1 /*
2 * Copyright (c) 1998, 2016, 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 #include <ctype.h>
27
28 #include "util.h"
29 #include "transport.h"
30 #include "eventHandler.h"
31 #include "threadControl.h"
32 #include "outStream.h"
33 #include "inStream.h"
34 #include "invoker.h"
35
36 /* Global data area */
37 BackendGlobalData *gdata = NULL;
38
39 /* Forward declarations */
40 static jboolean isInterface(jclass clazz);
41 static jboolean isArrayClass(jclass clazz);
42 static char * getPropertyUTF8(JNIEnv *env, char *propertyName);
43
44 /* Save an object reference for use later (create a NewGlobalRef) */
45 void
46 saveGlobalRef(JNIEnv *env, jobject obj, jobject *pobj)
47 {
48 jobject newobj;
49
50 if ( pobj == NULL ) {
51 EXIT_ERROR(AGENT_ERROR_ILLEGAL_ARGUMENT,"saveGlobalRef pobj");
52 }
53 if ( *pobj != NULL ) {
54 EXIT_ERROR(AGENT_ERROR_ILLEGAL_ARGUMENT,"saveGlobalRef *pobj");
55 }
56 if ( env == NULL ) {
57 EXIT_ERROR(AGENT_ERROR_ILLEGAL_ARGUMENT,"saveGlobalRef env");
58 }
59 if ( obj == NULL ) {
60 EXIT_ERROR(AGENT_ERROR_ILLEGAL_ARGUMENT,"saveGlobalRef obj");
61 }
62 newobj = JNI_FUNC_PTR(env,NewGlobalRef)(env, obj);
63 if ( newobj == NULL ) {
64 EXIT_ERROR(AGENT_ERROR_NULL_POINTER,"NewGlobalRef");
65 }
66 *pobj = newobj;
67 }
68
69 /* Toss a previously saved object reference */
70 void
71 tossGlobalRef(JNIEnv *env, jobject *pobj)
72 {
73 jobject obj;
74
75 if ( pobj == NULL ) {
76 EXIT_ERROR(AGENT_ERROR_ILLEGAL_ARGUMENT,"tossGlobalRef pobj");
77 }
78 obj = *pobj;
79 if ( env == NULL ) {
80 EXIT_ERROR(AGENT_ERROR_ILLEGAL_ARGUMENT,"tossGlobalRef env");
81 }
82 if ( obj == NULL ) {
83 EXIT_ERROR(AGENT_ERROR_NULL_POINTER,"tossGlobalRef obj");
84 }
85 JNI_FUNC_PTR(env,DeleteGlobalRef)(env, obj);
86 *pobj = NULL;
87 }
88
89 jclass
90 findClass(JNIEnv *env, const char * name)
91 {
92 jclass x;
93
94 if ( env == NULL ) {
95 EXIT_ERROR(AGENT_ERROR_ILLEGAL_ARGUMENT,"findClass env");
96 }
97 if ( name == NULL || name[0] == 0 ) {
98 EXIT_ERROR(AGENT_ERROR_ILLEGAL_ARGUMENT,"findClass name");
99 }
100 x = JNI_FUNC_PTR(env,FindClass)(env, name);
101 if (x == NULL) {
102 ERROR_MESSAGE(("JDWP Can't find class %s", name));
103 EXIT_ERROR(AGENT_ERROR_NULL_POINTER,NULL);
104 }
105 if ( JNI_FUNC_PTR(env,ExceptionOccurred)(env) ) {
106 ERROR_MESSAGE(("JDWP Exception occurred finding class %s", name));
107 EXIT_ERROR(AGENT_ERROR_NULL_POINTER,NULL);
108 }
109 return x;
110 }
111
112 jmethodID
113 getMethod(JNIEnv *env, jclass clazz, const char * name, const char *signature)
114 {
115 jmethodID method;
116
117 if ( env == NULL ) {
118 EXIT_ERROR(AGENT_ERROR_ILLEGAL_ARGUMENT,"getMethod env");
119 }
120 if ( clazz == NULL ) {
121 EXIT_ERROR(AGENT_ERROR_ILLEGAL_ARGUMENT,"getMethod clazz");
122 }
123 if ( name == NULL || name[0] == 0 ) {
124 EXIT_ERROR(AGENT_ERROR_ILLEGAL_ARGUMENT,"getMethod name");
125 }
126 if ( signature == NULL || signature[0] == 0 ) {
127 EXIT_ERROR(AGENT_ERROR_ILLEGAL_ARGUMENT,"getMethod signature");
128 }
129 method = JNI_FUNC_PTR(env,GetMethodID)(env, clazz, name, signature);
130 if (method == NULL) {
131 ERROR_MESSAGE(("JDWP Can't find method %s with signature %s",
132 name, signature));
133 EXIT_ERROR(AGENT_ERROR_NULL_POINTER,NULL);
134 }
135 if ( JNI_FUNC_PTR(env,ExceptionOccurred)(env) ) {
136 ERROR_MESSAGE(("JDWP Exception occurred finding method %s with signature %s",
137 name, signature));
138 EXIT_ERROR(AGENT_ERROR_NULL_POINTER,NULL);
139 }
140 return method;
141 }
142
143 static jmethodID
144 getStaticMethod(JNIEnv *env, jclass clazz, const char * name, const char *signature)
145 {
146 jmethodID method;
147
148 if ( env == NULL ) {
149 EXIT_ERROR(AGENT_ERROR_ILLEGAL_ARGUMENT,"getStaticMethod env");
150 }
151 if ( clazz == NULL ) {
152 EXIT_ERROR(AGENT_ERROR_ILLEGAL_ARGUMENT,"getStaticMethod clazz");
153 }
154 if ( name == NULL || name[0] == 0 ) {
155 EXIT_ERROR(AGENT_ERROR_ILLEGAL_ARGUMENT,"getStaticMethod name");
156 }
157 if ( signature == NULL || signature[0] == 0 ) {
158 EXIT_ERROR(AGENT_ERROR_ILLEGAL_ARGUMENT,"getStaticMethod signature");
159 }
160 method = JNI_FUNC_PTR(env,GetStaticMethodID)(env, clazz, name, signature);
161 if (method == NULL) {
162 ERROR_MESSAGE(("JDWP Can't find method %s with signature %s",
163 name, signature));
164 EXIT_ERROR(AGENT_ERROR_NULL_POINTER,NULL);
165 }
166 if ( JNI_FUNC_PTR(env,ExceptionOccurred)(env) ) {
167 ERROR_MESSAGE(("JDWP Exception occurred finding method %s with signature %s",
168 name, signature));
169 EXIT_ERROR(AGENT_ERROR_NULL_POINTER,NULL);
170 }
171 return method;
172 }
173
174 void
175 util_initialize(JNIEnv *env)
176 {
177 WITH_LOCAL_REFS(env, 6) {
178
179 jvmtiError error;
180 jclass localClassClass;
181 jclass localThreadClass;
182 jclass localThreadGroupClass;
183 jclass localClassLoaderClass;
184 jclass localStringClass;
185 jclass localSystemClass;
186 jclass localPropertiesClass;
187 jclass localVMSupportClass;
188 jobject localAgentProperties;
189 jmethodID getAgentProperties;
190 jint groupCount;
191 jthreadGroup *groups;
192 jthreadGroup localSystemThreadGroup;
193
194 /* Find some standard classes */
195
196 localClassClass = findClass(env,"java/lang/Class");
197 localThreadClass = findClass(env,"java/lang/Thread");
198 localThreadGroupClass = findClass(env,"java/lang/ThreadGroup");
199 localClassLoaderClass = findClass(env,"java/lang/ClassLoader");
200 localStringClass = findClass(env,"java/lang/String");
201 localSystemClass = findClass(env,"java/lang/System");
202 localPropertiesClass = findClass(env,"java/util/Properties");
203
204 /* Save references */
205
206 saveGlobalRef(env, localClassClass, &(gdata->classClass));
207 saveGlobalRef(env, localThreadClass, &(gdata->threadClass));
208 saveGlobalRef(env, localThreadGroupClass, &(gdata->threadGroupClass));
209 saveGlobalRef(env, localClassLoaderClass, &(gdata->classLoaderClass));
210 saveGlobalRef(env, localStringClass, &(gdata->stringClass));
211 saveGlobalRef(env, localSystemClass, &(gdata->systemClass));
212
213 /* Find some standard methods */
214
215 gdata->threadConstructor =
216 getMethod(env, gdata->threadClass,
217 "<init>", "(Ljava/lang/ThreadGroup;Ljava/lang/String;)V");
218 gdata->threadSetDaemon =
219 getMethod(env, gdata->threadClass, "setDaemon", "(Z)V");
220 gdata->threadResume =
221 getMethod(env, gdata->threadClass, "resume", "()V");
222 gdata->systemGetProperty =
223 getStaticMethod(env, gdata->systemClass,
224 "getProperty", "(Ljava/lang/String;)Ljava/lang/String;");
225 gdata->setProperty =
226 getMethod(env, localPropertiesClass,
227 "setProperty", "(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/Object;");
228
229 /* Find the system thread group */
230
231 groups = NULL;
232 groupCount = 0;
233 error = JVMTI_FUNC_PTR(gdata->jvmti,GetTopThreadGroups)
234 (gdata->jvmti, &groupCount, &groups);
235 if (error != JVMTI_ERROR_NONE ) {
236 EXIT_ERROR(error, "Can't get system thread group");
237 }
238 if ( groupCount == 0 ) {
239 EXIT_ERROR(AGENT_ERROR_NULL_POINTER, "Can't get system thread group");
240 }
241 localSystemThreadGroup = groups[0];
242 saveGlobalRef(env, localSystemThreadGroup, &(gdata->systemThreadGroup));
243
244 /* Get some basic Java property values we will need at some point */
245 gdata->property_java_version
246 = getPropertyUTF8(env, "java.version");
247 gdata->property_java_vm_name
248 = getPropertyUTF8(env, "java.vm.name");
249 gdata->property_java_vm_info
250 = getPropertyUTF8(env, "java.vm.info");
251 gdata->property_java_class_path
252 = getPropertyUTF8(env, "java.class.path");
253 gdata->property_sun_boot_library_path
254 = getPropertyUTF8(env, "sun.boot.library.path");
255 gdata->property_path_separator
256 = getPropertyUTF8(env, "path.separator");
257 gdata->property_user_dir
258 = getPropertyUTF8(env, "user.dir");
259
260 /* Get agent properties: invoke VMSupport.getAgentProperties */
261 localVMSupportClass = JNI_FUNC_PTR(env,FindClass)
262 (env, "jdk/internal/vm/VMSupport");
263 if (localVMSupportClass == NULL) {
264 gdata->agent_properties = NULL;
265 if (JNI_FUNC_PTR(env,ExceptionOccurred)(env)) {
266 JNI_FUNC_PTR(env,ExceptionClear)(env);
267 }
268 } else {
269 getAgentProperties =
270 getStaticMethod(env, localVMSupportClass,
271 "getAgentProperties", "()Ljava/util/Properties;");
272 localAgentProperties =
273 JNI_FUNC_PTR(env,CallStaticObjectMethod)
274 (env, localVMSupportClass, getAgentProperties);
275 saveGlobalRef(env, localAgentProperties, &(gdata->agent_properties));
276 if (JNI_FUNC_PTR(env,ExceptionOccurred)(env)) {
277 JNI_FUNC_PTR(env,ExceptionClear)(env);
278 EXIT_ERROR(AGENT_ERROR_INTERNAL,
279 "Exception occurred calling VMSupport.getAgentProperties");
280 }
281 }
282
283 } END_WITH_LOCAL_REFS(env);
284
285 }
286
287 void
288 util_reset(void)
289 {
290 }
291
292 jboolean
293 isObjectTag(jbyte tag) {
294 return (tag == JDWP_TAG(OBJECT)) ||
295 (tag == JDWP_TAG(STRING)) ||
296 (tag == JDWP_TAG(THREAD)) ||
297 (tag == JDWP_TAG(THREAD_GROUP)) ||
298 (tag == JDWP_TAG(CLASS_LOADER)) ||
299 (tag == JDWP_TAG(CLASS_OBJECT)) ||
300 (tag == JDWP_TAG(ARRAY));
301 }
302
303 jbyte
304 specificTypeKey(JNIEnv *env, jobject object)
305 {
306 if (object == NULL) {
307 return JDWP_TAG(OBJECT);
308 } else if (JNI_FUNC_PTR(env,IsInstanceOf)(env, object, gdata->stringClass)) {
309 return JDWP_TAG(STRING);
310 } else if (JNI_FUNC_PTR(env,IsInstanceOf)(env, object, gdata->threadClass)) {
311 return JDWP_TAG(THREAD);
312 } else if (JNI_FUNC_PTR(env,IsInstanceOf)(env, object, gdata->threadGroupClass)) {
313 return JDWP_TAG(THREAD_GROUP);
314 } else if (JNI_FUNC_PTR(env,IsInstanceOf)(env, object, gdata->classLoaderClass)) {
315 return JDWP_TAG(CLASS_LOADER);
316 } else if (JNI_FUNC_PTR(env,IsInstanceOf)(env, object, gdata->classClass)) {
317 return JDWP_TAG(CLASS_OBJECT);
318 } else {
319 jboolean classIsArray;
320
321 WITH_LOCAL_REFS(env, 1) {
322 jclass clazz;
323 clazz = JNI_FUNC_PTR(env,GetObjectClass)(env, object);
324 classIsArray = isArrayClass(clazz);
325 } END_WITH_LOCAL_REFS(env);
326
327 return (classIsArray ? JDWP_TAG(ARRAY) : JDWP_TAG(OBJECT));
328 }
329 }
330
331 static void
332 writeFieldValue(JNIEnv *env, PacketOutputStream *out, jobject object,
333 jfieldID field)
334 {
335 jclass clazz;
336 char *signature = NULL;
337 jvmtiError error;
338 jbyte typeKey;
339
340 clazz = JNI_FUNC_PTR(env,GetObjectClass)(env, object);
341 error = fieldSignature(clazz, field, NULL, &signature, NULL);
342 if (error != JVMTI_ERROR_NONE) {
343 outStream_setError(out, map2jdwpError(error));
344 return;
345 }
346 typeKey = signature[0];
347 jvmtiDeallocate(signature);
348
349 /*
350 * For primitive types, the type key is bounced back as is. Objects
351 * are handled in the switch statement below.
352 */
353 if ((typeKey != JDWP_TAG(OBJECT)) && (typeKey != JDWP_TAG(ARRAY))) {
354 (void)outStream_writeByte(out, typeKey);
355 }
356
357 switch (typeKey) {
358 case JDWP_TAG(OBJECT):
359 case JDWP_TAG(ARRAY): {
360 jobject value = JNI_FUNC_PTR(env,GetObjectField)(env, object, field);
361 (void)outStream_writeByte(out, specificTypeKey(env, value));
362 (void)outStream_writeObjectRef(env, out, value);
363 break;
364 }
365
366 case JDWP_TAG(BYTE):
367 (void)outStream_writeByte(out,
368 JNI_FUNC_PTR(env,GetByteField)(env, object, field));
369 break;
370
371 case JDWP_TAG(CHAR):
372 (void)outStream_writeChar(out,
373 JNI_FUNC_PTR(env,GetCharField)(env, object, field));
374 break;
375
376 case JDWP_TAG(FLOAT):
377 (void)outStream_writeFloat(out,
378 JNI_FUNC_PTR(env,GetFloatField)(env, object, field));
379 break;
380
381 case JDWP_TAG(DOUBLE):
382 (void)outStream_writeDouble(out,
383 JNI_FUNC_PTR(env,GetDoubleField)(env, object, field));
384 break;
385
386 case JDWP_TAG(INT):
387 (void)outStream_writeInt(out,
388 JNI_FUNC_PTR(env,GetIntField)(env, object, field));
389 break;
390
391 case JDWP_TAG(LONG):
392 (void)outStream_writeLong(out,
393 JNI_FUNC_PTR(env,GetLongField)(env, object, field));
394 break;
395
396 case JDWP_TAG(SHORT):
397 (void)outStream_writeShort(out,
398 JNI_FUNC_PTR(env,GetShortField)(env, object, field));
399 break;
400
401 case JDWP_TAG(BOOLEAN):
402 (void)outStream_writeBoolean(out,
403 JNI_FUNC_PTR(env,GetBooleanField)(env, object, field));
404 break;
405 }
406 }
407
408 static void
409 writeStaticFieldValue(JNIEnv *env, PacketOutputStream *out, jclass clazz,
410 jfieldID field)
411 {
412 jvmtiError error;
413 char *signature = NULL;
414 jbyte typeKey;
415
416 error = fieldSignature(clazz, field, NULL, &signature, NULL);
417 if (error != JVMTI_ERROR_NONE) {
418 outStream_setError(out, map2jdwpError(error));
419 return;
420 }
421 typeKey = signature[0];
422 jvmtiDeallocate(signature);
423
424 /*
425 * For primitive types, the type key is bounced back as is. Objects
426 * are handled in the switch statement below.
427 */
428 if ((typeKey != JDWP_TAG(OBJECT)) && (typeKey != JDWP_TAG(ARRAY))) {
429 (void)outStream_writeByte(out, typeKey);
430 }
431
432 switch (typeKey) {
433 case JDWP_TAG(OBJECT):
434 case JDWP_TAG(ARRAY): {
435 jobject value = JNI_FUNC_PTR(env,GetStaticObjectField)(env, clazz, field);
436 (void)outStream_writeByte(out, specificTypeKey(env, value));
437 (void)outStream_writeObjectRef(env, out, value);
438 break;
439 }
440
441 case JDWP_TAG(BYTE):
442 (void)outStream_writeByte(out,
443 JNI_FUNC_PTR(env,GetStaticByteField)(env, clazz, field));
444 break;
445
446 case JDWP_TAG(CHAR):
447 (void)outStream_writeChar(out,
448 JNI_FUNC_PTR(env,GetStaticCharField)(env, clazz, field));
449 break;
450
451 case JDWP_TAG(FLOAT):
452 (void)outStream_writeFloat(out,
453 JNI_FUNC_PTR(env,GetStaticFloatField)(env, clazz, field));
454 break;
455
456 case JDWP_TAG(DOUBLE):
457 (void)outStream_writeDouble(out,
458 JNI_FUNC_PTR(env,GetStaticDoubleField)(env, clazz, field));
459 break;
460
461 case JDWP_TAG(INT):
462 (void)outStream_writeInt(out,
463 JNI_FUNC_PTR(env,GetStaticIntField)(env, clazz, field));
464 break;
465
466 case JDWP_TAG(LONG):
467 (void)outStream_writeLong(out,
468 JNI_FUNC_PTR(env,GetStaticLongField)(env, clazz, field));
469 break;
470
471 case JDWP_TAG(SHORT):
472 (void)outStream_writeShort(out,
473 JNI_FUNC_PTR(env,GetStaticShortField)(env, clazz, field));
474 break;
475
476 case JDWP_TAG(BOOLEAN):
477 (void)outStream_writeBoolean(out,
478 JNI_FUNC_PTR(env,GetStaticBooleanField)(env, clazz, field));
479 break;
480 }
481 }
482
483 void
484 sharedGetFieldValues(PacketInputStream *in, PacketOutputStream *out,
485 jboolean isStatic)
486 {
487 JNIEnv *env = getEnv();
488 jint length;
489 jobject object;
490 jclass clazz;
491
492 object = NULL;
493 clazz = NULL;
494
495 if (isStatic) {
496 clazz = inStream_readClassRef(env, in);
497 } else {
498 object = inStream_readObjectRef(env, in);
499 }
500
501 length = inStream_readInt(in);
502 if (inStream_error(in)) {
503 return;
504 }
505
506 WITH_LOCAL_REFS(env, length + 1) { /* +1 for class with instance fields */
507
508 int i;
509
510 (void)outStream_writeInt(out, length);
511 for (i = 0; (i < length) && !outStream_error(out); i++) {
512 jfieldID field = inStream_readFieldID(in);
513
514 if (isStatic) {
515 writeStaticFieldValue(env, out, clazz, field);
516 } else {
517 writeFieldValue(env, out, object, field);
518 }
519 }
520
521 } END_WITH_LOCAL_REFS(env);
522 }
523
524 jboolean
525 sharedInvoke(PacketInputStream *in, PacketOutputStream *out)
526 {
527 jvalue *arguments = NULL;
528 jint options;
529 jvmtiError error;
530 jbyte invokeType;
531 jclass clazz;
532 jmethodID method;
533 jint argumentCount;
534 jobject instance;
535 jthread thread;
536 JNIEnv *env;
537
538 /*
539 * Instance methods start with the instance, thread and class,
540 * and statics and constructors start with the class and then the
541 * thread.
542 */
543 env = getEnv();
544 if (inStream_command(in) == JDWP_COMMAND(ObjectReference, InvokeMethod)) {
545 instance = inStream_readObjectRef(env, in);
546 thread = inStream_readThreadRef(env, in);
547 clazz = inStream_readClassRef(env, in);
548 } else { /* static method or constructor */
549 instance = NULL;
550 clazz = inStream_readClassRef(env, in);
551 thread = inStream_readThreadRef(env, in);
552 }
553
554 /*
555 * ... and the rest of the packet is identical for all commands
556 */
557 method = inStream_readMethodID(in);
558 argumentCount = inStream_readInt(in);
559 if (inStream_error(in)) {
560 return JNI_TRUE;
561 }
562
563 /* If count == 0, don't try and allocate 0 bytes, you'll get NULL */
564 if ( argumentCount > 0 ) {
565 int i;
566 /*LINTED*/
567 arguments = jvmtiAllocate(argumentCount * (jint)sizeof(*arguments));
568 if (arguments == NULL) {
569 outStream_setError(out, JDWP_ERROR(OUT_OF_MEMORY));
570 return JNI_TRUE;
571 }
572 for (i = 0; (i < argumentCount) && !inStream_error(in); i++) {
573 arguments[i] = inStream_readValue(in, NULL);
574 }
575 if (inStream_error(in)) {
576 return JNI_TRUE;
577 }
578 }
579
580 options = inStream_readInt(in);
581 if (inStream_error(in)) {
582 if ( arguments != NULL ) {
583 jvmtiDeallocate(arguments);
584 }
585 return JNI_TRUE;
586 }
587
588 if (inStream_command(in) == JDWP_COMMAND(ClassType, NewInstance)) {
589 invokeType = INVOKE_CONSTRUCTOR;
590 } else if (inStream_command(in) == JDWP_COMMAND(ClassType, InvokeMethod)) {
591 invokeType = INVOKE_STATIC;
592 } else if (inStream_command(in) == JDWP_COMMAND(InterfaceType, InvokeMethod)) {
593 invokeType = INVOKE_STATIC;
594 } else if (inStream_command(in) == JDWP_COMMAND(ObjectReference, InvokeMethod)) {
595 invokeType = INVOKE_INSTANCE;
596 } else {
597 outStream_setError(out, JDWP_ERROR(INTERNAL));
598 if ( arguments != NULL ) {
599 jvmtiDeallocate(arguments);
600 }
601 return JNI_TRUE;
602 }
603
604 /*
605 * Request the invoke. If there are no errors in the request,
606 * the interrupting thread will actually do the invoke and a
607 * reply will be generated subsequently, so we don't reply here.
608 */
609 error = invoker_requestInvoke(invokeType, (jbyte)options, inStream_id(in),
610 thread, clazz, method,
611 instance, arguments, argumentCount);
612 if (error != JVMTI_ERROR_NONE) {
613 outStream_setError(out, map2jdwpError(error));
614 if ( arguments != NULL ) {
615 jvmtiDeallocate(arguments);
616 }
617 return JNI_TRUE;
618 }
619
620 return JNI_FALSE; /* Don't reply */
621 }
622
623 jint
624 uniqueID(void)
625 {
626 static jint currentID = 0;
627 return currentID++;
628 }
629
630 int
631 filterDebugThreads(jthread *threads, int count)
632 {
633 int i;
634 int current;
635
636 /* Squish out all of the debugger-spawned threads */
637 for (i = 0, current = 0; i < count; i++) {
638 jthread thread = threads[i];
639 if (!threadControl_isDebugThread(thread)) {
640 if (i > current) {
641 threads[current] = thread;
642 }
643 current++;
644 }
645 }
646 return current;
647 }
648
649 jbyte
650 referenceTypeTag(jclass clazz)
651 {
652 jbyte tag;
653
654 if (isInterface(clazz)) {
655 tag = JDWP_TYPE_TAG(INTERFACE);
656 } else if (isArrayClass(clazz)) {
657 tag = JDWP_TYPE_TAG(ARRAY);
658 } else {
659 tag = JDWP_TYPE_TAG(CLASS);
660 }
661
662 return tag;
663 }
664
665 /**
666 * Get field modifiers
667 */
668 jvmtiError
669 fieldModifiers(jclass clazz, jfieldID field, jint *pmodifiers)
670 {
671 jvmtiError error;
672
673 *pmodifiers = 0;
674 error = JVMTI_FUNC_PTR(gdata->jvmti,GetFieldModifiers)
675 (gdata->jvmti, clazz, field, pmodifiers);
676 return error;
677 }
678
679 /**
680 * Get method modifiers
681 */
682 jvmtiError
683 methodModifiers(jmethodID method, jint *pmodifiers)
684 {
685 jvmtiError error;
686
687 *pmodifiers = 0;
688 error = JVMTI_FUNC_PTR(gdata->jvmti,GetMethodModifiers)
689 (gdata->jvmti, method, pmodifiers);
690 return error;
691 }
692
693 /* Returns a local ref to the declaring class for a method, or NULL. */
694 jvmtiError
695 methodClass(jmethodID method, jclass *pclazz)
696 {
697 jvmtiError error;
698
699 *pclazz = NULL;
700 error = FUNC_PTR(gdata->jvmti,GetMethodDeclaringClass)
701 (gdata->jvmti, method, pclazz);
702 return error;
703 }
704
705 /* Returns a local ref to the declaring class for a method, or NULL. */
706 jvmtiError
707 methodLocation(jmethodID method, jlocation *ploc1, jlocation *ploc2)
708 {
709 jvmtiError error;
710
711 error = JVMTI_FUNC_PTR(gdata->jvmti,GetMethodLocation)
712 (gdata->jvmti, method, ploc1, ploc2);
713 return error;
714 }
715
716 /**
717 * Get method signature
718 */
719 jvmtiError
720 methodSignature(jmethodID method,
721 char **pname, char **psignature, char **pgeneric_signature)
722 {
723 jvmtiError error;
724 char *name = NULL;
725 char *signature = NULL;
726 char *generic_signature = NULL;
727
728 error = FUNC_PTR(gdata->jvmti,GetMethodName)
729 (gdata->jvmti, method, &name, &signature, &generic_signature);
730
731 if ( pname != NULL ) {
732 *pname = name;
733 } else if ( name != NULL ) {
734 jvmtiDeallocate(name);
735 }
736 if ( psignature != NULL ) {
737 *psignature = signature;
738 } else if ( signature != NULL ) {
739 jvmtiDeallocate(signature);
740 }
741 if ( pgeneric_signature != NULL ) {
742 *pgeneric_signature = generic_signature;
743 } else if ( generic_signature != NULL ) {
744 jvmtiDeallocate(generic_signature);
745 }
746 return error;
747 }
748
749 /*
750 * Get the return type key of the method
751 * V or B C D F I J S Z L [
752 */
753 jvmtiError
754 methodReturnType(jmethodID method, char *typeKey)
755 {
756 char *signature;
757 jvmtiError error;
758
759 signature = NULL;
760 error = methodSignature(method, NULL, &signature, NULL);
761 if (error == JVMTI_ERROR_NONE) {
762 if (signature == NULL ) {
763 error = AGENT_ERROR_INVALID_TAG;
764 } else {
765 char * xx;
766
767 xx = strchr(signature, ')');
768 if (xx == NULL || *(xx + 1) == 0) {
769 error = AGENT_ERROR_INVALID_TAG;
770 } else {
771 *typeKey = *(xx + 1);
772 }
773 jvmtiDeallocate(signature);
774 }
775 }
776 return error;
777 }
778
779
780 /**
781 * Return class loader for a class (must be inside a WITH_LOCAL_REFS)
782 */
783 jvmtiError
784 classLoader(jclass clazz, jobject *pclazz)
785 {
786 jvmtiError error;
787
788 *pclazz = NULL;
789 error = JVMTI_FUNC_PTR(gdata->jvmti,GetClassLoader)
790 (gdata->jvmti, clazz, pclazz);
791 return error;
792 }
793
794 /**
795 * Get field signature
796 */
797 jvmtiError
798 fieldSignature(jclass clazz, jfieldID field,
799 char **pname, char **psignature, char **pgeneric_signature)
800 {
801 jvmtiError error;
802 char *name = NULL;
803 char *signature = NULL;
804 char *generic_signature = NULL;
805
806 error = JVMTI_FUNC_PTR(gdata->jvmti,GetFieldName)
807 (gdata->jvmti, clazz, field, &name, &signature, &generic_signature);
808
809 if ( pname != NULL ) {
810 *pname = name;
811 } else if ( name != NULL ) {
812 jvmtiDeallocate(name);
813 }
814 if ( psignature != NULL ) {
815 *psignature = signature;
816 } else if ( signature != NULL ) {
817 jvmtiDeallocate(signature);
818 }
819 if ( pgeneric_signature != NULL ) {
820 *pgeneric_signature = generic_signature;
821 } else if ( generic_signature != NULL ) {
822 jvmtiDeallocate(generic_signature);
823 }
824 return error;
825 }
826
827 JNIEnv *
828 getEnv(void)
829 {
830 JNIEnv *env = NULL;
831 jint rc;
832
833 rc = FUNC_PTR(gdata->jvm,GetEnv)
834 (gdata->jvm, (void **)&env, JNI_VERSION_1_2);
835 if (rc != JNI_OK) {
836 ERROR_MESSAGE(("JDWP Unable to get JNI 1.2 environment, jvm->GetEnv() return code = %d",
837 rc));
838 EXIT_ERROR(AGENT_ERROR_NO_JNI_ENV,NULL);
839 }
840 return env;
841 }
842
843 jvmtiError
844 spawnNewThread(jvmtiStartFunction func, void *arg, char *name)
845 {
846 JNIEnv *env = getEnv();
847 jvmtiError error;
848
849 LOG_MISC(("Spawning new thread: %s", name));
850
851 WITH_LOCAL_REFS(env, 3) {
852
853 jthread thread;
854 jstring nameString;
855
856 nameString = JNI_FUNC_PTR(env,NewStringUTF)(env, name);
857 if (JNI_FUNC_PTR(env,ExceptionOccurred)(env)) {
858 JNI_FUNC_PTR(env,ExceptionClear)(env);
859 error = AGENT_ERROR_OUT_OF_MEMORY;
860 goto err;
861 }
862
863 thread = JNI_FUNC_PTR(env,NewObject)
864 (env, gdata->threadClass, gdata->threadConstructor,
865 gdata->systemThreadGroup, nameString);
866 if (JNI_FUNC_PTR(env,ExceptionOccurred)(env)) {
867 JNI_FUNC_PTR(env,ExceptionClear)(env);
868 error = AGENT_ERROR_OUT_OF_MEMORY;
869 goto err;
870 }
871
872 /*
873 * Make the debugger thread a daemon
874 */
875 JNI_FUNC_PTR(env,CallVoidMethod)
876 (env, thread, gdata->threadSetDaemon, JNI_TRUE);
877 if (JNI_FUNC_PTR(env,ExceptionOccurred)(env)) {
878 JNI_FUNC_PTR(env,ExceptionClear)(env);
879 error = AGENT_ERROR_JNI_EXCEPTION;
880 goto err;
881 }
882
883 error = threadControl_addDebugThread(thread);
884 if (error == JVMTI_ERROR_NONE) {
885 /*
886 * Debugger threads need cycles in all sorts of strange
887 * situations (e.g. infinite cpu-bound loops), so give the
888 * thread a high priority. Note that if the VM has an application
889 * thread running at the max priority, there is still a chance
890 * that debugger threads will be starved. (There needs to be
891 * a way to give debugger threads a priority higher than any
892 * application thread).
893 */
894 error = JVMTI_FUNC_PTR(gdata->jvmti,RunAgentThread)
895 (gdata->jvmti, thread, func, arg,
896 JVMTI_THREAD_MAX_PRIORITY);
897 }
898
899 err: ;
900
901 } END_WITH_LOCAL_REFS(env);
902
903 return error;
904 }
905
906 jvmtiError
907 jvmtiGetCapabilities(jvmtiCapabilities *caps)
908 {
909 if ( gdata->vmDead ) {
910 return AGENT_ERROR_VM_DEAD;
911 }
912 if (!gdata->haveCachedJvmtiCapabilities) {
913 jvmtiError error;
914
915 error = JVMTI_FUNC_PTR(gdata->jvmti,GetCapabilities)
916 (gdata->jvmti, &(gdata->cachedJvmtiCapabilities));
917 if (error != JVMTI_ERROR_NONE) {
918 return error;
919 }
920 gdata->haveCachedJvmtiCapabilities = JNI_TRUE;
921 }
922
923 *caps = gdata->cachedJvmtiCapabilities;
924
925 return JVMTI_ERROR_NONE;
926 }
927
928 static jint
929 jvmtiVersion(void)
930 {
931 if (gdata->cachedJvmtiVersion == 0) {
932 jvmtiError error;
933 error = JVMTI_FUNC_PTR(gdata->jvmti,GetVersionNumber)
934 (gdata->jvmti, &(gdata->cachedJvmtiVersion));
935 if (error != JVMTI_ERROR_NONE) {
936 EXIT_ERROR(error, "on getting the JVMTI version number");
937 }
938 }
939 return gdata->cachedJvmtiVersion;
940 }
941
942 jint
943 jvmtiMajorVersion(void)
944 {
945 return (jvmtiVersion() & JVMTI_VERSION_MASK_MAJOR)
946 >> JVMTI_VERSION_SHIFT_MAJOR;
947 }
948
949 jint
950 jvmtiMinorVersion(void)
951 {
952 return (jvmtiVersion() & JVMTI_VERSION_MASK_MINOR)
953 >> JVMTI_VERSION_SHIFT_MINOR;
954 }
955
956 jint
957 jvmtiMicroVersion(void)
958 {
959 return (jvmtiVersion() & JVMTI_VERSION_MASK_MICRO)
960 >> JVMTI_VERSION_SHIFT_MICRO;
961 }
962
963 jboolean
964 canSuspendResumeThreadLists(void)
965 {
966 jvmtiError error;
967 jvmtiCapabilities cap;
968
969 error = jvmtiGetCapabilities(&cap);
970 return (error == JVMTI_ERROR_NONE && cap.can_suspend);
971 }
972
973 jvmtiError
974 getSourceDebugExtension(jclass clazz, char **extensionPtr)
975 {
976 return JVMTI_FUNC_PTR(gdata->jvmti,GetSourceDebugExtension)
977 (gdata->jvmti, clazz, extensionPtr);
978 }
979
980 /*
981 * Convert the signature "Ljava/lang/Foo;" to a
982 * classname "java.lang.Foo" compatible with the pattern.
983 * Signature is overwritten in-place.
984 */
985 void
986 convertSignatureToClassname(char *convert)
987 {
988 char *p;
989
990 p = convert + 1;
991 while ((*p != ';') && (*p != '\0')) {
992 char c = *p;
993 if (c == '/') {
994 *(p-1) = '.';
995 } else {
996 *(p-1) = c;
997 }
998 p++;
999 }
1000 *(p-1) = '\0';
1001 }
1002
1003 static void
1004 handleInterrupt(void)
1005 {
1006 /*
1007 * An interrupt is handled:
1008 *
1009 * 1) for running application threads by deferring the interrupt
1010 * until the current event handler has concluded.
1011 *
1012 * 2) for debugger threads by ignoring the interrupt; this is the
1013 * most robust solution since debugger threads don't use interrupts
1014 * to signal any condition.
1015 *
1016 * 3) for application threads that have not started or already
1017 * ended by ignoring the interrupt. In the former case, the application
1018 * is relying on timing to determine whether or not the thread sees
1019 * the interrupt; in the latter case, the interrupt is meaningless.
1020 */
1021 jthread thread = threadControl_currentThread();
1022 if ((thread != NULL) && (!threadControl_isDebugThread(thread))) {
1023 threadControl_setPendingInterrupt(thread);
1024 }
1025 }
1026
1027 static jvmtiError
1028 ignore_vm_death(jvmtiError error)
1029 {
1030 if (error == JVMTI_ERROR_WRONG_PHASE) {
1031 LOG_MISC(("VM_DEAD, in debugMonitor*()?"));
1032 return JVMTI_ERROR_NONE; /* JVMTI does this, not JVMDI? */
1033 }
1034 return error;
1035 }
1036
1037 void
1038 debugMonitorEnter(jrawMonitorID monitor)
1039 {
1040 jvmtiError error;
1041 while (JNI_TRUE) {
1042 error = FUNC_PTR(gdata->jvmti,RawMonitorEnter)
1043 (gdata->jvmti, monitor);
1044 error = ignore_vm_death(error);
1045 if (error == JVMTI_ERROR_INTERRUPT) {
1046 handleInterrupt();
1047 } else {
1048 break;
1049 }
1050 }
1051 if (error != JVMTI_ERROR_NONE) {
1052 EXIT_ERROR(error, "on raw monitor enter");
1053 }
1054 }
1055
1056 void
1057 debugMonitorExit(jrawMonitorID monitor)
1058 {
1059 jvmtiError error;
1060
1061 error = FUNC_PTR(gdata->jvmti,RawMonitorExit)
1062 (gdata->jvmti, monitor);
1063 error = ignore_vm_death(error);
1064 if (error != JVMTI_ERROR_NONE) {
1065 EXIT_ERROR(error, "on raw monitor exit");
1066 }
1067 }
1068
1069 void
1070 debugMonitorWait(jrawMonitorID monitor)
1071 {
1072 jvmtiError error;
1073 error = FUNC_PTR(gdata->jvmti,RawMonitorWait)
1074 (gdata->jvmti, monitor, ((jlong)(-1)));
1075
1076 /*
1077 * According to the JLS (17.8), here we have
1078 * either :
1079 * a- been notified
1080 * b- gotten a suprious wakeup
1081 * c- been interrupted
1082 * If both a and c have happened, the VM must choose
1083 * which way to return - a or c. If it chooses c
1084 * then the notify is gone - either to some other
1085 * thread that is also waiting, or it is dropped
1086 * on the floor.
1087 *
1088 * a is what we expect. b won't hurt us any -
1089 * callers should be programmed to handle
1090 * spurious wakeups. In case of c,
1091 * then the interrupt has been cleared, but
1092 * we don't want to consume it. It came from
1093 * user code and is intended for user code, not us.
1094 * So, we will remember that the interrupt has
1095 * occurred and re-activate it when this thread
1096 * goes back into user code.
1097 * That being said, what do we do here? Since
1098 * we could have been notified too, here we will
1099 * just pretend that we have been. It won't hurt
1100 * anything to return in the same way as if
1101 * we were notified since callers have to be able to
1102 * handle spurious wakeups anyway.
1103 */
1104 if (error == JVMTI_ERROR_INTERRUPT) {
1105 handleInterrupt();
1106 error = JVMTI_ERROR_NONE;
1107 }
1108 error = ignore_vm_death(error);
1109 if (error != JVMTI_ERROR_NONE) {
1110 EXIT_ERROR(error, "on raw monitor wait");
1111 }
1112 }
1113
1114 void
1115 debugMonitorTimedWait(jrawMonitorID monitor, jlong millis)
1116 {
1117 jvmtiError error;
1118 error = FUNC_PTR(gdata->jvmti,RawMonitorWait)
1119 (gdata->jvmti, monitor, millis);
1120 if (error == JVMTI_ERROR_INTERRUPT) {
1121 /* See comment above */
1122 handleInterrupt();
1123 error = JVMTI_ERROR_NONE;
1124 }
1125 error = ignore_vm_death(error);
1126 if (error != JVMTI_ERROR_NONE) {
1127 EXIT_ERROR(error, "on raw monitor timed wait");
1128 }
1129 }
1130
1131 void
1132 debugMonitorNotify(jrawMonitorID monitor)
1133 {
1134 jvmtiError error;
1135
1136 error = FUNC_PTR(gdata->jvmti,RawMonitorNotify)
1137 (gdata->jvmti, monitor);
1138 error = ignore_vm_death(error);
1139 if (error != JVMTI_ERROR_NONE) {
1140 EXIT_ERROR(error, "on raw monitor notify");
1141 }
1142 }
1143
1144 void
1145 debugMonitorNotifyAll(jrawMonitorID monitor)
1146 {
1147 jvmtiError error;
1148
1149 error = FUNC_PTR(gdata->jvmti,RawMonitorNotifyAll)
1150 (gdata->jvmti, monitor);
1151 error = ignore_vm_death(error);
1152 if (error != JVMTI_ERROR_NONE) {
1153 EXIT_ERROR(error, "on raw monitor notify all");
1154 }
1155 }
1156
1157 jrawMonitorID
1158 debugMonitorCreate(char *name)
1159 {
1160 jrawMonitorID monitor;
1161 jvmtiError error;
1162
1163 error = FUNC_PTR(gdata->jvmti,CreateRawMonitor)
1164 (gdata->jvmti, name, &monitor);
1165 if (error != JVMTI_ERROR_NONE) {
1166 EXIT_ERROR(error, "on creation of a raw monitor");
1167 }
1168 return monitor;
1169 }
1170
1171 void
1172 debugMonitorDestroy(jrawMonitorID monitor)
1173 {
1174 jvmtiError error;
1175
1176 error = FUNC_PTR(gdata->jvmti,DestroyRawMonitor)
1177 (gdata->jvmti, monitor);
1178 error = ignore_vm_death(error);
1179 if (error != JVMTI_ERROR_NONE) {
1180 EXIT_ERROR(error, "on destruction of raw monitor");
1181 }
1182 }
1183
1184 /**
1185 * Return array of all threads (must be inside a WITH_LOCAL_REFS)
1186 */
1187 jthread *
1188 allThreads(jint *count)
1189 {
1190 jthread *threads;
1191 jvmtiError error;
1192
1193 *count = 0;
1194 threads = NULL;
1195 error = JVMTI_FUNC_PTR(gdata->jvmti,GetAllThreads)
1196 (gdata->jvmti, count, &threads);
1197 if (error == AGENT_ERROR_OUT_OF_MEMORY) {
1198 return NULL; /* Let caller deal with no memory? */
1199 }
1200 if (error != JVMTI_ERROR_NONE) {
1201 EXIT_ERROR(error, "getting all threads");
1202 }
1203 return threads;
1204 }
1205
1206 /**
1207 * Fill the passed in structure with thread group info.
1208 * name field is JVMTI allocated. parent is global ref.
1209 */
1210 void
1211 threadGroupInfo(jthreadGroup group, jvmtiThreadGroupInfo *info)
1212 {
1213 jvmtiError error;
1214
1215 error = JVMTI_FUNC_PTR(gdata->jvmti,GetThreadGroupInfo)
1216 (gdata->jvmti, group, info);
1217 if (error != JVMTI_ERROR_NONE) {
1218 EXIT_ERROR(error, "on getting thread group info");
1219 }
1220 }
1221
1222 /**
1223 * Return class signature string
1224 */
1225 jvmtiError
1226 classSignature(jclass clazz, char **psignature, char **pgeneric_signature)
1227 {
1228 jvmtiError error;
1229 char *signature = NULL;
1230
1231 /*
1232 * pgeneric_signature can be NULL, and GetClassSignature
1233 * accepts NULL.
1234 */
1235 error = FUNC_PTR(gdata->jvmti,GetClassSignature)
1236 (gdata->jvmti, clazz, &signature, pgeneric_signature);
1237
1238 if ( psignature != NULL ) {
1239 *psignature = signature;
1240 } else if ( signature != NULL ) {
1241 jvmtiDeallocate(signature);
1242 }
1243 return error;
1244 }
1245
1246 /* Get class name (not signature) */
1247 char *
1248 getClassname(jclass clazz)
1249 {
1250 char *classname;
1251
1252 classname = NULL;
1253 if ( clazz != NULL ) {
1254 if (classSignature(clazz, &classname, NULL) != JVMTI_ERROR_NONE) {
1255 classname = NULL;
1256 } else {
1257 /* Convert in place */
1258 convertSignatureToClassname(classname);
1259 }
1260 }
1261 return classname; /* Caller must free this memory */
1262 }
1263
1264 void
1265 writeGenericSignature(PacketOutputStream *out, char *genericSignature)
1266 {
1267 if (genericSignature == NULL) {
1268 (void)outStream_writeString(out, "");
1269 } else {
1270 (void)outStream_writeString(out, genericSignature);
1271 }
1272 }
1273
1274 jint
1275 classStatus(jclass clazz)
1276 {
1277 jint status;
1278 jvmtiError error;
1279
1280 error = JVMTI_FUNC_PTR(gdata->jvmti,GetClassStatus)
1281 (gdata->jvmti, clazz, &status);
1282 if (error != JVMTI_ERROR_NONE) {
1283 EXIT_ERROR(error, "on getting class status");
1284 }
1285 return status;
1286 }
1287
1288 static jboolean
1289 isArrayClass(jclass clazz)
1290 {
1291 jboolean isArray = JNI_FALSE;
1292 jvmtiError error;
1293
1294 error = JVMTI_FUNC_PTR(gdata->jvmti,IsArrayClass)
1295 (gdata->jvmti, clazz, &isArray);
1296 if (error != JVMTI_ERROR_NONE) {
1297 EXIT_ERROR(error, "on checking for an array class");
1298 }
1299 return isArray;
1300 }
1301
1302 static jboolean
1303 isInterface(jclass clazz)
1304 {
1305 jboolean isInterface = JNI_FALSE;
1306 jvmtiError error;
1307
1308 error = JVMTI_FUNC_PTR(gdata->jvmti,IsInterface)
1309 (gdata->jvmti, clazz, &isInterface);
1310 if (error != JVMTI_ERROR_NONE) {
1311 EXIT_ERROR(error, "on checking for an interface");
1312 }
1313 return isInterface;
1314 }
1315
1316 jvmtiError
1317 isFieldSynthetic(jclass clazz, jfieldID field, jboolean *psynthetic)
1318 {
1319 jvmtiError error;
1320
1321 error = JVMTI_FUNC_PTR(gdata->jvmti,IsFieldSynthetic)
1322 (gdata->jvmti, clazz, field, psynthetic);
1323 if ( error == JVMTI_ERROR_MUST_POSSESS_CAPABILITY ) {
1324 /* If the query is not supported, we assume it is not synthetic. */
1325 *psynthetic = JNI_FALSE;
1326 return JVMTI_ERROR_NONE;
1327 }
1328 return error;
1329 }
1330
1331 jvmtiError
1332 isMethodSynthetic(jmethodID method, jboolean *psynthetic)
1333 {
1334 jvmtiError error;
1335
1336 error = JVMTI_FUNC_PTR(gdata->jvmti,IsMethodSynthetic)
1337 (gdata->jvmti, method, psynthetic);
1338 if ( error == JVMTI_ERROR_MUST_POSSESS_CAPABILITY ) {
1339 /* If the query is not supported, we assume it is not synthetic. */
1340 *psynthetic = JNI_FALSE;
1341 return JVMTI_ERROR_NONE;
1342 }
1343 return error;
1344 }
1345
1346 jboolean
1347 isMethodNative(jmethodID method)
1348 {
1349 jboolean isNative = JNI_FALSE;
1350 jvmtiError error;
1351
1352 error = JVMTI_FUNC_PTR(gdata->jvmti,IsMethodNative)
1353 (gdata->jvmti, method, &isNative);
1354 if (error != JVMTI_ERROR_NONE) {
1355 EXIT_ERROR(error, "on checking for a native interface");
1356 }
1357 return isNative;
1358 }
1359
1360 jboolean
1361 isSameObject(JNIEnv *env, jobject o1, jobject o2)
1362 {
1363 if ( o1==o2 ) {
1364 return JNI_TRUE;
1365 }
1366 return FUNC_PTR(env,IsSameObject)(env, o1, o2);
1367 }
1368
1369 jint
1370 objectHashCode(jobject object)
1371 {
1372 jint hashCode = 0;
1373 jvmtiError error;
1374
1375 if ( object!=NULL ) {
1376 error = JVMTI_FUNC_PTR(gdata->jvmti,GetObjectHashCode)
1377 (gdata->jvmti, object, &hashCode);
1378 if (error != JVMTI_ERROR_NONE) {
1379 EXIT_ERROR(error, "on getting an object hash code");
1380 }
1381 }
1382 return hashCode;
1383 }
1384
1385 /* Get all implemented interfaces (must be inside a WITH_LOCAL_REFS) */
1386 jvmtiError
1387 allInterfaces(jclass clazz, jclass **ppinterfaces, jint *pcount)
1388 {
1389 jvmtiError error;
1390
1391 *pcount = 0;
1392 *ppinterfaces = NULL;
1393 error = JVMTI_FUNC_PTR(gdata->jvmti,GetImplementedInterfaces)
1394 (gdata->jvmti, clazz, pcount, ppinterfaces);
1395 return error;
1396 }
1397
1398 /* Get all loaded classes (must be inside a WITH_LOCAL_REFS) */
1399 jvmtiError
1400 allLoadedClasses(jclass **ppclasses, jint *pcount)
1401 {
1402 jvmtiError error;
1403
1404 *pcount = 0;
1405 *ppclasses = NULL;
1406 error = JVMTI_FUNC_PTR(gdata->jvmti,GetLoadedClasses)
1407 (gdata->jvmti, pcount, ppclasses);
1408 return error;
1409 }
1410
1411 /* Get all loaded classes for a loader (must be inside a WITH_LOCAL_REFS) */
1412 jvmtiError
1413 allClassLoaderClasses(jobject loader, jclass **ppclasses, jint *pcount)
1414 {
1415 jvmtiError error;
1416
1417 *pcount = 0;
1418 *ppclasses = NULL;
1419 error = JVMTI_FUNC_PTR(gdata->jvmti,GetClassLoaderClasses)
1420 (gdata->jvmti, loader, pcount, ppclasses);
1421 return error;
1422 }
1423
1424 static jboolean
1425 is_a_nested_class(char *outer_sig, int outer_sig_len, char *sig, int sep)
1426 {
1427 char *inner;
1428
1429 /* Assumed outer class signature is "LOUTERCLASSNAME;"
1430 * inner class signature is "LOUTERCLASSNAME$INNERNAME;"
1431 *
1432 * INNERNAME can take the form:
1433 * [0-9][1-9]* anonymous class somewhere in the file
1434 * [0-9][1-9]*NAME local class somewhere in the OUTER class
1435 * NAME nested class in OUTER
1436 *
1437 * If NAME itself contains a $ (sep) then classname is further nested
1438 * inside another class.
1439 *
1440 */
1441
1442 /* Check prefix first */
1443 if ( strncmp(sig, outer_sig, outer_sig_len-1) != 0 ) {
1444 return JNI_FALSE;
1445 }
1446
1447 /* Prefix must be followed by a $ (sep) */
1448 if ( sig[outer_sig_len-1] != sep ) {
1449 return JNI_FALSE; /* No sep follows the match, must not be nested. */
1450 }
1451
1452 /* Walk past any digits, if we reach the end, must be pure anonymous */
1453 inner = sig + outer_sig_len;
1454 #if 1 /* We want to return local classes */
1455 while ( *inner && isdigit(*inner) ) {
1456 inner++;
1457 }
1458 /* But anonymous class names can't be trusted. */
1459 if ( *inner == ';' ) {
1460 return JNI_FALSE; /* A pure anonymous class */
1461 }
1462 #else
1463 if ( *inner && isdigit(*inner) ) {
1464 return JNI_FALSE; /* A pure anonymous or local class */
1465 }
1466 #endif
1467
1468 /* Nested deeper? */
1469 if ( strchr(inner, sep) != NULL ) {
1470 return JNI_FALSE; /* Nested deeper than we want? */
1471 }
1472 return JNI_TRUE;
1473 }
1474
1475 /* Get all nested classes for a class (must be inside a WITH_LOCAL_REFS) */
1476 jvmtiError
1477 allNestedClasses(jclass parent_clazz, jclass **ppnested, jint *pcount)
1478 {
1479 jvmtiError error;
1480 jobject parent_loader;
1481 jclass *classes;
1482 char *signature;
1483 size_t len;
1484 jint count;
1485 jint ncount;
1486 int i;
1487
1488 *ppnested = NULL;
1489 *pcount = 0;
1490
1491 parent_loader = NULL;
1492 classes = NULL;
1493 signature = NULL;
1494 count = 0;
1495 ncount = 0;
1496
1497 error = classLoader(parent_clazz, &parent_loader);
1498 if (error != JVMTI_ERROR_NONE) {
1499 return error;
1500 }
1501 error = classSignature(parent_clazz, &signature, NULL);
1502 if (error != JVMTI_ERROR_NONE) {
1503 return error;
1504 }
1505 len = strlen(signature);
1506
1507 error = allClassLoaderClasses(parent_loader, &classes, &count);
1508 if ( error != JVMTI_ERROR_NONE ) {
1509 jvmtiDeallocate(signature);
1510 return error;
1511 }
1512
1513 for (i=0; i<count; i++) {
1514 jclass clazz;
1515 char *candidate_signature;
1516
1517 clazz = classes[i];
1518 candidate_signature = NULL;
1519 error = classSignature(clazz, &candidate_signature, NULL);
1520 if (error != JVMTI_ERROR_NONE) {
1521 break;
1522 }
1523
1524 if ( is_a_nested_class(signature, (int)len, candidate_signature, '$') ||
1525 is_a_nested_class(signature, (int)len, candidate_signature, '#') ) {
1526 /* Float nested classes to top */
1527 classes[i] = classes[ncount];
1528 classes[ncount++] = clazz;
1529 }
1530 jvmtiDeallocate(candidate_signature);
1531 }
1532
1533 jvmtiDeallocate(signature);
1534
1535 if ( count != 0 && ncount == 0 ) {
1536 jvmtiDeallocate(classes);
1537 classes = NULL;
1538 }
1539
1540 *ppnested = classes;
1541 *pcount = ncount;
1542 return error;
1543 }
1544
1545 void
1546 createLocalRefSpace(JNIEnv *env, jint capacity)
1547 {
1548 /*
1549 * Save current exception since it might get overwritten by
1550 * the calls below. Note we must depend on space in the existing
1551 * frame because asking for a new frame may generate an exception.
1552 */
1553 jobject throwable = JNI_FUNC_PTR(env,ExceptionOccurred)(env);
1554
1555 /*
1556 * Use the current frame if necessary; otherwise create a new one
1557 */
1558 if (JNI_FUNC_PTR(env,PushLocalFrame)(env, capacity) < 0) {
1559 EXIT_ERROR(AGENT_ERROR_OUT_OF_MEMORY,"PushLocalFrame: Unable to push JNI frame");
1560 }
1561
1562 /*
1563 * TO DO: This could be more efficient if it used EnsureLocalCapacity,
1564 * but that would not work if two functions on the call stack
1565 * use this function. We would need to either track reserved
1566 * references on a per-thread basis or come up with a convention
1567 * that would prevent two functions from depending on this function
1568 * at the same time.
1569 */
1570
1571 /*
1572 * Restore exception state from before call
1573 */
1574 if (throwable != NULL) {
1575 JNI_FUNC_PTR(env,Throw)(env, throwable);
1576 } else {
1577 JNI_FUNC_PTR(env,ExceptionClear)(env);
1578 }
1579 }
1580
1581 jboolean
1582 isClass(jobject object)
1583 {
1584 JNIEnv *env = getEnv();
1585 return JNI_FUNC_PTR(env,IsInstanceOf)(env, object, gdata->classClass);
1586 }
1587
1588 jboolean
1589 isThread(jobject object)
1590 {
1591 JNIEnv *env = getEnv();
1592 return JNI_FUNC_PTR(env,IsInstanceOf)(env, object, gdata->threadClass);
1593 }
1594
1595 jboolean
1596 isThreadGroup(jobject object)
1597 {
1598 JNIEnv *env = getEnv();
1599 return JNI_FUNC_PTR(env,IsInstanceOf)(env, object, gdata->threadGroupClass);
1600 }
1601
1602 jboolean
1603 isString(jobject object)
1604 {
1605 JNIEnv *env = getEnv();
1606 return JNI_FUNC_PTR(env,IsInstanceOf)(env, object, gdata->stringClass);
1607 }
1608
1609 jboolean
1610 isClassLoader(jobject object)
1611 {
1612 JNIEnv *env = getEnv();
1613 return JNI_FUNC_PTR(env,IsInstanceOf)(env, object, gdata->classLoaderClass);
1614 }
1615
1616 jboolean
1617 isArray(jobject object)
1618 {
1619 JNIEnv *env = getEnv();
1620 jboolean is;
1621
1622 WITH_LOCAL_REFS(env, 1) {
1623 jclass clazz;
1624 clazz = JNI_FUNC_PTR(env,GetObjectClass)(env, object);
1625 is = isArrayClass(clazz);
1626 } END_WITH_LOCAL_REFS(env);
1627
1628 return is;
1629 }
1630
1631 /**
1632 * Return property value as jstring
1633 */
1634 static jstring
1635 getPropertyValue(JNIEnv *env, char *propertyName)
1636 {
1637 jstring valueString;
1638 jstring nameString;
1639
1640 valueString = NULL;
1641
1642 /* Create new String object to hold the property name */
1643 nameString = JNI_FUNC_PTR(env,NewStringUTF)(env, propertyName);
1644 if (JNI_FUNC_PTR(env,ExceptionOccurred)(env)) {
1645 JNI_FUNC_PTR(env,ExceptionClear)(env);
1646 /* NULL will be returned below */
1647 } else {
1648 /* Call valueString = System.getProperty(nameString) */
1649 valueString = JNI_FUNC_PTR(env,CallStaticObjectMethod)
1650 (env, gdata->systemClass, gdata->systemGetProperty, nameString);
1651 if (JNI_FUNC_PTR(env,ExceptionOccurred)(env)) {
1652 JNI_FUNC_PTR(env,ExceptionClear)(env);
1653 valueString = NULL;
1654 }
1655 }
1656 return valueString;
1657 }
1658
1659 /**
1660 * Set an agent property
1661 */
1662 void
1663 setAgentPropertyValue(JNIEnv *env, char *propertyName, char* propertyValue)
1664 {
1665 jstring nameString;
1666 jstring valueString;
1667
1668 if (gdata->agent_properties == NULL) {
1669 /* VMSupport doesn't exist; so ignore */
1670 return;
1671 }
1672
1673 /* Create jstrings for property name and value */
1674 nameString = JNI_FUNC_PTR(env,NewStringUTF)(env, propertyName);
1675 if (nameString != NULL) {
1676 valueString = JNI_FUNC_PTR(env,NewStringUTF)(env, propertyValue);
1677 if (valueString != NULL) {
1678 /* invoke Properties.setProperty */
1679 JNI_FUNC_PTR(env,CallObjectMethod)
1680 (env, gdata->agent_properties,
1681 gdata->setProperty,
1682 nameString, valueString);
1683 }
1684 }
1685 if (JNI_FUNC_PTR(env,ExceptionOccurred)(env)) {
1686 JNI_FUNC_PTR(env,ExceptionClear)(env);
1687 }
1688 }
1689
1690 /**
1691 * Return property value as JDWP allocated string in UTF8 encoding
1692 */
1693 static char *
1694 getPropertyUTF8(JNIEnv *env, char *propertyName)
1695 {
1696 jvmtiError error;
1697 char *value;
1698
1699 value = NULL;
1700 error = JVMTI_FUNC_PTR(gdata->jvmti,GetSystemProperty)
1701 (gdata->jvmti, (const char *)propertyName, &value);
1702 if (error != JVMTI_ERROR_NONE) {
1703 jstring valueString;
1704
1705 value = NULL;
1706 valueString = getPropertyValue(env, propertyName);
1707
1708 if (valueString != NULL) {
1709 const char *utf;
1710
1711 /* Get the UTF8 encoding for this property value string */
1712 utf = JNI_FUNC_PTR(env,GetStringUTFChars)(env, valueString, NULL);
1713 /* Make a copy for returning, release the JNI copy */
1714 value = jvmtiAllocate((int)strlen(utf) + 1);
1715 if (value != NULL) {
1716 (void)strcpy(value, utf);
1717 }
1718 JNI_FUNC_PTR(env,ReleaseStringUTFChars)(env, valueString, utf);
1719 }
1720 }
1721 if ( value == NULL ) {
1722 ERROR_MESSAGE(("JDWP Can't get property value for %s", propertyName));
1723 EXIT_ERROR(AGENT_ERROR_NULL_POINTER,NULL);
1724 }
1725 return value;
1726 }
1727
1728 jboolean
1729 isMethodObsolete(jmethodID method)
1730 {
1731 jvmtiError error;
1732 jboolean obsolete = JNI_TRUE;
1733
1734 if ( method != NULL ) {
1735 error = JVMTI_FUNC_PTR(gdata->jvmti,IsMethodObsolete)
1736 (gdata->jvmti, method, &obsolete);
1737 if (error != JVMTI_ERROR_NONE) {
1738 obsolete = JNI_TRUE;
1739 }
1740 }
1741 return obsolete;
1742 }
1743
1744 /* Get the jvmti environment to be used with tags */
1745 static jvmtiEnv *
1746 getSpecialJvmti(void)
1747 {
1748 jvmtiEnv *jvmti;
1749 jvmtiError error;
1750 int rc;
1751
1752 /* Get one time use JVMTI Env */
1753 jvmtiCapabilities caps;
1754
1755 rc = JVM_FUNC_PTR(gdata->jvm,GetEnv)
1756 (gdata->jvm, (void **)&jvmti, JVMTI_VERSION_1);
1757 if (rc != JNI_OK) {
1758 return NULL;
1759 }
1760 (void)memset(&caps, 0, (int)sizeof(caps));
1761 caps.can_tag_objects = 1;
1762 error = JVMTI_FUNC_PTR(jvmti,AddCapabilities)(jvmti, &caps);
1763 if ( error != JVMTI_ERROR_NONE ) {
1764 return NULL;
1765 }
1766 return jvmti;
1767 }
1768
1769 void
1770 writeCodeLocation(PacketOutputStream *out, jclass clazz,
1771 jmethodID method, jlocation location)
1772 {
1773 jbyte tag;
1774
1775 if (clazz != NULL) {
1776 tag = referenceTypeTag(clazz);
1777 } else {
1778 tag = JDWP_TYPE_TAG(CLASS);
1779 }
1780 (void)outStream_writeByte(out, tag);
1781 (void)outStream_writeObjectRef(getEnv(), out, clazz);
1782 (void)outStream_writeMethodID(out, isMethodObsolete(method)?NULL:method);
1783 (void)outStream_writeLocation(out, location);
1784 }
1785
1786 void *
1787 jvmtiAllocate(jint numBytes)
1788 {
1789 void *ptr;
1790 jvmtiError error;
1791
1792 if (gdata->vmDead) {
1793 EXIT_ERROR(AGENT_ERROR_INTERNAL,"Attempt to allocate after VM death");
1794 }
1795
1796 if ( numBytes == 0 ) {
1797 return NULL;
1798 }
1799 error = FUNC_PTR(gdata->jvmti,Allocate)
1800 (gdata->jvmti, numBytes, (unsigned char**)&ptr);
1801 if (error != JVMTI_ERROR_NONE ) {
1802 EXIT_ERROR(error, "Can't allocate jvmti memory");
1803 }
1804 return ptr;
1805 }
1806
1807 void
1808 jvmtiDeallocate(void *ptr)
1809 {
1810 jvmtiError error;
1811 if ( ptr == NULL ) {
1812 return;
1813 }
1814 error = FUNC_PTR(gdata->jvmti,Deallocate)
1815 (gdata->jvmti, ptr);
1816 if (error != JVMTI_ERROR_NONE ) {
1817 EXIT_ERROR(error, "Can't deallocate jvmti memory");
1818 }
1819 }
1820
1821 /* Rarely needed, transport library uses JDWP errors, only use? */
1822 jvmtiError
1823 map2jvmtiError(jdwpError error)
1824 {
1825 switch ( error ) {
1826 case JDWP_ERROR(NONE):
1827 return JVMTI_ERROR_NONE;
1828 case JDWP_ERROR(INVALID_THREAD):
1829 return JVMTI_ERROR_INVALID_THREAD;
1830 case JDWP_ERROR(INVALID_THREAD_GROUP):
1831 return JVMTI_ERROR_INVALID_THREAD_GROUP;
1832 case JDWP_ERROR(INVALID_PRIORITY):
1833 return JVMTI_ERROR_INVALID_PRIORITY;
1834 case JDWP_ERROR(THREAD_NOT_SUSPENDED):
1835 return JVMTI_ERROR_THREAD_NOT_SUSPENDED;
1836 case JDWP_ERROR(THREAD_SUSPENDED):
1837 return JVMTI_ERROR_THREAD_SUSPENDED;
1838 case JDWP_ERROR(INVALID_OBJECT):
1839 return JVMTI_ERROR_INVALID_OBJECT;
1840 case JDWP_ERROR(INVALID_CLASS):
1841 return JVMTI_ERROR_INVALID_CLASS;
1842 case JDWP_ERROR(CLASS_NOT_PREPARED):
1843 return JVMTI_ERROR_CLASS_NOT_PREPARED;
1844 case JDWP_ERROR(INVALID_METHODID):
1845 return JVMTI_ERROR_INVALID_METHODID;
1846 case JDWP_ERROR(INVALID_LOCATION):
1847 return JVMTI_ERROR_INVALID_LOCATION;
1848 case JDWP_ERROR(INVALID_FIELDID):
1849 return JVMTI_ERROR_INVALID_FIELDID;
1850 case JDWP_ERROR(INVALID_FRAMEID):
1851 return AGENT_ERROR_INVALID_FRAMEID;
1852 case JDWP_ERROR(NO_MORE_FRAMES):
1853 return JVMTI_ERROR_NO_MORE_FRAMES;
1854 case JDWP_ERROR(OPAQUE_FRAME):
1855 return JVMTI_ERROR_OPAQUE_FRAME;
1856 case JDWP_ERROR(NOT_CURRENT_FRAME):
1857 return AGENT_ERROR_NOT_CURRENT_FRAME;
1858 case JDWP_ERROR(TYPE_MISMATCH):
1859 return JVMTI_ERROR_TYPE_MISMATCH;
1860 case JDWP_ERROR(INVALID_SLOT):
1861 return JVMTI_ERROR_INVALID_SLOT;
1862 case JDWP_ERROR(DUPLICATE):
1863 return JVMTI_ERROR_DUPLICATE;
1864 case JDWP_ERROR(NOT_FOUND):
1865 return JVMTI_ERROR_NOT_FOUND;
1866 case JDWP_ERROR(INVALID_MONITOR):
1867 return JVMTI_ERROR_INVALID_MONITOR;
1868 case JDWP_ERROR(NOT_MONITOR_OWNER):
1869 return JVMTI_ERROR_NOT_MONITOR_OWNER;
1870 case JDWP_ERROR(INTERRUPT):
1871 return JVMTI_ERROR_INTERRUPT;
1872 case JDWP_ERROR(INVALID_CLASS_FORMAT):
1873 return JVMTI_ERROR_INVALID_CLASS_FORMAT;
1874 case JDWP_ERROR(CIRCULAR_CLASS_DEFINITION):
1875 return JVMTI_ERROR_CIRCULAR_CLASS_DEFINITION;
1876 case JDWP_ERROR(FAILS_VERIFICATION):
1877 return JVMTI_ERROR_FAILS_VERIFICATION;
1878 case JDWP_ERROR(ADD_METHOD_NOT_IMPLEMENTED):
1879 return JVMTI_ERROR_UNSUPPORTED_REDEFINITION_METHOD_ADDED;
1880 case JDWP_ERROR(SCHEMA_CHANGE_NOT_IMPLEMENTED):
1881 return JVMTI_ERROR_UNSUPPORTED_REDEFINITION_SCHEMA_CHANGED;
1882 case JDWP_ERROR(INVALID_TYPESTATE):
1883 return JVMTI_ERROR_INVALID_TYPESTATE;
1884 case JDWP_ERROR(HIERARCHY_CHANGE_NOT_IMPLEMENTED):
1885 return JVMTI_ERROR_UNSUPPORTED_REDEFINITION_HIERARCHY_CHANGED;
1886 case JDWP_ERROR(DELETE_METHOD_NOT_IMPLEMENTED):
1887 return JVMTI_ERROR_UNSUPPORTED_REDEFINITION_METHOD_DELETED;
1888 case JDWP_ERROR(UNSUPPORTED_VERSION):
1889 return JVMTI_ERROR_UNSUPPORTED_VERSION;
1890 case JDWP_ERROR(NAMES_DONT_MATCH):
1891 return JVMTI_ERROR_NAMES_DONT_MATCH;
1892 case JDWP_ERROR(CLASS_MODIFIERS_CHANGE_NOT_IMPLEMENTED):
1893 return JVMTI_ERROR_UNSUPPORTED_REDEFINITION_CLASS_MODIFIERS_CHANGED;
1894 case JDWP_ERROR(METHOD_MODIFIERS_CHANGE_NOT_IMPLEMENTED):
1895 return JVMTI_ERROR_UNSUPPORTED_REDEFINITION_METHOD_MODIFIERS_CHANGED;
1896 case JDWP_ERROR(NOT_IMPLEMENTED):
1897 return JVMTI_ERROR_NOT_AVAILABLE;
1898 case JDWP_ERROR(NULL_POINTER):
1899 return JVMTI_ERROR_NULL_POINTER;
1900 case JDWP_ERROR(ABSENT_INFORMATION):
1901 return JVMTI_ERROR_ABSENT_INFORMATION;
1902 case JDWP_ERROR(INVALID_EVENT_TYPE):
1903 return JVMTI_ERROR_INVALID_EVENT_TYPE;
1904 case JDWP_ERROR(ILLEGAL_ARGUMENT):
1905 return JVMTI_ERROR_ILLEGAL_ARGUMENT;
1906 case JDWP_ERROR(OUT_OF_MEMORY):
1907 return JVMTI_ERROR_OUT_OF_MEMORY;
1908 case JDWP_ERROR(ACCESS_DENIED):
1909 return JVMTI_ERROR_ACCESS_DENIED;
1910 case JDWP_ERROR(VM_DEAD):
1911 return JVMTI_ERROR_WRONG_PHASE;
1912 case JDWP_ERROR(UNATTACHED_THREAD):
1913 return JVMTI_ERROR_UNATTACHED_THREAD;
1914 case JDWP_ERROR(INVALID_TAG):
1915 return AGENT_ERROR_INVALID_TAG;
1916 case JDWP_ERROR(ALREADY_INVOKING):
1917 return AGENT_ERROR_ALREADY_INVOKING;
1918 case JDWP_ERROR(INVALID_INDEX):
1919 return AGENT_ERROR_INVALID_INDEX;
1920 case JDWP_ERROR(INVALID_LENGTH):
1921 return AGENT_ERROR_INVALID_LENGTH;
1922 case JDWP_ERROR(INVALID_STRING):
1923 return AGENT_ERROR_INVALID_STRING;
1924 case JDWP_ERROR(INVALID_CLASS_LOADER):
1925 return AGENT_ERROR_INVALID_CLASS_LOADER;
1926 case JDWP_ERROR(INVALID_ARRAY):
1927 return AGENT_ERROR_INVALID_ARRAY;
1928 case JDWP_ERROR(TRANSPORT_LOAD):
1929 return AGENT_ERROR_TRANSPORT_LOAD;
1930 case JDWP_ERROR(TRANSPORT_INIT):
1931 return AGENT_ERROR_TRANSPORT_INIT;
1932 case JDWP_ERROR(NATIVE_METHOD):
1933 return AGENT_ERROR_NATIVE_METHOD;
1934 case JDWP_ERROR(INVALID_COUNT):
1935 return AGENT_ERROR_INVALID_COUNT;
1936 case JDWP_ERROR(INTERNAL):
1937 return AGENT_ERROR_JDWP_INTERNAL;
1938 }
1939 return AGENT_ERROR_INTERNAL;
1940 }
1941
1942 static jvmtiEvent index2jvmti[EI_max-EI_min+1];
1943 static jdwpEvent index2jdwp [EI_max-EI_min+1];
1944
1945 void
1946 eventIndexInit(void)
1947 {
1948 (void)memset(index2jvmti, 0, (int)sizeof(index2jvmti));
1949 (void)memset(index2jdwp, 0, (int)sizeof(index2jdwp));
1950
1951 index2jvmti[EI_SINGLE_STEP -EI_min] = JVMTI_EVENT_SINGLE_STEP;
1952 index2jvmti[EI_BREAKPOINT -EI_min] = JVMTI_EVENT_BREAKPOINT;
1953 index2jvmti[EI_FRAME_POP -EI_min] = JVMTI_EVENT_FRAME_POP;
1954 index2jvmti[EI_EXCEPTION -EI_min] = JVMTI_EVENT_EXCEPTION;
1955 index2jvmti[EI_THREAD_START -EI_min] = JVMTI_EVENT_THREAD_START;
1956 index2jvmti[EI_THREAD_END -EI_min] = JVMTI_EVENT_THREAD_END;
1957 index2jvmti[EI_CLASS_PREPARE -EI_min] = JVMTI_EVENT_CLASS_PREPARE;
1958 index2jvmti[EI_GC_FINISH -EI_min] = JVMTI_EVENT_GARBAGE_COLLECTION_FINISH;
1959 index2jvmti[EI_CLASS_LOAD -EI_min] = JVMTI_EVENT_CLASS_LOAD;
1960 index2jvmti[EI_FIELD_ACCESS -EI_min] = JVMTI_EVENT_FIELD_ACCESS;
1961 index2jvmti[EI_FIELD_MODIFICATION -EI_min] = JVMTI_EVENT_FIELD_MODIFICATION;
1962 index2jvmti[EI_EXCEPTION_CATCH -EI_min] = JVMTI_EVENT_EXCEPTION_CATCH;
1963 index2jvmti[EI_METHOD_ENTRY -EI_min] = JVMTI_EVENT_METHOD_ENTRY;
1964 index2jvmti[EI_METHOD_EXIT -EI_min] = JVMTI_EVENT_METHOD_EXIT;
1965 index2jvmti[EI_MONITOR_CONTENDED_ENTER -EI_min] = JVMTI_EVENT_MONITOR_CONTENDED_ENTER;
1966 index2jvmti[EI_MONITOR_CONTENDED_ENTERED -EI_min] = JVMTI_EVENT_MONITOR_CONTENDED_ENTERED;
1967 index2jvmti[EI_MONITOR_WAIT -EI_min] = JVMTI_EVENT_MONITOR_WAIT;
1968 index2jvmti[EI_MONITOR_WAITED -EI_min] = JVMTI_EVENT_MONITOR_WAITED;
1969 index2jvmti[EI_VM_INIT -EI_min] = JVMTI_EVENT_VM_INIT;
1970 index2jvmti[EI_VM_DEATH -EI_min] = JVMTI_EVENT_VM_DEATH;
1971
1972 index2jdwp[EI_SINGLE_STEP -EI_min] = JDWP_EVENT(SINGLE_STEP);
1973 index2jdwp[EI_BREAKPOINT -EI_min] = JDWP_EVENT(BREAKPOINT);
1974 index2jdwp[EI_FRAME_POP -EI_min] = JDWP_EVENT(FRAME_POP);
1975 index2jdwp[EI_EXCEPTION -EI_min] = JDWP_EVENT(EXCEPTION);
1976 index2jdwp[EI_THREAD_START -EI_min] = JDWP_EVENT(THREAD_START);
1977 index2jdwp[EI_THREAD_END -EI_min] = JDWP_EVENT(THREAD_END);
1978 index2jdwp[EI_CLASS_PREPARE -EI_min] = JDWP_EVENT(CLASS_PREPARE);
1979 index2jdwp[EI_GC_FINISH -EI_min] = JDWP_EVENT(CLASS_UNLOAD);
1980 index2jdwp[EI_CLASS_LOAD -EI_min] = JDWP_EVENT(CLASS_LOAD);
1981 index2jdwp[EI_FIELD_ACCESS -EI_min] = JDWP_EVENT(FIELD_ACCESS);
1982 index2jdwp[EI_FIELD_MODIFICATION -EI_min] = JDWP_EVENT(FIELD_MODIFICATION);
1983 index2jdwp[EI_EXCEPTION_CATCH -EI_min] = JDWP_EVENT(EXCEPTION_CATCH);
1984 index2jdwp[EI_METHOD_ENTRY -EI_min] = JDWP_EVENT(METHOD_ENTRY);
1985 index2jdwp[EI_METHOD_EXIT -EI_min] = JDWP_EVENT(METHOD_EXIT);
1986 index2jdwp[EI_MONITOR_CONTENDED_ENTER -EI_min] = JDWP_EVENT(MONITOR_CONTENDED_ENTER);
1987 index2jdwp[EI_MONITOR_CONTENDED_ENTERED -EI_min] = JDWP_EVENT(MONITOR_CONTENDED_ENTERED);
1988 index2jdwp[EI_MONITOR_WAIT -EI_min] = JDWP_EVENT(MONITOR_WAIT);
1989 index2jdwp[EI_MONITOR_WAITED -EI_min] = JDWP_EVENT(MONITOR_WAITED);
1990 index2jdwp[EI_VM_INIT -EI_min] = JDWP_EVENT(VM_INIT);
1991 index2jdwp[EI_VM_DEATH -EI_min] = JDWP_EVENT(VM_DEATH);
1992 }
1993
1994 jdwpEvent
1995 eventIndex2jdwp(EventIndex i)
1996 {
1997 if ( i < EI_min || i > EI_max ) {
1998 EXIT_ERROR(AGENT_ERROR_INVALID_INDEX,"bad EventIndex");
1999 }
2000 return index2jdwp[i-EI_min];
2001 }
2002
2003 jvmtiEvent
2004 eventIndex2jvmti(EventIndex i)
2005 {
2006 if ( i < EI_min || i > EI_max ) {
2007 EXIT_ERROR(AGENT_ERROR_INVALID_INDEX,"bad EventIndex");
2008 }
2009 return index2jvmti[i-EI_min];
2010 }
2011
2012 EventIndex
2013 jdwp2EventIndex(jdwpEvent eventType)
2014 {
2015 switch ( eventType ) {
2016 case JDWP_EVENT(SINGLE_STEP):
2017 return EI_SINGLE_STEP;
2018 case JDWP_EVENT(BREAKPOINT):
2019 return EI_BREAKPOINT;
2020 case JDWP_EVENT(FRAME_POP):
2021 return EI_FRAME_POP;
2022 case JDWP_EVENT(EXCEPTION):
2023 return EI_EXCEPTION;
2024 case JDWP_EVENT(THREAD_START):
2025 return EI_THREAD_START;
2026 case JDWP_EVENT(THREAD_END):
2027 return EI_THREAD_END;
2028 case JDWP_EVENT(CLASS_PREPARE):
2029 return EI_CLASS_PREPARE;
2030 case JDWP_EVENT(CLASS_UNLOAD):
2031 return EI_GC_FINISH;
2032 case JDWP_EVENT(CLASS_LOAD):
2033 return EI_CLASS_LOAD;
2034 case JDWP_EVENT(FIELD_ACCESS):
2035 return EI_FIELD_ACCESS;
2036 case JDWP_EVENT(FIELD_MODIFICATION):
2037 return EI_FIELD_MODIFICATION;
2038 case JDWP_EVENT(EXCEPTION_CATCH):
2039 return EI_EXCEPTION_CATCH;
2040 case JDWP_EVENT(METHOD_ENTRY):
2041 return EI_METHOD_ENTRY;
2042 case JDWP_EVENT(METHOD_EXIT):
2043 return EI_METHOD_EXIT;
2044 case JDWP_EVENT(METHOD_EXIT_WITH_RETURN_VALUE):
2045 return EI_METHOD_EXIT;
2046 case JDWP_EVENT(MONITOR_CONTENDED_ENTER):
2047 return EI_MONITOR_CONTENDED_ENTER;
2048 case JDWP_EVENT(MONITOR_CONTENDED_ENTERED):
2049 return EI_MONITOR_CONTENDED_ENTERED;
2050 case JDWP_EVENT(MONITOR_WAIT):
2051 return EI_MONITOR_WAIT;
2052 case JDWP_EVENT(MONITOR_WAITED):
2053 return EI_MONITOR_WAITED;
2054 case JDWP_EVENT(VM_INIT):
2055 return EI_VM_INIT;
2056 case JDWP_EVENT(VM_DEATH):
2057 return EI_VM_DEATH;
2058 default:
2059 break;
2060 }
2061
2062 /*
2063 * Event type not recognized - don't exit with error as caller
2064 * may wish to return error to debugger.
2065 */
2066 return (EventIndex)0;
2067 }
2068
2069 EventIndex
2070 jvmti2EventIndex(jvmtiEvent kind)
2071 {
2072 switch ( kind ) {
2073 case JVMTI_EVENT_SINGLE_STEP:
2074 return EI_SINGLE_STEP;
2075 case JVMTI_EVENT_BREAKPOINT:
2076 return EI_BREAKPOINT;
2077 case JVMTI_EVENT_FRAME_POP:
2078 return EI_FRAME_POP;
2079 case JVMTI_EVENT_EXCEPTION:
2080 return EI_EXCEPTION;
2081 case JVMTI_EVENT_THREAD_START:
2082 return EI_THREAD_START;
2083 case JVMTI_EVENT_THREAD_END:
2084 return EI_THREAD_END;
2085 case JVMTI_EVENT_CLASS_PREPARE:
2086 return EI_CLASS_PREPARE;
2087 case JVMTI_EVENT_GARBAGE_COLLECTION_FINISH:
2088 return EI_GC_FINISH;
2089 case JVMTI_EVENT_CLASS_LOAD:
2090 return EI_CLASS_LOAD;
2091 case JVMTI_EVENT_FIELD_ACCESS:
2092 return EI_FIELD_ACCESS;
2093 case JVMTI_EVENT_FIELD_MODIFICATION:
2094 return EI_FIELD_MODIFICATION;
2095 case JVMTI_EVENT_EXCEPTION_CATCH:
2096 return EI_EXCEPTION_CATCH;
2097 case JVMTI_EVENT_METHOD_ENTRY:
2098 return EI_METHOD_ENTRY;
2099 case JVMTI_EVENT_METHOD_EXIT:
2100 return EI_METHOD_EXIT;
2101 /*
2102 * There is no JVMTI_EVENT_METHOD_EXIT_WITH_RETURN_VALUE.
2103 * The normal JVMTI_EVENT_METHOD_EXIT always contains the return value.
2104 */
2105 case JVMTI_EVENT_MONITOR_CONTENDED_ENTER:
2106 return EI_MONITOR_CONTENDED_ENTER;
2107 case JVMTI_EVENT_MONITOR_CONTENDED_ENTERED:
2108 return EI_MONITOR_CONTENDED_ENTERED;
2109 case JVMTI_EVENT_MONITOR_WAIT:
2110 return EI_MONITOR_WAIT;
2111 case JVMTI_EVENT_MONITOR_WAITED:
2112 return EI_MONITOR_WAITED;
2113 case JVMTI_EVENT_VM_INIT:
2114 return EI_VM_INIT;
2115 case JVMTI_EVENT_VM_DEATH:
2116 return EI_VM_DEATH;
2117 default:
2118 EXIT_ERROR(AGENT_ERROR_INVALID_INDEX,"JVMTI to EventIndex mapping");
2119 break;
2120 }
2121 return (EventIndex)0;
2122 }
2123
2124 /* This routine is commonly used, maps jvmti and agent errors to the best
2125 * jdwp error code we can map to.
2126 */
2127 jdwpError
2128 map2jdwpError(jvmtiError error)
2129 {
2130 switch ( (int)error ) {
2131 case JVMTI_ERROR_NONE:
2132 return JDWP_ERROR(NONE);
2133 case AGENT_ERROR_INVALID_THREAD:
2134 case JVMTI_ERROR_INVALID_THREAD:
2135 return JDWP_ERROR(INVALID_THREAD);
2136 case JVMTI_ERROR_INVALID_THREAD_GROUP:
2137 return JDWP_ERROR(INVALID_THREAD_GROUP);
2138 case JVMTI_ERROR_INVALID_PRIORITY:
2139 return JDWP_ERROR(INVALID_PRIORITY);
2140 case JVMTI_ERROR_THREAD_NOT_SUSPENDED:
2141 return JDWP_ERROR(THREAD_NOT_SUSPENDED);
2142 case JVMTI_ERROR_THREAD_SUSPENDED:
2143 return JDWP_ERROR(THREAD_SUSPENDED);
2144 case JVMTI_ERROR_THREAD_NOT_ALIVE:
2145 return JDWP_ERROR(INVALID_THREAD);
2146 case AGENT_ERROR_INVALID_OBJECT:
2147 case JVMTI_ERROR_INVALID_OBJECT:
2148 return JDWP_ERROR(INVALID_OBJECT);
2149 case JVMTI_ERROR_INVALID_CLASS:
2150 return JDWP_ERROR(INVALID_CLASS);
2151 case JVMTI_ERROR_CLASS_NOT_PREPARED:
2152 return JDWP_ERROR(CLASS_NOT_PREPARED);
2153 case JVMTI_ERROR_INVALID_METHODID:
2154 return JDWP_ERROR(INVALID_METHODID);
2155 case JVMTI_ERROR_INVALID_LOCATION:
2156 return JDWP_ERROR(INVALID_LOCATION);
2157 case JVMTI_ERROR_INVALID_FIELDID:
2158 return JDWP_ERROR(INVALID_FIELDID);
2159 case AGENT_ERROR_NO_MORE_FRAMES:
2160 case JVMTI_ERROR_NO_MORE_FRAMES:
2161 return JDWP_ERROR(NO_MORE_FRAMES);
2162 case JVMTI_ERROR_OPAQUE_FRAME:
2163 return JDWP_ERROR(OPAQUE_FRAME);
2164 case JVMTI_ERROR_TYPE_MISMATCH:
2165 return JDWP_ERROR(TYPE_MISMATCH);
2166 case JVMTI_ERROR_INVALID_SLOT:
2167 return JDWP_ERROR(INVALID_SLOT);
2168 case JVMTI_ERROR_DUPLICATE:
2169 return JDWP_ERROR(DUPLICATE);
2170 case JVMTI_ERROR_NOT_FOUND:
2171 return JDWP_ERROR(NOT_FOUND);
2172 case JVMTI_ERROR_INVALID_MONITOR:
2173 return JDWP_ERROR(INVALID_MONITOR);
2174 case JVMTI_ERROR_NOT_MONITOR_OWNER:
2175 return JDWP_ERROR(NOT_MONITOR_OWNER);
2176 case JVMTI_ERROR_INTERRUPT:
2177 return JDWP_ERROR(INTERRUPT);
2178 case JVMTI_ERROR_INVALID_CLASS_FORMAT:
2179 return JDWP_ERROR(INVALID_CLASS_FORMAT);
2180 case JVMTI_ERROR_CIRCULAR_CLASS_DEFINITION:
2181 return JDWP_ERROR(CIRCULAR_CLASS_DEFINITION);
2182 case JVMTI_ERROR_FAILS_VERIFICATION:
2183 return JDWP_ERROR(FAILS_VERIFICATION);
2184 case JVMTI_ERROR_INVALID_TYPESTATE:
2185 return JDWP_ERROR(INVALID_TYPESTATE);
2186 case JVMTI_ERROR_UNSUPPORTED_VERSION:
2187 return JDWP_ERROR(UNSUPPORTED_VERSION);
2188 case JVMTI_ERROR_NAMES_DONT_MATCH:
2189 return JDWP_ERROR(NAMES_DONT_MATCH);
2190 case AGENT_ERROR_NULL_POINTER:
2191 case JVMTI_ERROR_NULL_POINTER:
2192 return JDWP_ERROR(NULL_POINTER);
2193 case JVMTI_ERROR_ABSENT_INFORMATION:
2194 return JDWP_ERROR(ABSENT_INFORMATION);
2195 case AGENT_ERROR_INVALID_EVENT_TYPE:
2196 case JVMTI_ERROR_INVALID_EVENT_TYPE:
2197 return JDWP_ERROR(INVALID_EVENT_TYPE);
2198 case AGENT_ERROR_ILLEGAL_ARGUMENT:
2199 case JVMTI_ERROR_ILLEGAL_ARGUMENT:
2200 return JDWP_ERROR(ILLEGAL_ARGUMENT);
2201 case JVMTI_ERROR_OUT_OF_MEMORY:
2202 case AGENT_ERROR_OUT_OF_MEMORY:
2203 return JDWP_ERROR(OUT_OF_MEMORY);
2204 case JVMTI_ERROR_ACCESS_DENIED:
2205 return JDWP_ERROR(ACCESS_DENIED);
2206 case JVMTI_ERROR_WRONG_PHASE:
2207 case AGENT_ERROR_VM_DEAD:
2208 case AGENT_ERROR_NO_JNI_ENV:
2209 return JDWP_ERROR(VM_DEAD);
2210 case AGENT_ERROR_JNI_EXCEPTION:
2211 case JVMTI_ERROR_UNATTACHED_THREAD:
2212 return JDWP_ERROR(UNATTACHED_THREAD);
2213 case JVMTI_ERROR_NOT_AVAILABLE:
2214 case JVMTI_ERROR_MUST_POSSESS_CAPABILITY:
2215 return JDWP_ERROR(NOT_IMPLEMENTED);
2216 case JVMTI_ERROR_UNSUPPORTED_REDEFINITION_HIERARCHY_CHANGED:
2217 return JDWP_ERROR(HIERARCHY_CHANGE_NOT_IMPLEMENTED);
2218 case JVMTI_ERROR_UNSUPPORTED_REDEFINITION_METHOD_DELETED:
2219 return JDWP_ERROR(DELETE_METHOD_NOT_IMPLEMENTED);
2220 case JVMTI_ERROR_UNSUPPORTED_REDEFINITION_METHOD_ADDED:
2221 return JDWP_ERROR(ADD_METHOD_NOT_IMPLEMENTED);
2222 case JVMTI_ERROR_UNSUPPORTED_REDEFINITION_SCHEMA_CHANGED:
2223 return JDWP_ERROR(SCHEMA_CHANGE_NOT_IMPLEMENTED);
2224 case JVMTI_ERROR_UNSUPPORTED_REDEFINITION_CLASS_MODIFIERS_CHANGED:
2225 return JDWP_ERROR(CLASS_MODIFIERS_CHANGE_NOT_IMPLEMENTED);
2226 case JVMTI_ERROR_UNSUPPORTED_REDEFINITION_METHOD_MODIFIERS_CHANGED:
2227 return JDWP_ERROR(METHOD_MODIFIERS_CHANGE_NOT_IMPLEMENTED);
2228 case AGENT_ERROR_NOT_CURRENT_FRAME:
2229 return JDWP_ERROR(NOT_CURRENT_FRAME);
2230 case AGENT_ERROR_INVALID_TAG:
2231 return JDWP_ERROR(INVALID_TAG);
2232 case AGENT_ERROR_ALREADY_INVOKING:
2233 return JDWP_ERROR(ALREADY_INVOKING);
2234 case AGENT_ERROR_INVALID_INDEX:
2235 return JDWP_ERROR(INVALID_INDEX);
2236 case AGENT_ERROR_INVALID_LENGTH:
2237 return JDWP_ERROR(INVALID_LENGTH);
2238 case AGENT_ERROR_INVALID_STRING:
2239 return JDWP_ERROR(INVALID_STRING);
2240 case AGENT_ERROR_INVALID_CLASS_LOADER:
2241 return JDWP_ERROR(INVALID_CLASS_LOADER);
2242 case AGENT_ERROR_INVALID_ARRAY:
2243 return JDWP_ERROR(INVALID_ARRAY);
2244 case AGENT_ERROR_TRANSPORT_LOAD:
2245 return JDWP_ERROR(TRANSPORT_LOAD);
2246 case AGENT_ERROR_TRANSPORT_INIT:
2247 return JDWP_ERROR(TRANSPORT_INIT);
2248 case AGENT_ERROR_NATIVE_METHOD:
2249 return JDWP_ERROR(NATIVE_METHOD);
2250 case AGENT_ERROR_INVALID_COUNT:
2251 return JDWP_ERROR(INVALID_COUNT);
2252 case AGENT_ERROR_INVALID_FRAMEID:
2253 return JDWP_ERROR(INVALID_FRAMEID);
2254 case JVMTI_ERROR_INTERNAL:
2255 case JVMTI_ERROR_INVALID_ENVIRONMENT:
2256 case AGENT_ERROR_INTERNAL:
2257 case AGENT_ERROR_JVMTI_INTERNAL:
2258 case AGENT_ERROR_JDWP_INTERNAL:
2259 return JDWP_ERROR(INTERNAL);
2260 default:
2261 break;
2262 }
2263 return JDWP_ERROR(INTERNAL);
2264 }
2265
2266 jint
2267 map2jdwpSuspendStatus(jint state)
2268 {
2269 jint status = 0;
2270 if ( ( state & JVMTI_THREAD_STATE_SUSPENDED ) != 0 ) {
2271 status = JDWP_SUSPEND_STATUS(SUSPENDED);
2272 }
2273 return status;
2274 }
2275
2276 jdwpThreadStatus
2277 map2jdwpThreadStatus(jint state)
2278 {
2279 jdwpThreadStatus status;
2280
2281 status = (jdwpThreadStatus)(-1);
2282
2283 if ( ! ( state & JVMTI_THREAD_STATE_ALIVE ) ) {
2284 if ( state & JVMTI_THREAD_STATE_TERMINATED ) {
2285 status = JDWP_THREAD_STATUS(ZOMBIE);
2286 } else {
2287 /* FIXUP? New JDWP #define for not started? */
2288 status = (jdwpThreadStatus)(-1);
2289 }
2290 } else {
2291 if ( state & JVMTI_THREAD_STATE_SLEEPING ) {
2292 status = JDWP_THREAD_STATUS(SLEEPING);
2293 } else if ( state & JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER ) {
2294 status = JDWP_THREAD_STATUS(MONITOR);
2295 } else if ( state & JVMTI_THREAD_STATE_WAITING ) {
2296 status = JDWP_THREAD_STATUS(WAIT);
2297 } else if ( state & JVMTI_THREAD_STATE_RUNNABLE ) {
2298 status = JDWP_THREAD_STATUS(RUNNING);
2299 }
2300 }
2301 return status;
2302 }
2303
2304 jint
2305 map2jdwpClassStatus(jint classStatus)
2306 {
2307 jint status = 0;
2308 if ( ( classStatus & JVMTI_CLASS_STATUS_VERIFIED ) != 0 ) {
2309 status |= JDWP_CLASS_STATUS(VERIFIED);
2310 }
2311 if ( ( classStatus & JVMTI_CLASS_STATUS_PREPARED ) != 0 ) {
2312 status |= JDWP_CLASS_STATUS(PREPARED);
2313 }
2314 if ( ( classStatus & JVMTI_CLASS_STATUS_INITIALIZED ) != 0 ) {
2315 status |= JDWP_CLASS_STATUS(INITIALIZED);
2316 }
2317 if ( ( classStatus & JVMTI_CLASS_STATUS_ERROR ) != 0 ) {
2318 status |= JDWP_CLASS_STATUS(ERROR);
2319 }
2320 return status;
2321 }
2322
2323 void
2324 log_debugee_location(const char *func,
2325 jthread thread, jmethodID method, jlocation location)
2326 {
2327 int logging_locations = LOG_TEST(JDWP_LOG_LOC);
2328
2329 if ( logging_locations ) {
2330 char *method_name;
2331 char *class_sig;
2332 jvmtiError error;
2333 jvmtiThreadInfo info;
2334 jint state;
2335
2336 /* Get thread information */
2337 info.name = NULL;
2338 error = FUNC_PTR(gdata->jvmti,GetThreadInfo)
2339 (gdata->jvmti, thread, &info);
2340 if ( error != JVMTI_ERROR_NONE) {
2341 info.name = NULL;
2342 }
2343 error = FUNC_PTR(gdata->jvmti,GetThreadState)
2344 (gdata->jvmti, thread, &state);
2345 if ( error != JVMTI_ERROR_NONE) {
2346 state = 0;
2347 }
2348
2349 /* Get method if necessary */
2350 if ( method==NULL ) {
2351 error = FUNC_PTR(gdata->jvmti,GetFrameLocation)
2352 (gdata->jvmti, thread, 0, &method, &location);
2353 if ( error != JVMTI_ERROR_NONE ) {
2354 method = NULL;
2355 location = 0;
2356 }
2357 }
2358
2359 /* Get method name */
2360 method_name = NULL;
2361 if ( method != NULL ) {
2362 error = methodSignature(method, &method_name, NULL, NULL);
2363 if ( error != JVMTI_ERROR_NONE ) {
2364 method_name = NULL;
2365 }
2366 }
2367
2368 /* Get class signature */
2369 class_sig = NULL;
2370 if ( method != NULL ) {
2371 jclass clazz;
2372
2373 error = methodClass(method, &clazz);
2374 if ( error == JVMTI_ERROR_NONE ) {
2375 error = classSignature(clazz, &class_sig, NULL);
2376 if ( error != JVMTI_ERROR_NONE ) {
2377 class_sig = NULL;
2378 }
2379 }
2380 }
2381
2382 /* Issue log message */
2383 LOG_LOC(("%s: debugee: thread=%p(%s:0x%x),method=%p(%s@%d;%s)",
2384 func,
2385 thread, info.name==NULL ? "?" : info.name, state,
2386 method, method_name==NULL ? "?" : method_name,
2387 (int)location, class_sig==NULL ? "?" : class_sig));
2388
2389 /* Free memory */
2390 if ( class_sig != NULL ) {
2391 jvmtiDeallocate(class_sig);
2392 }
2393 if ( method_name != NULL ) {
2394 jvmtiDeallocate(method_name);
2395 }
2396 if ( info.name != NULL ) {
2397 jvmtiDeallocate(info.name);
2398 }
2399 }
2400 }
2401
2402 /* ********************************************************************* */
2403 /* JDK 6.0: Use of new Heap Iteration functions */
2404 /* ********************************************************************* */
2405
2406 /* ********************************************************************* */
2407 /* Instances */
2408
2409 /* Structure to hold class instances heap iteration data (arg user_data) */
2410 typedef struct ClassInstancesData {
2411 jint instCount;
2412 jint maxInstances;
2413 jlong objTag;
2414 jvmtiError error;
2415 } ClassInstancesData;
2416
2417 /* Callback for instance object tagging (heap_reference_callback). */
2418 static jint JNICALL
2419 cbObjectTagInstance(jvmtiHeapReferenceKind reference_kind,
2420 const jvmtiHeapReferenceInfo* reference_info, jlong class_tag,
2421 jlong referrer_class_tag, jlong size,
2422 jlong* tag_ptr, jlong* referrer_tag_ptr, jint length, void* user_data)
2423 {
2424 ClassInstancesData *data;
2425
2426 /* Check data structure */
2427 data = (ClassInstancesData*)user_data;
2428 if (data == NULL) {
2429 data->error = AGENT_ERROR_ILLEGAL_ARGUMENT;
2430 return JVMTI_VISIT_ABORT;
2431 }
2432
2433 /* If we have tagged enough objects, just abort */
2434 if ( data->maxInstances != 0 && data->instCount >= data->maxInstances ) {
2435 return JVMTI_VISIT_ABORT;
2436 }
2437
2438 /* If tagged already, just continue */
2439 if ( (*tag_ptr) != (jlong)0 ) {
2440 return JVMTI_VISIT_OBJECTS;
2441 }
2442
2443 /* Tag the object so we don't count it again, and so we can retrieve it */
2444 (*tag_ptr) = data->objTag;
2445 data->instCount++;
2446 return JVMTI_VISIT_OBJECTS;
2447 }
2448
2449 /* Get instances for one class */
2450 jvmtiError
2451 classInstances(jclass klass, ObjectBatch *instances, int maxInstances)
2452 {
2453 ClassInstancesData data;
2454 jvmtiHeapCallbacks heap_callbacks;
2455 jvmtiError error;
2456 jvmtiEnv *jvmti;
2457
2458 /* Check interface assumptions */
2459
2460 if (klass == NULL) {
2461 return AGENT_ERROR_INVALID_OBJECT;
2462 }
2463
2464 if ( maxInstances < 0 || instances == NULL) {
2465 return AGENT_ERROR_ILLEGAL_ARGUMENT;
2466 }
2467
2468 /* Initialize return information */
2469 instances->count = 0;
2470 instances->objects = NULL;
2471
2472 /* Get jvmti environment to use */
2473 jvmti = getSpecialJvmti();
2474 if ( jvmti == NULL ) {
2475 return AGENT_ERROR_INTERNAL;
2476 }
2477
2478 /* Setup data to passed around the callbacks */
2479 data.instCount = 0;
2480 data.maxInstances = maxInstances;
2481 data.objTag = (jlong)1;
2482 data.error = JVMTI_ERROR_NONE;
2483
2484 /* Clear out callbacks structure */
2485 (void)memset(&heap_callbacks,0,sizeof(heap_callbacks));
2486
2487 /* Set the callbacks we want */
2488 heap_callbacks.heap_reference_callback = &cbObjectTagInstance;
2489
2490 /* Follow references, no initiating object, just this class, all objects */
2491 error = JVMTI_FUNC_PTR(jvmti,FollowReferences)
2492 (jvmti, 0, klass, NULL, &heap_callbacks, &data);
2493 if ( error == JVMTI_ERROR_NONE ) {
2494 error = data.error;
2495 }
2496
2497 /* Get all the instances now that they are tagged */
2498 if ( error == JVMTI_ERROR_NONE ) {
2499 error = JVMTI_FUNC_PTR(jvmti,GetObjectsWithTags)
2500 (jvmti, 1, &(data.objTag), &(instances->count),
2501 &(instances->objects), NULL);
2502 /* Verify we got the count we expected */
2503 if ( data.instCount != instances->count ) {
2504 error = AGENT_ERROR_INTERNAL;
2505 }
2506 }
2507
2508 /* Dispose of any special jvmti environment */
2509 (void)JVMTI_FUNC_PTR(jvmti,DisposeEnvironment)(jvmti);
2510 return error;
2511 }
2512
2513 /* ********************************************************************* */
2514 /* Instance counts. */
2515
2516 /* Macros to convert a class or instance tag to an index and back again */
2517 #define INDEX2CLASSTAG(i) ((jlong)((i)+1))
2518 #define CLASSTAG2INDEX(t) (((int)(t))-1)
2519 #define JLONG_ABS(x) (((x)<(jlong)0)?-(x):(x))
2520
2521 /* Structure to hold class count heap traversal data (arg user_data) */
2522 typedef struct ClassCountData {
2523 int classCount;
2524 jlong *counts;
2525 jlong negObjTag;
2526 jvmtiError error;
2527 } ClassCountData;
2528
2529 /* Two different cbObjectCounter's, one for FollowReferences, one for
2530 * IterateThroughHeap. Pick a card, any card.
2531 */
2532
2533 /* Callback for object count heap traversal (heap_reference_callback) */
2534 static jint JNICALL
2535 cbObjectCounterFromRef(jvmtiHeapReferenceKind reference_kind,
2536 const jvmtiHeapReferenceInfo* reference_info, jlong class_tag,
2537 jlong referrer_class_tag, jlong size,
2538 jlong* tag_ptr, jlong* referrer_tag_ptr, jint length, void* user_data)
2539 {
2540 ClassCountData *data;
2541 int index;
2542 jlong jindex;
2543 jlong tag;
2544
2545 /* Check data structure */
2546 data = (ClassCountData*)user_data;
2547 if (data == NULL) {
2548 data->error = AGENT_ERROR_ILLEGAL_ARGUMENT;
2549 return JVMTI_VISIT_ABORT;
2550 }
2551
2552 /* Classes with no class_tag should have been filtered out. */
2553 if ( class_tag == (jlong)0 ) {
2554 data->error = AGENT_ERROR_INTERNAL;
2555 return JVMTI_VISIT_ABORT;
2556 }
2557
2558 /* Class tag not one we really want (jclass not in supplied list) */
2559 if ( class_tag == data->negObjTag ) {
2560 return JVMTI_VISIT_OBJECTS;
2561 }
2562
2563 /* If object tag is negative, just continue, we counted it */
2564 tag = (*tag_ptr);
2565 if ( tag < (jlong)0 ) {
2566 return JVMTI_VISIT_OBJECTS;
2567 }
2568
2569 /* Tag the object with a negative value just so we don't count it again */
2570 if ( tag == (jlong)0 ) {
2571 /* This object had no tag value, so we give it the negObjTag value */
2572 (*tag_ptr) = data->negObjTag;
2573 } else {
2574 /* If this object had a positive tag value, it must be one of the
2575 * jclass objects we tagged. We need to preserve the value of
2576 * this tag for later objects that might have this as a class
2577 * tag, so we just make the existing tag value negative.
2578 */
2579 (*tag_ptr) = -tag;
2580 }
2581
2582 /* Absolute value of class tag is an index into the counts[] array */
2583 jindex = JLONG_ABS(class_tag);
2584 index = CLASSTAG2INDEX(jindex);
2585 if (index < 0 || index >= data->classCount) {
2586 data->error = AGENT_ERROR_ILLEGAL_ARGUMENT;
2587 return JVMTI_VISIT_ABORT;
2588 }
2589
2590 /* Bump instance count on this class */
2591 data->counts[index]++;
2592 return JVMTI_VISIT_OBJECTS;
2593 }
2594
2595 /* Callback for instance count heap traversal (heap_iteration_callback) */
2596 static jint JNICALL
2597 cbObjectCounter(jlong class_tag, jlong size, jlong* tag_ptr, jint length,
2598 void* user_data)
2599 {
2600 ClassCountData *data;
2601 int index;
2602
2603 /* Check data structure */
2604 data = (ClassCountData*)user_data;
2605 if (data == NULL) {
2606 data->error = AGENT_ERROR_ILLEGAL_ARGUMENT;
2607 return JVMTI_VISIT_ABORT;
2608 }
2609
2610 /* Classes with no tag should be filtered out. */
2611 if ( class_tag == (jlong)0 ) {
2612 data->error = AGENT_ERROR_INTERNAL;
2613 return JVMTI_VISIT_ABORT;
2614 }
2615
2616 /* Class tag is actually an index into data arrays */
2617 index = CLASSTAG2INDEX(class_tag);
2618 if (index < 0 || index >= data->classCount) {
2619 data->error = AGENT_ERROR_ILLEGAL_ARGUMENT;
2620 return JVMTI_VISIT_ABORT;
2621 }
2622
2623 /* Bump instance count on this class */
2624 data->counts[index]++;
2625 return JVMTI_VISIT_OBJECTS;
2626 }
2627
2628 /* Get instance counts for a set of classes */
2629 jvmtiError
2630 classInstanceCounts(jint classCount, jclass *classes, jlong *counts)
2631 {
2632 jvmtiHeapCallbacks heap_callbacks;
2633 ClassCountData data;
2634 jvmtiError error;
2635 jvmtiEnv *jvmti;
2636 int i;
2637
2638 /* Check interface assumptions */
2639 if ( classes == NULL || classCount <= 0 || counts == NULL ) {
2640 return AGENT_ERROR_ILLEGAL_ARGUMENT;
2641 }
2642
2643 /* Initialize return information */
2644 for ( i = 0 ; i < classCount ; i++ ) {
2645 counts[i] = (jlong)0;
2646 }
2647
2648 /* Get jvmti environment to use */
2649 jvmti = getSpecialJvmti();
2650 if ( jvmti == NULL ) {
2651 return AGENT_ERROR_INTERNAL;
2652 }
2653
2654 /* Setup class data structure */
2655 data.error = JVMTI_ERROR_NONE;
2656 data.classCount = classCount;
2657 data.counts = counts;
2658
2659 error = JVMTI_ERROR_NONE;
2660 /* Set tags on classes, use index in classes[] as the tag value. */
2661 error = JVMTI_ERROR_NONE;
2662 for ( i = 0 ; i < classCount ; i++ ) {
2663 if (classes[i] != NULL) {
2664 jlong tag;
2665
2666 tag = INDEX2CLASSTAG(i);
2667 error = JVMTI_FUNC_PTR(jvmti,SetTag) (jvmti, classes[i], tag);
2668 if ( error != JVMTI_ERROR_NONE ) {
2669 break;
2670 }
2671 }
2672 }
2673
2674 /* Traverse heap, two ways to do this for instance counts. */
2675 if ( error == JVMTI_ERROR_NONE ) {
2676
2677 /* Clear out callbacks structure */
2678 (void)memset(&heap_callbacks,0,sizeof(heap_callbacks));
2679
2680 /* Check debug flags to see how to do this. */
2681 if ( (gdata->debugflags & USE_ITERATE_THROUGH_HEAP) == 0 ) {
2682
2683 /* Using FollowReferences only gives us live objects, but we
2684 * need to tag the objects to avoid counting them twice since
2685 * the callback is per reference.
2686 * The jclass objects have been tagged with their index in the
2687 * supplied list, and that tag may flip to negative if it
2688 * is also an object of interest.
2689 * All other objects being counted that weren't in the
2690 * supplied classes list will have a negative classCount
2691 * tag value. So all objects counted will have negative tags.
2692 * If the absolute tag value is an index in the supplied
2693 * list, then it's one of the supplied classes.
2694 */
2695 data.negObjTag = -INDEX2CLASSTAG(classCount);
2696
2697 /* Setup callbacks, only using object reference callback */
2698 heap_callbacks.heap_reference_callback = &cbObjectCounterFromRef;
2699
2700 /* Follow references, no initiating object, tagged classes only */
2701 error = JVMTI_FUNC_PTR(jvmti,FollowReferences)
2702 (jvmti, JVMTI_HEAP_FILTER_CLASS_UNTAGGED,
2703 NULL, NULL, &heap_callbacks, &data);
2704
2705 } else {
2706
2707 /* Using IterateThroughHeap means that we will visit each object
2708 * once, so no special tag tricks here. Just simple counting.
2709 * However in this case the object might not be live, so we do
2710 * a GC beforehand to make sure we minimize this.
2711 */
2712
2713 /* FIXUP: Need some kind of trigger here to avoid excessive GC's? */
2714 error = JVMTI_FUNC_PTR(jvmti,ForceGarbageCollection)(jvmti);
2715 if ( error != JVMTI_ERROR_NONE ) {
2716
2717 /* Setup callbacks, just need object callback */
2718 heap_callbacks.heap_iteration_callback = &cbObjectCounter;
2719
2720 /* Iterate through entire heap, tagged classes only */
2721 error = JVMTI_FUNC_PTR(jvmti,IterateThroughHeap)
2722 (jvmti, JVMTI_HEAP_FILTER_CLASS_UNTAGGED,
2723 NULL, &heap_callbacks, &data);
2724
2725 }
2726 }
2727
2728 /* Use data error if needed */
2729 if ( error == JVMTI_ERROR_NONE ) {
2730 error = data.error;
2731 }
2732
2733 }
2734
2735 /* Dispose of any special jvmti environment */
2736 (void)JVMTI_FUNC_PTR(jvmti,DisposeEnvironment)(jvmti);
2737 return error;
2738 }
2739
2740 /* ********************************************************************* */
2741 /* Referrers */
2742
2743 /* Structure to hold object referrer heap traversal data (arg user_data) */
2744 typedef struct ReferrerData {
2745 int refCount;
2746 int maxObjects;
2747 jlong refTag;
2748 jlong objTag;
2749 jboolean selfRef;
2750 jvmtiError error;
2751 } ReferrerData;
2752
2753 /* Callback for referrers object tagging (heap_reference_callback). */
2754 static jint JNICALL
2755 cbObjectTagReferrer(jvmtiHeapReferenceKind reference_kind,
2756 const jvmtiHeapReferenceInfo* reference_info, jlong class_tag,
2757 jlong referrer_class_tag, jlong size,
2758 jlong* tag_ptr, jlong* referrer_tag_ptr, jint length, void* user_data)
2759 {
2760 ReferrerData *data;
2761
2762 /* Check data structure */
2763 data = (ReferrerData*)user_data;
2764 if (data == NULL) {
2765 data->error = AGENT_ERROR_ILLEGAL_ARGUMENT;
2766 return JVMTI_VISIT_ABORT;
2767 }
2768
2769 /* If we have tagged enough objects, just abort */
2770 if ( data->maxObjects != 0 && data->refCount >= data->maxObjects ) {
2771 return JVMTI_VISIT_ABORT;
2772 }
2773
2774 /* If not of interest, just continue */
2775 if ( (*tag_ptr) != data->objTag ) {
2776 return JVMTI_VISIT_OBJECTS;
2777 }
2778
2779 /* Self reference that we haven't counted? */
2780 if ( tag_ptr == referrer_tag_ptr ) {
2781 if ( data->selfRef == JNI_FALSE ) {
2782 data->selfRef = JNI_TRUE;
2783 data->refCount++;
2784 }
2785 return JVMTI_VISIT_OBJECTS;
2786 }
2787
2788 /* If the referrer can be tagged, and hasn't been tagged, tag it */
2789 if ( referrer_tag_ptr != NULL ) {
2790 if ( (*referrer_tag_ptr) == (jlong)0 ) {
2791 *referrer_tag_ptr = data->refTag;
2792 data->refCount++;
2793 }
2794 }
2795 return JVMTI_VISIT_OBJECTS;
2796 }
2797
2798 /* Heap traversal to find referrers of an object */
2799 jvmtiError
2800 objectReferrers(jobject obj, ObjectBatch *referrers, int maxObjects)
2801 {
2802 jvmtiHeapCallbacks heap_callbacks;
2803 ReferrerData data;
2804 jvmtiError error;
2805 jvmtiEnv *jvmti;
2806
2807 /* Check interface assumptions */
2808 if (obj == NULL) {
2809 return AGENT_ERROR_INVALID_OBJECT;
2810 }
2811 if (referrers == NULL || maxObjects < 0 ) {
2812 return AGENT_ERROR_ILLEGAL_ARGUMENT;
2813 }
2814
2815 /* Initialize return information */
2816 referrers->count = 0;
2817 referrers->objects = NULL;
2818
2819 /* Get jvmti environment to use */
2820 jvmti = getSpecialJvmti();
2821 if ( jvmti == NULL ) {
2822 return AGENT_ERROR_INTERNAL;
2823 }
2824
2825 /* Fill in the data structure passed around the callbacks */
2826 data.refCount = 0;
2827 data.maxObjects = maxObjects;
2828 data.objTag = (jlong)1;
2829 data.refTag = (jlong)2;
2830 data.selfRef = JNI_FALSE;
2831 data.error = JVMTI_ERROR_NONE;
2832
2833 /* Tag the object of interest */
2834 error = JVMTI_FUNC_PTR(jvmti,SetTag) (jvmti, obj, data.objTag);
2835
2836 /* No need to go any further if we can't tag the object */
2837 if ( error == JVMTI_ERROR_NONE ) {
2838
2839 /* Clear out callbacks structure */
2840 (void)memset(&heap_callbacks,0,sizeof(heap_callbacks));
2841
2842 /* Setup callbacks we want */
2843 heap_callbacks.heap_reference_callback = &cbObjectTagReferrer;
2844
2845 /* Follow references, no initiating object, all classes, 1 tagged objs */
2846 error = JVMTI_FUNC_PTR(jvmti,FollowReferences)
2847 (jvmti, JVMTI_HEAP_FILTER_UNTAGGED,
2848 NULL, NULL, &heap_callbacks, &data);
2849
2850 /* Use data error if needed */
2851 if ( error == JVMTI_ERROR_NONE ) {
2852 error = data.error;
2853 }
2854
2855 }
2856
2857 /* Watch out for self-reference */
2858 if ( error == JVMTI_ERROR_NONE && data.selfRef == JNI_TRUE ) {
2859 /* Tag itself as a referer */
2860 error = JVMTI_FUNC_PTR(jvmti,SetTag) (jvmti, obj, data.refTag);
2861 }
2862
2863 /* Get the jobjects for the tagged referrer objects. */
2864 if ( error == JVMTI_ERROR_NONE ) {
2865 error = JVMTI_FUNC_PTR(jvmti,GetObjectsWithTags)
2866 (jvmti, 1, &(data.refTag), &(referrers->count),
2867 &(referrers->objects), NULL);
2868 /* Verify we got the count we expected */
2869 if ( data.refCount != referrers->count ) {
2870 error = AGENT_ERROR_INTERNAL;
2871 }
2872 }
2873
2874 /* Dispose of any special jvmti environment */
2875 (void)JVMTI_FUNC_PTR(jvmti,DisposeEnvironment)(jvmti);
2876 return error;
2877 }