent\n");
135 nsk_jvmti_setFailStatus();
136 break;
137
138 default:
139 NSK_COMPLAIN0("Should no reach here");
140 nsk_jvmti_setFailStatus();
141 break;
142 }
143 }
144
145 /* ========================================================================== */
146
147 static int prepare(jvmtiEnv* jvmti, JNIEnv* jni) {
148 const char* THREAD_NAME = "Debuggee Thread";
149 jvmtiThreadInfo info;
150 jthread *threads = NULL;
151 jclass klass = NULL;
152 jint threads_count = 0;
153 int i;
154
155 NSK_DISPLAY0("Prepare: find tested thread\n");
156
157 /* get all live threads */
158 if (!NSK_JVMTI_VERIFY(
159 NSK_CPP_STUB3(GetAllThreads, jvmti, &threads_count, &threads)))
160 return NSK_FALSE;
161
162 if (!NSK_VERIFY(threads_count > 0 && threads != NULL))
163 return NSK_FALSE;
164
165 /* find tested thread */
166 for (i = 0; i < threads_count; i++) {
167 if (!NSK_VERIFY(threads[i] != NULL))
168 return NSK_FALSE;
169
170 /* get thread information */
171 if (!NSK_JVMTI_VERIFY(
172 NSK_CPP_STUB3(GetThreadInfo, jvmti, threads[i], &info)))
173 return NSK_FALSE;
174
175 NSK_DISPLAY3(" thread #%d (%s): %p\n", i, info.name, threads[i]);
176
177 /* find by name */
178 if (info.name != NULL && (strcmp(info.name, THREAD_NAME) == 0)) {
179 thread = threads[i];
180 }
181
182 if (info.name != NULL) {
183 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(
184 Deallocate, jvmti, (unsigned char*)info.name)))
185 return NSK_FALSE;
186 }
187 }
188
189 /* deallocate threads list */
190 if (!NSK_JVMTI_VERIFY(
191 NSK_CPP_STUB2(Deallocate, jvmti, (unsigned char*)threads)))
192 return NSK_FALSE;
193
194 if (thread == NULL) {
195 NSK_COMPLAIN0("Debuggee thread not found");
196 return NSK_FALSE;
197 }
198
199 if (!NSK_JNI_VERIFY(jni, (thread =
200 NSK_CPP_STUB2(NewGlobalRef, jni, thread)) != NULL))
201 return NSK_FALSE;
202
203 /* get tested thread class */
204 if (!NSK_JNI_VERIFY(jni, (klass =
205 NSK_CPP_STUB2(GetObjectClass, jni, thread)) != NULL))
206 return NSK_FALSE;
207
208 /* get tested thread method 'checkPoint' */
209 if (!NSK_JNI_VERIFY(jni, (midCheckPoint = NSK_CPP_STUB4(
210 GetMethodID, jni, klass, "checkPoint", "()V")) != NULL))
211 return NSK_FALSE;
212
213 /* enable events */
214 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,
215 jvmti, JVMTI_ENABLE, JVMTI_EVENT_METHOD_ENTRY, NULL)))
216 return NSK_FALSE;
217 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,
218 jvmti, JVMTI_ENABLE, JVMTI_EVENT_FRAME_POP, NULL)))
219 return NSK_FALSE;
220
221 return NSK_TRUE;
222 }
223
224 /* ========================================================================== */
225
226 /** Agent algorithm. */
227 static void JNICALL
228 agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) {
229
230 if (!nsk_jvmti_waitForSync(timeout))
231 return;
232
233 if (!prepare(jvmti, jni)) {
234 nsk_jvmti_setFailStatus();
235 return;
236 }
237
238 /* resume debugee and wait for sync */
239 if (!nsk_jvmti_resumeSync())
240 return;
241 if (!nsk_jvmti_waitForSync(timeout))
242 return;
243
244 if (FramePopEventsCount == 0) {
245 NSK_COMPLAIN0("No FramePop events\n");
246 nsk_jvmti_setFailStatus();
247 }
248
249 NSK_TRACE(NSK_CPP_STUB2(DeleteGlobalRef, jni, thread));
250 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB4(SetEventNotificationMode,
251 jvmti, JVMTI_DISABLE, JVMTI_EVENT_METHOD_ENTRY, NULL)))
252 nsk_jvmti_setFailStatus();
253
254 if (!nsk_jvmti_resumeSync())
255 return;
256 }
257
258 /* ========================================================================== */
259
260 /** Agent library initialization. */
261 #ifdef STATIC_BUILD
262 JNIEXPORT jint JNICALL Agent_OnLoad_ma05t001a(JavaVM *jvm, char *options, void *reserved) {
263 return Agent_Initialize(jvm, options, reserved);
264 }
265 JNIEXPORT jint JNICALL Agent_OnAttach_ma05t001a(JavaVM *jvm, char *options, void *reserved) {
266 return Agent_Initialize(jvm, options, reserved);
267 }
268 JNIEXPORT jint JNI_OnLoad_ma05t001a(JavaVM *jvm, char *options, void *reserved) {
269 return JNI_VERSION_1_8;
270 }
271 #endif
272 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
273 jvmtiEnv* jvmti = NULL;
274 jvmtiEventCallbacks callbacks;
275 jvmtiCapabilities caps;
276
277 NSK_DISPLAY0("Agent_OnLoad\n");
278
279 if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))
280 return JNI_ERR;
281
282 timeout = nsk_jvmti_getWaitTime() * 60 * 1000;
283
284 if (!NSK_VERIFY((jvmti =
285 nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL))
286 return JNI_ERR;
287
288 memset(&caps, 0, sizeof(caps));
289 caps.can_generate_method_entry_events = 1;
290 caps.can_generate_frame_pop_events = 1;
291 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(AddCapabilities, jvmti, &caps)))
292 return JNI_ERR;
293
294 if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL)))
295 return JNI_ERR;
296
297 memset(&callbacks, 0, sizeof(callbacks));
298 callbacks.MethodEntry = &MethodEntry;
299 callbacks.FramePop = &FramePop;
300 if (!NSK_VERIFY(nsk_jvmti_init_MA(&callbacks)))
301 return JNI_ERR;
302
303 return JNI_OK;
304 }
305
306 /* ========================================================================== */
307
308 }