1 /*
2 * Copyright (c) 1998, 2018, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. 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
saveGlobalRef(JNIEnv * env,jobject obj,jobject * pobj)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
tossGlobalRef(JNIEnv * env,jobject * pobj)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
findClass(JNIEnv * env,const char * name)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
getMethod(JNIEnv * env,jclass clazz,const char * name,const char * signature)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
getStaticMethod(JNIEnv * env,jclass clazz,const char * name,const char * signature)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
util_initialize(JNIEnv * env)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
util_reset(void)288 util_reset(void)
289 {
290 }
291
292 jboolean
isObjectTag(jbyte tag)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
specificTypeKey(JNIEnv * env,jobject object)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
writeFieldValue(JNIEnv * env,PacketOutputStream * out,jobject object,jfieldID field)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
writeStaticFieldValue(JNIEnv * env,PacketOutputStream * out,jclass clazz,jfieldID field)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
sharedGetFieldValues(PacketInputStream * in,PacketOutputStream * out,jboolean isStatic)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
sharedInvoke(PacketInputStream * in,PacketOutputStream * out)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
uniqueID(void)624 uniqueID(void)
625 {
626 static jint currentID = 0;
627 return currentID++;
628 }
629
630 int
filterDebugThreads(jthread * threads,int count)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
referenceTypeTag(jclass clazz)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
fieldModifiers(jclass clazz,jfieldID field,jint * pmodifiers)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
methodModifiers(jmethodID method,jint * pmodifiers)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
methodClass(jmethodID method,jclass * pclazz)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
methodLocation(jmethodID method,jlocation * ploc1,jlocation * ploc2)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
methodSignature(jmethodID method,char ** pname,char ** psignature,char ** pgeneric_signature)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
methodReturnType(jmethodID method,char * typeKey)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
classLoader(jclass clazz,jobject * pclazz)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
fieldSignature(jclass clazz,jfieldID field,char ** pname,char ** psignature,char ** pgeneric_signature)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 *
getEnv(void)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
spawnNewThread(jvmtiStartFunction func,void * arg,char * name)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
jvmtiGetCapabilities(jvmtiCapabilities * caps)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
jvmtiVersion(void)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
jvmtiMajorVersion(void)943 jvmtiMajorVersion(void)
944 {
945 return (jvmtiVersion() & JVMTI_VERSION_MASK_MAJOR)
946 >> JVMTI_VERSION_SHIFT_MAJOR;
947 }
948
949 jint
jvmtiMinorVersion(void)950 jvmtiMinorVersion(void)
951 {
952 return (jvmtiVersion() & JVMTI_VERSION_MASK_MINOR)
953 >> JVMTI_VERSION_SHIFT_MINOR;
954 }
955
956 jint
jvmtiMicroVersion(void)957 jvmtiMicroVersion(void)
958 {
959 return (jvmtiVersion() & JVMTI_VERSION_MASK_MICRO)
960 >> JVMTI_VERSION_SHIFT_MICRO;
961 }
962
963 jboolean
canSuspendResumeThreadLists(void)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
getSourceDebugExtension(jclass clazz,char ** extensionPtr)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
convertSignatureToClassname(char * convert)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
handleInterrupt(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
ignore_vm_death(jvmtiError error)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
debugMonitorEnter(jrawMonitorID monitor)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
debugMonitorExit(jrawMonitorID monitor)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
debugMonitorWait(jrawMonitorID monitor)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
debugMonitorTimedWait(jrawMonitorID monitor,jlong millis)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
debugMonitorNotify(jrawMonitorID monitor)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
debugMonitorNotifyAll(jrawMonitorID monitor)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
debugMonitorCreate(char * name)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
debugMonitorDestroy(jrawMonitorID monitor)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 *
allThreads(jint * count)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
threadGroupInfo(jthreadGroup group,jvmtiThreadGroupInfo * info)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
classSignature(jclass clazz,char ** psignature,char ** pgeneric_signature)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 *
getClassname(jclass clazz)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
writeGenericSignature(PacketOutputStream * out,char * genericSignature)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
classStatus(jclass clazz)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
isArrayClass(jclass clazz)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
isInterface(jclass clazz)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
isFieldSynthetic(jclass clazz,jfieldID field,jboolean * psynthetic)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
isMethodSynthetic(jmethodID method,jboolean * psynthetic)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
isMethodNative(jmethodID method)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
isSameObject(JNIEnv * env,jobject o1,jobject o2)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
objectHashCode(jobject object)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
allInterfaces(jclass clazz,jclass ** ppinterfaces,jint * pcount)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
allLoadedClasses(jclass ** ppclasses,jint * pcount)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
allClassLoaderClasses(jobject loader,jclass ** ppclasses,jint * pcount)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
is_a_nested_class(char * outer_sig,int outer_sig_len,char * sig,int sep)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
allNestedClasses(jclass parent_clazz,jclass ** ppnested,jint * pcount)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
createLocalRefSpace(JNIEnv * env,jint capacity)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
isClass(jobject object)1582 isClass(jobject object)
1583 {
1584 JNIEnv *env = getEnv();
1585 return JNI_FUNC_PTR(env,IsInstanceOf)(env, object, gdata->classClass);
1586 }
1587
1588 jboolean
isThread(jobject object)1589 isThread(jobject object)
1590 {
1591 JNIEnv *env = getEnv();
1592 return JNI_FUNC_PTR(env,IsInstanceOf)(env, object, gdata->threadClass);
1593 }
1594
1595 jboolean
isThreadGroup(jobject object)1596 isThreadGroup(jobject object)
1597 {
1598 JNIEnv *env = getEnv();
1599 return JNI_FUNC_PTR(env,IsInstanceOf)(env, object, gdata->threadGroupClass);
1600 }
1601
1602 jboolean
isString(jobject object)1603 isString(jobject object)
1604 {
1605 JNIEnv *env = getEnv();
1606 return JNI_FUNC_PTR(env,IsInstanceOf)(env, object, gdata->stringClass);
1607 }
1608
1609 jboolean
isClassLoader(jobject object)1610 isClassLoader(jobject object)
1611 {
1612 JNIEnv *env = getEnv();
1613 return JNI_FUNC_PTR(env,IsInstanceOf)(env, object, gdata->classLoaderClass);
1614 }
1615
1616 jboolean
isArray(jobject object)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
getPropertyValue(JNIEnv * env,char * propertyName)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
setAgentPropertyValue(JNIEnv * env,char * propertyName,char * propertyValue)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 *
getPropertyUTF8(JNIEnv * env,char * propertyName)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
isMethodObsolete(jmethodID method)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 *
getSpecialJvmti(void)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
writeCodeLocation(PacketOutputStream * out,jclass clazz,jmethodID method,jlocation location)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 *
jvmtiAllocate(jint numBytes)1787 jvmtiAllocate(jint numBytes)
1788 {
1789 void *ptr;
1790 jvmtiError error;
1791 if ( numBytes == 0 ) {
1792 return NULL;
1793 }
1794 error = FUNC_PTR(gdata->jvmti,Allocate)
1795 (gdata->jvmti, numBytes, (unsigned char**)&ptr);
1796 if (error != JVMTI_ERROR_NONE ) {
1797 EXIT_ERROR(error, "Can't allocate jvmti memory");
1798 }
1799 return ptr;
1800 }
1801
1802 void
jvmtiDeallocate(void * ptr)1803 jvmtiDeallocate(void *ptr)
1804 {
1805 jvmtiError error;
1806 if ( ptr == NULL ) {
1807 return;
1808 }
1809 error = FUNC_PTR(gdata->jvmti,Deallocate)
1810 (gdata->jvmti, ptr);
1811 if (error != JVMTI_ERROR_NONE ) {
1812 EXIT_ERROR(error, "Can't deallocate jvmti memory");
1813 }
1814 }
1815
1816 /* Rarely needed, transport library uses JDWP errors, only use? */
1817 jvmtiError
map2jvmtiError(jdwpError error)1818 map2jvmtiError(jdwpError error)
1819 {
1820 switch ( error ) {
1821 case JDWP_ERROR(NONE):
1822 return JVMTI_ERROR_NONE;
1823 case JDWP_ERROR(INVALID_THREAD):
1824 return JVMTI_ERROR_INVALID_THREAD;
1825 case JDWP_ERROR(INVALID_THREAD_GROUP):
1826 return JVMTI_ERROR_INVALID_THREAD_GROUP;
1827 case JDWP_ERROR(INVALID_PRIORITY):
1828 return JVMTI_ERROR_INVALID_PRIORITY;
1829 case JDWP_ERROR(THREAD_NOT_SUSPENDED):
1830 return JVMTI_ERROR_THREAD_NOT_SUSPENDED;
1831 case JDWP_ERROR(THREAD_SUSPENDED):
1832 return JVMTI_ERROR_THREAD_SUSPENDED;
1833 case JDWP_ERROR(INVALID_OBJECT):
1834 return JVMTI_ERROR_INVALID_OBJECT;
1835 case JDWP_ERROR(INVALID_CLASS):
1836 return JVMTI_ERROR_INVALID_CLASS;
1837 case JDWP_ERROR(CLASS_NOT_PREPARED):
1838 return JVMTI_ERROR_CLASS_NOT_PREPARED;
1839 case JDWP_ERROR(INVALID_METHODID):
1840 return JVMTI_ERROR_INVALID_METHODID;
1841 case JDWP_ERROR(INVALID_LOCATION):
1842 return JVMTI_ERROR_INVALID_LOCATION;
1843 case JDWP_ERROR(INVALID_FIELDID):
1844 return JVMTI_ERROR_INVALID_FIELDID;
1845 case JDWP_ERROR(INVALID_FRAMEID):
1846 return AGENT_ERROR_INVALID_FRAMEID;
1847 case JDWP_ERROR(NO_MORE_FRAMES):
1848 return JVMTI_ERROR_NO_MORE_FRAMES;
1849 case JDWP_ERROR(OPAQUE_FRAME):
1850 return JVMTI_ERROR_OPAQUE_FRAME;
1851 case JDWP_ERROR(NOT_CURRENT_FRAME):
1852 return AGENT_ERROR_NOT_CURRENT_FRAME;
1853 case JDWP_ERROR(TYPE_MISMATCH):
1854 return JVMTI_ERROR_TYPE_MISMATCH;
1855 case JDWP_ERROR(INVALID_SLOT):
1856 return JVMTI_ERROR_INVALID_SLOT;
1857 case JDWP_ERROR(DUPLICATE):
1858 return JVMTI_ERROR_DUPLICATE;
1859 case JDWP_ERROR(NOT_FOUND):
1860 return JVMTI_ERROR_NOT_FOUND;
1861 case JDWP_ERROR(INVALID_MONITOR):
1862 return JVMTI_ERROR_INVALID_MONITOR;
1863 case JDWP_ERROR(NOT_MONITOR_OWNER):
1864 return JVMTI_ERROR_NOT_MONITOR_OWNER;
1865 case JDWP_ERROR(INTERRUPT):
1866 return JVMTI_ERROR_INTERRUPT;
1867 case JDWP_ERROR(INVALID_CLASS_FORMAT):
1868 return JVMTI_ERROR_INVALID_CLASS_FORMAT;
1869 case JDWP_ERROR(CIRCULAR_CLASS_DEFINITION):
1870 return JVMTI_ERROR_CIRCULAR_CLASS_DEFINITION;
1871 case JDWP_ERROR(FAILS_VERIFICATION):
1872 return JVMTI_ERROR_FAILS_VERIFICATION;
1873 case JDWP_ERROR(ADD_METHOD_NOT_IMPLEMENTED):
1874 return JVMTI_ERROR_UNSUPPORTED_REDEFINITION_METHOD_ADDED;
1875 case JDWP_ERROR(SCHEMA_CHANGE_NOT_IMPLEMENTED):
1876 return JVMTI_ERROR_UNSUPPORTED_REDEFINITION_SCHEMA_CHANGED;
1877 case JDWP_ERROR(INVALID_TYPESTATE):
1878 return JVMTI_ERROR_INVALID_TYPESTATE;
1879 case JDWP_ERROR(HIERARCHY_CHANGE_NOT_IMPLEMENTED):
1880 return JVMTI_ERROR_UNSUPPORTED_REDEFINITION_HIERARCHY_CHANGED;
1881 case JDWP_ERROR(DELETE_METHOD_NOT_IMPLEMENTED):
1882 return JVMTI_ERROR_UNSUPPORTED_REDEFINITION_METHOD_DELETED;
1883 case JDWP_ERROR(UNSUPPORTED_VERSION):
1884 return JVMTI_ERROR_UNSUPPORTED_VERSION;
1885 case JDWP_ERROR(NAMES_DONT_MATCH):
1886 return JVMTI_ERROR_NAMES_DONT_MATCH;
1887 case JDWP_ERROR(CLASS_MODIFIERS_CHANGE_NOT_IMPLEMENTED):
1888 return JVMTI_ERROR_UNSUPPORTED_REDEFINITION_CLASS_MODIFIERS_CHANGED;
1889 case JDWP_ERROR(METHOD_MODIFIERS_CHANGE_NOT_IMPLEMENTED):
1890 return JVMTI_ERROR_UNSUPPORTED_REDEFINITION_METHOD_MODIFIERS_CHANGED;
1891 case JDWP_ERROR(CLASS_ATTRIBUTE_CHANGE_NOT_IMPLEMENTED):
1892 return JVMTI_ERROR_UNSUPPORTED_REDEFINITION_CLASS_ATTRIBUTE_CHANGED;
1893 case JDWP_ERROR(NOT_IMPLEMENTED):
1894 return JVMTI_ERROR_NOT_AVAILABLE;
1895 case JDWP_ERROR(NULL_POINTER):
1896 return JVMTI_ERROR_NULL_POINTER;
1897 case JDWP_ERROR(ABSENT_INFORMATION):
1898 return JVMTI_ERROR_ABSENT_INFORMATION;
1899 case JDWP_ERROR(INVALID_EVENT_TYPE):
1900 return JVMTI_ERROR_INVALID_EVENT_TYPE;
1901 case JDWP_ERROR(ILLEGAL_ARGUMENT):
1902 return JVMTI_ERROR_ILLEGAL_ARGUMENT;
1903 case JDWP_ERROR(OUT_OF_MEMORY):
1904 return JVMTI_ERROR_OUT_OF_MEMORY;
1905 case JDWP_ERROR(ACCESS_DENIED):
1906 return JVMTI_ERROR_ACCESS_DENIED;
1907 case JDWP_ERROR(VM_DEAD):
1908 return JVMTI_ERROR_WRONG_PHASE;
1909 case JDWP_ERROR(UNATTACHED_THREAD):
1910 return JVMTI_ERROR_UNATTACHED_THREAD;
1911 case JDWP_ERROR(INVALID_TAG):
1912 return AGENT_ERROR_INVALID_TAG;
1913 case JDWP_ERROR(ALREADY_INVOKING):
1914 return AGENT_ERROR_ALREADY_INVOKING;
1915 case JDWP_ERROR(INVALID_INDEX):
1916 return AGENT_ERROR_INVALID_INDEX;
1917 case JDWP_ERROR(INVALID_LENGTH):
1918 return AGENT_ERROR_INVALID_LENGTH;
1919 case JDWP_ERROR(INVALID_STRING):
1920 return AGENT_ERROR_INVALID_STRING;
1921 case JDWP_ERROR(INVALID_CLASS_LOADER):
1922 return AGENT_ERROR_INVALID_CLASS_LOADER;
1923 case JDWP_ERROR(INVALID_ARRAY):
1924 return AGENT_ERROR_INVALID_ARRAY;
1925 case JDWP_ERROR(TRANSPORT_LOAD):
1926 return AGENT_ERROR_TRANSPORT_LOAD;
1927 case JDWP_ERROR(TRANSPORT_INIT):
1928 return AGENT_ERROR_TRANSPORT_INIT;
1929 case JDWP_ERROR(NATIVE_METHOD):
1930 return AGENT_ERROR_NATIVE_METHOD;
1931 case JDWP_ERROR(INVALID_COUNT):
1932 return AGENT_ERROR_INVALID_COUNT;
1933 case JDWP_ERROR(INTERNAL):
1934 return AGENT_ERROR_JDWP_INTERNAL;
1935 }
1936 return AGENT_ERROR_INTERNAL;
1937 }
1938
1939 static jvmtiEvent index2jvmti[EI_max-EI_min+1];
1940 static jdwpEvent index2jdwp [EI_max-EI_min+1];
1941
1942 void
eventIndexInit(void)1943 eventIndexInit(void)
1944 {
1945 (void)memset(index2jvmti, 0, (int)sizeof(index2jvmti));
1946 (void)memset(index2jdwp, 0, (int)sizeof(index2jdwp));
1947
1948 index2jvmti[EI_SINGLE_STEP -EI_min] = JVMTI_EVENT_SINGLE_STEP;
1949 index2jvmti[EI_BREAKPOINT -EI_min] = JVMTI_EVENT_BREAKPOINT;
1950 index2jvmti[EI_FRAME_POP -EI_min] = JVMTI_EVENT_FRAME_POP;
1951 index2jvmti[EI_EXCEPTION -EI_min] = JVMTI_EVENT_EXCEPTION;
1952 index2jvmti[EI_THREAD_START -EI_min] = JVMTI_EVENT_THREAD_START;
1953 index2jvmti[EI_THREAD_END -EI_min] = JVMTI_EVENT_THREAD_END;
1954 index2jvmti[EI_CLASS_PREPARE -EI_min] = JVMTI_EVENT_CLASS_PREPARE;
1955 index2jvmti[EI_GC_FINISH -EI_min] = JVMTI_EVENT_GARBAGE_COLLECTION_FINISH;
1956 index2jvmti[EI_CLASS_LOAD -EI_min] = JVMTI_EVENT_CLASS_LOAD;
1957 index2jvmti[EI_FIELD_ACCESS -EI_min] = JVMTI_EVENT_FIELD_ACCESS;
1958 index2jvmti[EI_FIELD_MODIFICATION -EI_min] = JVMTI_EVENT_FIELD_MODIFICATION;
1959 index2jvmti[EI_EXCEPTION_CATCH -EI_min] = JVMTI_EVENT_EXCEPTION_CATCH;
1960 index2jvmti[EI_METHOD_ENTRY -EI_min] = JVMTI_EVENT_METHOD_ENTRY;
1961 index2jvmti[EI_METHOD_EXIT -EI_min] = JVMTI_EVENT_METHOD_EXIT;
1962 index2jvmti[EI_MONITOR_CONTENDED_ENTER -EI_min] = JVMTI_EVENT_MONITOR_CONTENDED_ENTER;
1963 index2jvmti[EI_MONITOR_CONTENDED_ENTERED -EI_min] = JVMTI_EVENT_MONITOR_CONTENDED_ENTERED;
1964 index2jvmti[EI_MONITOR_WAIT -EI_min] = JVMTI_EVENT_MONITOR_WAIT;
1965 index2jvmti[EI_MONITOR_WAITED -EI_min] = JVMTI_EVENT_MONITOR_WAITED;
1966 index2jvmti[EI_VM_INIT -EI_min] = JVMTI_EVENT_VM_INIT;
1967 index2jvmti[EI_VM_DEATH -EI_min] = JVMTI_EVENT_VM_DEATH;
1968
1969 index2jdwp[EI_SINGLE_STEP -EI_min] = JDWP_EVENT(SINGLE_STEP);
1970 index2jdwp[EI_BREAKPOINT -EI_min] = JDWP_EVENT(BREAKPOINT);
1971 index2jdwp[EI_FRAME_POP -EI_min] = JDWP_EVENT(FRAME_POP);
1972 index2jdwp[EI_EXCEPTION -EI_min] = JDWP_EVENT(EXCEPTION);
1973 index2jdwp[EI_THREAD_START -EI_min] = JDWP_EVENT(THREAD_START);
1974 index2jdwp[EI_THREAD_END -EI_min] = JDWP_EVENT(THREAD_END);
1975 index2jdwp[EI_CLASS_PREPARE -EI_min] = JDWP_EVENT(CLASS_PREPARE);
1976 index2jdwp[EI_GC_FINISH -EI_min] = JDWP_EVENT(CLASS_UNLOAD);
1977 index2jdwp[EI_CLASS_LOAD -EI_min] = JDWP_EVENT(CLASS_LOAD);
1978 index2jdwp[EI_FIELD_ACCESS -EI_min] = JDWP_EVENT(FIELD_ACCESS);
1979 index2jdwp[EI_FIELD_MODIFICATION -EI_min] = JDWP_EVENT(FIELD_MODIFICATION);
1980 index2jdwp[EI_EXCEPTION_CATCH -EI_min] = JDWP_EVENT(EXCEPTION_CATCH);
1981 index2jdwp[EI_METHOD_ENTRY -EI_min] = JDWP_EVENT(METHOD_ENTRY);
1982 index2jdwp[EI_METHOD_EXIT -EI_min] = JDWP_EVENT(METHOD_EXIT);
1983 index2jdwp[EI_MONITOR_CONTENDED_ENTER -EI_min] = JDWP_EVENT(MONITOR_CONTENDED_ENTER);
1984 index2jdwp[EI_MONITOR_CONTENDED_ENTERED -EI_min] = JDWP_EVENT(MONITOR_CONTENDED_ENTERED);
1985 index2jdwp[EI_MONITOR_WAIT -EI_min] = JDWP_EVENT(MONITOR_WAIT);
1986 index2jdwp[EI_MONITOR_WAITED -EI_min] = JDWP_EVENT(MONITOR_WAITED);
1987 index2jdwp[EI_VM_INIT -EI_min] = JDWP_EVENT(VM_INIT);
1988 index2jdwp[EI_VM_DEATH -EI_min] = JDWP_EVENT(VM_DEATH);
1989 }
1990
1991 jdwpEvent
eventIndex2jdwp(EventIndex i)1992 eventIndex2jdwp(EventIndex i)
1993 {
1994 if ( i < EI_min || i > EI_max ) {
1995 EXIT_ERROR(AGENT_ERROR_INVALID_INDEX,"bad EventIndex");
1996 }
1997 return index2jdwp[i-EI_min];
1998 }
1999
2000 jvmtiEvent
eventIndex2jvmti(EventIndex i)2001 eventIndex2jvmti(EventIndex i)
2002 {
2003 if ( i < EI_min || i > EI_max ) {
2004 EXIT_ERROR(AGENT_ERROR_INVALID_INDEX,"bad EventIndex");
2005 }
2006 return index2jvmti[i-EI_min];
2007 }
2008
2009 EventIndex
jdwp2EventIndex(jdwpEvent eventType)2010 jdwp2EventIndex(jdwpEvent eventType)
2011 {
2012 switch ( eventType ) {
2013 case JDWP_EVENT(SINGLE_STEP):
2014 return EI_SINGLE_STEP;
2015 case JDWP_EVENT(BREAKPOINT):
2016 return EI_BREAKPOINT;
2017 case JDWP_EVENT(FRAME_POP):
2018 return EI_FRAME_POP;
2019 case JDWP_EVENT(EXCEPTION):
2020 return EI_EXCEPTION;
2021 case JDWP_EVENT(THREAD_START):
2022 return EI_THREAD_START;
2023 case JDWP_EVENT(THREAD_END):
2024 return EI_THREAD_END;
2025 case JDWP_EVENT(CLASS_PREPARE):
2026 return EI_CLASS_PREPARE;
2027 case JDWP_EVENT(CLASS_UNLOAD):
2028 return EI_GC_FINISH;
2029 case JDWP_EVENT(CLASS_LOAD):
2030 return EI_CLASS_LOAD;
2031 case JDWP_EVENT(FIELD_ACCESS):
2032 return EI_FIELD_ACCESS;
2033 case JDWP_EVENT(FIELD_MODIFICATION):
2034 return EI_FIELD_MODIFICATION;
2035 case JDWP_EVENT(EXCEPTION_CATCH):
2036 return EI_EXCEPTION_CATCH;
2037 case JDWP_EVENT(METHOD_ENTRY):
2038 return EI_METHOD_ENTRY;
2039 case JDWP_EVENT(METHOD_EXIT):
2040 return EI_METHOD_EXIT;
2041 case JDWP_EVENT(METHOD_EXIT_WITH_RETURN_VALUE):
2042 return EI_METHOD_EXIT;
2043 case JDWP_EVENT(MONITOR_CONTENDED_ENTER):
2044 return EI_MONITOR_CONTENDED_ENTER;
2045 case JDWP_EVENT(MONITOR_CONTENDED_ENTERED):
2046 return EI_MONITOR_CONTENDED_ENTERED;
2047 case JDWP_EVENT(MONITOR_WAIT):
2048 return EI_MONITOR_WAIT;
2049 case JDWP_EVENT(MONITOR_WAITED):
2050 return EI_MONITOR_WAITED;
2051 case JDWP_EVENT(VM_INIT):
2052 return EI_VM_INIT;
2053 case JDWP_EVENT(VM_DEATH):
2054 return EI_VM_DEATH;
2055 default:
2056 break;
2057 }
2058
2059 /*
2060 * Event type not recognized - don't exit with error as caller
2061 * may wish to return error to debugger.
2062 */
2063 return (EventIndex)0;
2064 }
2065
2066 EventIndex
jvmti2EventIndex(jvmtiEvent kind)2067 jvmti2EventIndex(jvmtiEvent kind)
2068 {
2069 switch ( kind ) {
2070 case JVMTI_EVENT_SINGLE_STEP:
2071 return EI_SINGLE_STEP;
2072 case JVMTI_EVENT_BREAKPOINT:
2073 return EI_BREAKPOINT;
2074 case JVMTI_EVENT_FRAME_POP:
2075 return EI_FRAME_POP;
2076 case JVMTI_EVENT_EXCEPTION:
2077 return EI_EXCEPTION;
2078 case JVMTI_EVENT_THREAD_START:
2079 return EI_THREAD_START;
2080 case JVMTI_EVENT_THREAD_END:
2081 return EI_THREAD_END;
2082 case JVMTI_EVENT_CLASS_PREPARE:
2083 return EI_CLASS_PREPARE;
2084 case JVMTI_EVENT_GARBAGE_COLLECTION_FINISH:
2085 return EI_GC_FINISH;
2086 case JVMTI_EVENT_CLASS_LOAD:
2087 return EI_CLASS_LOAD;
2088 case JVMTI_EVENT_FIELD_ACCESS:
2089 return EI_FIELD_ACCESS;
2090 case JVMTI_EVENT_FIELD_MODIFICATION:
2091 return EI_FIELD_MODIFICATION;
2092 case JVMTI_EVENT_EXCEPTION_CATCH:
2093 return EI_EXCEPTION_CATCH;
2094 case JVMTI_EVENT_METHOD_ENTRY:
2095 return EI_METHOD_ENTRY;
2096 case JVMTI_EVENT_METHOD_EXIT:
2097 return EI_METHOD_EXIT;
2098 /*
2099 * There is no JVMTI_EVENT_METHOD_EXIT_WITH_RETURN_VALUE.
2100 * The normal JVMTI_EVENT_METHOD_EXIT always contains the return value.
2101 */
2102 case JVMTI_EVENT_MONITOR_CONTENDED_ENTER:
2103 return EI_MONITOR_CONTENDED_ENTER;
2104 case JVMTI_EVENT_MONITOR_CONTENDED_ENTERED:
2105 return EI_MONITOR_CONTENDED_ENTERED;
2106 case JVMTI_EVENT_MONITOR_WAIT:
2107 return EI_MONITOR_WAIT;
2108 case JVMTI_EVENT_MONITOR_WAITED:
2109 return EI_MONITOR_WAITED;
2110 case JVMTI_EVENT_VM_INIT:
2111 return EI_VM_INIT;
2112 case JVMTI_EVENT_VM_DEATH:
2113 return EI_VM_DEATH;
2114 default:
2115 EXIT_ERROR(AGENT_ERROR_INVALID_INDEX,"JVMTI to EventIndex mapping");
2116 break;
2117 }
2118 return (EventIndex)0;
2119 }
2120
2121 /* This routine is commonly used, maps jvmti and agent errors to the best
2122 * jdwp error code we can map to.
2123 */
2124 jdwpError
map2jdwpError(jvmtiError error)2125 map2jdwpError(jvmtiError error)
2126 {
2127 switch ( (int)error ) {
2128 case JVMTI_ERROR_NONE:
2129 return JDWP_ERROR(NONE);
2130 case AGENT_ERROR_INVALID_THREAD:
2131 case JVMTI_ERROR_INVALID_THREAD:
2132 return JDWP_ERROR(INVALID_THREAD);
2133 case JVMTI_ERROR_INVALID_THREAD_GROUP:
2134 return JDWP_ERROR(INVALID_THREAD_GROUP);
2135 case JVMTI_ERROR_INVALID_PRIORITY:
2136 return JDWP_ERROR(INVALID_PRIORITY);
2137 case JVMTI_ERROR_THREAD_NOT_SUSPENDED:
2138 return JDWP_ERROR(THREAD_NOT_SUSPENDED);
2139 case JVMTI_ERROR_THREAD_SUSPENDED:
2140 return JDWP_ERROR(THREAD_SUSPENDED);
2141 case JVMTI_ERROR_THREAD_NOT_ALIVE:
2142 return JDWP_ERROR(INVALID_THREAD);
2143 case AGENT_ERROR_INVALID_OBJECT:
2144 case JVMTI_ERROR_INVALID_OBJECT:
2145 return JDWP_ERROR(INVALID_OBJECT);
2146 case JVMTI_ERROR_INVALID_CLASS:
2147 return JDWP_ERROR(INVALID_CLASS);
2148 case JVMTI_ERROR_CLASS_NOT_PREPARED:
2149 return JDWP_ERROR(CLASS_NOT_PREPARED);
2150 case JVMTI_ERROR_INVALID_METHODID:
2151 return JDWP_ERROR(INVALID_METHODID);
2152 case JVMTI_ERROR_INVALID_LOCATION:
2153 return JDWP_ERROR(INVALID_LOCATION);
2154 case JVMTI_ERROR_INVALID_FIELDID:
2155 return JDWP_ERROR(INVALID_FIELDID);
2156 case AGENT_ERROR_NO_MORE_FRAMES:
2157 case JVMTI_ERROR_NO_MORE_FRAMES:
2158 return JDWP_ERROR(NO_MORE_FRAMES);
2159 case JVMTI_ERROR_OPAQUE_FRAME:
2160 return JDWP_ERROR(OPAQUE_FRAME);
2161 case JVMTI_ERROR_TYPE_MISMATCH:
2162 return JDWP_ERROR(TYPE_MISMATCH);
2163 case JVMTI_ERROR_INVALID_SLOT:
2164 return JDWP_ERROR(INVALID_SLOT);
2165 case JVMTI_ERROR_DUPLICATE:
2166 return JDWP_ERROR(DUPLICATE);
2167 case JVMTI_ERROR_NOT_FOUND:
2168 return JDWP_ERROR(NOT_FOUND);
2169 case JVMTI_ERROR_INVALID_MONITOR:
2170 return JDWP_ERROR(INVALID_MONITOR);
2171 case JVMTI_ERROR_NOT_MONITOR_OWNER:
2172 return JDWP_ERROR(NOT_MONITOR_OWNER);
2173 case JVMTI_ERROR_INTERRUPT:
2174 return JDWP_ERROR(INTERRUPT);
2175 case JVMTI_ERROR_INVALID_CLASS_FORMAT:
2176 return JDWP_ERROR(INVALID_CLASS_FORMAT);
2177 case JVMTI_ERROR_CIRCULAR_CLASS_DEFINITION:
2178 return JDWP_ERROR(CIRCULAR_CLASS_DEFINITION);
2179 case JVMTI_ERROR_FAILS_VERIFICATION:
2180 return JDWP_ERROR(FAILS_VERIFICATION);
2181 case JVMTI_ERROR_INVALID_TYPESTATE:
2182 return JDWP_ERROR(INVALID_TYPESTATE);
2183 case JVMTI_ERROR_UNSUPPORTED_VERSION:
2184 return JDWP_ERROR(UNSUPPORTED_VERSION);
2185 case JVMTI_ERROR_NAMES_DONT_MATCH:
2186 return JDWP_ERROR(NAMES_DONT_MATCH);
2187 case AGENT_ERROR_NULL_POINTER:
2188 case JVMTI_ERROR_NULL_POINTER:
2189 return JDWP_ERROR(NULL_POINTER);
2190 case JVMTI_ERROR_ABSENT_INFORMATION:
2191 return JDWP_ERROR(ABSENT_INFORMATION);
2192 case AGENT_ERROR_INVALID_EVENT_TYPE:
2193 case JVMTI_ERROR_INVALID_EVENT_TYPE:
2194 return JDWP_ERROR(INVALID_EVENT_TYPE);
2195 case AGENT_ERROR_ILLEGAL_ARGUMENT:
2196 case JVMTI_ERROR_ILLEGAL_ARGUMENT:
2197 return JDWP_ERROR(ILLEGAL_ARGUMENT);
2198 case JVMTI_ERROR_OUT_OF_MEMORY:
2199 case AGENT_ERROR_OUT_OF_MEMORY:
2200 return JDWP_ERROR(OUT_OF_MEMORY);
2201 case JVMTI_ERROR_ACCESS_DENIED:
2202 return JDWP_ERROR(ACCESS_DENIED);
2203 case JVMTI_ERROR_WRONG_PHASE:
2204 case AGENT_ERROR_VM_DEAD:
2205 case AGENT_ERROR_NO_JNI_ENV:
2206 return JDWP_ERROR(VM_DEAD);
2207 case AGENT_ERROR_JNI_EXCEPTION:
2208 case JVMTI_ERROR_UNATTACHED_THREAD:
2209 return JDWP_ERROR(UNATTACHED_THREAD);
2210 case JVMTI_ERROR_NOT_AVAILABLE:
2211 case JVMTI_ERROR_MUST_POSSESS_CAPABILITY:
2212 return JDWP_ERROR(NOT_IMPLEMENTED);
2213 case JVMTI_ERROR_UNSUPPORTED_REDEFINITION_HIERARCHY_CHANGED:
2214 return JDWP_ERROR(HIERARCHY_CHANGE_NOT_IMPLEMENTED);
2215 case JVMTI_ERROR_UNSUPPORTED_REDEFINITION_METHOD_DELETED:
2216 return JDWP_ERROR(DELETE_METHOD_NOT_IMPLEMENTED);
2217 case JVMTI_ERROR_UNSUPPORTED_REDEFINITION_METHOD_ADDED:
2218 return JDWP_ERROR(ADD_METHOD_NOT_IMPLEMENTED);
2219 case JVMTI_ERROR_UNSUPPORTED_REDEFINITION_SCHEMA_CHANGED:
2220 return JDWP_ERROR(SCHEMA_CHANGE_NOT_IMPLEMENTED);
2221 case JVMTI_ERROR_UNSUPPORTED_REDEFINITION_CLASS_MODIFIERS_CHANGED:
2222 return JDWP_ERROR(CLASS_MODIFIERS_CHANGE_NOT_IMPLEMENTED);
2223 case JVMTI_ERROR_UNSUPPORTED_REDEFINITION_METHOD_MODIFIERS_CHANGED:
2224 return JDWP_ERROR(METHOD_MODIFIERS_CHANGE_NOT_IMPLEMENTED);
2225 case JVMTI_ERROR_UNSUPPORTED_REDEFINITION_CLASS_ATTRIBUTE_CHANGED:
2226 return JDWP_ERROR(CLASS_ATTRIBUTE_CHANGE_NOT_IMPLEMENTED);
2227 case AGENT_ERROR_NOT_CURRENT_FRAME:
2228 return JDWP_ERROR(NOT_CURRENT_FRAME);
2229 case AGENT_ERROR_INVALID_TAG:
2230 return JDWP_ERROR(INVALID_TAG);
2231 case AGENT_ERROR_ALREADY_INVOKING:
2232 return JDWP_ERROR(ALREADY_INVOKING);
2233 case AGENT_ERROR_INVALID_INDEX:
2234 return JDWP_ERROR(INVALID_INDEX);
2235 case AGENT_ERROR_INVALID_LENGTH:
2236 return JDWP_ERROR(INVALID_LENGTH);
2237 case AGENT_ERROR_INVALID_STRING:
2238 return JDWP_ERROR(INVALID_STRING);
2239 case AGENT_ERROR_INVALID_CLASS_LOADER:
2240 return JDWP_ERROR(INVALID_CLASS_LOADER);
2241 case AGENT_ERROR_INVALID_ARRAY:
2242 return JDWP_ERROR(INVALID_ARRAY);
2243 case AGENT_ERROR_TRANSPORT_LOAD:
2244 return JDWP_ERROR(TRANSPORT_LOAD);
2245 case AGENT_ERROR_TRANSPORT_INIT:
2246 return JDWP_ERROR(TRANSPORT_INIT);
2247 case AGENT_ERROR_NATIVE_METHOD:
2248 return JDWP_ERROR(NATIVE_METHOD);
2249 case AGENT_ERROR_INVALID_COUNT:
2250 return JDWP_ERROR(INVALID_COUNT);
2251 case AGENT_ERROR_INVALID_FRAMEID:
2252 return JDWP_ERROR(INVALID_FRAMEID);
2253 case JVMTI_ERROR_INTERNAL:
2254 case JVMTI_ERROR_INVALID_ENVIRONMENT:
2255 case AGENT_ERROR_INTERNAL:
2256 case AGENT_ERROR_JVMTI_INTERNAL:
2257 case AGENT_ERROR_JDWP_INTERNAL:
2258 return JDWP_ERROR(INTERNAL);
2259 default:
2260 break;
2261 }
2262 return JDWP_ERROR(INTERNAL);
2263 }
2264
2265 jint
map2jdwpSuspendStatus(jint state)2266 map2jdwpSuspendStatus(jint state)
2267 {
2268 jint status = 0;
2269 if ( ( state & JVMTI_THREAD_STATE_SUSPENDED ) != 0 ) {
2270 status = JDWP_SUSPEND_STATUS(SUSPENDED);
2271 }
2272 return status;
2273 }
2274
2275 jdwpThreadStatus
map2jdwpThreadStatus(jint state)2276 map2jdwpThreadStatus(jint state)
2277 {
2278 jdwpThreadStatus status;
2279
2280 status = (jdwpThreadStatus)(-1);
2281
2282 if ( ! ( state & JVMTI_THREAD_STATE_ALIVE ) ) {
2283 if ( state & JVMTI_THREAD_STATE_TERMINATED ) {
2284 status = JDWP_THREAD_STATUS(ZOMBIE);
2285 } else {
2286 /* FIXUP? New JDWP #define for not started? */
2287 status = (jdwpThreadStatus)(-1);
2288 }
2289 } else {
2290 if ( state & JVMTI_THREAD_STATE_SLEEPING ) {
2291 status = JDWP_THREAD_STATUS(SLEEPING);
2292 } else if ( state & JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER ) {
2293 status = JDWP_THREAD_STATUS(MONITOR);
2294 } else if ( state & JVMTI_THREAD_STATE_WAITING ) {
2295 status = JDWP_THREAD_STATUS(WAIT);
2296 } else if ( state & JVMTI_THREAD_STATE_RUNNABLE ) {
2297 status = JDWP_THREAD_STATUS(RUNNING);
2298 }
2299 }
2300 return status;
2301 }
2302
2303 jint
map2jdwpClassStatus(jint classStatus)2304 map2jdwpClassStatus(jint classStatus)
2305 {
2306 jint status = 0;
2307 if ( ( classStatus & JVMTI_CLASS_STATUS_VERIFIED ) != 0 ) {
2308 status |= JDWP_CLASS_STATUS(VERIFIED);
2309 }
2310 if ( ( classStatus & JVMTI_CLASS_STATUS_PREPARED ) != 0 ) {
2311 status |= JDWP_CLASS_STATUS(PREPARED);
2312 }
2313 if ( ( classStatus & JVMTI_CLASS_STATUS_INITIALIZED ) != 0 ) {
2314 status |= JDWP_CLASS_STATUS(INITIALIZED);
2315 }
2316 if ( ( classStatus & JVMTI_CLASS_STATUS_ERROR ) != 0 ) {
2317 status |= JDWP_CLASS_STATUS(ERROR);
2318 }
2319 return status;
2320 }
2321
2322 void
log_debugee_location(const char * func,jthread thread,jmethodID method,jlocation location)2323 log_debugee_location(const char *func,
2324 jthread thread, jmethodID method, jlocation location)
2325 {
2326 int logging_locations = LOG_TEST(JDWP_LOG_LOC);
2327
2328 if ( logging_locations ) {
2329 char *method_name;
2330 char *class_sig;
2331 jvmtiError error;
2332 jvmtiThreadInfo info;
2333 jint state;
2334
2335 /* Get thread information */
2336 info.name = NULL;
2337 error = FUNC_PTR(gdata->jvmti,GetThreadInfo)
2338 (gdata->jvmti, thread, &info);
2339 if ( error != JVMTI_ERROR_NONE) {
2340 info.name = NULL;
2341 }
2342 error = FUNC_PTR(gdata->jvmti,GetThreadState)
2343 (gdata->jvmti, thread, &state);
2344 if ( error != JVMTI_ERROR_NONE) {
2345 state = 0;
2346 }
2347
2348 /* Get method if necessary */
2349 if ( method==NULL ) {
2350 error = FUNC_PTR(gdata->jvmti,GetFrameLocation)
2351 (gdata->jvmti, thread, 0, &method, &location);
2352 if ( error != JVMTI_ERROR_NONE ) {
2353 method = NULL;
2354 location = 0;
2355 }
2356 }
2357
2358 /* Get method name */
2359 method_name = NULL;
2360 if ( method != NULL ) {
2361 error = methodSignature(method, &method_name, NULL, NULL);
2362 if ( error != JVMTI_ERROR_NONE ) {
2363 method_name = NULL;
2364 }
2365 }
2366
2367 /* Get class signature */
2368 class_sig = NULL;
2369 if ( method != NULL ) {
2370 jclass clazz;
2371
2372 error = methodClass(method, &clazz);
2373 if ( error == JVMTI_ERROR_NONE ) {
2374 error = classSignature(clazz, &class_sig, NULL);
2375 if ( error != JVMTI_ERROR_NONE ) {
2376 class_sig = NULL;
2377 }
2378 }
2379 }
2380
2381 /* Issue log message */
2382 LOG_LOC(("%s: debugee: thread=%p(%s:0x%x),method=%p(%s@%d;%s)",
2383 func,
2384 thread, info.name==NULL ? "?" : info.name, state,
2385 method, method_name==NULL ? "?" : method_name,
2386 (int)location, class_sig==NULL ? "?" : class_sig));
2387
2388 /* Free memory */
2389 if ( class_sig != NULL ) {
2390 jvmtiDeallocate(class_sig);
2391 }
2392 if ( method_name != NULL ) {
2393 jvmtiDeallocate(method_name);
2394 }
2395 if ( info.name != NULL ) {
2396 jvmtiDeallocate(info.name);
2397 }
2398 }
2399 }
2400
2401 /* ********************************************************************* */
2402 /* JDK 6.0: Use of new Heap Iteration functions */
2403 /* ********************************************************************* */
2404
2405 /* ********************************************************************* */
2406 /* Instances */
2407
2408 /* Structure to hold class instances heap iteration data (arg user_data) */
2409 typedef struct ClassInstancesData {
2410 jint instCount;
2411 jint maxInstances;
2412 jlong objTag;
2413 jvmtiError error;
2414 } ClassInstancesData;
2415
2416 /* Callback for instance object tagging (heap_reference_callback). */
2417 static jint JNICALL
cbObjectTagInstance(jvmtiHeapReferenceKind reference_kind,const jvmtiHeapReferenceInfo * reference_info,jlong class_tag,jlong referrer_class_tag,jlong size,jlong * tag_ptr,jlong * referrer_tag_ptr,jint length,void * user_data)2418 cbObjectTagInstance(jvmtiHeapReferenceKind reference_kind,
2419 const jvmtiHeapReferenceInfo* reference_info, jlong class_tag,
2420 jlong referrer_class_tag, jlong size,
2421 jlong* tag_ptr, jlong* referrer_tag_ptr, jint length, void* user_data)
2422 {
2423 ClassInstancesData *data;
2424
2425 /* Check data structure */
2426 data = (ClassInstancesData*)user_data;
2427 if (data == NULL) {
2428 return JVMTI_VISIT_ABORT;
2429 }
2430
2431 /* If we have tagged enough objects, just abort */
2432 if ( data->maxInstances != 0 && data->instCount >= data->maxInstances ) {
2433 return JVMTI_VISIT_ABORT;
2434 }
2435
2436 /* If tagged already, just continue */
2437 if ( (*tag_ptr) != (jlong)0 ) {
2438 return JVMTI_VISIT_OBJECTS;
2439 }
2440
2441 /* Tag the object so we don't count it again, and so we can retrieve it */
2442 (*tag_ptr) = data->objTag;
2443 data->instCount++;
2444 return JVMTI_VISIT_OBJECTS;
2445 }
2446
2447 /* Get instances for one class */
2448 jvmtiError
classInstances(jclass klass,ObjectBatch * instances,int maxInstances)2449 classInstances(jclass klass, ObjectBatch *instances, int maxInstances)
2450 {
2451 ClassInstancesData data;
2452 jvmtiHeapCallbacks heap_callbacks;
2453 jvmtiError error;
2454 jvmtiEnv *jvmti;
2455
2456 /* Check interface assumptions */
2457
2458 if (klass == NULL) {
2459 return AGENT_ERROR_INVALID_OBJECT;
2460 }
2461
2462 if ( maxInstances < 0 || instances == NULL) {
2463 return AGENT_ERROR_ILLEGAL_ARGUMENT;
2464 }
2465
2466 /* Initialize return information */
2467 instances->count = 0;
2468 instances->objects = NULL;
2469
2470 /* Get jvmti environment to use */
2471 jvmti = getSpecialJvmti();
2472 if ( jvmti == NULL ) {
2473 return AGENT_ERROR_INTERNAL;
2474 }
2475
2476 /* Setup data to passed around the callbacks */
2477 data.instCount = 0;
2478 data.maxInstances = maxInstances;
2479 data.objTag = (jlong)1;
2480 data.error = JVMTI_ERROR_NONE;
2481
2482 /* Clear out callbacks structure */
2483 (void)memset(&heap_callbacks,0,sizeof(heap_callbacks));
2484
2485 /* Set the callbacks we want */
2486 heap_callbacks.heap_reference_callback = &cbObjectTagInstance;
2487
2488 /* Follow references, no initiating object, just this class, all objects */
2489 error = JVMTI_FUNC_PTR(jvmti,FollowReferences)
2490 (jvmti, 0, klass, NULL, &heap_callbacks, &data);
2491 if ( error == JVMTI_ERROR_NONE ) {
2492 error = data.error;
2493 }
2494
2495 /* Get all the instances now that they are tagged */
2496 if ( error == JVMTI_ERROR_NONE ) {
2497 error = JVMTI_FUNC_PTR(jvmti,GetObjectsWithTags)
2498 (jvmti, 1, &(data.objTag), &(instances->count),
2499 &(instances->objects), NULL);
2500 /* Verify we got the count we expected */
2501 if ( data.instCount != instances->count ) {
2502 error = AGENT_ERROR_INTERNAL;
2503 }
2504 }
2505
2506 /* Dispose of any special jvmti environment */
2507 (void)JVMTI_FUNC_PTR(jvmti,DisposeEnvironment)(jvmti);
2508 return error;
2509 }
2510
2511 /* ********************************************************************* */
2512 /* Instance counts. */
2513
2514 /* Macros to convert a class or instance tag to an index and back again */
2515 #define INDEX2CLASSTAG(i) ((jlong)((i)+1))
2516 #define CLASSTAG2INDEX(t) (((int)(t))-1)
2517 #define JLONG_ABS(x) (((x)<(jlong)0)?-(x):(x))
2518
2519 /* Structure to hold class count heap traversal data (arg user_data) */
2520 typedef struct ClassCountData {
2521 int classCount;
2522 jlong *counts;
2523 jlong negObjTag;
2524 jvmtiError error;
2525 } ClassCountData;
2526
2527 /* Two different cbObjectCounter's, one for FollowReferences, one for
2528 * IterateThroughHeap. Pick a card, any card.
2529 */
2530
2531 /* Callback for object count heap traversal (heap_reference_callback) */
2532 static jint JNICALL
cbObjectCounterFromRef(jvmtiHeapReferenceKind reference_kind,const jvmtiHeapReferenceInfo * reference_info,jlong class_tag,jlong referrer_class_tag,jlong size,jlong * tag_ptr,jlong * referrer_tag_ptr,jint length,void * user_data)2533 cbObjectCounterFromRef(jvmtiHeapReferenceKind reference_kind,
2534 const jvmtiHeapReferenceInfo* reference_info, jlong class_tag,
2535 jlong referrer_class_tag, jlong size,
2536 jlong* tag_ptr, jlong* referrer_tag_ptr, jint length, void* user_data)
2537 {
2538 ClassCountData *data;
2539 int index;
2540 jlong jindex;
2541 jlong tag;
2542
2543 /* Check data structure */
2544 data = (ClassCountData*)user_data;
2545 if (data == NULL) {
2546 return JVMTI_VISIT_ABORT;
2547 }
2548
2549 /* Classes with no class_tag should have been filtered out. */
2550 if ( class_tag == (jlong)0 ) {
2551 data->error = AGENT_ERROR_INTERNAL;
2552 return JVMTI_VISIT_ABORT;
2553 }
2554
2555 /* Class tag not one we really want (jclass not in supplied list) */
2556 if ( class_tag == data->negObjTag ) {
2557 return JVMTI_VISIT_OBJECTS;
2558 }
2559
2560 /* If object tag is negative, just continue, we counted it */
2561 tag = (*tag_ptr);
2562 if ( tag < (jlong)0 ) {
2563 return JVMTI_VISIT_OBJECTS;
2564 }
2565
2566 /* Tag the object with a negative value just so we don't count it again */
2567 if ( tag == (jlong)0 ) {
2568 /* This object had no tag value, so we give it the negObjTag value */
2569 (*tag_ptr) = data->negObjTag;
2570 } else {
2571 /* If this object had a positive tag value, it must be one of the
2572 * jclass objects we tagged. We need to preserve the value of
2573 * this tag for later objects that might have this as a class
2574 * tag, so we just make the existing tag value negative.
2575 */
2576 (*tag_ptr) = -tag;
2577 }
2578
2579 /* Absolute value of class tag is an index into the counts[] array */
2580 jindex = JLONG_ABS(class_tag);
2581 index = CLASSTAG2INDEX(jindex);
2582 if (index < 0 || index >= data->classCount) {
2583 data->error = AGENT_ERROR_ILLEGAL_ARGUMENT;
2584 return JVMTI_VISIT_ABORT;
2585 }
2586
2587 /* Bump instance count on this class */
2588 data->counts[index]++;
2589 return JVMTI_VISIT_OBJECTS;
2590 }
2591
2592 /* Callback for instance count heap traversal (heap_iteration_callback) */
2593 static jint JNICALL
cbObjectCounter(jlong class_tag,jlong size,jlong * tag_ptr,jint length,void * user_data)2594 cbObjectCounter(jlong class_tag, jlong size, jlong* tag_ptr, jint length,
2595 void* user_data)
2596 {
2597 ClassCountData *data;
2598 int index;
2599
2600 /* Check data structure */
2601 data = (ClassCountData*)user_data;
2602 if (data == NULL) {
2603 return JVMTI_VISIT_ABORT;
2604 }
2605
2606 /* Classes with no tag should be filtered out. */
2607 if ( class_tag == (jlong)0 ) {
2608 data->error = AGENT_ERROR_INTERNAL;
2609 return JVMTI_VISIT_ABORT;
2610 }
2611
2612 /* Class tag is actually an index into data arrays */
2613 index = CLASSTAG2INDEX(class_tag);
2614 if (index < 0 || index >= data->classCount) {
2615 data->error = AGENT_ERROR_ILLEGAL_ARGUMENT;
2616 return JVMTI_VISIT_ABORT;
2617 }
2618
2619 /* Bump instance count on this class */
2620 data->counts[index]++;
2621 return JVMTI_VISIT_OBJECTS;
2622 }
2623
2624 /* Get instance counts for a set of classes */
2625 jvmtiError
classInstanceCounts(jint classCount,jclass * classes,jlong * counts)2626 classInstanceCounts(jint classCount, jclass *classes, jlong *counts)
2627 {
2628 jvmtiHeapCallbacks heap_callbacks;
2629 ClassCountData data;
2630 jvmtiError error;
2631 jvmtiEnv *jvmti;
2632 int i;
2633
2634 /* Check interface assumptions */
2635 if ( classes == NULL || classCount <= 0 || counts == NULL ) {
2636 return AGENT_ERROR_ILLEGAL_ARGUMENT;
2637 }
2638
2639 /* Initialize return information */
2640 for ( i = 0 ; i < classCount ; i++ ) {
2641 counts[i] = (jlong)0;
2642 }
2643
2644 /* Get jvmti environment to use */
2645 jvmti = getSpecialJvmti();
2646 if ( jvmti == NULL ) {
2647 return AGENT_ERROR_INTERNAL;
2648 }
2649
2650 /* Setup class data structure */
2651 data.error = JVMTI_ERROR_NONE;
2652 data.classCount = classCount;
2653 data.counts = counts;
2654
2655 error = JVMTI_ERROR_NONE;
2656 /* Set tags on classes, use index in classes[] as the tag value. */
2657 error = JVMTI_ERROR_NONE;
2658 for ( i = 0 ; i < classCount ; i++ ) {
2659 if (classes[i] != NULL) {
2660 jlong tag;
2661
2662 tag = INDEX2CLASSTAG(i);
2663 error = JVMTI_FUNC_PTR(jvmti,SetTag) (jvmti, classes[i], tag);
2664 if ( error != JVMTI_ERROR_NONE ) {
2665 break;
2666 }
2667 }
2668 }
2669
2670 /* Traverse heap, two ways to do this for instance counts. */
2671 if ( error == JVMTI_ERROR_NONE ) {
2672
2673 /* Clear out callbacks structure */
2674 (void)memset(&heap_callbacks,0,sizeof(heap_callbacks));
2675
2676 /* Check debug flags to see how to do this. */
2677 if ( (gdata->debugflags & USE_ITERATE_THROUGH_HEAP) == 0 ) {
2678
2679 /* Using FollowReferences only gives us live objects, but we
2680 * need to tag the objects to avoid counting them twice since
2681 * the callback is per reference.
2682 * The jclass objects have been tagged with their index in the
2683 * supplied list, and that tag may flip to negative if it
2684 * is also an object of interest.
2685 * All other objects being counted that weren't in the
2686 * supplied classes list will have a negative classCount
2687 * tag value. So all objects counted will have negative tags.
2688 * If the absolute tag value is an index in the supplied
2689 * list, then it's one of the supplied classes.
2690 */
2691 data.negObjTag = -INDEX2CLASSTAG(classCount);
2692
2693 /* Setup callbacks, only using object reference callback */
2694 heap_callbacks.heap_reference_callback = &cbObjectCounterFromRef;
2695
2696 /* Follow references, no initiating object, tagged classes only */
2697 error = JVMTI_FUNC_PTR(jvmti,FollowReferences)
2698 (jvmti, JVMTI_HEAP_FILTER_CLASS_UNTAGGED,
2699 NULL, NULL, &heap_callbacks, &data);
2700
2701 } else {
2702
2703 /* Using IterateThroughHeap means that we will visit each object
2704 * once, so no special tag tricks here. Just simple counting.
2705 * However in this case the object might not be live, so we do
2706 * a GC beforehand to make sure we minimize this.
2707 */
2708
2709 /* FIXUP: Need some kind of trigger here to avoid excessive GC's? */
2710 error = JVMTI_FUNC_PTR(jvmti,ForceGarbageCollection)(jvmti);
2711 if ( error != JVMTI_ERROR_NONE ) {
2712
2713 /* Setup callbacks, just need object callback */
2714 heap_callbacks.heap_iteration_callback = &cbObjectCounter;
2715
2716 /* Iterate through entire heap, tagged classes only */
2717 error = JVMTI_FUNC_PTR(jvmti,IterateThroughHeap)
2718 (jvmti, JVMTI_HEAP_FILTER_CLASS_UNTAGGED,
2719 NULL, &heap_callbacks, &data);
2720
2721 }
2722 }
2723
2724 /* Use data error if needed */
2725 if ( error == JVMTI_ERROR_NONE ) {
2726 error = data.error;
2727 }
2728
2729 }
2730
2731 /* Dispose of any special jvmti environment */
2732 (void)JVMTI_FUNC_PTR(jvmti,DisposeEnvironment)(jvmti);
2733 return error;
2734 }
2735
2736 /* ********************************************************************* */
2737 /* Referrers */
2738
2739 /* Structure to hold object referrer heap traversal data (arg user_data) */
2740 typedef struct ReferrerData {
2741 int refCount;
2742 int maxObjects;
2743 jlong refTag;
2744 jlong objTag;
2745 jboolean selfRef;
2746 jvmtiError error;
2747 } ReferrerData;
2748
2749 /* Callback for referrers object tagging (heap_reference_callback). */
2750 static jint JNICALL
cbObjectTagReferrer(jvmtiHeapReferenceKind reference_kind,const jvmtiHeapReferenceInfo * reference_info,jlong class_tag,jlong referrer_class_tag,jlong size,jlong * tag_ptr,jlong * referrer_tag_ptr,jint length,void * user_data)2751 cbObjectTagReferrer(jvmtiHeapReferenceKind reference_kind,
2752 const jvmtiHeapReferenceInfo* reference_info, jlong class_tag,
2753 jlong referrer_class_tag, jlong size,
2754 jlong* tag_ptr, jlong* referrer_tag_ptr, jint length, void* user_data)
2755 {
2756 ReferrerData *data;
2757
2758 /* Check data structure */
2759 data = (ReferrerData*)user_data;
2760 if (data == NULL) {
2761 return JVMTI_VISIT_ABORT;
2762 }
2763
2764 /* If we have tagged enough objects, just abort */
2765 if ( data->maxObjects != 0 && data->refCount >= data->maxObjects ) {
2766 return JVMTI_VISIT_ABORT;
2767 }
2768
2769 /* If not of interest, just continue */
2770 if ( (*tag_ptr) != data->objTag ) {
2771 return JVMTI_VISIT_OBJECTS;
2772 }
2773
2774 /* Self reference that we haven't counted? */
2775 if ( tag_ptr == referrer_tag_ptr ) {
2776 if ( data->selfRef == JNI_FALSE ) {
2777 data->selfRef = JNI_TRUE;
2778 data->refCount++;
2779 }
2780 return JVMTI_VISIT_OBJECTS;
2781 }
2782
2783 /* If the referrer can be tagged, and hasn't been tagged, tag it */
2784 if ( referrer_tag_ptr != NULL ) {
2785 if ( (*referrer_tag_ptr) == (jlong)0 ) {
2786 *referrer_tag_ptr = data->refTag;
2787 data->refCount++;
2788 }
2789 }
2790 return JVMTI_VISIT_OBJECTS;
2791 }
2792
2793 /* Heap traversal to find referrers of an object */
2794 jvmtiError
objectReferrers(jobject obj,ObjectBatch * referrers,int maxObjects)2795 objectReferrers(jobject obj, ObjectBatch *referrers, int maxObjects)
2796 {
2797 jvmtiHeapCallbacks heap_callbacks;
2798 ReferrerData data;
2799 jvmtiError error;
2800 jvmtiEnv *jvmti;
2801
2802 /* Check interface assumptions */
2803 if (obj == NULL) {
2804 return AGENT_ERROR_INVALID_OBJECT;
2805 }
2806 if (referrers == NULL || maxObjects < 0 ) {
2807 return AGENT_ERROR_ILLEGAL_ARGUMENT;
2808 }
2809
2810 /* Initialize return information */
2811 referrers->count = 0;
2812 referrers->objects = NULL;
2813
2814 /* Get jvmti environment to use */
2815 jvmti = getSpecialJvmti();
2816 if ( jvmti == NULL ) {
2817 return AGENT_ERROR_INTERNAL;
2818 }
2819
2820 /* Fill in the data structure passed around the callbacks */
2821 data.refCount = 0;
2822 data.maxObjects = maxObjects;
2823 data.objTag = (jlong)1;
2824 data.refTag = (jlong)2;
2825 data.selfRef = JNI_FALSE;
2826 data.error = JVMTI_ERROR_NONE;
2827
2828 /* Tag the object of interest */
2829 error = JVMTI_FUNC_PTR(jvmti,SetTag) (jvmti, obj, data.objTag);
2830
2831 /* No need to go any further if we can't tag the object */
2832 if ( error == JVMTI_ERROR_NONE ) {
2833
2834 /* Clear out callbacks structure */
2835 (void)memset(&heap_callbacks,0,sizeof(heap_callbacks));
2836
2837 /* Setup callbacks we want */
2838 heap_callbacks.heap_reference_callback = &cbObjectTagReferrer;
2839
2840 /* Follow references, no initiating object, all classes, 1 tagged objs */
2841 error = JVMTI_FUNC_PTR(jvmti,FollowReferences)
2842 (jvmti, JVMTI_HEAP_FILTER_UNTAGGED,
2843 NULL, NULL, &heap_callbacks, &data);
2844
2845 /* Use data error if needed */
2846 if ( error == JVMTI_ERROR_NONE ) {
2847 error = data.error;
2848 }
2849
2850 }
2851
2852 /* Watch out for self-reference */
2853 if ( error == JVMTI_ERROR_NONE && data.selfRef == JNI_TRUE ) {
2854 /* Tag itself as a referer */
2855 error = JVMTI_FUNC_PTR(jvmti,SetTag) (jvmti, obj, data.refTag);
2856 }
2857
2858 /* Get the jobjects for the tagged referrer objects. */
2859 if ( error == JVMTI_ERROR_NONE ) {
2860 error = JVMTI_FUNC_PTR(jvmti,GetObjectsWithTags)
2861 (jvmti, 1, &(data.refTag), &(referrers->count),
2862 &(referrers->objects), NULL);
2863 /* Verify we got the count we expected */
2864 if ( data.refCount != referrers->count ) {
2865 error = AGENT_ERROR_INTERNAL;
2866 }
2867 }
2868
2869 /* Dispose of any special jvmti environment */
2870 (void)JVMTI_FUNC_PTR(jvmti,DisposeEnvironment)(jvmti);
2871 return error;
2872 }
2873