1 /*
2 * Copyright (c) 1998, 2019, 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 if (c == '.') {
996 // class signature of a hidden class is "Ljava/lang/Foo.1234;"
997 // map to "java.lang.Foo/1234"
998 *(p-1) = '/';
999 } else {
1000 *(p-1) = c;
1001 }
1002 p++;
1003 }
1004 *(p-1) = '\0';
1005 }
1006
1007 static void
1008 handleInterrupt(void)
1009 {
1010 /*
1011 * An interrupt is handled:
1012 *
1013 * 1) for running application threads by deferring the interrupt
1014 * until the current event handler has concluded.
1015 *
1016 * 2) for debugger threads by ignoring the interrupt; this is the
1017 * most robust solution since debugger threads don't use interrupts
1018 * to signal any condition.
1019 *
1020 * 3) for application threads that have not started or already
1021 * ended by ignoring the interrupt. In the former case, the application
1022 * is relying on timing to determine whether or not the thread sees
1023 * the interrupt; in the latter case, the interrupt is meaningless.
1024 */
1025 jthread thread = threadControl_currentThread();
1026 if ((thread != NULL) && (!threadControl_isDebugThread(thread))) {
1027 threadControl_setPendingInterrupt(thread);
1028 }
1029 }
1030
1031 static jvmtiError
1032 ignore_vm_death(jvmtiError error)
1033 {
1034 if (error == JVMTI_ERROR_WRONG_PHASE) {
1035 LOG_MISC(("VM_DEAD, in debugMonitor*()?"));
1036 return JVMTI_ERROR_NONE; /* JVMTI does this, not JVMDI? */
1037 }
1038 return error;
1039 }
1040
1041 void
1042 debugMonitorEnter(jrawMonitorID monitor)
1043 {
1044 jvmtiError error;
1045 while (JNI_TRUE) {
1046 error = FUNC_PTR(gdata->jvmti,RawMonitorEnter)
1047 (gdata->jvmti, monitor);
1048 error = ignore_vm_death(error);
1049 if (error == JVMTI_ERROR_INTERRUPT) {
1050 handleInterrupt();
1051 } else {
1052 break;
1053 }
1054 }
1055 if (error != JVMTI_ERROR_NONE) {
1056 EXIT_ERROR(error, "on raw monitor enter");
1057 }
1058 }
1059
1060 void
1061 debugMonitorExit(jrawMonitorID monitor)
1062 {
1063 jvmtiError error;
1064
1065 error = FUNC_PTR(gdata->jvmti,RawMonitorExit)
1066 (gdata->jvmti, monitor);
1067 error = ignore_vm_death(error);
1068 if (error != JVMTI_ERROR_NONE) {
1069 EXIT_ERROR(error, "on raw monitor exit");
1070 }
1071 }
1072
1073 void
1074 debugMonitorWait(jrawMonitorID monitor)
1075 {
1076 jvmtiError error;
1077 error = FUNC_PTR(gdata->jvmti,RawMonitorWait)
1078 (gdata->jvmti, monitor, ((jlong)(-1)));
1079
1080 /*
1081 * According to the JLS (17.8), here we have
1082 * either :
1083 * a- been notified
1084 * b- gotten a suprious wakeup
1085 * c- been interrupted
1086 * If both a and c have happened, the VM must choose
1087 * which way to return - a or c. If it chooses c
1088 * then the notify is gone - either to some other
1089 * thread that is also waiting, or it is dropped
1090 * on the floor.
1091 *
1092 * a is what we expect. b won't hurt us any -
1093 * callers should be programmed to handle
1094 * spurious wakeups. In case of c,
1095 * then the interrupt has been cleared, but
1096 * we don't want to consume it. It came from
1097 * user code and is intended for user code, not us.
1098 * So, we will remember that the interrupt has
1099 * occurred and re-activate it when this thread
1100 * goes back into user code.
1101 * That being said, what do we do here? Since
1102 * we could have been notified too, here we will
1103 * just pretend that we have been. It won't hurt
1104 * anything to return in the same way as if
1105 * we were notified since callers have to be able to
1106 * handle spurious wakeups anyway.
1107 */
1108 if (error == JVMTI_ERROR_INTERRUPT) {
1109 handleInterrupt();
1110 error = JVMTI_ERROR_NONE;
1111 }
1112 error = ignore_vm_death(error);
1113 if (error != JVMTI_ERROR_NONE) {
1114 EXIT_ERROR(error, "on raw monitor wait");
1115 }
1116 }
1117
1118 void
1119 debugMonitorTimedWait(jrawMonitorID monitor, jlong millis)
1120 {
1121 jvmtiError error;
1122 error = FUNC_PTR(gdata->jvmti,RawMonitorWait)
1123 (gdata->jvmti, monitor, millis);
1124 if (error == JVMTI_ERROR_INTERRUPT) {
1125 /* See comment above */
1126 handleInterrupt();
1127 error = JVMTI_ERROR_NONE;
1128 }
1129 error = ignore_vm_death(error);
1130 if (error != JVMTI_ERROR_NONE) {
1131 EXIT_ERROR(error, "on raw monitor timed wait");
1132 }
1133 }
1134
1135 void
1136 debugMonitorNotify(jrawMonitorID monitor)
1137 {
1138 jvmtiError error;
1139
1140 error = FUNC_PTR(gdata->jvmti,RawMonitorNotify)
1141 (gdata->jvmti, monitor);
1142 error = ignore_vm_death(error);
1143 if (error != JVMTI_ERROR_NONE) {
1144 EXIT_ERROR(error, "on raw monitor notify");
1145 }
1146 }
1147
1148 void
1149 debugMonitorNotifyAll(jrawMonitorID monitor)
1150 {
1151 jvmtiError error;
1152
1153 error = FUNC_PTR(gdata->jvmti,RawMonitorNotifyAll)
1154 (gdata->jvmti, monitor);
1155 error = ignore_vm_death(error);
1156 if (error != JVMTI_ERROR_NONE) {
1157 EXIT_ERROR(error, "on raw monitor notify all");
1158 }
1159 }
1160
1161 jrawMonitorID
1162 debugMonitorCreate(char *name)
1163 {
1164 jrawMonitorID monitor;
1165 jvmtiError error;
1166
1167 error = FUNC_PTR(gdata->jvmti,CreateRawMonitor)
1168 (gdata->jvmti, name, &monitor);
1169 if (error != JVMTI_ERROR_NONE) {
1170 EXIT_ERROR(error, "on creation of a raw monitor");
1171 }
1172 return monitor;
1173 }
1174
1175 void
1176 debugMonitorDestroy(jrawMonitorID monitor)
1177 {
1178 jvmtiError error;
1179
1180 error = FUNC_PTR(gdata->jvmti,DestroyRawMonitor)
1181 (gdata->jvmti, monitor);
1182 error = ignore_vm_death(error);
1183 if (error != JVMTI_ERROR_NONE) {
1184 EXIT_ERROR(error, "on destruction of raw monitor");
1185 }
1186 }
1187
1188 /**
1189 * Return array of all threads (must be inside a WITH_LOCAL_REFS)
1190 */
1191 jthread *
1192 allThreads(jint *count)
1193 {
1194 jthread *threads;
1195 jvmtiError error;
1196
1197 *count = 0;
1198 threads = NULL;
1199 error = JVMTI_FUNC_PTR(gdata->jvmti,GetAllThreads)
1200 (gdata->jvmti, count, &threads);
1201 if (error == AGENT_ERROR_OUT_OF_MEMORY) {
1202 return NULL; /* Let caller deal with no memory? */
1203 }
1204 if (error != JVMTI_ERROR_NONE) {
1205 EXIT_ERROR(error, "getting all threads");
1206 }
1207 return threads;
1208 }
1209
1210 /**
1211 * Fill the passed in structure with thread group info.
1212 * name field is JVMTI allocated. parent is global ref.
1213 */
1214 void
1215 threadGroupInfo(jthreadGroup group, jvmtiThreadGroupInfo *info)
1216 {
1217 jvmtiError error;
1218
1219 error = JVMTI_FUNC_PTR(gdata->jvmti,GetThreadGroupInfo)
1220 (gdata->jvmti, group, info);
1221 if (error != JVMTI_ERROR_NONE) {
1222 EXIT_ERROR(error, "on getting thread group info");
1223 }
1224 }
1225
1226 /**
1227 * Return class signature string
1228 */
1229 jvmtiError
1230 classSignature(jclass clazz, char **psignature, char **pgeneric_signature)
1231 {
1232 jvmtiError error;
1233 char *signature = NULL;
1234
1235 /*
1236 * pgeneric_signature can be NULL, and GetClassSignature
1237 * accepts NULL.
1238 */
1239 error = FUNC_PTR(gdata->jvmti,GetClassSignature)
1240 (gdata->jvmti, clazz, &signature, pgeneric_signature);
1241
1242 if ( psignature != NULL ) {
1243 *psignature = signature;
1244 } else if ( signature != NULL ) {
1245 jvmtiDeallocate(signature);
1246 }
1247 return error;
1248 }
1249
1250 /* Get class name (not signature) */
1251 char *
1252 getClassname(jclass clazz)
1253 {
1254 char *classname;
1255
1256 classname = NULL;
1257 if ( clazz != NULL ) {
1258 if (classSignature(clazz, &classname, NULL) != JVMTI_ERROR_NONE) {
1259 classname = NULL;
1260 } else {
1261 /* Convert in place */
1262 convertSignatureToClassname(classname);
1263 }
1264 }
1265 return classname; /* Caller must free this memory */
1266 }
1267
1268 void
1269 writeGenericSignature(PacketOutputStream *out, char *genericSignature)
1270 {
1271 if (genericSignature == NULL) {
1272 (void)outStream_writeString(out, "");
1273 } else {
1274 (void)outStream_writeString(out, genericSignature);
1275 }
1276 }
1277
1278 jint
1279 classStatus(jclass clazz)
1280 {
1281 jint status;
1282 jvmtiError error;
1283
1284 error = JVMTI_FUNC_PTR(gdata->jvmti,GetClassStatus)
1285 (gdata->jvmti, clazz, &status);
1286 if (error != JVMTI_ERROR_NONE) {
1287 EXIT_ERROR(error, "on getting class status");
1288 }
1289 return status;
1290 }
1291
1292 static jboolean
1293 isArrayClass(jclass clazz)
1294 {
1295 jboolean isArray = JNI_FALSE;
1296 jvmtiError error;
1297
1298 error = JVMTI_FUNC_PTR(gdata->jvmti,IsArrayClass)
1299 (gdata->jvmti, clazz, &isArray);
1300 if (error != JVMTI_ERROR_NONE) {
1301 EXIT_ERROR(error, "on checking for an array class");
1302 }
1303 return isArray;
1304 }
1305
1306 static jboolean
1307 isInterface(jclass clazz)
1308 {
1309 jboolean isInterface = JNI_FALSE;
1310 jvmtiError error;
1311
1312 error = JVMTI_FUNC_PTR(gdata->jvmti,IsInterface)
1313 (gdata->jvmti, clazz, &isInterface);
1314 if (error != JVMTI_ERROR_NONE) {
1315 EXIT_ERROR(error, "on checking for an interface");
1316 }
1317 return isInterface;
1318 }
1319
1320 jvmtiError
1321 isFieldSynthetic(jclass clazz, jfieldID field, jboolean *psynthetic)
1322 {
1323 jvmtiError error;
1324
1325 error = JVMTI_FUNC_PTR(gdata->jvmti,IsFieldSynthetic)
1326 (gdata->jvmti, clazz, field, psynthetic);
1327 if ( error == JVMTI_ERROR_MUST_POSSESS_CAPABILITY ) {
1328 /* If the query is not supported, we assume it is not synthetic. */
1329 *psynthetic = JNI_FALSE;
1330 return JVMTI_ERROR_NONE;
1331 }
1332 return error;
1333 }
1334
1335 jvmtiError
1336 isMethodSynthetic(jmethodID method, jboolean *psynthetic)
1337 {
1338 jvmtiError error;
1339
1340 error = JVMTI_FUNC_PTR(gdata->jvmti,IsMethodSynthetic)
1341 (gdata->jvmti, method, psynthetic);
1342 if ( error == JVMTI_ERROR_MUST_POSSESS_CAPABILITY ) {
1343 /* If the query is not supported, we assume it is not synthetic. */
1344 *psynthetic = JNI_FALSE;
1345 return JVMTI_ERROR_NONE;
1346 }
1347 return error;
1348 }
1349
1350 jboolean
1351 isMethodNative(jmethodID method)
1352 {
1353 jboolean isNative = JNI_FALSE;
1354 jvmtiError error;
1355
1356 error = JVMTI_FUNC_PTR(gdata->jvmti,IsMethodNative)
1357 (gdata->jvmti, method, &isNative);
1358 if (error != JVMTI_ERROR_NONE) {
1359 EXIT_ERROR(error, "on checking for a native interface");
1360 }
1361 return isNative;
1362 }
1363
1364 jboolean
1365 isSameObject(JNIEnv *env, jobject o1, jobject o2)
1366 {
1367 if ( o1==o2 ) {
1368 return JNI_TRUE;
1369 }
1370 return FUNC_PTR(env,IsSameObject)(env, o1, o2);
1371 }
1372
1373 jint
1374 objectHashCode(jobject object)
1375 {
1376 jint hashCode = 0;
1377 jvmtiError error;
1378
1379 if ( object!=NULL ) {
1380 error = JVMTI_FUNC_PTR(gdata->jvmti,GetObjectHashCode)
1381 (gdata->jvmti, object, &hashCode);
1382 if (error != JVMTI_ERROR_NONE) {
1383 EXIT_ERROR(error, "on getting an object hash code");
1384 }
1385 }
1386 return hashCode;
1387 }
1388
1389 /* Get all implemented interfaces (must be inside a WITH_LOCAL_REFS) */
1390 jvmtiError
1391 allInterfaces(jclass clazz, jclass **ppinterfaces, jint *pcount)
1392 {
1393 jvmtiError error;
1394
1395 *pcount = 0;
1396 *ppinterfaces = NULL;
1397 error = JVMTI_FUNC_PTR(gdata->jvmti,GetImplementedInterfaces)
1398 (gdata->jvmti, clazz, pcount, ppinterfaces);
1399 return error;
1400 }
1401
1402 /* Get all loaded classes (must be inside a WITH_LOCAL_REFS) */
1403 jvmtiError
1404 allLoadedClasses(jclass **ppclasses, jint *pcount)
1405 {
1406 jvmtiError error;
1407
1408 *pcount = 0;
1409 *ppclasses = NULL;
1410 error = JVMTI_FUNC_PTR(gdata->jvmti,GetLoadedClasses)
1411 (gdata->jvmti, pcount, ppclasses);
1412 return error;
1413 }
1414
1415 /* Get all loaded classes for a loader (must be inside a WITH_LOCAL_REFS) */
1416 jvmtiError
1417 allClassLoaderClasses(jobject loader, jclass **ppclasses, jint *pcount)
1418 {
1419 jvmtiError error;
1420
1421 *pcount = 0;
1422 *ppclasses = NULL;
1423 error = JVMTI_FUNC_PTR(gdata->jvmti,GetClassLoaderClasses)
1424 (gdata->jvmti, loader, pcount, ppclasses);
1425 return error;
1426 }
1427
1428 static jboolean
1429 is_a_nested_class(char *outer_sig, int outer_sig_len, char *sig, int sep)
1430 {
1431 char *inner;
1432
1433 /* Assumed outer class signature is "LOUTERCLASSNAME;"
1434 * inner class signature is "LOUTERCLASSNAME$INNERNAME;"
1435 *
1436 * INNERNAME can take the form:
1437 * [0-9][1-9]* anonymous class somewhere in the file
1438 * [0-9][1-9]*NAME local class somewhere in the OUTER class
1439 * NAME nested class in OUTER
1440 *
1441 * If NAME itself contains a $ (sep) then classname is further nested
1442 * inside another class.
1443 *
1444 */
1445
1446 /* Check prefix first */
1447 if ( strncmp(sig, outer_sig, outer_sig_len-1) != 0 ) {
1448 return JNI_FALSE;
1449 }
1450
1451 /* Prefix must be followed by a $ (sep) */
1452 if ( sig[outer_sig_len-1] != sep ) {
1453 return JNI_FALSE; /* No sep follows the match, must not be nested. */
1454 }
1455
1456 /* Walk past any digits, if we reach the end, must be pure anonymous */
1457 inner = sig + outer_sig_len;
1458 #if 1 /* We want to return local classes */
1459 while ( *inner && isdigit(*inner) ) {
1460 inner++;
1461 }
1462 /* But anonymous class names can't be trusted. */
1463 if ( *inner == ';' ) {
1464 return JNI_FALSE; /* A pure anonymous class */
1465 }
1466 #else
1467 if ( *inner && isdigit(*inner) ) {
1468 return JNI_FALSE; /* A pure anonymous or local class */
1469 }
1470 #endif
1471
1472 /* Nested deeper? */
1473 if ( strchr(inner, sep) != NULL ) {
1474 return JNI_FALSE; /* Nested deeper than we want? */
1475 }
1476 return JNI_TRUE;
1477 }
1478
1479 /* Get all nested classes for a class (must be inside a WITH_LOCAL_REFS) */
1480 jvmtiError
1481 allNestedClasses(jclass parent_clazz, jclass **ppnested, jint *pcount)
1482 {
1483 jvmtiError error;
1484 jobject parent_loader;
1485 jclass *classes;
1486 char *signature;
1487 size_t len;
1488 jint count;
1489 jint ncount;
1490 int i;
1491
1492 *ppnested = NULL;
1493 *pcount = 0;
1494
1495 parent_loader = NULL;
1496 classes = NULL;
1497 signature = NULL;
1498 count = 0;
1499 ncount = 0;
1500
1501 error = classLoader(parent_clazz, &parent_loader);
1502 if (error != JVMTI_ERROR_NONE) {
1503 return error;
1504 }
1505 error = classSignature(parent_clazz, &signature, NULL);
1506 if (error != JVMTI_ERROR_NONE) {
1507 return error;
1508 }
1509 len = strlen(signature);
1510
1511 error = allClassLoaderClasses(parent_loader, &classes, &count);
1512 if ( error != JVMTI_ERROR_NONE ) {
1513 jvmtiDeallocate(signature);
1514 return error;
1515 }
1516
1517 for (i=0; i<count; i++) {
1518 jclass clazz;
1519 char *candidate_signature;
1520
1521 clazz = classes[i];
1522 candidate_signature = NULL;
1523 error = classSignature(clazz, &candidate_signature, NULL);
1524 if (error != JVMTI_ERROR_NONE) {
1525 break;
1526 }
1527
1528 if ( is_a_nested_class(signature, (int)len, candidate_signature, '$') ||
1529 is_a_nested_class(signature, (int)len, candidate_signature, '#') ) {
1530 /* Float nested classes to top */
1531 classes[i] = classes[ncount];
1532 classes[ncount++] = clazz;
1533 }
1534 jvmtiDeallocate(candidate_signature);
1535 }
1536
1537 jvmtiDeallocate(signature);
1538
1539 if ( count != 0 && ncount == 0 ) {
1540 jvmtiDeallocate(classes);
1541 classes = NULL;
1542 }
1543
1544 *ppnested = classes;
1545 *pcount = ncount;
1546 return error;
1547 }
1548
1549 void
1550 createLocalRefSpace(JNIEnv *env, jint capacity)
1551 {
1552 /*
1553 * Save current exception since it might get overwritten by
1554 * the calls below. Note we must depend on space in the existing
1555 * frame because asking for a new frame may generate an exception.
1556 */
1557 jobject throwable = JNI_FUNC_PTR(env,ExceptionOccurred)(env);
1558
1559 /*
1560 * Use the current frame if necessary; otherwise create a new one
1561 */
1562 if (JNI_FUNC_PTR(env,PushLocalFrame)(env, capacity) < 0) {
1563 EXIT_ERROR(AGENT_ERROR_OUT_OF_MEMORY,"PushLocalFrame: Unable to push JNI frame");
1564 }
1565
1566 /*
1567 * TO DO: This could be more efficient if it used EnsureLocalCapacity,
1568 * but that would not work if two functions on the call stack
1569 * use this function. We would need to either track reserved
1570 * references on a per-thread basis or come up with a convention
1571 * that would prevent two functions from depending on this function
1572 * at the same time.
1573 */
1574
1575 /*
1576 * Restore exception state from before call
1577 */
1578 if (throwable != NULL) {
1579 JNI_FUNC_PTR(env,Throw)(env, throwable);
1580 } else {
1581 JNI_FUNC_PTR(env,ExceptionClear)(env);
1582 }
1583 }
1584
1585 jboolean
1586 isClass(jobject object)
1587 {
1588 JNIEnv *env = getEnv();
1589 return JNI_FUNC_PTR(env,IsInstanceOf)(env, object, gdata->classClass);
1590 }
1591
1592 jboolean
1593 isThread(jobject object)
1594 {
1595 JNIEnv *env = getEnv();
1596 return JNI_FUNC_PTR(env,IsInstanceOf)(env, object, gdata->threadClass);
1597 }
1598
1599 jboolean
1600 isThreadGroup(jobject object)
1601 {
1602 JNIEnv *env = getEnv();
1603 return JNI_FUNC_PTR(env,IsInstanceOf)(env, object, gdata->threadGroupClass);
1604 }
1605
1606 jboolean
1607 isString(jobject object)
1608 {
1609 JNIEnv *env = getEnv();
1610 return JNI_FUNC_PTR(env,IsInstanceOf)(env, object, gdata->stringClass);
1611 }
1612
1613 jboolean
1614 isClassLoader(jobject object)
1615 {
1616 JNIEnv *env = getEnv();
1617 return JNI_FUNC_PTR(env,IsInstanceOf)(env, object, gdata->classLoaderClass);
1618 }
1619
1620 jboolean
1621 isArray(jobject object)
1622 {
1623 JNIEnv *env = getEnv();
1624 jboolean is;
1625
1626 WITH_LOCAL_REFS(env, 1) {
1627 jclass clazz;
1628 clazz = JNI_FUNC_PTR(env,GetObjectClass)(env, object);
1629 is = isArrayClass(clazz);
1630 } END_WITH_LOCAL_REFS(env);
1631
1632 return is;
1633 }
1634
1635 /**
1636 * Return property value as jstring
1637 */
1638 static jstring
1639 getPropertyValue(JNIEnv *env, char *propertyName)
1640 {
1641 jstring valueString;
1642 jstring nameString;
1643
1644 valueString = NULL;
1645
1646 /* Create new String object to hold the property name */
1647 nameString = JNI_FUNC_PTR(env,NewStringUTF)(env, propertyName);
1648 if (JNI_FUNC_PTR(env,ExceptionOccurred)(env)) {
1649 JNI_FUNC_PTR(env,ExceptionClear)(env);
1650 /* NULL will be returned below */
1651 } else {
1652 /* Call valueString = System.getProperty(nameString) */
1653 valueString = JNI_FUNC_PTR(env,CallStaticObjectMethod)
1654 (env, gdata->systemClass, gdata->systemGetProperty, nameString);
1655 if (JNI_FUNC_PTR(env,ExceptionOccurred)(env)) {
1656 JNI_FUNC_PTR(env,ExceptionClear)(env);
1657 valueString = NULL;
1658 }
1659 }
1660 return valueString;
1661 }
1662
1663 /**
1664 * Set an agent property
1665 */
1666 void
1667 setAgentPropertyValue(JNIEnv *env, char *propertyName, char* propertyValue)
1668 {
1669 jstring nameString;
1670 jstring valueString;
1671
1672 if (gdata->agent_properties == NULL) {
1673 /* VMSupport doesn't exist; so ignore */
1674 return;
1675 }
1676
1677 /* Create jstrings for property name and value */
1678 nameString = JNI_FUNC_PTR(env,NewStringUTF)(env, propertyName);
1679 if (nameString != NULL) {
1680 valueString = JNU_NewStringPlatform(env, propertyValue);
1681 if (valueString != NULL) {
1682 /* invoke Properties.setProperty */
1683 JNI_FUNC_PTR(env,CallObjectMethod)
1684 (env, gdata->agent_properties,
1685 gdata->setProperty,
1686 nameString, valueString);
1687 }
1688 }
1689 if (JNI_FUNC_PTR(env,ExceptionOccurred)(env)) {
1690 JNI_FUNC_PTR(env,ExceptionClear)(env);
1691 }
1692 }
1693
1694 /**
1695 * Return property value as JDWP allocated string in UTF8 encoding
1696 */
1697 static char *
1698 getPropertyUTF8(JNIEnv *env, char *propertyName)
1699 {
1700 jvmtiError error;
1701 char *value;
1702
1703 value = NULL;
1704 error = JVMTI_FUNC_PTR(gdata->jvmti,GetSystemProperty)
1705 (gdata->jvmti, (const char *)propertyName, &value);
1706 if (error != JVMTI_ERROR_NONE) {
1707 jstring valueString;
1708
1709 value = NULL;
1710 valueString = getPropertyValue(env, propertyName);
1711
1712 if (valueString != NULL) {
1713 const char *utf;
1714
1715 /* Get the UTF8 encoding for this property value string */
1716 utf = JNI_FUNC_PTR(env,GetStringUTFChars)(env, valueString, NULL);
1717 /* Make a copy for returning, release the JNI copy */
1718 value = jvmtiAllocate((int)strlen(utf) + 1);
1719 if (value != NULL) {
1720 (void)strcpy(value, utf);
1721 }
1722 JNI_FUNC_PTR(env,ReleaseStringUTFChars)(env, valueString, utf);
1723 }
1724 }
1725 if ( value == NULL ) {
1726 ERROR_MESSAGE(("JDWP Can't get property value for %s", propertyName));
1727 EXIT_ERROR(AGENT_ERROR_NULL_POINTER,NULL);
1728 }
1729 return value;
1730 }
1731
1732 jboolean
1733 isMethodObsolete(jmethodID method)
1734 {
1735 jvmtiError error;
1736 jboolean obsolete = JNI_TRUE;
1737
1738 if ( method != NULL ) {
1739 error = JVMTI_FUNC_PTR(gdata->jvmti,IsMethodObsolete)
1740 (gdata->jvmti, method, &obsolete);
1741 if (error != JVMTI_ERROR_NONE) {
1742 obsolete = JNI_TRUE;
1743 }
1744 }
1745 return obsolete;
1746 }
1747
1748 /* Get the jvmti environment to be used with tags */
1749 jvmtiEnv *
1750 getSpecialJvmti(void)
1751 {
1752 jvmtiEnv *jvmti;
1753 jvmtiError error;
1754 int rc;
1755
1756 /* Get one time use JVMTI Env */
1757 jvmtiCapabilities caps;
1758
1759 rc = JVM_FUNC_PTR(gdata->jvm,GetEnv)
1760 (gdata->jvm, (void **)&jvmti, JVMTI_VERSION_1);
1761 if (rc != JNI_OK) {
1762 return NULL;
1763 }
1764 (void)memset(&caps, 0, (int)sizeof(caps));
1765 caps.can_tag_objects = 1;
1766 error = JVMTI_FUNC_PTR(jvmti,AddCapabilities)(jvmti, &caps);
1767 if ( error != JVMTI_ERROR_NONE ) {
1768 return NULL;
1769 }
1770 return jvmti;
1771 }
1772
1773 void
1774 writeCodeLocation(PacketOutputStream *out, jclass clazz,
1775 jmethodID method, jlocation location)
1776 {
1777 jbyte tag;
1778
1779 if (clazz != NULL) {
1780 tag = referenceTypeTag(clazz);
1781 } else {
1782 tag = JDWP_TYPE_TAG(CLASS);
1783 }
1784 (void)outStream_writeByte(out, tag);
1785 (void)outStream_writeObjectRef(getEnv(), out, clazz);
1786 (void)outStream_writeMethodID(out, isMethodObsolete(method)?NULL:method);
1787 (void)outStream_writeLocation(out, location);
1788 }
1789
1790 void *
1791 jvmtiAllocate(jint numBytes)
1792 {
1793 void *ptr;
1794 jvmtiError error;
1795 if ( numBytes == 0 ) {
1796 return NULL;
1797 }
1798 error = FUNC_PTR(gdata->jvmti,Allocate)
1799 (gdata->jvmti, numBytes, (unsigned char**)&ptr);
1800 if (error != JVMTI_ERROR_NONE ) {
1801 EXIT_ERROR(error, "Can't allocate jvmti memory");
1802 }
1803 return ptr;
1804 }
1805
1806 void
1807 jvmtiDeallocate(void *ptr)
1808 {
1809 jvmtiError error;
1810 if ( ptr == NULL ) {
1811 return;
1812 }
1813 error = FUNC_PTR(gdata->jvmti,Deallocate)
1814 (gdata->jvmti, ptr);
1815 if (error != JVMTI_ERROR_NONE ) {
1816 EXIT_ERROR(error, "Can't deallocate jvmti memory");
1817 }
1818 }
1819
1820 /* Rarely needed, transport library uses JDWP errors, only use? */
1821 jvmtiError
1822 map2jvmtiError(jdwpError error)
1823 {
1824 switch ( error ) {
1825 case JDWP_ERROR(NONE):
1826 return JVMTI_ERROR_NONE;
1827 case JDWP_ERROR(INVALID_THREAD):
1828 return JVMTI_ERROR_INVALID_THREAD;
1829 case JDWP_ERROR(INVALID_THREAD_GROUP):
1830 return JVMTI_ERROR_INVALID_THREAD_GROUP;
1831 case JDWP_ERROR(INVALID_PRIORITY):
1832 return JVMTI_ERROR_INVALID_PRIORITY;
1833 case JDWP_ERROR(THREAD_NOT_SUSPENDED):
1834 return JVMTI_ERROR_THREAD_NOT_SUSPENDED;
1835 case JDWP_ERROR(THREAD_SUSPENDED):
1836 return JVMTI_ERROR_THREAD_SUSPENDED;
1837 case JDWP_ERROR(INVALID_OBJECT):
1838 return JVMTI_ERROR_INVALID_OBJECT;
1839 case JDWP_ERROR(INVALID_CLASS):
1840 return JVMTI_ERROR_INVALID_CLASS;
1841 case JDWP_ERROR(CLASS_NOT_PREPARED):
1842 return JVMTI_ERROR_CLASS_NOT_PREPARED;
1843 case JDWP_ERROR(INVALID_METHODID):
1844 return JVMTI_ERROR_INVALID_METHODID;
1845 case JDWP_ERROR(INVALID_LOCATION):
1846 return JVMTI_ERROR_INVALID_LOCATION;
1847 case JDWP_ERROR(INVALID_FIELDID):
1848 return JVMTI_ERROR_INVALID_FIELDID;
1849 case JDWP_ERROR(INVALID_FRAMEID):
1850 return AGENT_ERROR_INVALID_FRAMEID;
1851 case JDWP_ERROR(NO_MORE_FRAMES):
1852 return JVMTI_ERROR_NO_MORE_FRAMES;
1853 case JDWP_ERROR(OPAQUE_FRAME):
1854 return JVMTI_ERROR_OPAQUE_FRAME;
1855 case JDWP_ERROR(NOT_CURRENT_FRAME):
1856 return AGENT_ERROR_NOT_CURRENT_FRAME;
1857 case JDWP_ERROR(TYPE_MISMATCH):
1858 return JVMTI_ERROR_TYPE_MISMATCH;
1859 case JDWP_ERROR(INVALID_SLOT):
1860 return JVMTI_ERROR_INVALID_SLOT;
1861 case JDWP_ERROR(DUPLICATE):
1862 return JVMTI_ERROR_DUPLICATE;
1863 case JDWP_ERROR(NOT_FOUND):
1864 return JVMTI_ERROR_NOT_FOUND;
1865 case JDWP_ERROR(INVALID_MONITOR):
1866 return JVMTI_ERROR_INVALID_MONITOR;
1867 case JDWP_ERROR(NOT_MONITOR_OWNER):
1868 return JVMTI_ERROR_NOT_MONITOR_OWNER;
1869 case JDWP_ERROR(INTERRUPT):
1870 return JVMTI_ERROR_INTERRUPT;
1871 case JDWP_ERROR(INVALID_CLASS_FORMAT):
1872 return JVMTI_ERROR_INVALID_CLASS_FORMAT;
1873 case JDWP_ERROR(CIRCULAR_CLASS_DEFINITION):
1874 return JVMTI_ERROR_CIRCULAR_CLASS_DEFINITION;
1875 case JDWP_ERROR(FAILS_VERIFICATION):
1876 return JVMTI_ERROR_FAILS_VERIFICATION;
1877 case JDWP_ERROR(ADD_METHOD_NOT_IMPLEMENTED):
1878 return JVMTI_ERROR_UNSUPPORTED_REDEFINITION_METHOD_ADDED;
1879 case JDWP_ERROR(SCHEMA_CHANGE_NOT_IMPLEMENTED):
1880 return JVMTI_ERROR_UNSUPPORTED_REDEFINITION_SCHEMA_CHANGED;
1881 case JDWP_ERROR(INVALID_TYPESTATE):
1882 return JVMTI_ERROR_INVALID_TYPESTATE;
1883 case JDWP_ERROR(HIERARCHY_CHANGE_NOT_IMPLEMENTED):
1884 return JVMTI_ERROR_UNSUPPORTED_REDEFINITION_HIERARCHY_CHANGED;
1885 case JDWP_ERROR(DELETE_METHOD_NOT_IMPLEMENTED):
1886 return JVMTI_ERROR_UNSUPPORTED_REDEFINITION_METHOD_DELETED;
1887 case JDWP_ERROR(UNSUPPORTED_VERSION):
1888 return JVMTI_ERROR_UNSUPPORTED_VERSION;
1889 case JDWP_ERROR(NAMES_DONT_MATCH):
1890 return JVMTI_ERROR_NAMES_DONT_MATCH;
1891 case JDWP_ERROR(CLASS_MODIFIERS_CHANGE_NOT_IMPLEMENTED):
1892 return JVMTI_ERROR_UNSUPPORTED_REDEFINITION_CLASS_MODIFIERS_CHANGED;
1893 case JDWP_ERROR(METHOD_MODIFIERS_CHANGE_NOT_IMPLEMENTED):
1894 return JVMTI_ERROR_UNSUPPORTED_REDEFINITION_METHOD_MODIFIERS_CHANGED;
1895 case JDWP_ERROR(CLASS_ATTRIBUTE_CHANGE_NOT_IMPLEMENTED):
1896 return JVMTI_ERROR_UNSUPPORTED_REDEFINITION_CLASS_ATTRIBUTE_CHANGED;
1897 case JDWP_ERROR(NOT_IMPLEMENTED):
1898 return JVMTI_ERROR_NOT_AVAILABLE;
1899 case JDWP_ERROR(NULL_POINTER):
1900 return JVMTI_ERROR_NULL_POINTER;
1901 case JDWP_ERROR(ABSENT_INFORMATION):
1902 return JVMTI_ERROR_ABSENT_INFORMATION;
1903 case JDWP_ERROR(INVALID_EVENT_TYPE):
1904 return JVMTI_ERROR_INVALID_EVENT_TYPE;
1905 case JDWP_ERROR(ILLEGAL_ARGUMENT):
1906 return JVMTI_ERROR_ILLEGAL_ARGUMENT;
1907 case JDWP_ERROR(OUT_OF_MEMORY):
1908 return JVMTI_ERROR_OUT_OF_MEMORY;
1909 case JDWP_ERROR(ACCESS_DENIED):
1910 return JVMTI_ERROR_ACCESS_DENIED;
1911 case JDWP_ERROR(VM_DEAD):
1912 return JVMTI_ERROR_WRONG_PHASE;
1913 case JDWP_ERROR(UNATTACHED_THREAD):
1914 return JVMTI_ERROR_UNATTACHED_THREAD;
1915 case JDWP_ERROR(INVALID_TAG):
1916 return AGENT_ERROR_INVALID_TAG;
1917 case JDWP_ERROR(ALREADY_INVOKING):
1918 return AGENT_ERROR_ALREADY_INVOKING;
1919 case JDWP_ERROR(INVALID_INDEX):
1920 return AGENT_ERROR_INVALID_INDEX;
1921 case JDWP_ERROR(INVALID_LENGTH):
1922 return AGENT_ERROR_INVALID_LENGTH;
1923 case JDWP_ERROR(INVALID_STRING):
1924 return AGENT_ERROR_INVALID_STRING;
1925 case JDWP_ERROR(INVALID_CLASS_LOADER):
1926 return AGENT_ERROR_INVALID_CLASS_LOADER;
1927 case JDWP_ERROR(INVALID_ARRAY):
1928 return AGENT_ERROR_INVALID_ARRAY;
1929 case JDWP_ERROR(TRANSPORT_LOAD):
1930 return AGENT_ERROR_TRANSPORT_LOAD;
1931 case JDWP_ERROR(TRANSPORT_INIT):
1932 return AGENT_ERROR_TRANSPORT_INIT;
1933 case JDWP_ERROR(NATIVE_METHOD):
1934 return AGENT_ERROR_NATIVE_METHOD;
1935 case JDWP_ERROR(INVALID_COUNT):
1936 return AGENT_ERROR_INVALID_COUNT;
1937 case JDWP_ERROR(INTERNAL):
1938 return AGENT_ERROR_JDWP_INTERNAL;
1939 }
1940 return AGENT_ERROR_INTERNAL;
1941 }
1942
1943 static jvmtiEvent index2jvmti[EI_max-EI_min+1];
1944 static jdwpEvent index2jdwp [EI_max-EI_min+1];
1945
1946 void
1947 eventIndexInit(void)
1948 {
1949 (void)memset(index2jvmti, 0, (int)sizeof(index2jvmti));
1950 (void)memset(index2jdwp, 0, (int)sizeof(index2jdwp));
1951
1952 index2jvmti[EI_SINGLE_STEP -EI_min] = JVMTI_EVENT_SINGLE_STEP;
1953 index2jvmti[EI_BREAKPOINT -EI_min] = JVMTI_EVENT_BREAKPOINT;
1954 index2jvmti[EI_FRAME_POP -EI_min] = JVMTI_EVENT_FRAME_POP;
1955 index2jvmti[EI_EXCEPTION -EI_min] = JVMTI_EVENT_EXCEPTION;
1956 index2jvmti[EI_THREAD_START -EI_min] = JVMTI_EVENT_THREAD_START;
1957 index2jvmti[EI_THREAD_END -EI_min] = JVMTI_EVENT_THREAD_END;
1958 index2jvmti[EI_CLASS_PREPARE -EI_min] = JVMTI_EVENT_CLASS_PREPARE;
1959 index2jvmti[EI_GC_FINISH -EI_min] = JVMTI_EVENT_GARBAGE_COLLECTION_FINISH;
1960 index2jvmti[EI_CLASS_LOAD -EI_min] = JVMTI_EVENT_CLASS_LOAD;
1961 index2jvmti[EI_FIELD_ACCESS -EI_min] = JVMTI_EVENT_FIELD_ACCESS;
1962 index2jvmti[EI_FIELD_MODIFICATION -EI_min] = JVMTI_EVENT_FIELD_MODIFICATION;
1963 index2jvmti[EI_EXCEPTION_CATCH -EI_min] = JVMTI_EVENT_EXCEPTION_CATCH;
1964 index2jvmti[EI_METHOD_ENTRY -EI_min] = JVMTI_EVENT_METHOD_ENTRY;
1965 index2jvmti[EI_METHOD_EXIT -EI_min] = JVMTI_EVENT_METHOD_EXIT;
1966 index2jvmti[EI_MONITOR_CONTENDED_ENTER -EI_min] = JVMTI_EVENT_MONITOR_CONTENDED_ENTER;
1967 index2jvmti[EI_MONITOR_CONTENDED_ENTERED -EI_min] = JVMTI_EVENT_MONITOR_CONTENDED_ENTERED;
1968 index2jvmti[EI_MONITOR_WAIT -EI_min] = JVMTI_EVENT_MONITOR_WAIT;
1969 index2jvmti[EI_MONITOR_WAITED -EI_min] = JVMTI_EVENT_MONITOR_WAITED;
1970 index2jvmti[EI_VM_INIT -EI_min] = JVMTI_EVENT_VM_INIT;
1971 index2jvmti[EI_VM_DEATH -EI_min] = JVMTI_EVENT_VM_DEATH;
1972
1973 index2jdwp[EI_SINGLE_STEP -EI_min] = JDWP_EVENT(SINGLE_STEP);
1974 index2jdwp[EI_BREAKPOINT -EI_min] = JDWP_EVENT(BREAKPOINT);
1975 index2jdwp[EI_FRAME_POP -EI_min] = JDWP_EVENT(FRAME_POP);
1976 index2jdwp[EI_EXCEPTION -EI_min] = JDWP_EVENT(EXCEPTION);
1977 index2jdwp[EI_THREAD_START -EI_min] = JDWP_EVENT(THREAD_START);
1978 index2jdwp[EI_THREAD_END -EI_min] = JDWP_EVENT(THREAD_END);
1979 index2jdwp[EI_CLASS_PREPARE -EI_min] = JDWP_EVENT(CLASS_PREPARE);
1980 index2jdwp[EI_GC_FINISH -EI_min] = JDWP_EVENT(CLASS_UNLOAD);
1981 index2jdwp[EI_CLASS_LOAD -EI_min] = JDWP_EVENT(CLASS_LOAD);
1982 index2jdwp[EI_FIELD_ACCESS -EI_min] = JDWP_EVENT(FIELD_ACCESS);
1983 index2jdwp[EI_FIELD_MODIFICATION -EI_min] = JDWP_EVENT(FIELD_MODIFICATION);
1984 index2jdwp[EI_EXCEPTION_CATCH -EI_min] = JDWP_EVENT(EXCEPTION_CATCH);
1985 index2jdwp[EI_METHOD_ENTRY -EI_min] = JDWP_EVENT(METHOD_ENTRY);
1986 index2jdwp[EI_METHOD_EXIT -EI_min] = JDWP_EVENT(METHOD_EXIT);
1987 index2jdwp[EI_MONITOR_CONTENDED_ENTER -EI_min] = JDWP_EVENT(MONITOR_CONTENDED_ENTER);
1988 index2jdwp[EI_MONITOR_CONTENDED_ENTERED -EI_min] = JDWP_EVENT(MONITOR_CONTENDED_ENTERED);
1989 index2jdwp[EI_MONITOR_WAIT -EI_min] = JDWP_EVENT(MONITOR_WAIT);
1990 index2jdwp[EI_MONITOR_WAITED -EI_min] = JDWP_EVENT(MONITOR_WAITED);
1991 index2jdwp[EI_VM_INIT -EI_min] = JDWP_EVENT(VM_INIT);
1992 index2jdwp[EI_VM_DEATH -EI_min] = JDWP_EVENT(VM_DEATH);
1993 }
1994
1995 jdwpEvent
1996 eventIndex2jdwp(EventIndex i)
1997 {
1998 if ( i < EI_min || i > EI_max ) {
1999 EXIT_ERROR(AGENT_ERROR_INVALID_INDEX,"bad EventIndex");
2000 }
2001 return index2jdwp[i-EI_min];
2002 }
2003
2004 jvmtiEvent
2005 eventIndex2jvmti(EventIndex i)
2006 {
2007 if ( i < EI_min || i > EI_max ) {
2008 EXIT_ERROR(AGENT_ERROR_INVALID_INDEX,"bad EventIndex");
2009 }
2010 return index2jvmti[i-EI_min];
2011 }
2012
2013 EventIndex
2014 jdwp2EventIndex(jdwpEvent eventType)
2015 {
2016 switch ( eventType ) {
2017 case JDWP_EVENT(SINGLE_STEP):
2018 return EI_SINGLE_STEP;
2019 case JDWP_EVENT(BREAKPOINT):
2020 return EI_BREAKPOINT;
2021 case JDWP_EVENT(FRAME_POP):
2022 return EI_FRAME_POP;
2023 case JDWP_EVENT(EXCEPTION):
2024 return EI_EXCEPTION;
2025 case JDWP_EVENT(THREAD_START):
2026 return EI_THREAD_START;
2027 case JDWP_EVENT(THREAD_END):
2028 return EI_THREAD_END;
2029 case JDWP_EVENT(CLASS_PREPARE):
2030 return EI_CLASS_PREPARE;
2031 case JDWP_EVENT(CLASS_UNLOAD):
2032 return EI_GC_FINISH;
2033 case JDWP_EVENT(CLASS_LOAD):
2034 return EI_CLASS_LOAD;
2035 case JDWP_EVENT(FIELD_ACCESS):
2036 return EI_FIELD_ACCESS;
2037 case JDWP_EVENT(FIELD_MODIFICATION):
2038 return EI_FIELD_MODIFICATION;
2039 case JDWP_EVENT(EXCEPTION_CATCH):
2040 return EI_EXCEPTION_CATCH;
2041 case JDWP_EVENT(METHOD_ENTRY):
2042 return EI_METHOD_ENTRY;
2043 case JDWP_EVENT(METHOD_EXIT):
2044 return EI_METHOD_EXIT;
2045 case JDWP_EVENT(METHOD_EXIT_WITH_RETURN_VALUE):
2046 return EI_METHOD_EXIT;
2047 case JDWP_EVENT(MONITOR_CONTENDED_ENTER):
2048 return EI_MONITOR_CONTENDED_ENTER;
2049 case JDWP_EVENT(MONITOR_CONTENDED_ENTERED):
2050 return EI_MONITOR_CONTENDED_ENTERED;
2051 case JDWP_EVENT(MONITOR_WAIT):
2052 return EI_MONITOR_WAIT;
2053 case JDWP_EVENT(MONITOR_WAITED):
2054 return EI_MONITOR_WAITED;
2055 case JDWP_EVENT(VM_INIT):
2056 return EI_VM_INIT;
2057 case JDWP_EVENT(VM_DEATH):
2058 return EI_VM_DEATH;
2059 default:
2060 break;
2061 }
2062
2063 /*
2064 * Event type not recognized - don't exit with error as caller
2065 * may wish to return error to debugger.
2066 */
2067 return (EventIndex)0;
2068 }
2069
2070 EventIndex
2071 jvmti2EventIndex(jvmtiEvent kind)
2072 {
2073 switch ( kind ) {
2074 case JVMTI_EVENT_SINGLE_STEP:
2075 return EI_SINGLE_STEP;
2076 case JVMTI_EVENT_BREAKPOINT:
2077 return EI_BREAKPOINT;
2078 case JVMTI_EVENT_FRAME_POP:
2079 return EI_FRAME_POP;
2080 case JVMTI_EVENT_EXCEPTION:
2081 return EI_EXCEPTION;
2082 case JVMTI_EVENT_THREAD_START:
2083 return EI_THREAD_START;
2084 case JVMTI_EVENT_THREAD_END:
2085 return EI_THREAD_END;
2086 case JVMTI_EVENT_CLASS_PREPARE:
2087 return EI_CLASS_PREPARE;
2088 case JVMTI_EVENT_GARBAGE_COLLECTION_FINISH:
2089 return EI_GC_FINISH;
2090 case JVMTI_EVENT_CLASS_LOAD:
2091 return EI_CLASS_LOAD;
2092 case JVMTI_EVENT_FIELD_ACCESS:
2093 return EI_FIELD_ACCESS;
2094 case JVMTI_EVENT_FIELD_MODIFICATION:
2095 return EI_FIELD_MODIFICATION;
2096 case JVMTI_EVENT_EXCEPTION_CATCH:
2097 return EI_EXCEPTION_CATCH;
2098 case JVMTI_EVENT_METHOD_ENTRY:
2099 return EI_METHOD_ENTRY;
2100 case JVMTI_EVENT_METHOD_EXIT:
2101 return EI_METHOD_EXIT;
2102 /*
2103 * There is no JVMTI_EVENT_METHOD_EXIT_WITH_RETURN_VALUE.
2104 * The normal JVMTI_EVENT_METHOD_EXIT always contains the return value.
2105 */
2106 case JVMTI_EVENT_MONITOR_CONTENDED_ENTER:
2107 return EI_MONITOR_CONTENDED_ENTER;
2108 case JVMTI_EVENT_MONITOR_CONTENDED_ENTERED:
2109 return EI_MONITOR_CONTENDED_ENTERED;
2110 case JVMTI_EVENT_MONITOR_WAIT:
2111 return EI_MONITOR_WAIT;
2112 case JVMTI_EVENT_MONITOR_WAITED:
2113 return EI_MONITOR_WAITED;
2114 case JVMTI_EVENT_VM_INIT:
2115 return EI_VM_INIT;
2116 case JVMTI_EVENT_VM_DEATH:
2117 return EI_VM_DEATH;
2118 default:
2119 EXIT_ERROR(AGENT_ERROR_INVALID_INDEX,"JVMTI to EventIndex mapping");
2120 break;
2121 }
2122 return (EventIndex)0;
2123 }
2124
2125 /* This routine is commonly used, maps jvmti and agent errors to the best
2126 * jdwp error code we can map to.
2127 */
2128 jdwpError
2129 map2jdwpError(jvmtiError error)
2130 {
2131 switch ( (int)error ) {
2132 case JVMTI_ERROR_NONE:
2133 return JDWP_ERROR(NONE);
2134 case AGENT_ERROR_INVALID_THREAD:
2135 case JVMTI_ERROR_INVALID_THREAD:
2136 return JDWP_ERROR(INVALID_THREAD);
2137 case JVMTI_ERROR_INVALID_THREAD_GROUP:
2138 return JDWP_ERROR(INVALID_THREAD_GROUP);
2139 case JVMTI_ERROR_INVALID_PRIORITY:
2140 return JDWP_ERROR(INVALID_PRIORITY);
2141 case JVMTI_ERROR_THREAD_NOT_SUSPENDED:
2142 return JDWP_ERROR(THREAD_NOT_SUSPENDED);
2143 case JVMTI_ERROR_THREAD_SUSPENDED:
2144 return JDWP_ERROR(THREAD_SUSPENDED);
2145 case JVMTI_ERROR_THREAD_NOT_ALIVE:
2146 return JDWP_ERROR(INVALID_THREAD);
2147 case AGENT_ERROR_INVALID_OBJECT:
2148 case JVMTI_ERROR_INVALID_OBJECT:
2149 return JDWP_ERROR(INVALID_OBJECT);
2150 case JVMTI_ERROR_INVALID_CLASS:
2151 return JDWP_ERROR(INVALID_CLASS);
2152 case JVMTI_ERROR_CLASS_NOT_PREPARED:
2153 return JDWP_ERROR(CLASS_NOT_PREPARED);
2154 case JVMTI_ERROR_INVALID_METHODID:
2155 return JDWP_ERROR(INVALID_METHODID);
2156 case JVMTI_ERROR_INVALID_LOCATION:
2157 return JDWP_ERROR(INVALID_LOCATION);
2158 case JVMTI_ERROR_INVALID_FIELDID:
2159 return JDWP_ERROR(INVALID_FIELDID);
2160 case AGENT_ERROR_NO_MORE_FRAMES:
2161 case JVMTI_ERROR_NO_MORE_FRAMES:
2162 return JDWP_ERROR(NO_MORE_FRAMES);
2163 case JVMTI_ERROR_OPAQUE_FRAME:
2164 return JDWP_ERROR(OPAQUE_FRAME);
2165 case JVMTI_ERROR_TYPE_MISMATCH:
2166 return JDWP_ERROR(TYPE_MISMATCH);
2167 case JVMTI_ERROR_INVALID_SLOT:
2168 return JDWP_ERROR(INVALID_SLOT);
2169 case JVMTI_ERROR_DUPLICATE:
2170 return JDWP_ERROR(DUPLICATE);
2171 case JVMTI_ERROR_NOT_FOUND:
2172 return JDWP_ERROR(NOT_FOUND);
2173 case JVMTI_ERROR_INVALID_MONITOR:
2174 return JDWP_ERROR(INVALID_MONITOR);
2175 case JVMTI_ERROR_NOT_MONITOR_OWNER:
2176 return JDWP_ERROR(NOT_MONITOR_OWNER);
2177 case JVMTI_ERROR_INTERRUPT:
2178 return JDWP_ERROR(INTERRUPT);
2179 case JVMTI_ERROR_INVALID_CLASS_FORMAT:
2180 return JDWP_ERROR(INVALID_CLASS_FORMAT);
2181 case JVMTI_ERROR_CIRCULAR_CLASS_DEFINITION:
2182 return JDWP_ERROR(CIRCULAR_CLASS_DEFINITION);
2183 case JVMTI_ERROR_FAILS_VERIFICATION:
2184 return JDWP_ERROR(FAILS_VERIFICATION);
2185 case JVMTI_ERROR_INVALID_TYPESTATE:
2186 return JDWP_ERROR(INVALID_TYPESTATE);
2187 case JVMTI_ERROR_UNSUPPORTED_VERSION:
2188 return JDWP_ERROR(UNSUPPORTED_VERSION);
2189 case JVMTI_ERROR_NAMES_DONT_MATCH:
2190 return JDWP_ERROR(NAMES_DONT_MATCH);
2191 case AGENT_ERROR_NULL_POINTER:
2192 case JVMTI_ERROR_NULL_POINTER:
2193 return JDWP_ERROR(NULL_POINTER);
2194 case JVMTI_ERROR_ABSENT_INFORMATION:
2195 return JDWP_ERROR(ABSENT_INFORMATION);
2196 case AGENT_ERROR_INVALID_EVENT_TYPE:
2197 case JVMTI_ERROR_INVALID_EVENT_TYPE:
2198 return JDWP_ERROR(INVALID_EVENT_TYPE);
2199 case AGENT_ERROR_ILLEGAL_ARGUMENT:
2200 case JVMTI_ERROR_ILLEGAL_ARGUMENT:
2201 return JDWP_ERROR(ILLEGAL_ARGUMENT);
2202 case JVMTI_ERROR_OUT_OF_MEMORY:
2203 case AGENT_ERROR_OUT_OF_MEMORY:
2204 return JDWP_ERROR(OUT_OF_MEMORY);
2205 case JVMTI_ERROR_ACCESS_DENIED:
2206 return JDWP_ERROR(ACCESS_DENIED);
2207 case JVMTI_ERROR_WRONG_PHASE:
2208 case AGENT_ERROR_VM_DEAD:
2209 case AGENT_ERROR_NO_JNI_ENV:
2210 return JDWP_ERROR(VM_DEAD);
2211 case AGENT_ERROR_JNI_EXCEPTION:
2212 case JVMTI_ERROR_UNATTACHED_THREAD:
2213 return JDWP_ERROR(UNATTACHED_THREAD);
2214 case JVMTI_ERROR_NOT_AVAILABLE:
2215 case JVMTI_ERROR_MUST_POSSESS_CAPABILITY:
2216 return JDWP_ERROR(NOT_IMPLEMENTED);
2217 case JVMTI_ERROR_UNSUPPORTED_REDEFINITION_HIERARCHY_CHANGED:
2218 return JDWP_ERROR(HIERARCHY_CHANGE_NOT_IMPLEMENTED);
2219 case JVMTI_ERROR_UNSUPPORTED_REDEFINITION_METHOD_DELETED:
2220 return JDWP_ERROR(DELETE_METHOD_NOT_IMPLEMENTED);
2221 case JVMTI_ERROR_UNSUPPORTED_REDEFINITION_METHOD_ADDED:
2222 return JDWP_ERROR(ADD_METHOD_NOT_IMPLEMENTED);
2223 case JVMTI_ERROR_UNSUPPORTED_REDEFINITION_SCHEMA_CHANGED:
2224 return JDWP_ERROR(SCHEMA_CHANGE_NOT_IMPLEMENTED);
2225 case JVMTI_ERROR_UNSUPPORTED_REDEFINITION_CLASS_MODIFIERS_CHANGED:
2226 return JDWP_ERROR(CLASS_MODIFIERS_CHANGE_NOT_IMPLEMENTED);
2227 case JVMTI_ERROR_UNSUPPORTED_REDEFINITION_METHOD_MODIFIERS_CHANGED:
2228 return JDWP_ERROR(METHOD_MODIFIERS_CHANGE_NOT_IMPLEMENTED);
2229 case JVMTI_ERROR_UNSUPPORTED_REDEFINITION_CLASS_ATTRIBUTE_CHANGED:
2230 return JDWP_ERROR(CLASS_ATTRIBUTE_CHANGE_NOT_IMPLEMENTED);
2231 case AGENT_ERROR_NOT_CURRENT_FRAME:
2232 return JDWP_ERROR(NOT_CURRENT_FRAME);
2233 case AGENT_ERROR_INVALID_TAG:
2234 return JDWP_ERROR(INVALID_TAG);
2235 case AGENT_ERROR_ALREADY_INVOKING:
2236 return JDWP_ERROR(ALREADY_INVOKING);
2237 case AGENT_ERROR_INVALID_INDEX:
2238 return JDWP_ERROR(INVALID_INDEX);
2239 case AGENT_ERROR_INVALID_LENGTH:
2240 return JDWP_ERROR(INVALID_LENGTH);
2241 case AGENT_ERROR_INVALID_STRING:
2242 return JDWP_ERROR(INVALID_STRING);
2243 case AGENT_ERROR_INVALID_CLASS_LOADER:
2244 return JDWP_ERROR(INVALID_CLASS_LOADER);
2245 case AGENT_ERROR_INVALID_ARRAY:
2246 return JDWP_ERROR(INVALID_ARRAY);
2247 case AGENT_ERROR_TRANSPORT_LOAD:
2248 return JDWP_ERROR(TRANSPORT_LOAD);
2249 case AGENT_ERROR_TRANSPORT_INIT:
2250 return JDWP_ERROR(TRANSPORT_INIT);
2251 case AGENT_ERROR_NATIVE_METHOD:
2252 return JDWP_ERROR(NATIVE_METHOD);
2253 case AGENT_ERROR_INVALID_COUNT:
2254 return JDWP_ERROR(INVALID_COUNT);
2255 case AGENT_ERROR_INVALID_FRAMEID:
2256 return JDWP_ERROR(INVALID_FRAMEID);
2257 case JVMTI_ERROR_INTERNAL:
2258 case JVMTI_ERROR_INVALID_ENVIRONMENT:
2259 case AGENT_ERROR_INTERNAL:
2260 case AGENT_ERROR_JVMTI_INTERNAL:
2261 case AGENT_ERROR_JDWP_INTERNAL:
2262 return JDWP_ERROR(INTERNAL);
2263 default:
2264 break;
2265 }
2266 return JDWP_ERROR(INTERNAL);
2267 }
2268
2269 jint
2270 map2jdwpSuspendStatus(jint state)
2271 {
2272 jint status = 0;
2273 if ( ( state & JVMTI_THREAD_STATE_SUSPENDED ) != 0 ) {
2274 status = JDWP_SUSPEND_STATUS(SUSPENDED);
2275 }
2276 return status;
2277 }
2278
2279 jdwpThreadStatus
2280 map2jdwpThreadStatus(jint state)
2281 {
2282 jdwpThreadStatus status;
2283
2284 status = (jdwpThreadStatus)(-1);
2285
2286 if ( ! ( state & JVMTI_THREAD_STATE_ALIVE ) ) {
2287 if ( state & JVMTI_THREAD_STATE_TERMINATED ) {
2288 status = JDWP_THREAD_STATUS(ZOMBIE);
2289 } else {
2290 /* FIXUP? New JDWP #define for not started? */
2291 status = (jdwpThreadStatus)(-1);
2292 }
2293 } else {
2294 if ( state & JVMTI_THREAD_STATE_SLEEPING ) {
2295 status = JDWP_THREAD_STATUS(SLEEPING);
2296 } else if ( state & JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER ) {
2297 status = JDWP_THREAD_STATUS(MONITOR);
2298 } else if ( state & JVMTI_THREAD_STATE_WAITING ) {
2299 status = JDWP_THREAD_STATUS(WAIT);
2300 } else if ( state & JVMTI_THREAD_STATE_RUNNABLE ) {
2301 status = JDWP_THREAD_STATUS(RUNNING);
2302 }
2303 }
2304 return status;
2305 }
2306
2307 jint
2308 map2jdwpClassStatus(jint classStatus)
2309 {
2310 jint status = 0;
2311 if ( ( classStatus & JVMTI_CLASS_STATUS_VERIFIED ) != 0 ) {
2312 status |= JDWP_CLASS_STATUS(VERIFIED);
2313 }
2314 if ( ( classStatus & JVMTI_CLASS_STATUS_PREPARED ) != 0 ) {
2315 status |= JDWP_CLASS_STATUS(PREPARED);
2316 }
2317 if ( ( classStatus & JVMTI_CLASS_STATUS_INITIALIZED ) != 0 ) {
2318 status |= JDWP_CLASS_STATUS(INITIALIZED);
2319 }
2320 if ( ( classStatus & JVMTI_CLASS_STATUS_ERROR ) != 0 ) {
2321 status |= JDWP_CLASS_STATUS(ERROR);
2322 }
2323 return status;
2324 }
2325
2326 void
2327 log_debugee_location(const char *func,
2328 jthread thread, jmethodID method, jlocation location)
2329 {
2330 int logging_locations = LOG_TEST(JDWP_LOG_LOC);
2331
2332 if ( logging_locations ) {
2333 char *method_name;
2334 char *class_sig;
2335 jvmtiError error;
2336 jvmtiThreadInfo info;
2337 jint state;
2338
2339 /* Get thread information */
2340 info.name = NULL;
2341 error = FUNC_PTR(gdata->jvmti,GetThreadInfo)
2342 (gdata->jvmti, thread, &info);
2343 if ( error != JVMTI_ERROR_NONE) {
2344 info.name = NULL;
2345 }
2346 error = FUNC_PTR(gdata->jvmti,GetThreadState)
2347 (gdata->jvmti, thread, &state);
2348 if ( error != JVMTI_ERROR_NONE) {
2349 state = 0;
2350 }
2351
2352 /* Get method if necessary */
2353 if ( method==NULL ) {
2354 error = FUNC_PTR(gdata->jvmti,GetFrameLocation)
2355 (gdata->jvmti, thread, 0, &method, &location);
2356 if ( error != JVMTI_ERROR_NONE ) {
2357 method = NULL;
2358 location = 0;
2359 }
2360 }
2361
2362 /* Get method name */
2363 method_name = NULL;
2364 if ( method != NULL ) {
2365 error = methodSignature(method, &method_name, NULL, NULL);
2366 if ( error != JVMTI_ERROR_NONE ) {
2367 method_name = NULL;
2368 }
2369 }
2370
2371 /* Get class signature */
2372 class_sig = NULL;
2373 if ( method != NULL ) {
2374 jclass clazz;
2375
2376 error = methodClass(method, &clazz);
2377 if ( error == JVMTI_ERROR_NONE ) {
2378 error = classSignature(clazz, &class_sig, NULL);
2379 if ( error != JVMTI_ERROR_NONE ) {
2380 class_sig = NULL;
2381 }
2382 }
2383 }
2384
2385 /* Issue log message */
2386 LOG_LOC(("%s: debugee: thread=%p(%s:0x%x),method=%p(%s@%d;%s)",
2387 func,
2388 thread, info.name==NULL ? "?" : info.name, state,
2389 method, method_name==NULL ? "?" : method_name,
2390 (int)location, class_sig==NULL ? "?" : class_sig));
2391
2392 /* Free memory */
2393 if ( class_sig != NULL ) {
2394 jvmtiDeallocate(class_sig);
2395 }
2396 if ( method_name != NULL ) {
2397 jvmtiDeallocate(method_name);
2398 }
2399 if ( info.name != NULL ) {
2400 jvmtiDeallocate(info.name);
2401 }
2402 }
2403 }
2404
2405 /* ********************************************************************* */
2406 /* JDK 6.0: Use of new Heap Iteration functions */
2407 /* ********************************************************************* */
2408
2409 /* ********************************************************************* */
2410 /* Instances */
2411
2412 /* Structure to hold class instances heap iteration data (arg user_data) */
2413 typedef struct ClassInstancesData {
2414 jint instCount;
2415 jint maxInstances;
2416 jlong objTag;
2417 jvmtiError error;
2418 } ClassInstancesData;
2419
2420 /* Callback for instance object tagging (heap_reference_callback). */
2421 static jint JNICALL
2422 cbObjectTagInstance(jvmtiHeapReferenceKind reference_kind,
2423 const jvmtiHeapReferenceInfo* reference_info, jlong class_tag,
2424 jlong referrer_class_tag, jlong size,
2425 jlong* tag_ptr, jlong* referrer_tag_ptr, jint length, void* user_data)
2426 {
2427 ClassInstancesData *data;
2428
2429 /* Check data structure */
2430 data = (ClassInstancesData*)user_data;
2431 if (data == NULL) {
2432 return JVMTI_VISIT_ABORT;
2433 }
2434
2435 /* If we have tagged enough objects, just abort */
2436 if ( data->maxInstances != 0 && data->instCount >= data->maxInstances ) {
2437 return JVMTI_VISIT_ABORT;
2438 }
2439
2440 /* If tagged already, just continue */
2441 if ( (*tag_ptr) != (jlong)0 ) {
2442 return JVMTI_VISIT_OBJECTS;
2443 }
2444
2445 /* Tag the object so we don't count it again, and so we can retrieve it */
2446 (*tag_ptr) = data->objTag;
2447 data->instCount++;
2448 return JVMTI_VISIT_OBJECTS;
2449 }
2450
2451 /* Get instances for one class */
2452 jvmtiError
2453 classInstances(jclass klass, ObjectBatch *instances, int maxInstances)
2454 {
2455 ClassInstancesData data;
2456 jvmtiHeapCallbacks heap_callbacks;
2457 jvmtiError error;
2458 jvmtiEnv *jvmti;
2459
2460 /* Check interface assumptions */
2461
2462 if (klass == NULL) {
2463 return AGENT_ERROR_INVALID_OBJECT;
2464 }
2465
2466 if ( maxInstances < 0 || instances == NULL) {
2467 return AGENT_ERROR_ILLEGAL_ARGUMENT;
2468 }
2469
2470 /* Initialize return information */
2471 instances->count = 0;
2472 instances->objects = NULL;
2473
2474 /* Get jvmti environment to use */
2475 jvmti = getSpecialJvmti();
2476 if ( jvmti == NULL ) {
2477 return AGENT_ERROR_INTERNAL;
2478 }
2479
2480 /* Setup data to passed around the callbacks */
2481 data.instCount = 0;
2482 data.maxInstances = maxInstances;
2483 data.objTag = (jlong)1;
2484 data.error = JVMTI_ERROR_NONE;
2485
2486 /* Clear out callbacks structure */
2487 (void)memset(&heap_callbacks,0,sizeof(heap_callbacks));
2488
2489 /* Set the callbacks we want */
2490 heap_callbacks.heap_reference_callback = &cbObjectTagInstance;
2491
2492 /* Follow references, no initiating object, just this class, all objects */
2493 error = JVMTI_FUNC_PTR(jvmti,FollowReferences)
2494 (jvmti, 0, klass, NULL, &heap_callbacks, &data);
2495 if ( error == JVMTI_ERROR_NONE ) {
2496 error = data.error;
2497 }
2498
2499 /* Get all the instances now that they are tagged */
2500 if ( error == JVMTI_ERROR_NONE ) {
2501 error = JVMTI_FUNC_PTR(jvmti,GetObjectsWithTags)
2502 (jvmti, 1, &(data.objTag), &(instances->count),
2503 &(instances->objects), NULL);
2504 /* Verify we got the count we expected */
2505 if ( data.instCount != instances->count ) {
2506 error = AGENT_ERROR_INTERNAL;
2507 }
2508 }
2509
2510 /* Dispose of any special jvmti environment */
2511 (void)JVMTI_FUNC_PTR(jvmti,DisposeEnvironment)(jvmti);
2512 return error;
2513 }
2514
2515 /* ********************************************************************* */
2516 /* Instance counts. */
2517
2518 /* Macros to convert a class or instance tag to an index and back again */
2519 #define INDEX2CLASSTAG(i) ((jlong)((i)+1))
2520 #define CLASSTAG2INDEX(t) (((int)(t))-1)
2521 #define JLONG_ABS(x) (((x)<(jlong)0)?-(x):(x))
2522
2523 /* Structure to hold class count heap traversal data (arg user_data) */
2524 typedef struct ClassCountData {
2525 int classCount;
2526 jlong *counts;
2527 jlong negObjTag;
2528 jvmtiError error;
2529 } ClassCountData;
2530
2531 /* Two different cbObjectCounter's, one for FollowReferences, one for
2532 * IterateThroughHeap. Pick a card, any card.
2533 */
2534
2535 /* Callback for object count heap traversal (heap_reference_callback) */
2536 static jint JNICALL
2537 cbObjectCounterFromRef(jvmtiHeapReferenceKind reference_kind,
2538 const jvmtiHeapReferenceInfo* reference_info, jlong class_tag,
2539 jlong referrer_class_tag, jlong size,
2540 jlong* tag_ptr, jlong* referrer_tag_ptr, jint length, void* user_data)
2541 {
2542 ClassCountData *data;
2543 int index;
2544 jlong jindex;
2545 jlong tag;
2546
2547 /* Check data structure */
2548 data = (ClassCountData*)user_data;
2549 if (data == NULL) {
2550 return JVMTI_VISIT_ABORT;
2551 }
2552
2553 /* Classes with no class_tag should have been filtered out. */
2554 if ( class_tag == (jlong)0 ) {
2555 data->error = AGENT_ERROR_INTERNAL;
2556 return JVMTI_VISIT_ABORT;
2557 }
2558
2559 /* Class tag not one we really want (jclass not in supplied list) */
2560 if ( class_tag == data->negObjTag ) {
2561 return JVMTI_VISIT_OBJECTS;
2562 }
2563
2564 /* If object tag is negative, just continue, we counted it */
2565 tag = (*tag_ptr);
2566 if ( tag < (jlong)0 ) {
2567 return JVMTI_VISIT_OBJECTS;
2568 }
2569
2570 /* Tag the object with a negative value just so we don't count it again */
2571 if ( tag == (jlong)0 ) {
2572 /* This object had no tag value, so we give it the negObjTag value */
2573 (*tag_ptr) = data->negObjTag;
2574 } else {
2575 /* If this object had a positive tag value, it must be one of the
2576 * jclass objects we tagged. We need to preserve the value of
2577 * this tag for later objects that might have this as a class
2578 * tag, so we just make the existing tag value negative.
2579 */
2580 (*tag_ptr) = -tag;
2581 }
2582
2583 /* Absolute value of class tag is an index into the counts[] array */
2584 jindex = JLONG_ABS(class_tag);
2585 index = CLASSTAG2INDEX(jindex);
2586 if (index < 0 || index >= data->classCount) {
2587 data->error = AGENT_ERROR_ILLEGAL_ARGUMENT;
2588 return JVMTI_VISIT_ABORT;
2589 }
2590
2591 /* Bump instance count on this class */
2592 data->counts[index]++;
2593 return JVMTI_VISIT_OBJECTS;
2594 }
2595
2596 /* Callback for instance count heap traversal (heap_iteration_callback) */
2597 static jint JNICALL
2598 cbObjectCounter(jlong class_tag, jlong size, jlong* tag_ptr, jint length,
2599 void* user_data)
2600 {
2601 ClassCountData *data;
2602 int index;
2603
2604 /* Check data structure */
2605 data = (ClassCountData*)user_data;
2606 if (data == NULL) {
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 return JVMTI_VISIT_ABORT;
2766 }
2767
2768 /* If we have tagged enough objects, just abort */
2769 if ( data->maxObjects != 0 && data->refCount >= data->maxObjects ) {
2770 return JVMTI_VISIT_ABORT;
2771 }
2772
2773 /* If not of interest, just continue */
2774 if ( (*tag_ptr) != data->objTag ) {
2775 return JVMTI_VISIT_OBJECTS;
2776 }
2777
2778 /* Self reference that we haven't counted? */
2779 if ( tag_ptr == referrer_tag_ptr ) {
2780 if ( data->selfRef == JNI_FALSE ) {
2781 data->selfRef = JNI_TRUE;
2782 data->refCount++;
2783 }
2784 return JVMTI_VISIT_OBJECTS;
2785 }
2786
2787 /* If the referrer can be tagged, and hasn't been tagged, tag it */
2788 if ( referrer_tag_ptr != NULL ) {
2789 if ( (*referrer_tag_ptr) == (jlong)0 ) {
2790 *referrer_tag_ptr = data->refTag;
2791 data->refCount++;
2792 }
2793 }
2794 return JVMTI_VISIT_OBJECTS;
2795 }
2796
2797 /* Heap traversal to find referrers of an object */
2798 jvmtiError
2799 objectReferrers(jobject obj, ObjectBatch *referrers, int maxObjects)
2800 {
2801 jvmtiHeapCallbacks heap_callbacks;
2802 ReferrerData data;
2803 jvmtiError error;
2804 jvmtiEnv *jvmti;
2805
2806 /* Check interface assumptions */
2807 if (obj == NULL) {
2808 return AGENT_ERROR_INVALID_OBJECT;
2809 }
2810 if (referrers == NULL || maxObjects < 0 ) {
2811 return AGENT_ERROR_ILLEGAL_ARGUMENT;
2812 }
2813
2814 /* Initialize return information */
2815 referrers->count = 0;
2816 referrers->objects = NULL;
2817
2818 /* Get jvmti environment to use */
2819 jvmti = getSpecialJvmti();
2820 if ( jvmti == NULL ) {
2821 return AGENT_ERROR_INTERNAL;
2822 }
2823
2824 /* Fill in the data structure passed around the callbacks */
2825 data.refCount = 0;
2826 data.maxObjects = maxObjects;
2827 data.objTag = (jlong)1;
2828 data.refTag = (jlong)2;
2829 data.selfRef = JNI_FALSE;
2830 data.error = JVMTI_ERROR_NONE;
2831
2832 /* Tag the object of interest */
2833 error = JVMTI_FUNC_PTR(jvmti,SetTag) (jvmti, obj, data.objTag);
2834
2835 /* No need to go any further if we can't tag the object */
2836 if ( error == JVMTI_ERROR_NONE ) {
2837
2838 /* Clear out callbacks structure */
2839 (void)memset(&heap_callbacks,0,sizeof(heap_callbacks));
2840
2841 /* Setup callbacks we want */
2842 heap_callbacks.heap_reference_callback = &cbObjectTagReferrer;
2843
2844 /* Follow references, no initiating object, all classes, 1 tagged objs */
2845 error = JVMTI_FUNC_PTR(jvmti,FollowReferences)
2846 (jvmti, JVMTI_HEAP_FILTER_UNTAGGED,
2847 NULL, NULL, &heap_callbacks, &data);
2848
2849 /* Use data error if needed */
2850 if ( error == JVMTI_ERROR_NONE ) {
2851 error = data.error;
2852 }
2853
2854 }
2855
2856 /* Watch out for self-reference */
2857 if ( error == JVMTI_ERROR_NONE && data.selfRef == JNI_TRUE ) {
2858 /* Tag itself as a referer */
2859 error = JVMTI_FUNC_PTR(jvmti,SetTag) (jvmti, obj, data.refTag);
2860 }
2861
2862 /* Get the jobjects for the tagged referrer objects. */
2863 if ( error == JVMTI_ERROR_NONE ) {
2864 error = JVMTI_FUNC_PTR(jvmti,GetObjectsWithTags)
2865 (jvmti, 1, &(data.refTag), &(referrers->count),
2866 &(referrers->objects), NULL);
2867 /* Verify we got the count we expected */
2868 if ( data.refCount != referrers->count ) {
2869 error = AGENT_ERROR_INTERNAL;
2870 }
2871 }
2872
2873 /* Dispose of any special jvmti environment */
2874 (void)JVMTI_FUNC_PTR(jvmti,DisposeEnvironment)(jvmti);
2875 return error;
2876 }