1 /*
2 * Copyright (c) 2003, 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 <string.h>
25 #include "jvmti.h"
26 #include "agent_common.h"
27 #include "jni_tools.h"
28 #include "jvmti_tools.h"
29
30 extern "C" {
31
32 /* ============================================================================= */
33
34 /* scaffold objects */
35 static JNIEnv* jni = NULL;
36 static jvmtiEnv *jvmti = NULL;
37 static jlong timeout = 0;
38
39 /* constants */
40 #define THREADS_COUNT 6
41 #define EVENTS_COUNT 2
42 #define MAX_NAME_LENGTH 100
43 #define MAX_STACK_SIZE 100
44
45 /* tested events */
46 static jvmtiEvent eventsList[EVENTS_COUNT] = {
47 JVMTI_EVENT_COMPILED_METHOD_LOAD,
48 JVMTI_EVENT_COMPILED_METHOD_UNLOAD
49 };
50
51 /* thread description structure */
52 typedef struct {
53 char threadName[MAX_NAME_LENGTH];
54 char methodName[MAX_NAME_LENGTH];
55 char methodSig[MAX_NAME_LENGTH];
56 jthread thread;
57 jclass cls;
58 jmethodID method;
59 jlocation location;
60 int methodCompiled;
61 } ThreadDesc;
62
63 /* descriptions of tested threads */
64 static ThreadDesc threadsDesc[THREADS_COUNT] = {
65 {"threadRunning", "testedMethod", "(ZI)V", NULL, NULL, NULL, NSK_JVMTI_INVALID_JLOCATION, NSK_FALSE},
66 {"threadEntering", "testedMethod", "(ZI)V", NULL, NULL, NULL, NSK_JVMTI_INVALID_JLOCATION, NSK_FALSE},
67 {"threadWaiting", "testedMethod", "(ZI)V", NULL, NULL, NULL, NSK_JVMTI_INVALID_JLOCATION, NSK_FALSE},
68 {"threadSleeping", "testedMethod", "(ZI)V", NULL, NULL, NULL, NSK_JVMTI_INVALID_JLOCATION, NSK_FALSE},
69 {"threadRunningInterrupted", "testedMethod", "(ZI)V", NULL, NULL, NULL, NSK_JVMTI_INVALID_JLOCATION, NSK_FALSE},
70 {"threadRunningNative", "testedMethod", "(ZI)V", NULL, NULL, NULL, NSK_JVMTI_INVALID_JLOCATION, NSK_FALSE}
71 };
72
73 /* indexes of known threads */
74 static const int interruptedThreadIndex = THREADS_COUNT - 2;
75 static const int nativeThreadIndex = THREADS_COUNT - 1;
76
77 /* ============================================================================= */
78
79 /* testcase(s) */
80 static int prepare();
81 static int generateEvents();
82 static int checkThreads(int suspended, const char* kind);
83 static int suspendThreadsIndividually(int suspend);
84 static int clean();
85
86 /* ============================================================================= */
87
88 /** Agent algorithm. */
89 static void JNICALL
90 agentProc(jvmtiEnv* jvmti, JNIEnv* agentJNI, void* arg) {
91 jni = agentJNI;
92
93 NSK_DISPLAY0("Wait for debuggee to become ready\n");
94 if (!nsk_jvmti_waitForSync(timeout))
95 return;
96
97 {
98 NSK_DISPLAY0("Prepare data\n");
99 if (!prepare()) {
100 nsk_jvmti_setFailStatus();
101 return;
102 }
103
104 NSK_DISPLAY0("Generate missed events\n");
105 if (!generateEvents())
106 return;
107
108 NSK_DISPLAY0("Testcase #1: check stack frames of not suspended threads\n");
109 if (!checkThreads(NSK_FALSE, "not suspended"))
110 return;
111
112 NSK_DISPLAY0("Suspend each thread\n");
113 if (!suspendThreadsIndividually(NSK_TRUE))
114 return;
115
116 NSK_DISPLAY0("Testcase #2: check stack frames of suspended threads\n");
117 if (!checkThreads(NSK_TRUE, "suspended"))
118 return;
119
120 NSK_DISPLAY0("Resume each thread\n");
121 if (!suspendThreadsIndividually(NSK_FALSE))
122 return;
123
124 NSK_DISPLAY0("Testcase #3: check stack frames of resumed threads\n");
125 if (!checkThreads(NSK_FALSE, "resumed"))
126 return;
127
128 NSK_DISPLAY0("Clean data\n");
129 if (!clean()) {
130 nsk_jvmti_setFailStatus();
131 return;
132 }
133 }
134
135 NSK_DISPLAY0("Let debuggee to finish\n");
136 if (!nsk_jvmti_resumeSync())
137 return;
138 }
139
140 /* ============================================================================= */
141
142 /**
143 * Generate missed events (COMPILED_METHOD_LOAD only).
144 */
145 static int generateEvents() {
146 if (!NSK_JVMTI_VERIFY(
147 NSK_CPP_STUB2(GenerateEvents, jvmti, JVMTI_EVENT_COMPILED_METHOD_LOAD))) {
148 nsk_jvmti_setFailStatus();
149 return NSK_FALSE;
150 }
151 return NSK_TRUE;
152 }
153
154 /**
155 * Prepare data.
156 * - clean threads list
157 * - get all live threads
158 * - get threads name
159 * - find tested threads
160 * - make global refs
161 * - enable events
162 */
163 static int prepare() {
164 jthread *allThreadsList = NULL;
165 jint allThreadsCount = 0;
166 int found = 0;
167 int i;
168
169 NSK_DISPLAY1("Find tested threads: %d\n", THREADS_COUNT);
170
171 /* clean threads list */
172 for (i = 0; i < THREADS_COUNT; i++) {
173 threadsDesc[i].thread = (jthread)NULL;
174 threadsDesc[i].method = (jmethodID)NULL;
175 threadsDesc[i].location = NSK_JVMTI_INVALID_JLOCATION;
176 threadsDesc[i].methodCompiled = NSK_FALSE;
177 }
178
179 /* get all live threads */
180 if (!NSK_JVMTI_VERIFY(
181 NSK_CPP_STUB3(GetAllThreads, jvmti, &allThreadsCount, &allThreadsList)))
182 return NSK_FALSE;
183
184 if (!NSK_VERIFY(allThreadsCount > 0 && allThreadsList != NULL))
185 return NSK_FALSE;
186
187 /* find tested threads */
188 for (i = 0; i < allThreadsCount; i++) {
189 jvmtiThreadInfo threadInfo;
190
191 if (!NSK_VERIFY(allThreadsList[i] != NULL))
192 return NSK_FALSE;
193
194 if (!NSK_JVMTI_VERIFY(
195 NSK_CPP_STUB3(GetThreadInfo, jvmti, allThreadsList[i], &threadInfo)))
196 return NSK_FALSE;
197
198 if (threadInfo.name != NULL) {
199 int j;
200
201 for (j = 0; j < THREADS_COUNT; j++) {
202 if (strcmp(threadInfo.name, threadsDesc[j].threadName) == 0) {
203 threadsDesc[j].thread = allThreadsList[i];
204 NSK_DISPLAY3(" thread #%d (%s): 0x%p\n",
205 j, threadInfo.name, (void*)threadsDesc[j].thread);
206 }
207 }
208 }
209 }
210
211 /* deallocate all threads list */
212 if (!NSK_JVMTI_VERIFY(
213 NSK_CPP_STUB2(Deallocate, jvmti, (unsigned char*)allThreadsList)))
214 return NSK_FALSE;
215
216 /* check if all tested threads found */
217 found = 0;
218 for (i = 0; i < THREADS_COUNT; i++) {
219 if (threadsDesc[i].thread == NULL) {
220 NSK_COMPLAIN2("Not found tested thread #%d (%s)\n", i, threadsDesc[i].threadName);
221 } else {
222 found++;
223 }
224 }
225
226 if (found < THREADS_COUNT)
227 return NSK_FALSE;
228
229 /* get threads class and frame method */
230 NSK_DISPLAY0("Find tested methods:\n");
231 for (i = 0; i < THREADS_COUNT; i++) {
232
233 if (!NSK_JNI_VERIFY(jni, (threadsDesc[i].cls =
234 NSK_CPP_STUB2(GetObjectClass, jni, threadsDesc[i].thread)) != NULL))
235 return NSK_FALSE;
236
237 if (!NSK_JNI_VERIFY(jni, (threadsDesc[i].method =
238 NSK_CPP_STUB4(GetMethodID, jni, threadsDesc[i].cls,
239 threadsDesc[i].methodName, threadsDesc[i].methodSig)) != NULL))
240 return NSK_FALSE;
241
242 NSK_DISPLAY4(" thread #%d (%s): 0x%p (%s)\n",
243 i, threadsDesc[i].threadName,
244 (void*)threadsDesc[i].method,
245 threadsDesc[i].methodName);
246 }
247
248 /* make global refs */
249 for (i = 0; i < THREADS_COUNT; i++) {
250 if (!NSK_JNI_VERIFY(jni, (threadsDesc[i].thread = (jthread)
251 NSK_CPP_STUB2(NewGlobalRef, jni, threadsDesc[i].thread)) != NULL))
252 return NSK_FALSE;
253 if (!NSK_JNI_VERIFY(jni, (threadsDesc[i].cls = (jclass)
254 NSK_CPP_STUB2(NewGlobalRef, jni, threadsDesc[i].cls)) != NULL))
255 return NSK_FALSE;
256 }
257
258 NSK_DISPLAY0("Enable tested events\n");
259 if (!nsk_jvmti_enableEvents(JVMTI_ENABLE, EVENTS_COUNT, eventsList, NULL))
260 return NSK_FALSE;
261
262 return NSK_TRUE;
263 }
264
265 /**
266 * Suspend or resume tested threads.
267 */
268 static int suspendThreadsIndividually(int suspend) {
269 int i;
270
271 for (i = 0; i < THREADS_COUNT; i++) {
272 if (suspend) {
273 NSK_DISPLAY2(" suspend thread #%d (%s)\n", i, threadsDesc[i].threadName);
274 if (!NSK_JVMTI_VERIFY(
275 NSK_CPP_STUB2(SuspendThread, jvmti, threadsDesc[i].thread)))
276 nsk_jvmti_setFailStatus();
277 } else {
278 NSK_DISPLAY2(" resume thread #%d (%s)\n", i, threadsDesc[i].threadName);
279 if (!NSK_JVMTI_VERIFY(
280 NSK_CPP_STUB2(ResumeThread, jvmti, threadsDesc[i].thread)))
281 nsk_jvmti_setFailStatus();
282 }
283 }
284 return NSK_TRUE;
285 }
286
287 /**
288 * Testcase: check tested threads.
289 * - call GetFrameCount() and getStackTrace()
290 * - for suspended thread compare number of stack frames returned
291 * - find stack frames with expected methodID
292 *
293 * Returns NSK_TRUE if test may continue; or NSK_FALSE for test break.
294 */
295 static int checkThreads(int suspended, const char* kind0) {
296 char kind[256] = "";
297 int i;
298
299 /* check each thread */
300 for (i = 0; i < THREADS_COUNT; i++) {
301 jint frameCount = 0;
302 jint frameStackSize = 0;
303 jvmtiFrameInfo frameStack[MAX_STACK_SIZE];
304 int found = 0;
305 int j;
306
307 /* make proper kind */
308 strcpy(kind, threadsDesc[i].methodCompiled ? "compiled " : "not compiled ");
309 strcat(kind, kind0);
310 NSK_DISPLAY2(" thread #%d (%s):\n", i, threadsDesc[i].threadName);
311
312 /* get frame count */
313 if (!NSK_JVMTI_VERIFY(
314 NSK_CPP_STUB3(GetFrameCount, jvmti,
315 threadsDesc[i].thread, &frameCount))) {
316 nsk_jvmti_setFailStatus();
317 return NSK_TRUE;
318 }
319
320 NSK_DISPLAY1(" frameCount: %d\n", (int)frameCount);
321
322 /* get stack trace */
323 if (!NSK_JVMTI_VERIFY(
324 NSK_CPP_STUB6(GetStackTrace, jvmti, threadsDesc[i].thread,
325 0, MAX_STACK_SIZE, frameStack, &frameStackSize))) {
326 nsk_jvmti_setFailStatus();
327 return NSK_TRUE;
328 }
329
330 NSK_DISPLAY1(" stack depth: %d\n", (int)frameStackSize);
331
332 /* Only check for suspended threads: running threads might have different
333 frames between stack grabbing calls. */
334 if (suspended && (frameStackSize != frameCount)) {
335 NSK_COMPLAIN5("Different frames count for %s thread #%d (%s):\n"
336 "# getStackTrace(): %d\n"
337 "# getFrameCount(): %d\n",
338 kind, i, threadsDesc[i].threadName,
339 (int)frameStackSize, (int)frameCount);
340 nsk_jvmti_setFailStatus();
341 }
342
343 /* find method on the stack */
344 found = 0;
345 for (j = 0; j < frameStackSize; j++) {
346 NSK_DISPLAY3(" %d: methodID: 0x%p, location: %ld\n",
347 j, (void*)frameStack[j].method,
348 (long)frameStack[j].location);
349 /* check frame method */
350 if (frameStack[j].method == NULL) {
351 NSK_COMPLAIN3("NULL methodID in stack for %s thread #%d (%s)\n",
352 kind, i, threadsDesc[i].threadName);
353 nsk_jvmti_setFailStatus();
354 } else if (frameStack[j].method == threadsDesc[i].method) {
355 found++;
356 NSK_DISPLAY1(" found expected method: %s\n",
357 (void*)threadsDesc[i].methodName);
358 }
359 }
360
361 /* check if expected method found */
362 if (found != 1) {
363 NSK_COMPLAIN5("Unexpected method frames on stack for %s thread #%d (%s):\n"
364 "# found frames: %d\n"
365 "# expected: %d\n",
366 kind, i, threadsDesc[i].threadName,
367 found, 1);
368 nsk_jvmti_setFailStatus();
369 }
370 }
371
372 /* test may continue */
373 return NSK_TRUE;
374 }
375
376 /**
377 * Clean data.
378 * - disable events
379 * - dispose global references to tested threads
380 */
381 static int clean() {
382 int i;
383
384 NSK_DISPLAY0("Disable events\n");
385 if (!nsk_jvmti_enableEvents(JVMTI_DISABLE, EVENTS_COUNT, eventsList, NULL))
386 return NSK_FALSE;
387
388 NSK_DISPLAY0("Dispose global references to threads\n");
389 for (i = 0; i < THREADS_COUNT; i++) {
390 NSK_TRACE(NSK_CPP_STUB2(DeleteGlobalRef, jni, threadsDesc[i].thread));
391 NSK_TRACE(NSK_CPP_STUB2(DeleteGlobalRef, jni, threadsDesc[i].cls));
392 }
393
394 return NSK_TRUE;
395 }
396
397 /* ============================================================================= */
398
399 /**
400 * COMPILED_METHOD_LOAD callback.
401 * - turn on flag that method is compiled
402 */
403 JNIEXPORT void JNICALL
404 callbackCompiledMethodLoad(jvmtiEnv* jvmti, jmethodID method,
405 jint code_size, const void* code_addr,
406 jint map_length, const jvmtiAddrLocationMap* map,
407 const void* compile_info) {
408 int i;
409
410 /* check if event is for tested method and turn flag on */
411 for (i = 0; i < THREADS_COUNT; i++) {
412 if (threadsDesc[i].method == method) {
413 threadsDesc[i].methodCompiled = NSK_TRUE;
414
415 NSK_DISPLAY2(" COMPILED_METHOD_LOAD for method #%d (%s):\n",
416 i, threadsDesc[i].methodName);
417 NSK_DISPLAY1(" methodID: 0x%p\n",
418 (void*)threadsDesc[i].method);
419 NSK_DISPLAY1(" code_size: %d\n",
420 (int)code_size);
421 NSK_DISPLAY1(" map_length: %d\n",
422 (int)map_length);
423 break;
424 }
425 }
426 }
427
428 /**
429 * COMPILED_METHOD_UNLOAD callback.
430 * - turn off flag that method is compiled
431 */
432 JNIEXPORT void JNICALL
433 callbackCompiledMethodUnload(jvmtiEnv* jvmti, jmethodID method,
434 const void* code_addr) {
435 int i;
436
437 /* check if event is for tested method and turn flag off */
438 for (i = 0; i < THREADS_COUNT; i++) {
439 if (threadsDesc[i].method == method) {
440 threadsDesc[i].methodCompiled = NSK_FALSE;
441
442 NSK_DISPLAY2(" COMPILED_METHOD_UNLOAD for method #%d (%s):\n",
443 i, threadsDesc[i].methodName);
444 NSK_DISPLAY1(" methodID: 0x%p\n",
445 (void*)threadsDesc[i].method);
446 break;
447 }
448 }
449 }
450
451 /* ============================================================================= */
452
453 volatile int testedThreadReady = NSK_FALSE;
454 volatile int testedThreadShouldFinish = NSK_FALSE;
455
456 /** Native running method in tested thread. */
457 JNIEXPORT void JNICALL
458 Java_nsk_jvmti_scenarios_sampling_SP06_sp06t002ThreadRunningNative_testedMethod(JNIEnv* jni,
459 jobject obj,
460 jboolean simulate,
461 jint i) {
462 if (!simulate) {
463 volatile int k = 0, n = 1000;
464
465 /* run in a continous loop */
466 testedThreadReady = NSK_TRUE;
467 while (!testedThreadShouldFinish) {
468 if (n <= 0)
469 n = 1000;
470 if (k >= n)
471 k = 0;
472 k++;
473 }
474 }
475 }
476
477 /* Wait for native method is running. */
478 JNIEXPORT jboolean JNICALL
479 Java_nsk_jvmti_scenarios_sampling_SP06_sp06t002ThreadRunningNative_checkReady(JNIEnv* jni,
480 jobject obj) {
481 while (!testedThreadReady) {
482 nsk_jvmti_sleep(1000);
483 }
484 return testedThreadReady ? JNI_TRUE : JNI_FALSE;
485 }
486
487 /** Let native method to finish. */
488 JNIEXPORT void JNICALL
489 Java_nsk_jvmti_scenarios_sampling_SP06_sp06t002ThreadRunningNative_letFinish(JNIEnv* jni,
490 jobject obj) {
491 testedThreadShouldFinish = NSK_TRUE;
492 }
493
494 /* ============================================================================= */
495
496 /** Agent library initialization. */
497 #ifdef STATIC_BUILD
498 JNIEXPORT jint JNICALL Agent_OnLoad_sp06t002(JavaVM *jvm, char *options, void *reserved) {
499 return Agent_Initialize(jvm, options, reserved);
500 }
501 JNIEXPORT jint JNICALL Agent_OnAttach_sp06t002(JavaVM *jvm, char *options, void *reserved) {
502 return Agent_Initialize(jvm, options, reserved);
503 }
504 JNIEXPORT jint JNI_OnLoad_sp06t002(JavaVM *jvm, char *options, void *reserved) {
505 return JNI_VERSION_1_8;
506 }
507 #endif
508 jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
509
510 if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))
511 return JNI_ERR;
512
513 timeout = nsk_jvmti_getWaitTime() * 60 * 1000;
514
515 if (!NSK_VERIFY((jvmti =
516 nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL))
517 return JNI_ERR;
518
519 {
520 jvmtiCapabilities caps;
521 memset(&caps, 0, sizeof(caps));
522 caps.can_suspend = 1;
523 caps.can_generate_compiled_method_load_events = 1;
524 if (!NSK_JVMTI_VERIFY(
525 NSK_CPP_STUB2(AddCapabilities, jvmti, &caps)))
526 return JNI_ERR;
527 }
528
529 {
530 jvmtiEventCallbacks eventCallbacks;
531 memset(&eventCallbacks, 0, sizeof(eventCallbacks));
532 eventCallbacks.CompiledMethodLoad = callbackCompiledMethodLoad;
533 eventCallbacks.CompiledMethodUnload = callbackCompiledMethodUnload;
534 if (!NSK_JVMTI_VERIFY(
535 NSK_CPP_STUB3(SetEventCallbacks, jvmti,
536 &eventCallbacks, sizeof(eventCallbacks))))
537 return JNI_ERR;
538 }
539
540 if (!NSK_VERIFY(nsk_jvmti_setAgentProc(agentProc, NULL)))
541 return JNI_ERR;
542
543 return JNI_OK;
544 }
545
546 /* ============================================================================= */
547
548 }