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(
66 NSK_CPP_STUB3(GetAllThreads, jvmti, &threads_count, &threads)))
67 return NSK_FALSE;
68
69 if (!NSK_VERIFY(threads_count > 0 && threads != NULL))
70 return NSK_FALSE;
71
72 /* find tested thread */
73 for (i = 0; i < threads_count; i++) {
74 if (!NSK_VERIFY(threads[i] != NULL))
75 return NSK_FALSE;
76
77 /* get thread information */
78 if (!NSK_JVMTI_VERIFY(
79 NSK_CPP_STUB3(GetThreadInfo, jvmti, threads[i], &info)))
80 return NSK_FALSE;
81
82 NSK_DISPLAY3(" thread #%d (%s): %p\n", i, info.name, threads[i]);
83
84 /* find by name */
85 if (info.name != NULL && (strcmp(info.name, THREAD_NAME) == 0)) {
86 thread = threads[i];
87 }
88
89 if (info.name != NULL) {
90 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(
91 Deallocate, jvmti, (unsigned char*)info.name)))
92 return NSK_FALSE;
93 }
94 }
95
96 /* deallocate threads list */
97 if (!NSK_JVMTI_VERIFY(
98 NSK_CPP_STUB2(Deallocate, jvmti, (unsigned char*)threads)))
99 return NSK_FALSE;
100
101 if (thread == NULL) {
102 NSK_COMPLAIN0("Debuggee thread not found");
103 return NSK_FALSE;
104 }
105
106 if (!NSK_JVMTI_VERIFY(
107 NSK_CPP_STUB3(CreateRawMonitor, jvmti, "waitLock", &waitLock)))
108 return NSK_FALSE;
109
110 return NSK_TRUE;
111 }
112
113 /* ============================================================================= */
114
115 static int wait_for(jvmtiEnv* jvmti, jlong millis) {
116
117 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(RawMonitorEnter, jvmti, waitLock)))
118 return NSK_FALSE;
119
120 if (!NSK_JVMTI_VERIFY(
121 NSK_CPP_STUB3(RawMonitorWait, jvmti, waitLock, millis)))
122 nsk_jvmti_setFailStatus();
123
124 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(RawMonitorExit, jvmti, waitLock)))
125 return NSK_FALSE;
126
127 return NSK_TRUE;
128 }
129
130 static int displayFrameInfo(jvmtiEnv* jvmti, jint i) {
131 char buffer[32];
132 char *name = NULL;
133 char *signature = NULL;
134
135 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB5(GetMethodName, jvmti,
136 frameBuffer[frameCount-1-i].method, &name, &signature, NULL)))
137 return NSK_FALSE;
138
139 NSK_DISPLAY4(" got[%d] method: %s%s, location: %s\n", i, name,
140 signature, jlong_to_string(frameBuffer[frameCount-1-i].location, buffer));
141 if (name != NULL)
142 NSK_CPP_STUB2(Deallocate, jvmti, (unsigned char*)name);
143 if (signature != NULL)
144 NSK_CPP_STUB2(Deallocate, jvmti, (unsigned char*)signature);
145
146 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB5(GetMethodName, jvmti,
147 sampleStack[i].method, &name, &signature, NULL)))
148 return NSK_FALSE;
149
150 NSK_DISPLAY4(" exp[%d] method: %s%s, location: %s\n", i, name,
151 signature, jlong_to_string(sampleStack[i].location, buffer));
152 if (name != NULL)
153 NSK_CPP_STUB2(Deallocate, jvmti, (unsigned char*)name);
154 if (signature != NULL)
155 NSK_CPP_STUB2(Deallocate, jvmti, (unsigned char*)signature);
156
157 return NSK_TRUE;
158 }
159
160 static int complainFrameInfo(jvmtiEnv* jvmti, jint i) {
161 char buffer[32];
162 char *name = NULL;
163 char *signature = NULL;
164
165 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB5(GetMethodName, jvmti,
166 frameBuffer[frameCount-1-i].method, &name, &signature, NULL)))
167 return NSK_FALSE;
168
169 NSK_COMPLAIN3(" got: method=%s%s, location=%s\n", name, signature,
170 jlong_to_string(frameBuffer[frameCount-1-i].location, buffer));
171 if (name != NULL)
172 NSK_CPP_STUB2(Deallocate, jvmti, (unsigned char*)name);
173 if (signature != NULL)
174 NSK_CPP_STUB2(Deallocate, jvmti, (unsigned char*)signature);
175
176 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB5(GetMethodName, jvmti,
177 sampleStack[i].method, &name, &signature, NULL)))
178 return NSK_FALSE;
179
180 NSK_COMPLAIN3(" expected: method=%s%s, location=%s\n", name, signature,
181 jlong_to_string(sampleStack[i].location, buffer));
182 if (name != NULL)
183 NSK_CPP_STUB2(Deallocate, jvmti, (unsigned char*)name);
184 if (signature != NULL)
185 NSK_CPP_STUB2(Deallocate, jvmti, (unsigned char*)signature);
186
187 return NSK_TRUE;
188 }
189
190 static int checkStackTrace(jvmtiEnv* jvmti, JNIEnv* jni) {
191 jint i;
192 int res = NSK_TRUE;
193 int displayFlag =
194 (nsk_getVerboseMode() && (sampleCount % DISPLAYING_FREQUENCY) == 0);
195
196 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(RawMonitorEnter, jvmti, frameLock)))
197 return NSK_FALSE;
198
199 /* get stack trace */
200 if (!NSK_JVMTI_VERIFY(
201 NSK_CPP_STUB6(GetStackTrace, jvmti, thread,
202 0, MAX_DEPTH, frameBuffer, &frameCount))) {
203 res = NSK_FALSE;
204 } else {
205 if (displayFlag) {
206 NSK_DISPLAY3("Sample #%d, frameCount: %d, depth: %d\n",
207 sampleCount, frameCount, depth);
208 }
209 if (!NSK_VERIFY(frameCount >= depth)) {
210 NSK_COMPLAIN3("Sample #%d, wrong frameCount: %d, expected >= %d\n",
211 sampleCount, frameCount, depth);
212 res = NSK_FALSE;
213 } else {
214 for (i = 0; i < depth; i++) {
215 if (displayFlag && !displayFrameInfo(jvmti, i))
216 res = NSK_FALSE;
217 if (!NSK_VERIFY(sampleStack[i].method ==
218 frameBuffer[frameCount-1-i].method) ||
219 !NSK_VERIFY(sampleStack[i].location ==
220 frameBuffer[frameCount-1-i].location)) {
221
222 NSK_COMPLAIN3("Sample #%d, depth=%d, wrong frame [%d]:\n",
223 sampleCount, depth, i);
224 complainFrameInfo(jvmti, i);
225 res = NSK_FALSE;
226 }
227 }
228 }
229 }
230
231 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(RawMonitorExit, jvmti, frameLock)))
232 return NSK_FALSE;
233
234 return res;
235 }
236
237 /* ========================================================================== */
238
239 /* agent algorithm */
240 static void JNICALL
241 agentProc(jvmtiEnv* jvmti, JNIEnv* jni, void* arg) {
242
243 /* wait for initial sync */
244 if (!nsk_jvmti_waitForSync(timeout))
245 return;
246
247 if (!prepare(jvmti, jni)) {
248 nsk_jvmti_setFailStatus();
249 return;
250 }
251
252 /* sample stack of the tested thread */
253 for (sampleCount = 0;
254 sampleCount < NUMBER_OF_SAMPLES && !nsk_jvmti_isFailStatus();
255 sampleCount++) {
256 wait_for(jvmti, SAMPLING_INTERVAL);
257 if (!checkStackTrace(jvmti, jni))
258 nsk_jvmti_setFailStatus();
259 }
260
261 /* resume debugee after last sync */
262 if (!nsk_jvmti_resumeSync())
263 return;
264 }
265
266 /* ========================================================================== */
267
268 JNIEXPORT jint JNICALL
269 Java_nsk_jvmti_scenarios_sampling_SP07_sp07t001Thread_wrapper(JNIEnv* jni,
270 jobject obj, jint i) {
271 jint result = 0;
272 jclass klass = NULL;
273 jmethodID method = NULL;
274 jvmtiEnv* jvmti = nsk_jvmti_getAgentJVMTIEnv();
275
276 if (!NSK_VERIFY(depth < MAX_DEPTH)) {
277 nsk_jvmti_setFailStatus();
278 return 0;
279 }
280
281 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(RawMonitorEnter, jvmti, frameLock)))
282 return NSK_FALSE;
283
284 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB5(GetFrameLocation, jvmti, NULL, 1,
285 &sampleStack[depth].method, &sampleStack[depth].location))) {
286 nsk_jvmti_setFailStatus();
287 return 0;
288 }
289
290 depth++;
291
292 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB5(GetFrameLocation, jvmti, NULL, 0,
293 &sampleStack[depth].method, &sampleStack[depth].location))) {
294 nsk_jvmti_setFailStatus();
295 return 0;
296 }
297
298 depth++;
299
300 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(RawMonitorExit, jvmti, frameLock)))
301 return NSK_FALSE;
302
303 if (!NSK_JNI_VERIFY(jni, (klass = NSK_CPP_STUB2(GetObjectClass,
304 jni, obj)) != NULL)) {
305 nsk_jvmti_setFailStatus();
306 return 0;
307 }
308
309 if (!NSK_JNI_VERIFY(jni, (method = NSK_CPP_STUB4(GetMethodID,
310 jni, klass, "fibonacci", "(I)I")) != NULL)) {
311 nsk_jvmti_setFailStatus();
312 return 0;
313 }
314
315 result = NSK_CPP_STUB4(CallIntMethod, jni, obj, method, i);
316
317 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(RawMonitorEnter, jvmti, frameLock)))
318 return NSK_FALSE;
319
320 depth--;
321 depth--;
322
323 if (!NSK_JVMTI_VERIFY(NSK_CPP_STUB2(RawMonitorExit, jvmti, frameLock)))
324 return NSK_FALSE;
325
326 return result;
327 }
328
329 /* ========================================================================== */
330
331 /* agent library initialization */
332 #ifdef STATIC_BUILD
333 JNIEXPORT jint JNICALL Agent_OnLoad_sp07t001(JavaVM *jvm, char *options, void *reserved) {
334 return Agent_Initialize(jvm, options, reserved);
335 }
336 JNIEXPORT jint JNICALL Agent_OnAttach_sp07t001(JavaVM *jvm, char *options, void *reserved) {
337 return Agent_Initialize(jvm, options, reserved);
338 }
339 JNIEXPORT jint JNI_OnLoad_sp07t001(JavaVM *jvm, char *options, void *reserved) {
340 return JNI_VERSION_1_8;
341 }
342 #endif
343 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
344 jvmtiEnv* jvmti = NULL;
345
346 /* init framework and parse options */
347 if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))
348 return JNI_ERR;
349
350 timeout = nsk_jvmti_getWaitTime() * 60000;
351 NSK_DISPLAY1("Timeout: %d msc\n", (int)timeout);
352
353 /* create JVMTI environment */
354 if (!NSK_VERIFY((jvmti =
355 nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL))
356 return JNI_ERR;
357
358 if (!NSK_JVMTI_VERIFY(
359 NSK_CPP_STUB3(CreateRawMonitor, jvmti, "frameLock", &frameLock)))
360 return NSK_FALSE;
361
362 /* register agent proc and arg */
363 if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL)))
364 return JNI_ERR;
365
366 return JNI_OK;
367 }
368
369 /* ========================================================================== */
370
371 }