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 extern "C" {
31
32 #define MAX_DEPTH 1024
33
34 /* ========================================================================== */
35
36 static const int NUMBER_OF_SAMPLES = 1000;
37 static const int DISPLAYING_FREQUENCY = 100;
38 static const jlong SAMPLING_INTERVAL = 10;
39
40 /* scaffold objects */
41 static jlong timeout = 0;
42
43 /* test objects */
44 static jthread thread = NULL;
45 static jrawMonitorID waitLock = NULL;
46 static jrawMonitorID frameLock = NULL;
47 static int sampleCount = 0;
48 static volatile int depth = 0;
49 static jvmtiFrameInfo sampleStack[MAX_DEPTH];
50 static jint frameCount = 0;
51 static jvmtiFrameInfo frameBuffer[MAX_DEPTH];
52
53 /* ========================================================================== */
54
55 static int prepare(jvmtiEnv* jvmti, JNIEnv* jni) {
56 const char* THREAD_NAME = "Debuggee Thread";
57 jvmtiThreadInfo info;
58 jthread *threads = NULL;
59 jint threads_count = 0;
60 int i;
61
62 NSK_DISPLAY0("Prepare: find tested thread\n");
63
64 /* get all live threads */
65 if (!NSK_JVMTI_VERIFY(jvmti->GetAllThreads(&threads_count, &threads)))
66 return NSK_FALSE;
67
68 if (!NSK_VERIFY(threads_count > 0 && threads != NULL))
69 return NSK_FALSE;
70
71 /* find tested thread */
72 for (i = 0; i < threads_count; i++) {
73 if (!NSK_VERIFY(threads[i] != NULL))
74 return NSK_FALSE;
75
76 /* get thread information */
77 if (!NSK_JVMTI_VERIFY(jvmti->GetThreadInfo(threads[i], &info)))
78 return NSK_FALSE;
79
80 NSK_DISPLAY3(" thread #%d (%s): %p\n", i, info.name, threads[i]);
81
82 /* find by name */
83 if (info.name != NULL && (strcmp(info.name, THREAD_NAME) == 0)) {
84 thread = threads[i];
85 }
86
87 if (info.name != NULL) {
88 if (!NSK_JVMTI_VERIFY(jvmti->Deallocate((unsigned char*)info.name)))
89 return NSK_FALSE;
90 }
91 }
92
93 /* deallocate threads list */
94 if (!NSK_JVMTI_VERIFY(jvmti->Deallocate((unsigned char*)threads)))
95 return NSK_FALSE;
96
97 if (thread == NULL) {
98 NSK_COMPLAIN0("Debuggee thread not found");
99 return NSK_FALSE;
100 }
101
102 if (!NSK_JVMTI_VERIFY(jvmti->CreateRawMonitor("waitLock", &waitLock)))
103 return NSK_FALSE;
104
105 return NSK_TRUE;
106 }
107
108 /* ============================================================================= */
109
110 static int wait_for(jvmtiEnv* jvmti, jlong millis) {
111
112 if (!NSK_JVMTI_VERIFY(jvmti->RawMonitorEnter(waitLock)))
113 return NSK_FALSE;
114
115 if (!NSK_JVMTI_VERIFY(jvmti->RawMonitorWait(waitLock, millis)))
116 nsk_jvmti_setFailStatus();
117
118 if (!NSK_JVMTI_VERIFY(jvmti->RawMonitorExit(waitLock)))
119 return NSK_FALSE;
120
121 return NSK_TRUE;
122 }
123
124 static int displayFrameInfo(jvmtiEnv* jvmti, jint i) {
125 char buffer[32];
126 char *name = NULL;
127 char *signature = NULL;
128
129 if (!NSK_JVMTI_VERIFY(jvmti->GetMethodName(frameBuffer[frameCount-1-i].method, &name, &signature, NULL)))
130 return NSK_FALSE;
131
132 NSK_DISPLAY4(" got[%d] method: %s%s, location: %s\n", i, name,
133 signature, jlong_to_string(frameBuffer[frameCount-1-i].location, buffer));
134 if (name != NULL)
135 jvmti->Deallocate((unsigned char*)name);
136 if (signature != NULL)
137 jvmti->Deallocate((unsigned char*)signature);
138
139 if (!NSK_JVMTI_VERIFY(jvmti->GetMethodName(sampleStack[i].method, &name, &signature, NULL)))
140 return NSK_FALSE;
141
142 NSK_DISPLAY4(" exp[%d] method: %s%s, location: %s\n", i, name,
143 signature, jlong_to_string(sampleStack[i].location, buffer));
144 if (name != NULL)
145 jvmti->Deallocate((unsigned char*)name);
146 if (signature != NULL)
147 jvmti->Deallocate((unsigned char*)signature);
148
149 return NSK_TRUE;
150 }
151
152 static int complainFrameInfo(jvmtiEnv* jvmti, jint i) {
153 char buffer[32];
154 char *name = NULL;
155 char *signature = NULL;
156
157 if (!NSK_JVMTI_VERIFY(jvmti->GetMethodName(frameBuffer[frameCount-1-i].method, &name, &signature, NULL)))
158 return NSK_FALSE;
159
160 NSK_COMPLAIN3(" got: method=%s%s, location=%s\n", name, signature,
161 jlong_to_string(frameBuffer[frameCount-1-i].location, buffer));
162 if (name != NULL)
163 jvmti->Deallocate((unsigned char*)name);
164 if (signature != NULL)
165 jvmti->Deallocate((unsigned char*)signature);
166
167 if (!NSK_JVMTI_VERIFY(jvmti->GetMethodName(sampleStack[i].method, &name, &signature, NULL)))
168 return NSK_FALSE;
169
170 NSK_COMPLAIN3(" expected: method=%s%s, location=%s\n", name, signature,
171 jlong_to_string(sampleStack[i].location, buffer));
172 if (name != NULL)
173 jvmti->Deallocate((unsigned char*)name);
174 if (signature != NULL)
175 jvmti->Deallocate((unsigned char*)signature);
176
177 return NSK_TRUE;
178 }
179
180 static int checkStackTrace(jvmtiEnv* jvmti, JNIEnv* jni) {
181 jint i;
182 int res = NSK_TRUE;
183 int displayFlag =
184 (nsk_getVerboseMode() && (sampleCount % DISPLAYING_FREQUENCY) == 0);
185
186 if (!NSK_JVMTI_VERIFY(jvmti->RawMonitorEnter(frameLock)))
187 return NSK_FALSE;
188
189 /* get stack trace */
190 if (!NSK_JVMTI_VERIFY(jvmti->GetStackTrace(thread, 0, MAX_DEPTH, frameBuffer, &frameCount))) {
191 res = NSK_FALSE;
192 } else {
193 if (displayFlag) {
194 NSK_DISPLAY3("Sample #%d, frameCount: %d, depth: %d\n",
195 sampleCount, frameCount, depth);
196 }
197 if (!NSK_VERIFY(frameCount >= depth)) {
198 NSK_COMPLAIN3("Sample #%d, wrong frameCount: %d, expected >= %d\n",
199 sampleCount, frameCount, depth);
200 res = NSK_FALSE;
201 } else {
202 for (i = 0; i < depth; i++) {
203 if (displayFlag && !displayFrameInfo(jvmti, i))
204 res = NSK_FALSE;
205 if (!NSK_VERIFY(sampleStack[i].method ==
206 frameBuffer[frameCount-1-i].method) ||
207 !NSK_VERIFY(sampleStack[i].location ==
208 frameBuffer[frameCount-1-i].location)) {
209
210 NSK_COMPLAIN3("Sample #%d, depth=%d, wrong frame [%d]:\n",
211 sampleCount, depth, i);
212 complainFrameInfo(jvmti, i);
213 res = NSK_FALSE;
214 }
215 }
216 }
217 }
218
219 if (!NSK_JVMTI_VERIFY(jvmti->RawMonitorExit(frameLock)))
220 return NSK_FALSE;
221
222 return res;
223 }
224
225 /* ========================================================================== */
226
227 /* agent algorithm */
228 static void JNICALL
229 agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) {
230
231 /* wait for initial sync */
232 if (!nsk_jvmti_waitForSync(timeout))
233 return;
234
235 if (!prepare(jvmti, jni)) {
236 nsk_jvmti_setFailStatus();
237 return;
238 }
239
240 /* sample stack of the tested thread */
241 for (sampleCount = 0;
242 sampleCount < NUMBER_OF_SAMPLES && !nsk_jvmti_isFailStatus();
243 sampleCount++) {
244 wait_for(jvmti, SAMPLING_INTERVAL);
245 if (!checkStackTrace(jvmti, jni))
246 nsk_jvmti_setFailStatus();
247 }
248
249 /* resume debugee after last sync */
250 if (!nsk_jvmti_resumeSync())
251 return;
252 }
253
254 /* ========================================================================== */
255
256 JNIEXPORT jint JNICALL
257 Java_nsk_jvmti_scenarios_sampling_SP07_sp07t001Thread_wrapper(JNIEnv* jni,
258 jobject obj, jint i) {
259 jint result = 0;
260 jclass klass = NULL;
261 jmethodID method = NULL;
262 jvmtiEnv* jvmti = nsk_jvmti_getAgentJVMTIEnv();
263
264 if (!NSK_VERIFY(depth < MAX_DEPTH)) {
265 nsk_jvmti_setFailStatus();
266 return 0;
267 }
268
269 if (!NSK_JVMTI_VERIFY(jvmti->RawMonitorEnter(frameLock)))
270 return NSK_FALSE;
271
272 if (!NSK_JVMTI_VERIFY(jvmti->GetFrameLocation(NULL, 1, &sampleStack[depth].method, &sampleStack[depth].location))) {
273 nsk_jvmti_setFailStatus();
274 return 0;
275 }
276
277 depth++;
278
279 if (!NSK_JVMTI_VERIFY(jvmti->GetFrameLocation(NULL, 0, &sampleStack[depth].method, &sampleStack[depth].location))) {
280 nsk_jvmti_setFailStatus();
281 return 0;
282 }
283
284 depth++;
285
286 if (!NSK_JVMTI_VERIFY(jvmti->RawMonitorExit(frameLock)))
287 return NSK_FALSE;
288
289 if (!NSK_JNI_VERIFY(jni, (klass = jni->GetObjectClass(obj)) != NULL)) {
290 nsk_jvmti_setFailStatus();
291 return 0;
292 }
293
294 if (!NSK_JNI_VERIFY(jni, (method = jni->GetMethodID(klass, "fibonacci", "(I)I")) != NULL)) {
295 nsk_jvmti_setFailStatus();
296 return 0;
297 }
298
299 result = jni->CallIntMethod(obj, method, i);
300
301 if (!NSK_JVMTI_VERIFY(jvmti->RawMonitorEnter(frameLock)))
302 return NSK_FALSE;
303
304 depth--;
305 depth--;
306
307 if (!NSK_JVMTI_VERIFY(jvmti->RawMonitorExit(frameLock)))
308 return NSK_FALSE;
309
310 return result;
311 }
312
313 /* ========================================================================== */
314
315 /* agent library initialization */
316 #ifdef STATIC_BUILD
317 JNIEXPORT jint JNICALL Agent_OnLoad_sp07t001(JavaVM *jvm, char *options, void *reserved) {
318 return Agent_Initialize(jvm, options, reserved);
319 }
320 JNIEXPORT jint JNICALL Agent_OnAttach_sp07t001(JavaVM *jvm, char *options, void *reserved) {
321 return Agent_Initialize(jvm, options, reserved);
322 }
323 JNIEXPORT jint JNI_OnLoad_sp07t001(JavaVM *jvm, char *options, void *reserved) {
324 return JNI_VERSION_1_8;
325 }
326 #endif
327 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
328 jvmtiEnv* jvmti = NULL;
329
330 /* init framework and parse options */
331 if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))
332 return JNI_ERR;
333
334 timeout = nsk_jvmti_getWaitTime() * 60000;
335 NSK_DISPLAY1("Timeout: %d msc\n", (int)timeout);
336
337 /* create JVMTI environment */
338 if (!NSK_VERIFY((jvmti =
339 nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL))
340 return JNI_ERR;
341
342 if (!NSK_JVMTI_VERIFY(jvmti->CreateRawMonitor("frameLock", &frameLock)))
343 return NSK_FALSE;
344
345 /* register agent proc and arg */
346 if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL)))
347 return JNI_ERR;
348
349 return JNI_OK;
350 }
351
352 /* ========================================================================== */
353
354 }