1 /*
2 * Copyright (c) 1998, 2024, 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 "utf_util.h"
30 #include "transport.h"
31 #include "eventHandler.h"
32 #include "threadControl.h"
33 #include "outStream.h"
34 #include "inStream.h"
35 #include "invoker.h"
36 #include "signature.h"
37
38
39 /* Global data area */
40 BackendGlobalData *gdata = NULL;
41
42 /* Forward declarations */
43 static jboolean isInterface(jclass clazz);
44 static jboolean isArrayClass(jclass clazz);
45 static char * getPropertyUTF8(JNIEnv *env, char *propertyName);
46
47 /* Save an object reference for use later (create a NewGlobalRef) */
48 void
49 saveGlobalRef(JNIEnv *env, jobject obj, jobject *pobj)
50 {
51 jobject newobj;
52
53 if ( pobj == NULL ) {
54 EXIT_ERROR(AGENT_ERROR_ILLEGAL_ARGUMENT,"saveGlobalRef pobj");
55 }
56 if ( *pobj != NULL ) {
57 EXIT_ERROR(AGENT_ERROR_ILLEGAL_ARGUMENT,"saveGlobalRef *pobj");
58 }
59 if ( env == NULL ) {
60 EXIT_ERROR(AGENT_ERROR_ILLEGAL_ARGUMENT,"saveGlobalRef env");
61 }
62 if ( obj == NULL ) {
63 EXIT_ERROR(AGENT_ERROR_ILLEGAL_ARGUMENT,"saveGlobalRef obj");
64 }
65 newobj = JNI_FUNC_PTR(env,NewGlobalRef)(env, obj);
66 if ( newobj == NULL ) {
67 EXIT_ERROR(AGENT_ERROR_NULL_POINTER,"NewGlobalRef");
68 }
69 *pobj = newobj;
70 }
71
72 /* Toss a previously saved object reference */
73 void
74 tossGlobalRef(JNIEnv *env, jobject *pobj)
75 {
76 jobject obj;
77
78 if ( pobj == NULL ) {
79 EXIT_ERROR(AGENT_ERROR_ILLEGAL_ARGUMENT,"tossGlobalRef pobj");
80 }
81 obj = *pobj;
82 if ( env == NULL ) {
83 EXIT_ERROR(AGENT_ERROR_ILLEGAL_ARGUMENT,"tossGlobalRef env");
84 }
85 if ( obj == NULL ) {
86 EXIT_ERROR(AGENT_ERROR_NULL_POINTER,"tossGlobalRef obj");
87 }
88 JNI_FUNC_PTR(env,DeleteGlobalRef)(env, obj);
89 *pobj = NULL;
90 }
91
92 jclass
93 findClass(JNIEnv *env, const char * name)
94 {
95 jclass x;
96
97 if ( env == NULL ) {
98 EXIT_ERROR(AGENT_ERROR_ILLEGAL_ARGUMENT,"findClass env");
99 }
100 if ( name == NULL || name[0] == 0 ) {
101 EXIT_ERROR(AGENT_ERROR_ILLEGAL_ARGUMENT,"findClass name");
102 }
103 x = JNI_FUNC_PTR(env,FindClass)(env, name);
104 if (x == NULL) {
105 ERROR_MESSAGE(("JDWP Can't find class %s", name));
106 EXIT_ERROR(AGENT_ERROR_NULL_POINTER,NULL);
107 }
108 if ( JNI_FUNC_PTR(env,ExceptionOccurred)(env) ) {
109 ERROR_MESSAGE(("JDWP Exception occurred finding class %s", name));
110 EXIT_ERROR(AGENT_ERROR_NULL_POINTER,NULL);
111 }
112 return x;
113 }
114
115 jmethodID
116 getMethod(JNIEnv *env, jclass clazz, const char * name, const char *signature)
117 {
118 jmethodID method;
119
120 if ( env == NULL ) {
121 EXIT_ERROR(AGENT_ERROR_ILLEGAL_ARGUMENT,"getMethod env");
122 }
123 if ( clazz == NULL ) {
124 EXIT_ERROR(AGENT_ERROR_ILLEGAL_ARGUMENT,"getMethod clazz");
125 }
126 if ( name == NULL || name[0] == 0 ) {
127 EXIT_ERROR(AGENT_ERROR_ILLEGAL_ARGUMENT,"getMethod name");
128 }
129 if ( signature == NULL || signature[0] == 0 ) {
130 EXIT_ERROR(AGENT_ERROR_ILLEGAL_ARGUMENT,"getMethod signature");
131 }
132 method = JNI_FUNC_PTR(env,GetMethodID)(env, clazz, name, signature);
133 if (method == NULL) {
134 ERROR_MESSAGE(("JDWP Can't find method %s with signature %s",
135 name, signature));
136 EXIT_ERROR(AGENT_ERROR_NULL_POINTER,NULL);
137 }
138 if ( JNI_FUNC_PTR(env,ExceptionOccurred)(env) ) {
139 ERROR_MESSAGE(("JDWP Exception occurred finding method %s with signature %s",
140 name, signature));
141 EXIT_ERROR(AGENT_ERROR_NULL_POINTER,NULL);
142 }
143 return method;
144 }
145
146 static jmethodID
147 getStaticMethod(JNIEnv *env, jclass clazz, const char * name, const char *signature)
148 {
149 jmethodID method;
150
151 if ( env == NULL ) {
152 EXIT_ERROR(AGENT_ERROR_ILLEGAL_ARGUMENT,"getStaticMethod env");
153 }
154 if ( clazz == NULL ) {
155 EXIT_ERROR(AGENT_ERROR_ILLEGAL_ARGUMENT,"getStaticMethod clazz");
156 }
157 if ( name == NULL || name[0] == 0 ) {
158 EXIT_ERROR(AGENT_ERROR_ILLEGAL_ARGUMENT,"getStaticMethod name");
159 }
160 if ( signature == NULL || signature[0] == 0 ) {
161 EXIT_ERROR(AGENT_ERROR_ILLEGAL_ARGUMENT,"getStaticMethod signature");
162 }
163 method = JNI_FUNC_PTR(env,GetStaticMethodID)(env, clazz, name, signature);
164 if (method == NULL) {
165 ERROR_MESSAGE(("JDWP Can't find method %s with signature %s",
166 name, signature));
167 EXIT_ERROR(AGENT_ERROR_NULL_POINTER,NULL);
168 }
169 if ( JNI_FUNC_PTR(env,ExceptionOccurred)(env) ) {
170 ERROR_MESSAGE(("JDWP Exception occurred finding method %s with signature %s",
171 name, signature));
172 EXIT_ERROR(AGENT_ERROR_NULL_POINTER,NULL);
173 }
174 return method;
175 }
176
177
178
179 void
180 util_initialize(JNIEnv *env)
181 {
182 WITH_LOCAL_REFS(env, 6) {
183
184 jvmtiError error;
185 jclass localClassClass;
186 jclass localThreadClass;
187 jclass localThreadGroupClass;
188 jclass localClassLoaderClass;
189 jclass localStringClass;
190 jclass localSystemClass;
191 jclass localPropertiesClass;
192 jclass localVMSupportClass;
193 jobject localAgentProperties;
194 jmethodID getAgentProperties;
195 jint groupCount;
196 jthreadGroup *groups;
197 jthreadGroup localSystemThreadGroup;
198
199 /* Find some standard classes */
200
201 localClassClass = findClass(env,"java/lang/Class");
202 localThreadClass = findClass(env,"java/lang/Thread");
203 localThreadGroupClass = findClass(env,"java/lang/ThreadGroup");
204 localClassLoaderClass = findClass(env,"java/lang/ClassLoader");
205 localStringClass = findClass(env,"java/lang/String");
206 localSystemClass = findClass(env,"java/lang/System");
207 localPropertiesClass = findClass(env,"java/util/Properties");
208
209 /* Save references */
210
211 saveGlobalRef(env, localClassClass, &(gdata->classClass));
212 saveGlobalRef(env, localThreadClass, &(gdata->threadClass));
213 saveGlobalRef(env, localThreadGroupClass, &(gdata->threadGroupClass));
214 saveGlobalRef(env, localClassLoaderClass, &(gdata->classLoaderClass));
215 saveGlobalRef(env, localStringClass, &(gdata->stringClass));
216 saveGlobalRef(env, localSystemClass, &(gdata->systemClass));
217
218 /* Find some standard methods */
219
220 gdata->threadConstructor =
221 getMethod(env, gdata->threadClass,
222 "<init>", "(Ljava/lang/ThreadGroup;Ljava/lang/String;)V");
223 gdata->threadSetDaemon =
224 getMethod(env, gdata->threadClass, "setDaemon", "(Z)V");
225 gdata->systemGetProperty =
226 getStaticMethod(env, gdata->systemClass,
227 "getProperty", "(Ljava/lang/String;)Ljava/lang/String;");
228 gdata->setProperty =
229 getMethod(env, localPropertiesClass,
230 "setProperty", "(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/Object;");
231
232 /* Find the system thread group */
233
234 groups = NULL;
235 groupCount = 0;
236 error = JVMTI_FUNC_PTR(gdata->jvmti,GetTopThreadGroups)
237 (gdata->jvmti, &groupCount, &groups);
238 if (error != JVMTI_ERROR_NONE ) {
239 EXIT_ERROR(error, "Can't get system thread group");
240 }
241 if ( groupCount == 0 ) {
242 EXIT_ERROR(AGENT_ERROR_NULL_POINTER, "Can't get system thread group");
243 }
244 localSystemThreadGroup = groups[0];
245 saveGlobalRef(env, localSystemThreadGroup, &(gdata->systemThreadGroup));
246 jvmtiDeallocate(groups);
247
248 /* Get some basic Java property values we will need at some point */
249 gdata->property_java_version
250 = getPropertyUTF8(env, "java.version");
251 gdata->property_java_vm_name
252 = getPropertyUTF8(env, "java.vm.name");
253 gdata->property_java_vm_info
254 = getPropertyUTF8(env, "java.vm.info");
255 gdata->property_java_class_path
256 = getPropertyUTF8(env, "java.class.path");
257 gdata->property_sun_boot_library_path
258 = getPropertyUTF8(env, "sun.boot.library.path");
259 gdata->property_path_separator
260 = getPropertyUTF8(env, "path.separator");
261 gdata->property_user_dir
262 = getPropertyUTF8(env, "user.dir");
263
264 /* Get agent properties: invoke VMSupport.getAgentProperties */
265 localVMSupportClass = JNI_FUNC_PTR(env,FindClass)
266 (env, "jdk/internal/vm/VMSupport");
267 if (localVMSupportClass == NULL) {
268 gdata->agent_properties = NULL;
269 if (JNI_FUNC_PTR(env,ExceptionOccurred)(env)) {
270 JNI_FUNC_PTR(env,ExceptionClear)(env);
271 }
272 } else {
273 getAgentProperties =
274 getStaticMethod(env, localVMSupportClass,
275 "getAgentProperties", "()Ljava/util/Properties;");
276 localAgentProperties =
277 JNI_FUNC_PTR(env,CallStaticObjectMethod)
278 (env, localVMSupportClass, getAgentProperties);
279 if (JNI_FUNC_PTR(env,ExceptionOccurred)(env)) {
280 JNI_FUNC_PTR(env,ExceptionClear)(env);
281 EXIT_ERROR(AGENT_ERROR_INTERNAL,
282 "Exception occurred calling VMSupport.getAgentProperties");
283 }
284 saveGlobalRef(env, localAgentProperties, &(gdata->agent_properties));
285 }
286
287 } END_WITH_LOCAL_REFS(env);
288
289 }
290
291 void
292 util_reset(void)
293 {
294 }
295
296 jboolean
297 isObjectTag(jbyte tag) {
298 return (tag == JDWP_TAG(OBJECT)) ||
299 (tag == JDWP_TAG(STRING)) ||
300 (tag == JDWP_TAG(THREAD)) ||
301 (tag == JDWP_TAG(THREAD_GROUP)) ||
302 (tag == JDWP_TAG(CLASS_LOADER)) ||
303 (tag == JDWP_TAG(CLASS_OBJECT)) ||
304 (tag == JDWP_TAG(ARRAY));
305 }
306
307 jbyte
308 specificTypeKey(JNIEnv *env, jobject object)
309 {
310 if (object == NULL) {
311 return JDWP_TAG(OBJECT);
312 } else if (JNI_FUNC_PTR(env,IsInstanceOf)(env, object, gdata->stringClass)) {
313 return JDWP_TAG(STRING);
314 } else if (JNI_FUNC_PTR(env,IsInstanceOf)(env, object, gdata->threadClass)) {
315 return JDWP_TAG(THREAD);
316 } else if (JNI_FUNC_PTR(env,IsInstanceOf)(env, object, gdata->threadGroupClass)) {
317 return JDWP_TAG(THREAD_GROUP);
318 } else if (JNI_FUNC_PTR(env,IsInstanceOf)(env, object, gdata->classLoaderClass)) {
319 return JDWP_TAG(CLASS_LOADER);
320 } else if (JNI_FUNC_PTR(env,IsInstanceOf)(env, object, gdata->classClass)) {
321 return JDWP_TAG(CLASS_OBJECT);
322 } else {
323 jboolean classIsArray;
324
325 WITH_LOCAL_REFS(env, 1) {
326 jclass clazz;
327 clazz = JNI_FUNC_PTR(env,GetObjectClass)(env, object);
328 classIsArray = isArrayClass(clazz);
329 } END_WITH_LOCAL_REFS(env);
330
331 return (classIsArray ? JDWP_TAG(ARRAY) : JDWP_TAG(OBJECT));
332 }
333 }
334
335 static void
336 writeFieldValue(JNIEnv *env, PacketOutputStream *out, jobject object,
337 jfieldID field)
338 {
339 jclass clazz;
340 char *signature = NULL;
341 jvmtiError error;
342 jbyte typeKey;
343
344 clazz = JNI_FUNC_PTR(env,GetObjectClass)(env, object);
345 error = fieldSignature(clazz, field, NULL, &signature, NULL);
346 if (error != JVMTI_ERROR_NONE) {
347 outStream_setError(out, map2jdwpError(error));
348 return;
349 }
350 typeKey = jdwpTag(signature);
351 jvmtiDeallocate(signature);
352
353 if (isReferenceTag(typeKey)) {
354
355 jobject value = JNI_FUNC_PTR(env,GetObjectField)(env, object, field);
356 (void)outStream_writeByte(out, specificTypeKey(env, value));
357 (void)outStream_writeObjectRef(env, out, value);
358 return;
359
360 }
361
362 /*
363 * For primitive types, the type key is bounced back as is.
364 */
365 (void)outStream_writeByte(out, typeKey);
366
367 switch (typeKey) {
368 case JDWP_TAG(BYTE):
369 (void)outStream_writeByte(out,
370 JNI_FUNC_PTR(env,GetByteField)(env, object, field));
371 break;
372
373 case JDWP_TAG(CHAR):
374 (void)outStream_writeChar(out,
375 JNI_FUNC_PTR(env,GetCharField)(env, object, field));
376 break;
377
378 case JDWP_TAG(FLOAT):
379 (void)outStream_writeFloat(out,
380 JNI_FUNC_PTR(env,GetFloatField)(env, object, field));
381 break;
382
383 case JDWP_TAG(DOUBLE):
384 (void)outStream_writeDouble(out,
385 JNI_FUNC_PTR(env,GetDoubleField)(env, object, field));
386 break;
387
388 case JDWP_TAG(INT):
389 (void)outStream_writeInt(out,
390 JNI_FUNC_PTR(env,GetIntField)(env, object, field));
391 break;
392
393 case JDWP_TAG(LONG):
394 (void)outStream_writeLong(out,
395 JNI_FUNC_PTR(env,GetLongField)(env, object, field));
396 break;
397
398 case JDWP_TAG(SHORT):
399 (void)outStream_writeShort(out,
400 JNI_FUNC_PTR(env,GetShortField)(env, object, field));
401 break;
402
403 case JDWP_TAG(BOOLEAN):
404 (void)outStream_writeBoolean(out,
405 JNI_FUNC_PTR(env,GetBooleanField)(env, object, field));
406 break;
407 }
408 }
409
410 static void
411 writeStaticFieldValue(JNIEnv *env, PacketOutputStream *out, jclass clazz,
412 jfieldID field)
413 {
414 jvmtiError error;
415 char *signature = NULL;
416 jbyte typeKey;
417
418 error = fieldSignature(clazz, field, NULL, &signature, NULL);
419 if (error != JVMTI_ERROR_NONE) {
420 outStream_setError(out, map2jdwpError(error));
421 return;
422 }
423 typeKey = jdwpTag(signature);
424 jvmtiDeallocate(signature);
425
426
427 if (isReferenceTag(typeKey)) {
428
429 jobject value = JNI_FUNC_PTR(env,GetStaticObjectField)(env, clazz, field);
430 (void)outStream_writeByte(out, specificTypeKey(env, value));
431 (void)outStream_writeObjectRef(env, out, value);
432
433 return;
434 }
435
436 /*
437 * For primitive types, the type key is bounced back as is.
438 */
439 (void)outStream_writeByte(out, typeKey);
440 switch (typeKey) {
441 case JDWP_TAG(BYTE):
442 (void)outStream_writeByte(out,
443 JNI_FUNC_PTR(env,GetStaticByteField)(env, clazz, field));
444 break;
445
446 case JDWP_TAG(CHAR):
447 (void)outStream_writeChar(out,
448 JNI_FUNC_PTR(env,GetStaticCharField)(env, clazz, field));
449 break;
450
451 case JDWP_TAG(FLOAT):
452 (void)outStream_writeFloat(out,
453 JNI_FUNC_PTR(env,GetStaticFloatField)(env, clazz, field));
454 break;
455
456 case JDWP_TAG(DOUBLE):
457 (void)outStream_writeDouble(out,
458 JNI_FUNC_PTR(env,GetStaticDoubleField)(env, clazz, field));
459 break;
460
461 case JDWP_TAG(INT):
462 (void)outStream_writeInt(out,
463 JNI_FUNC_PTR(env,GetStaticIntField)(env, clazz, field));
464 break;
465
466 case JDWP_TAG(LONG):
467 (void)outStream_writeLong(out,
468 JNI_FUNC_PTR(env,GetStaticLongField)(env, clazz, field));
469 break;
470
471 case JDWP_TAG(SHORT):
472 (void)outStream_writeShort(out,
473 JNI_FUNC_PTR(env,GetStaticShortField)(env, clazz, field));
474 break;
475
476 case JDWP_TAG(BOOLEAN):
477 (void)outStream_writeBoolean(out,
478 JNI_FUNC_PTR(env,GetStaticBooleanField)(env, clazz, field));
479 break;
480 }
481 }
482
483 void
484 sharedGetFieldValues(PacketInputStream *in, PacketOutputStream *out,
485 jboolean isStatic)
486 {
487 JNIEnv *env = getEnv();
488 jint length;
489 jobject object;
490 jclass clazz;
491
492 object = NULL;
493 clazz = NULL;
494
495 if (isStatic) {
496 clazz = inStream_readClassRef(env, in);
497 } else {
498 object = inStream_readObjectRef(env, in);
499 }
500
501 length = inStream_readInt(in);
502 if (inStream_error(in)) {
503 return;
504 }
505
506 WITH_LOCAL_REFS(env, length + 1) { /* +1 for class with instance fields */
507
508 int i;
509
510 (void)outStream_writeInt(out, length);
511 for (i = 0; (i < length) && !outStream_error(out); i++) {
512 jfieldID field = inStream_readFieldID(in);
513
514 if (isStatic) {
515 writeStaticFieldValue(env, out, clazz, field);
516 } else {
517 writeFieldValue(env, out, object, field);
518 }
519 }
520
521 } END_WITH_LOCAL_REFS(env);
522 }
523
524 jboolean
525 sharedInvoke(PacketInputStream *in, PacketOutputStream *out)
526 {
527 jvalue *arguments = NULL;
528 jint options;
529 jvmtiError error;
530 jbyte invokeType;
531 jclass clazz;
532 jmethodID method;
533 jint argumentCount;
534 jobject instance;
535 jthread thread;
536 JNIEnv *env;
537
538 /*
539 * Instance methods start with the instance, thread and class,
540 * and statics and constructors start with the class and then the
541 * thread.
542 */
543 env = getEnv();
544 if (inStream_command(in) == JDWP_COMMAND(ObjectReference, InvokeMethod)) {
545 instance = inStream_readObjectRef(env, in);
546 thread = inStream_readThreadRef(env, in);
547 clazz = inStream_readClassRef(env, in);
548 } else { /* static method or constructor */
549 instance = NULL;
550 clazz = inStream_readClassRef(env, in);
551 thread = inStream_readThreadRef(env, in);
552 }
553
554 /*
555 * ... and the rest of the packet is identical for all commands
556 */
557 method = inStream_readMethodID(in);
558 argumentCount = inStream_readInt(in);
559 if (inStream_error(in)) {
560 return JNI_TRUE;
561 }
562
563 /* If count == 0, don't try and allocate 0 bytes, you'll get NULL */
564 if ( argumentCount > 0 ) {
565 int i;
566 /*LINTED*/
567 arguments = jvmtiAllocate(argumentCount * (jint)sizeof(*arguments));
568 if (arguments == NULL) {
569 outStream_setError(out, JDWP_ERROR(OUT_OF_MEMORY));
570 return JNI_TRUE;
571 }
572 for (i = 0; (i < argumentCount) && !inStream_error(in); i++) {
573 arguments[i] = inStream_readValue(in);
574 }
575 if (inStream_error(in)) {
576 return JNI_TRUE;
577 }
578 }
579
580 options = inStream_readInt(in);
581 if (inStream_error(in)) {
582 if ( arguments != NULL ) {
583 jvmtiDeallocate(arguments);
584 }
585 return JNI_TRUE;
586 }
587
588 if (inStream_command(in) == JDWP_COMMAND(ClassType, NewInstance)) {
589 invokeType = INVOKE_CONSTRUCTOR;
590 } else if (inStream_command(in) == JDWP_COMMAND(ClassType, InvokeMethod)) {
591 invokeType = INVOKE_STATIC;
592 } else if (inStream_command(in) == JDWP_COMMAND(InterfaceType, InvokeMethod)) {
593 invokeType = INVOKE_STATIC;
594 } else if (inStream_command(in) == JDWP_COMMAND(ObjectReference, InvokeMethod)) {
595 invokeType = INVOKE_INSTANCE;
596 } else {
597 outStream_setError(out, JDWP_ERROR(INTERNAL));
598 if ( arguments != NULL ) {
599 jvmtiDeallocate(arguments);
600 }
601 return JNI_TRUE;
602 }
603
604 /*
605 * Request the invoke. If there are no errors in the request,
606 * the interrupting thread will actually do the invoke and a
607 * reply will be generated subsequently, so we don't reply here.
608 */
609 error = invoker_requestInvoke(invokeType, (jbyte)options, inStream_id(in),
610 thread, clazz, method,
611 instance, arguments, argumentCount);
612 if (error != JVMTI_ERROR_NONE) {
613 outStream_setError(out, map2jdwpError(error));
614 if ( arguments != NULL ) {
615 jvmtiDeallocate(arguments);
616 }
617 return JNI_TRUE;
618 }
619
620 return JNI_FALSE; /* Don't reply */
621 }
622
623 jint
624 uniqueID(void)
625 {
626 static jint currentID = 0;
627 return currentID++;
628 }
629
630 int
631 filterDebugThreads(jthread *threads, int count)
632 {
633 int i;
634 int current;
635
636 /* Squish out all of the debugger-spawned threads */
637 for (i = 0, current = 0; i < count; i++) {
638 jthread thread = threads[i];
639 if (!threadControl_isDebugThread(thread)) {
640 if (i > current) {
641 threads[current] = thread;
642 }
643 current++;
644 }
645 }
646 return current;
647 }
648
649 jbyte
650 referenceTypeTag(jclass clazz)
651 {
652 jbyte tag;
653
654 if (isInterface(clazz)) {
655 tag = JDWP_TYPE_TAG(INTERFACE);
656 } else if (isArrayClass(clazz)) {
657 tag = JDWP_TYPE_TAG(ARRAY);
658 } else {
659 tag = JDWP_TYPE_TAG(CLASS);
660 }
661
662 return tag;
663 }
664
665 /**
666 * Get field modifiers
667 */
668 jvmtiError
669 fieldModifiers(jclass clazz, jfieldID field, jint *pmodifiers)
670 {
671 jvmtiError error;
672
673 *pmodifiers = 0;
674 error = JVMTI_FUNC_PTR(gdata->jvmti,GetFieldModifiers)
675 (gdata->jvmti, clazz, field, pmodifiers);
676 return error;
677 }
678
679 /**
680 * Get method modifiers
681 */
682 jvmtiError
683 methodModifiers(jmethodID method, jint *pmodifiers)
684 {
685 jvmtiError error;
686
687 *pmodifiers = 0;
688 error = JVMTI_FUNC_PTR(gdata->jvmti,GetMethodModifiers)
689 (gdata->jvmti, method, pmodifiers);
690 return error;
691 }
692
693 /* Returns a local ref to the declaring class for a method, or NULL. */
694 jvmtiError
695 methodClass(jmethodID method, jclass *pclazz)
696 {
697 jvmtiError error;
698
699 *pclazz = NULL;
700 error = JVMTI_FUNC_PTR(gdata->jvmti,GetMethodDeclaringClass)
701 (gdata->jvmti, method, pclazz);
702 return error;
703 }
704
705 /* Returns the start and end locations of the specified method. */
706 jvmtiError
707 methodLocation(jmethodID method, jlocation *ploc1, jlocation *ploc2)
708 {
709 jvmtiError error;
710
711 error = JVMTI_FUNC_PTR(gdata->jvmti,GetMethodLocation)
712 (gdata->jvmti, method, ploc1, ploc2);
713 return error;
714 }
715
716 /**
717 * Get method signature
718 */
719 jvmtiError
720 methodSignature(jmethodID method,
721 char **pname, char **psignature, char **pgeneric_signature)
722 {
723 jvmtiError error;
724 char *name = NULL;
725 char *signature = NULL;
726 char *generic_signature = NULL;
727
728 error = JVMTI_FUNC_PTR(gdata->jvmti,GetMethodName)
729 (gdata->jvmti, method, &name, &signature, &generic_signature);
730
731 if ( pname != NULL ) {
732 *pname = name;
733 } else if ( name != NULL ) {
734 jvmtiDeallocate(name);
735 }
736 if ( psignature != NULL ) {
737 *psignature = signature;
738 } else if ( signature != NULL ) {
739 jvmtiDeallocate(signature);
740 }
741 if ( pgeneric_signature != NULL ) {
742 *pgeneric_signature = generic_signature;
743 } else if ( generic_signature != NULL ) {
744 jvmtiDeallocate(generic_signature);
745 }
746 return error;
747 }
748
749 /*
750 * Get the return type key of the method
751 * V or B C D F I J S Z L [
752 */
753 jvmtiError
754 methodReturnType(jmethodID method, char *typeKey)
755 {
756 char *signature;
757 jvmtiError error;
758
759 signature = NULL;
760 error = methodSignature(method, NULL, &signature, NULL);
761 if (error == JVMTI_ERROR_NONE) {
762 if (signature == NULL ) {
763 error = AGENT_ERROR_INVALID_TAG;
764 } else {
765 char * xx;
766
767 xx = strchr(signature, ')');
768 if (xx == NULL || *(xx + 1) == 0) {
769 error = AGENT_ERROR_INVALID_TAG;
770 } else {
771 *typeKey = *(xx + 1);
772 }
773 jvmtiDeallocate(signature);
774 }
775 }
776 return error;
777 }
778
779
780 /**
781 * Return class loader for a class (must be inside a WITH_LOCAL_REFS)
782 */
783 jvmtiError
784 classLoader(jclass clazz, jobject *pclazz)
785 {
786 jvmtiError error;
787
788 *pclazz = NULL;
789 error = JVMTI_FUNC_PTR(gdata->jvmti,GetClassLoader)
790 (gdata->jvmti, clazz, pclazz);
791 return error;
792 }
793
794 /**
795 * Get field signature
796 */
797 jvmtiError
798 fieldSignature(jclass clazz, jfieldID field,
799 char **pname, char **psignature, char **pgeneric_signature)
800 {
801 jvmtiError error;
802 char *name = NULL;
803 char *signature = NULL;
804 char *generic_signature = NULL;
805
806 error = JVMTI_FUNC_PTR(gdata->jvmti,GetFieldName)
807 (gdata->jvmti, clazz, field, &name, &signature, &generic_signature);
808
809 if ( pname != NULL ) {
810 *pname = name;
811 } else if ( name != NULL ) {
812 jvmtiDeallocate(name);
813 }
814 if ( psignature != NULL ) {
815 *psignature = signature;
816 } else if ( signature != NULL ) {
817 jvmtiDeallocate(signature);
818 }
819 if ( pgeneric_signature != NULL ) {
820 *pgeneric_signature = generic_signature;
821 } else if ( generic_signature != NULL ) {
822 jvmtiDeallocate(generic_signature);
823 }
824 return error;
825 }
826
827 JNIEnv *
828 getEnv(void)
829 {
830 JNIEnv *env = NULL;
831 jint rc;
832
833 rc = FUNC_PTR(gdata->jvm,GetEnv)
834 (gdata->jvm, (void **)&env, JNI_VERSION_1_2);
835 if (rc != JNI_OK) {
836 ERROR_MESSAGE(("JDWP Unable to get JNI 1.2 environment, jvm->GetEnv() return code = %d",
837 rc));
838 EXIT_ERROR(AGENT_ERROR_NO_JNI_ENV,NULL);
839 }
840 return env;
841 }
842
843 jvmtiError
844 spawnNewThread(jvmtiStartFunction func, void *arg, char *name)
845 {
846 JNIEnv *env = getEnv();
847 jvmtiError error;
848
849 LOG_MISC(("Spawning new thread: %s", name));
850
851 WITH_LOCAL_REFS(env, 3) {
852
853 jthread thread;
854 jstring nameString;
855
856 nameString = JNI_FUNC_PTR(env,NewStringUTF)(env, name);
857 if (JNI_FUNC_PTR(env,ExceptionOccurred)(env)) {
858 JNI_FUNC_PTR(env,ExceptionClear)(env);
859 error = AGENT_ERROR_OUT_OF_MEMORY;
860 goto err;
861 }
862
863 thread = JNI_FUNC_PTR(env,NewObject)
864 (env, gdata->threadClass, gdata->threadConstructor,
865 gdata->systemThreadGroup, nameString);
866 if (JNI_FUNC_PTR(env,ExceptionOccurred)(env)) {
867 JNI_FUNC_PTR(env,ExceptionClear)(env);
868 error = AGENT_ERROR_OUT_OF_MEMORY;
869 goto err;
870 }
871
872 /*
873 * Make the debugger thread a daemon
874 */
875 JNI_FUNC_PTR(env,CallVoidMethod)
876 (env, thread, gdata->threadSetDaemon, JNI_TRUE);
877 if (JNI_FUNC_PTR(env,ExceptionOccurred)(env)) {
878 JNI_FUNC_PTR(env,ExceptionClear)(env);
879 error = AGENT_ERROR_JNI_EXCEPTION;
880 goto err;
881 }
882
883 error = threadControl_addDebugThread(thread);
884 if (error == JVMTI_ERROR_NONE) {
885 /*
886 * Debugger threads need cycles in all sorts of strange
887 * situations (e.g. infinite cpu-bound loops), so give the
888 * thread a high priority. Note that if the VM has an application
889 * thread running at the max priority, there is still a chance
890 * that debugger threads will be starved. (There needs to be
891 * a way to give debugger threads a priority higher than any
892 * application thread).
893 */
894 error = JVMTI_FUNC_PTR(gdata->jvmti,RunAgentThread)
895 (gdata->jvmti, thread, func, arg,
896 JVMTI_THREAD_MAX_PRIORITY);
897 }
898
899 err: ;
900
901 } END_WITH_LOCAL_REFS(env);
902
903 return error;
904 }
905
906 jvmtiError
907 jvmtiGetCapabilities(jvmtiCapabilities *caps)
908 {
909 if ( gdata->vmDead ) {
910 return AGENT_ERROR_VM_DEAD;
911 }
912 if (!gdata->haveCachedJvmtiCapabilities) {
913 jvmtiError error;
914
915 error = JVMTI_FUNC_PTR(gdata->jvmti,GetCapabilities)
916 (gdata->jvmti, &(gdata->cachedJvmtiCapabilities));
917 if (error != JVMTI_ERROR_NONE) {
918 return error;
919 }
920 gdata->haveCachedJvmtiCapabilities = JNI_TRUE;
921 }
922
923 *caps = gdata->cachedJvmtiCapabilities;
924
925 return JVMTI_ERROR_NONE;
926 }
927
928 static jint
929 jvmtiVersion(void)
930 {
931 if (gdata->cachedJvmtiVersion == 0) {
932 jvmtiError error;
933 error = JVMTI_FUNC_PTR(gdata->jvmti,GetVersionNumber)
934 (gdata->jvmti, &(gdata->cachedJvmtiVersion));
935 if (error != JVMTI_ERROR_NONE) {
936 EXIT_ERROR(error, "on getting the JVMTI version number");
937 }
938 }
939 return gdata->cachedJvmtiVersion;
940 }
941
942 jint
943 jvmtiMajorVersion(void)
944 {
945 return (jvmtiVersion() & JVMTI_VERSION_MASK_MAJOR)
946 >> JVMTI_VERSION_SHIFT_MAJOR;
947 }
948
949 jint
950 jvmtiMinorVersion(void)
951 {
952 return (jvmtiVersion() & JVMTI_VERSION_MASK_MINOR)
953 >> JVMTI_VERSION_SHIFT_MINOR;
954 }
955
956 jint
957 jvmtiMicroVersion(void)
958 {
959 return (jvmtiVersion() & JVMTI_VERSION_MASK_MICRO)
960 >> JVMTI_VERSION_SHIFT_MICRO;
961 }
962
963 jvmtiError
964 getSourceDebugExtension(jclass clazz, char **extensionPtr)
965 {
966 return JVMTI_FUNC_PTR(gdata->jvmti,GetSourceDebugExtension)
967 (gdata->jvmti, clazz, extensionPtr);
968 }
969
970
971 static void
972 handleInterrupt(void)
973 {
974 /*
975 * An interrupt is handled:
976 *
977 * 1) for running application threads by deferring the interrupt
978 * until the current event handler has concluded.
979 *
980 * 2) for debugger threads by ignoring the interrupt; this is the
981 * most robust solution since debugger threads don't use interrupts
982 * to signal any condition.
983 *
984 * 3) for application threads that have not started or already
985 * ended by ignoring the interrupt. In the former case, the application
986 * is relying on timing to determine whether or not the thread sees
987 * the interrupt; in the latter case, the interrupt is meaningless.
988 */
989 jthread thread = threadControl_currentThread();
990 if ((thread != NULL) && (!threadControl_isDebugThread(thread))) {
991 threadControl_setPendingInterrupt(thread);
992 }
993 }
994
995 static jvmtiError
996 ignore_vm_death(jvmtiError error)
997 {
998 if (error == JVMTI_ERROR_WRONG_PHASE) {
999 LOG_MISC(("VM_DEAD, in debugMonitor*()?"));
1000 return JVMTI_ERROR_NONE; /* JVMTI does this, not JVMDI? */
1001 }
1002 return error;
1003 }
1004
1005 void
1006 debugMonitorEnter(jrawMonitorID monitor)
1007 {
1008 jvmtiError error;
1009 error = JVMTI_FUNC_PTR(gdata->jvmti,RawMonitorEnter)
1010 (gdata->jvmti, monitor);
1011 error = ignore_vm_death(error);
1012 if (error != JVMTI_ERROR_NONE) {
1013 EXIT_ERROR(error, "on raw monitor enter");
1014 }
1015 }
1016
1017 void
1018 debugMonitorExit(jrawMonitorID monitor)
1019 {
1020 jvmtiError error;
1021
1022 error = JVMTI_FUNC_PTR(gdata->jvmti,RawMonitorExit)
1023 (gdata->jvmti, monitor);
1024 error = ignore_vm_death(error);
1025 if (error != JVMTI_ERROR_NONE) {
1026 EXIT_ERROR(error, "on raw monitor exit");
1027 }
1028 }
1029
1030 void
1031 debugMonitorWait(jrawMonitorID monitor)
1032 {
1033 jvmtiError error;
1034 error = JVMTI_FUNC_PTR(gdata->jvmti,RawMonitorWait)
1035 (gdata->jvmti, monitor, ((jlong)(-1)));
1036
1037 /*
1038 * According to the JLS (17.8), here we have
1039 * either :
1040 * a- been notified
1041 * b- gotten a spurious wakeup
1042 * c- been interrupted
1043 * If both a and c have happened, the VM must choose
1044 * which way to return - a or c. If it chooses c
1045 * then the notify is gone - either to some other
1046 * thread that is also waiting, or it is dropped
1047 * on the floor.
1048 *
1049 * a is what we expect. b won't hurt us any -
1050 * callers should be programmed to handle
1051 * spurious wakeups. In case of c,
1052 * then the interrupt has been cleared, but
1053 * we don't want to consume it. It came from
1054 * user code and is intended for user code, not us.
1055 * So, we will remember that the interrupt has
1056 * occurred and re-activate it when this thread
1057 * goes back into user code.
1058 * That being said, what do we do here? Since
1059 * we could have been notified too, here we will
1060 * just pretend that we have been. It won't hurt
1061 * anything to return in the same way as if
1062 * we were notified since callers have to be able to
1063 * handle spurious wakeups anyway.
1064 */
1065 if (error == JVMTI_ERROR_INTERRUPT) {
1066 handleInterrupt();
1067 error = JVMTI_ERROR_NONE;
1068 }
1069 error = ignore_vm_death(error);
1070 if (error != JVMTI_ERROR_NONE) {
1071 EXIT_ERROR(error, "on raw monitor wait");
1072 }
1073 }
1074
1075 void
1076 debugMonitorNotify(jrawMonitorID monitor)
1077 {
1078 jvmtiError error;
1079
1080 error = JVMTI_FUNC_PTR(gdata->jvmti,RawMonitorNotify)
1081 (gdata->jvmti, monitor);
1082 error = ignore_vm_death(error);
1083 if (error != JVMTI_ERROR_NONE) {
1084 EXIT_ERROR(error, "on raw monitor notify");
1085 }
1086 }
1087
1088 void
1089 debugMonitorNotifyAll(jrawMonitorID monitor)
1090 {
1091 jvmtiError error;
1092
1093 error = JVMTI_FUNC_PTR(gdata->jvmti,RawMonitorNotifyAll)
1094 (gdata->jvmti, monitor);
1095 error = ignore_vm_death(error);
1096 if (error != JVMTI_ERROR_NONE) {
1097 EXIT_ERROR(error, "on raw monitor notify all");
1098 }
1099 }
1100
1101 jrawMonitorID
1102 debugMonitorCreate(char *name)
1103 {
1104 jrawMonitorID monitor;
1105 jvmtiError error;
1106
1107 error = JVMTI_FUNC_PTR(gdata->jvmti,CreateRawMonitor)
1108 (gdata->jvmti, name, &monitor);
1109 if (error != JVMTI_ERROR_NONE) {
1110 EXIT_ERROR(error, "on creation of a raw monitor");
1111 }
1112 return monitor;
1113 }
1114
1115 void
1116 debugMonitorDestroy(jrawMonitorID monitor)
1117 {
1118 jvmtiError error;
1119
1120 error = JVMTI_FUNC_PTR(gdata->jvmti,DestroyRawMonitor)
1121 (gdata->jvmti, monitor);
1122 error = ignore_vm_death(error);
1123 if (error != JVMTI_ERROR_NONE) {
1124 EXIT_ERROR(error, "on destruction of raw monitor");
1125 }
1126 }
1127
1128 /**
1129 * Return array of all threads (must be inside a WITH_LOCAL_REFS)
1130 */
1131 jthread *
1132 allThreads(jint *count)
1133 {
1134 jthread *threads;
1135 jvmtiError error;
1136
1137 *count = 0;
1138 threads = NULL;
1139 error = JVMTI_FUNC_PTR(gdata->jvmti,GetAllThreads)
1140 (gdata->jvmti, count, &threads);
1141 if (error == AGENT_ERROR_OUT_OF_MEMORY) {
1142 return NULL; /* Let caller deal with no memory? */
1143 }
1144 if (error != JVMTI_ERROR_NONE) {
1145 EXIT_ERROR(error, "getting all threads");
1146 }
1147 return threads;
1148 }
1149
1150 /**
1151 * Fill the passed in structure with thread group info.
1152 * name field is JVMTI allocated. parent is global ref.
1153 */
1154 void
1155 threadGroupInfo(jthreadGroup group, jvmtiThreadGroupInfo *info)
1156 {
1157 jvmtiError error;
1158
1159 error = JVMTI_FUNC_PTR(gdata->jvmti,GetThreadGroupInfo)
1160 (gdata->jvmti, group, info);
1161 if (error != JVMTI_ERROR_NONE) {
1162 EXIT_ERROR(error, "on getting thread group info");
1163 }
1164 }
1165
1166 /**
1167 * Return class signature string
1168 */
1169 jvmtiError
1170 classSignature(jclass clazz, char **psignature, char **pgeneric_signature)
1171 {
1172 jvmtiError error;
1173 char *signature = NULL;
1174
1175 /*
1176 * pgeneric_signature can be NULL, and GetClassSignature
1177 * accepts NULL.
1178 */
1179 error = JVMTI_FUNC_PTR(gdata->jvmti,GetClassSignature)
1180 (gdata->jvmti, clazz, &signature, pgeneric_signature);
1181
1182 if ( psignature != NULL ) {
1183 *psignature = signature;
1184 } else if ( signature != NULL ) {
1185 jvmtiDeallocate(signature);
1186 }
1187 return error;
1188 }
1189
1190 /* Get class name (not signature) */
1191 char *
1192 getClassname(jclass clazz)
1193 {
1194 char *classname;
1195
1196 classname = NULL;
1197 if ( clazz != NULL ) {
1198 if (classSignature(clazz, &classname, NULL) != JVMTI_ERROR_NONE) {
1199 classname = NULL;
1200 } else {
1201 /* Convert in place */
1202 convertSignatureToClassname(classname);
1203 }
1204 }
1205 return classname; /* Caller must free this memory */
1206 }
1207
1208 void
1209 writeGenericSignature(PacketOutputStream *out, char *genericSignature)
1210 {
1211 if (genericSignature == NULL) {
1212 (void)outStream_writeString(out, "");
1213 } else {
1214 (void)outStream_writeString(out, genericSignature);
1215 }
1216 }
1217
1218 jint
1219 classStatus(jclass clazz)
1220 {
1221 jint status;
1222 jvmtiError error;
1223
1224 error = JVMTI_FUNC_PTR(gdata->jvmti,GetClassStatus)
1225 (gdata->jvmti, clazz, &status);
1226 if (error != JVMTI_ERROR_NONE) {
1227 EXIT_ERROR(error, "on getting class status");
1228 }
1229 return status;
1230 }
1231
1232 static jboolean
1233 isArrayClass(jclass clazz)
1234 {
1235 jboolean isArray = JNI_FALSE;
1236 jvmtiError error;
1237
1238 error = JVMTI_FUNC_PTR(gdata->jvmti,IsArrayClass)
1239 (gdata->jvmti, clazz, &isArray);
1240 if (error != JVMTI_ERROR_NONE) {
1241 EXIT_ERROR(error, "on checking for an array class");
1242 }
1243 return isArray;
1244 }
1245
1246 static jboolean
1247 isInterface(jclass clazz)
1248 {
1249 jboolean isInterface = JNI_FALSE;
1250 jvmtiError error;
1251
1252 error = JVMTI_FUNC_PTR(gdata->jvmti,IsInterface)
1253 (gdata->jvmti, clazz, &isInterface);
1254 if (error != JVMTI_ERROR_NONE) {
1255 EXIT_ERROR(error, "on checking for an interface");
1256 }
1257 return isInterface;
1258 }
1259
1260 jvmtiError
1261 isFieldSynthetic(jclass clazz, jfieldID field, jboolean *psynthetic)
1262 {
1263 jvmtiError error;
1264
1265 error = JVMTI_FUNC_PTR(gdata->jvmti,IsFieldSynthetic)
1266 (gdata->jvmti, clazz, field, psynthetic);
1267 if ( error == JVMTI_ERROR_MUST_POSSESS_CAPABILITY ) {
1268 /* If the query is not supported, we assume it is not synthetic. */
1269 *psynthetic = JNI_FALSE;
1270 return JVMTI_ERROR_NONE;
1271 }
1272 return error;
1273 }
1274
1275 jvmtiError
1276 isMethodSynthetic(jmethodID method, jboolean *psynthetic)
1277 {
1278 jvmtiError error;
1279
1280 error = JVMTI_FUNC_PTR(gdata->jvmti,IsMethodSynthetic)
1281 (gdata->jvmti, method, psynthetic);
1282 if ( error == JVMTI_ERROR_MUST_POSSESS_CAPABILITY ) {
1283 /* If the query is not supported, we assume it is not synthetic. */
1284 *psynthetic = JNI_FALSE;
1285 return JVMTI_ERROR_NONE;
1286 }
1287 return error;
1288 }
1289
1290 jboolean
1291 isMethodNative(jmethodID method)
1292 {
1293 jboolean isNative = JNI_FALSE;
1294 jvmtiError error;
1295
1296 error = JVMTI_FUNC_PTR(gdata->jvmti,IsMethodNative)
1297 (gdata->jvmti, method, &isNative);
1298 if (error != JVMTI_ERROR_NONE) {
1299 EXIT_ERROR(error, "on checking for a native interface");
1300 }
1301 return isNative;
1302 }
1303
1304 jboolean
1305 isSameObject(JNIEnv *env, jobject o1, jobject o2)
1306 {
1307 if ( o1==o2 ) {
1308 return JNI_TRUE;
1309 }
1310 return FUNC_PTR(env,IsSameObject)(env, o1, o2);
1311 }
1312
1313 jint
1314 objectHashCode(jobject object)
1315 {
1316 jint hashCode = 0;
1317 jvmtiError error;
1318
1319 if ( object!=NULL ) {
1320 error = JVMTI_FUNC_PTR(gdata->jvmti,GetObjectHashCode)
1321 (gdata->jvmti, object, &hashCode);
1322 if (error != JVMTI_ERROR_NONE) {
1323 EXIT_ERROR(error, "on getting an object hash code");
1324 }
1325 }
1326 return hashCode;
1327 }
1328
1329 /* Get all implemented interfaces (must be inside a WITH_LOCAL_REFS) */
1330 jvmtiError
1331 allInterfaces(jclass clazz, jclass **ppinterfaces, jint *pcount)
1332 {
1333 jvmtiError error;
1334
1335 *pcount = 0;
1336 *ppinterfaces = NULL;
1337 error = JVMTI_FUNC_PTR(gdata->jvmti,GetImplementedInterfaces)
1338 (gdata->jvmti, clazz, pcount, ppinterfaces);
1339 return error;
1340 }
1341
1342 /* Get all loaded classes (must be inside a WITH_LOCAL_REFS) */
1343 jvmtiError
1344 allLoadedClasses(jclass **ppclasses, jint *pcount)
1345 {
1346 jvmtiError error;
1347
1348 *pcount = 0;
1349 *ppclasses = NULL;
1350 error = JVMTI_FUNC_PTR(gdata->jvmti,GetLoadedClasses)
1351 (gdata->jvmti, pcount, ppclasses);
1352 return error;
1353 }
1354
1355 /* Get all loaded classes for a loader (must be inside a WITH_LOCAL_REFS) */
1356 jvmtiError
1357 allClassLoaderClasses(jobject loader, jclass **ppclasses, jint *pcount)
1358 {
1359 jvmtiError error;
1360
1361 *pcount = 0;
1362 *ppclasses = NULL;
1363 error = JVMTI_FUNC_PTR(gdata->jvmti,GetClassLoaderClasses)
1364 (gdata->jvmti, loader, pcount, ppclasses);
1365 return error;
1366 }
1367
1368 static jboolean
1369 is_a_nested_class(char *outer_sig, int outer_sig_len, char *sig, int sep)
1370 {
1371 char *inner;
1372
1373 /* Assumed outer class signature is "LOUTERCLASSNAME;"
1374 * inner class signature is "LOUTERCLASSNAME$INNERNAME;"
1375 *
1376 * INNERNAME can take the form:
1377 * [0-9][1-9]* anonymous class somewhere in the file
1378 * [0-9][1-9]*NAME local class somewhere in the OUTER class
1379 * NAME nested class in OUTER
1380 *
1381 * If NAME itself contains a $ (sep) then classname is further nested
1382 * inside another class.
1383 *
1384 */
1385
1386 /* Check prefix first */
1387 if ( strncmp(sig, outer_sig, outer_sig_len-1) != 0 ) {
1388 return JNI_FALSE;
1389 }
1390
1391 /* Prefix must be followed by a $ (sep) */
1392 if ( sig[outer_sig_len-1] != sep ) {
1393 return JNI_FALSE; /* No sep follows the match, must not be nested. */
1394 }
1395
1396 /* Walk past any digits, if we reach the end, must be pure anonymous */
1397 inner = sig + outer_sig_len;
1398 #if 1 /* We want to return local classes */
1399 while ( *inner && isdigit(*inner) ) {
1400 inner++;
1401 }
1402 /* But anonymous class names can't be trusted. */
1403 if ( *inner == ';' ) {
1404 return JNI_FALSE; /* A pure anonymous class */
1405 }
1406 #else
1407 if ( *inner && isdigit(*inner) ) {
1408 return JNI_FALSE; /* A pure anonymous or local class */
1409 }
1410 #endif
1411
1412 /* Nested deeper? */
1413 if ( strchr(inner, sep) != NULL ) {
1414 return JNI_FALSE; /* Nested deeper than we want? */
1415 }
1416 return JNI_TRUE;
1417 }
1418
1419 /* Get all nested classes for a class (must be inside a WITH_LOCAL_REFS) */
1420 jvmtiError
1421 allNestedClasses(jclass parent_clazz, jclass **ppnested, jint *pcount)
1422 {
1423 jvmtiError error;
1424 jobject parent_loader;
1425 jclass *classes;
1426 char *signature;
1427 size_t len;
1428 jint count;
1429 jint ncount;
1430 int i;
1431
1432 *ppnested = NULL;
1433 *pcount = 0;
1434
1435 parent_loader = NULL;
1436 classes = NULL;
1437 signature = NULL;
1438 count = 0;
1439 ncount = 0;
1440
1441 error = classLoader(parent_clazz, &parent_loader);
1442 if (error != JVMTI_ERROR_NONE) {
1443 return error;
1444 }
1445 error = classSignature(parent_clazz, &signature, NULL);
1446 if (error != JVMTI_ERROR_NONE) {
1447 return error;
1448 }
1449 len = strlen(signature);
1450
1451 error = allClassLoaderClasses(parent_loader, &classes, &count);
1452 if ( error != JVMTI_ERROR_NONE ) {
1453 jvmtiDeallocate(signature);
1454 return error;
1455 }
1456
1457 for (i=0; i<count; i++) {
1458 jclass clazz;
1459 char *candidate_signature;
1460
1461 clazz = classes[i];
1462 candidate_signature = NULL;
1463 error = classSignature(clazz, &candidate_signature, NULL);
1464 if (error != JVMTI_ERROR_NONE) {
1465 break;
1466 }
1467
1468 if ( is_a_nested_class(signature, (int)len, candidate_signature, '$') ||
1469 is_a_nested_class(signature, (int)len, candidate_signature, '#') ) {
1470 /* Float nested classes to top */
1471 classes[i] = classes[ncount];
1472 classes[ncount++] = clazz;
1473 }
1474 jvmtiDeallocate(candidate_signature);
1475 }
1476
1477 jvmtiDeallocate(signature);
1478
1479 if ( count != 0 && ncount == 0 ) {
1480 jvmtiDeallocate(classes);
1481 classes = NULL;
1482 }
1483
1484 *ppnested = classes;
1485 *pcount = ncount;
1486 return error;
1487 }
1488
1489 void
1490 createLocalRefSpace(JNIEnv *env, jint capacity)
1491 {
1492 /*
1493 * Save current exception since it might get overwritten by
1494 * the calls below. Note we must depend on space in the existing
1495 * frame because asking for a new frame may generate an exception.
1496 */
1497 jobject throwable = JNI_FUNC_PTR(env,ExceptionOccurred)(env);
1498
1499 /*
1500 * Use the current frame if necessary; otherwise create a new one
1501 */
1502 if (JNI_FUNC_PTR(env,PushLocalFrame)(env, capacity) < 0) {
1503 EXIT_ERROR(AGENT_ERROR_OUT_OF_MEMORY,"PushLocalFrame: Unable to push JNI frame");
1504 }
1505
1506 /*
1507 * TO DO: This could be more efficient if it used EnsureLocalCapacity,
1508 * but that would not work if two functions on the call stack
1509 * use this function. We would need to either track reserved
1510 * references on a per-thread basis or come up with a convention
1511 * that would prevent two functions from depending on this function
1512 * at the same time.
1513 */
1514
1515 /*
1516 * Restore exception state from before call
1517 */
1518 if (throwable != NULL) {
1519 JNI_FUNC_PTR(env,Throw)(env, throwable);
1520 } else {
1521 JNI_FUNC_PTR(env,ExceptionClear)(env);
1522 }
1523 }
1524
1525 jboolean
1526 isClass(jobject object)
1527 {
1528 JNIEnv *env = getEnv();
1529 return JNI_FUNC_PTR(env,IsInstanceOf)(env, object, gdata->classClass);
1530 }
1531
1532 jboolean
1533 isVThread(jobject object)
1534 {
1535 JNIEnv *env = getEnv();
1536 return JNI_FUNC_PTR(env,IsVirtualThread)(env, object);
1537 }
1538
1539 jboolean
1540 isThread(jobject object)
1541 {
1542 JNIEnv *env = getEnv();
1543 return JNI_FUNC_PTR(env,IsInstanceOf)(env, object, gdata->threadClass);
1544 }
1545
1546 jboolean
1547 isThreadGroup(jobject object)
1548 {
1549 JNIEnv *env = getEnv();
1550 return JNI_FUNC_PTR(env,IsInstanceOf)(env, object, gdata->threadGroupClass);
1551 }
1552
1553 jboolean
1554 isString(jobject object)
1555 {
1556 JNIEnv *env = getEnv();
1557 return JNI_FUNC_PTR(env,IsInstanceOf)(env, object, gdata->stringClass);
1558 }
1559
1560 jboolean
1561 isClassLoader(jobject object)
1562 {
1563 JNIEnv *env = getEnv();
1564 return JNI_FUNC_PTR(env,IsInstanceOf)(env, object, gdata->classLoaderClass);
1565 }
1566
1567 jboolean
1568 isArray(jobject object)
1569 {
1570 JNIEnv *env = getEnv();
1571 jboolean is;
1572
1573 WITH_LOCAL_REFS(env, 1) {
1574 jclass clazz;
1575 clazz = JNI_FUNC_PTR(env,GetObjectClass)(env, object);
1576 is = isArrayClass(clazz);
1577 } END_WITH_LOCAL_REFS(env);
1578
1579 return is;
1580 }
1581
1582 /**
1583 * Return property value as jstring
1584 */
1585 static jstring
1586 getPropertyValue(JNIEnv *env, char *propertyName)
1587 {
1588 jstring valueString;
1589 jstring nameString;
1590
1591 valueString = NULL;
1592
1593 /* Create new String object to hold the property name */
1594 nameString = JNI_FUNC_PTR(env,NewStringUTF)(env, propertyName);
1595 if (JNI_FUNC_PTR(env,ExceptionOccurred)(env)) {
1596 JNI_FUNC_PTR(env,ExceptionClear)(env);
1597 /* NULL will be returned below */
1598 } else {
1599 /* Call valueString = System.getProperty(nameString) */
1600 valueString = JNI_FUNC_PTR(env,CallStaticObjectMethod)
1601 (env, gdata->systemClass, gdata->systemGetProperty, nameString);
1602 if (JNI_FUNC_PTR(env,ExceptionOccurred)(env)) {
1603 JNI_FUNC_PTR(env,ExceptionClear)(env);
1604 valueString = NULL;
1605 }
1606 }
1607 return valueString;
1608 }
1609
1610 /**
1611 * Set an agent property
1612 */
1613 void
1614 setAgentPropertyValue(JNIEnv *env, char *propertyName, char* propertyValue)
1615 {
1616 jstring nameString;
1617 jstring valueString;
1618
1619 if (gdata->agent_properties == NULL) {
1620 /* VMSupport doesn't exist; so ignore */
1621 return;
1622 }
1623
1624 /* Create jstrings for property name and value */
1625 nameString = JNI_FUNC_PTR(env,NewStringUTF)(env, propertyName);
1626 if (nameString != NULL) {
1627 /* convert the value to UTF8 */
1628 int len;
1629 char *utf8value;
1630 int utf8maxSize;
1631
1632 len = (int)strlen(propertyValue);
1633 utf8maxSize = len * 4 + 1;
1634 utf8value = (char *)jvmtiAllocate(utf8maxSize);
1635 if (utf8value != NULL) {
1636 utf8FromPlatform(propertyValue, len, (jbyte *)utf8value, utf8maxSize);
1637 valueString = JNI_FUNC_PTR(env, NewStringUTF)(env, utf8value);
1638 jvmtiDeallocate(utf8value);
1639
1640 if (valueString != NULL) {
1641 /* invoke Properties.setProperty */
1642 JNI_FUNC_PTR(env,CallObjectMethod)
1643 (env, gdata->agent_properties,
1644 gdata->setProperty,
1645 nameString, valueString);
1646 }
1647 }
1648 }
1649 if (JNI_FUNC_PTR(env,ExceptionOccurred)(env)) {
1650 JNI_FUNC_PTR(env,ExceptionClear)(env);
1651 }
1652 }
1653
1654 /**
1655 * Return property value as JDWP allocated string in UTF8 encoding
1656 */
1657 static char *
1658 getPropertyUTF8(JNIEnv *env, char *propertyName)
1659 {
1660 jvmtiError error;
1661 char *value;
1662
1663 value = NULL;
1664 error = JVMTI_FUNC_PTR(gdata->jvmti,GetSystemProperty)
1665 (gdata->jvmti, (const char *)propertyName, &value);
1666 if (error != JVMTI_ERROR_NONE) {
1667 jstring valueString;
1668
1669 value = NULL;
1670 valueString = getPropertyValue(env, propertyName);
1671
1672 if (valueString != NULL) {
1673 const char *utf;
1674
1675 /* Get the UTF8 encoding for this property value string */
1676 utf = JNI_FUNC_PTR(env,GetStringUTFChars)(env, valueString, NULL);
1677 /* Make a copy for returning, release the JNI copy */
1678 value = jvmtiAllocate((int)strlen(utf) + 1);
1679 if (value != NULL) {
1680 (void)strcpy(value, utf);
1681 }
1682 JNI_FUNC_PTR(env,ReleaseStringUTFChars)(env, valueString, utf);
1683 }
1684 }
1685 if ( value == NULL ) {
1686 ERROR_MESSAGE(("JDWP Can't get property value for %s", propertyName));
1687 EXIT_ERROR(AGENT_ERROR_NULL_POINTER,NULL);
1688 }
1689 return value;
1690 }
1691
1692 jboolean
1693 isMethodObsolete(jmethodID method)
1694 {
1695 jvmtiError error;
1696 jboolean obsolete = JNI_TRUE;
1697
1698 if ( method != NULL ) {
1699 error = JVMTI_FUNC_PTR(gdata->jvmti,IsMethodObsolete)
1700 (gdata->jvmti, method, &obsolete);
1701 if (error != JVMTI_ERROR_NONE) {
1702 obsolete = JNI_TRUE;
1703 }
1704 }
1705 return obsolete;
1706 }
1707
1708 /* Get the jvmti environment to be used with tags */
1709 jvmtiEnv *
1710 getSpecialJvmti(void)
1711 {
1712 jvmtiEnv *jvmti;
1713 jvmtiError error;
1714 int rc;
1715
1716 /* Get one time use JVMTI Env */
1717 jvmtiCapabilities caps;
1718
1719 rc = JVM_FUNC_PTR(gdata->jvm,GetEnv)
1720 (gdata->jvm, (void **)&jvmti, JVMTI_VERSION);
1721 if (rc != JNI_OK) {
1722 return NULL;
1723 }
1724 (void)memset(&caps, 0, (int)sizeof(caps));
1725 caps.can_tag_objects = 1;
1726 error = JVMTI_FUNC_PTR(jvmti,AddCapabilities)(jvmti, &caps);
1727 if ( error != JVMTI_ERROR_NONE ) {
1728 return NULL;
1729 }
1730 return jvmti;
1731 }
1732
1733 void
1734 writeCodeLocation(PacketOutputStream *out, jclass clazz,
1735 jmethodID method, jlocation location)
1736 {
1737 jbyte tag;
1738
1739 if (clazz != NULL) {
1740 tag = referenceTypeTag(clazz);
1741 } else {
1742 tag = JDWP_TYPE_TAG(CLASS);
1743 }
1744 (void)outStream_writeByte(out, tag);
1745 (void)outStream_writeObjectRef(getEnv(), out, clazz);
1746 (void)outStream_writeMethodID(out, isMethodObsolete(method)?NULL:method);
1747 (void)outStream_writeLocation(out, location);
1748 }
1749
1750 void *
1751 jvmtiAllocate(jint numBytes)
1752 {
1753 void *ptr;
1754 jvmtiError error;
1755 if ( numBytes == 0 ) {
1756 return NULL;
1757 }
1758 error = JVMTI_FUNC_PTR(gdata->jvmti,Allocate)
1759 (gdata->jvmti, numBytes, (unsigned char**)&ptr);
1760 if (error != JVMTI_ERROR_NONE ) {
1761 EXIT_ERROR(error, "Can't allocate jvmti memory");
1762 }
1763 return ptr;
1764 }
1765
1766 void
1767 jvmtiDeallocate(void *ptr)
1768 {
1769 jvmtiError error;
1770 if ( ptr == NULL ) {
1771 return;
1772 }
1773 error = JVMTI_FUNC_PTR(gdata->jvmti,Deallocate)
1774 (gdata->jvmti, ptr);
1775 if (error != JVMTI_ERROR_NONE ) {
1776 EXIT_ERROR(error, "Can't deallocate jvmti memory");
1777 }
1778 }
1779
1780 /* Rarely needed, transport library uses JDWP errors, only use? */
1781 jvmtiError
1782 map2jvmtiError(jdwpError error)
1783 {
1784 switch ( error ) {
1785 case JDWP_ERROR(NONE):
1786 return JVMTI_ERROR_NONE;
1787 case JDWP_ERROR(INVALID_THREAD):
1788 return JVMTI_ERROR_INVALID_THREAD;
1789 case JDWP_ERROR(INVALID_THREAD_GROUP):
1790 return JVMTI_ERROR_INVALID_THREAD_GROUP;
1791 case JDWP_ERROR(INVALID_PRIORITY):
1792 return JVMTI_ERROR_INVALID_PRIORITY;
1793 case JDWP_ERROR(THREAD_NOT_SUSPENDED):
1794 return JVMTI_ERROR_THREAD_NOT_SUSPENDED;
1795 case JDWP_ERROR(THREAD_SUSPENDED):
1796 return JVMTI_ERROR_THREAD_SUSPENDED;
1797 case JDWP_ERROR(INVALID_OBJECT):
1798 return JVMTI_ERROR_INVALID_OBJECT;
1799 case JDWP_ERROR(INVALID_CLASS):
1800 return JVMTI_ERROR_INVALID_CLASS;
1801 case JDWP_ERROR(CLASS_NOT_PREPARED):
1802 return JVMTI_ERROR_CLASS_NOT_PREPARED;
1803 case JDWP_ERROR(INVALID_METHODID):
1804 return JVMTI_ERROR_INVALID_METHODID;
1805 case JDWP_ERROR(INVALID_LOCATION):
1806 return JVMTI_ERROR_INVALID_LOCATION;
1807 case JDWP_ERROR(INVALID_FIELDID):
1808 return JVMTI_ERROR_INVALID_FIELDID;
1809 case JDWP_ERROR(INVALID_FRAMEID):
1810 return AGENT_ERROR_INVALID_FRAMEID;
1811 case JDWP_ERROR(NO_MORE_FRAMES):
1812 return JVMTI_ERROR_NO_MORE_FRAMES;
1813 case JDWP_ERROR(OPAQUE_FRAME):
1814 return JVMTI_ERROR_OPAQUE_FRAME;
1815 case JDWP_ERROR(NOT_CURRENT_FRAME):
1816 return AGENT_ERROR_NOT_CURRENT_FRAME;
1817 case JDWP_ERROR(TYPE_MISMATCH):
1818 return JVMTI_ERROR_TYPE_MISMATCH;
1819 case JDWP_ERROR(INVALID_SLOT):
1820 return JVMTI_ERROR_INVALID_SLOT;
1821 case JDWP_ERROR(DUPLICATE):
1822 return JVMTI_ERROR_DUPLICATE;
1823 case JDWP_ERROR(NOT_FOUND):
1824 return JVMTI_ERROR_NOT_FOUND;
1825 case JDWP_ERROR(INVALID_MONITOR):
1826 return JVMTI_ERROR_INVALID_MONITOR;
1827 case JDWP_ERROR(NOT_MONITOR_OWNER):
1828 return JVMTI_ERROR_NOT_MONITOR_OWNER;
1829 case JDWP_ERROR(INTERRUPT):
1830 return JVMTI_ERROR_INTERRUPT;
1831 case JDWP_ERROR(INVALID_CLASS_FORMAT):
1832 return JVMTI_ERROR_INVALID_CLASS_FORMAT;
1833 case JDWP_ERROR(CIRCULAR_CLASS_DEFINITION):
1834 return JVMTI_ERROR_CIRCULAR_CLASS_DEFINITION;
1835 case JDWP_ERROR(FAILS_VERIFICATION):
1836 return JVMTI_ERROR_FAILS_VERIFICATION;
1837 case JDWP_ERROR(ADD_METHOD_NOT_IMPLEMENTED):
1838 return JVMTI_ERROR_UNSUPPORTED_REDEFINITION_METHOD_ADDED;
1839 case JDWP_ERROR(SCHEMA_CHANGE_NOT_IMPLEMENTED):
1840 return JVMTI_ERROR_UNSUPPORTED_REDEFINITION_SCHEMA_CHANGED;
1841 case JDWP_ERROR(INVALID_TYPESTATE):
1842 return JVMTI_ERROR_INVALID_TYPESTATE;
1843 case JDWP_ERROR(HIERARCHY_CHANGE_NOT_IMPLEMENTED):
1844 return JVMTI_ERROR_UNSUPPORTED_REDEFINITION_HIERARCHY_CHANGED;
1845 case JDWP_ERROR(DELETE_METHOD_NOT_IMPLEMENTED):
1846 return JVMTI_ERROR_UNSUPPORTED_REDEFINITION_METHOD_DELETED;
1847 case JDWP_ERROR(UNSUPPORTED_VERSION):
1848 return JVMTI_ERROR_UNSUPPORTED_VERSION;
1849 case JDWP_ERROR(NAMES_DONT_MATCH):
1850 return JVMTI_ERROR_NAMES_DONT_MATCH;
1851 case JDWP_ERROR(CLASS_MODIFIERS_CHANGE_NOT_IMPLEMENTED):
1852 return JVMTI_ERROR_UNSUPPORTED_REDEFINITION_CLASS_MODIFIERS_CHANGED;
1853 case JDWP_ERROR(METHOD_MODIFIERS_CHANGE_NOT_IMPLEMENTED):
1854 return JVMTI_ERROR_UNSUPPORTED_REDEFINITION_METHOD_MODIFIERS_CHANGED;
1855 case JDWP_ERROR(CLASS_ATTRIBUTE_CHANGE_NOT_IMPLEMENTED):
1856 return JVMTI_ERROR_UNSUPPORTED_REDEFINITION_CLASS_ATTRIBUTE_CHANGED;
1857 case JDWP_ERROR(NOT_IMPLEMENTED):
1858 return JVMTI_ERROR_NOT_AVAILABLE;
1859 case JDWP_ERROR(NULL_POINTER):
1860 return JVMTI_ERROR_NULL_POINTER;
1861 case JDWP_ERROR(ABSENT_INFORMATION):
1862 return JVMTI_ERROR_ABSENT_INFORMATION;
1863 case JDWP_ERROR(INVALID_EVENT_TYPE):
1864 return JVMTI_ERROR_INVALID_EVENT_TYPE;
1865 case JDWP_ERROR(ILLEGAL_ARGUMENT):
1866 return JVMTI_ERROR_ILLEGAL_ARGUMENT;
1867 case JDWP_ERROR(OUT_OF_MEMORY):
1868 return JVMTI_ERROR_OUT_OF_MEMORY;
1869 case JDWP_ERROR(ACCESS_DENIED):
1870 return JVMTI_ERROR_ACCESS_DENIED;
1871 case JDWP_ERROR(VM_DEAD):
1872 return JVMTI_ERROR_WRONG_PHASE;
1873 case JDWP_ERROR(UNATTACHED_THREAD):
1874 return JVMTI_ERROR_UNATTACHED_THREAD;
1875 case JDWP_ERROR(INVALID_TAG):
1876 return AGENT_ERROR_INVALID_TAG;
1877 case JDWP_ERROR(ALREADY_INVOKING):
1878 return AGENT_ERROR_ALREADY_INVOKING;
1879 case JDWP_ERROR(INVALID_INDEX):
1880 return AGENT_ERROR_INVALID_INDEX;
1881 case JDWP_ERROR(INVALID_LENGTH):
1882 return AGENT_ERROR_INVALID_LENGTH;
1883 case JDWP_ERROR(INVALID_STRING):
1884 return AGENT_ERROR_INVALID_STRING;
1885 case JDWP_ERROR(INVALID_CLASS_LOADER):
1886 return AGENT_ERROR_INVALID_CLASS_LOADER;
1887 case JDWP_ERROR(INVALID_ARRAY):
1888 return AGENT_ERROR_INVALID_ARRAY;
1889 case JDWP_ERROR(TRANSPORT_LOAD):
1890 return AGENT_ERROR_TRANSPORT_LOAD;
1891 case JDWP_ERROR(TRANSPORT_INIT):
1892 return AGENT_ERROR_TRANSPORT_INIT;
1893 case JDWP_ERROR(NATIVE_METHOD):
1894 return AGENT_ERROR_NATIVE_METHOD;
1895 case JDWP_ERROR(INVALID_COUNT):
1896 return AGENT_ERROR_INVALID_COUNT;
1897 case JDWP_ERROR(INTERNAL):
1898 return AGENT_ERROR_JDWP_INTERNAL;
1899 }
1900 return AGENT_ERROR_INTERNAL;
1901 }
1902
1903 static jvmtiEvent index2jvmti[EI_max-EI_min+1];
1904 static jdwpEvent index2jdwp [EI_max-EI_min+1];
1905
1906 void
1907 eventIndexInit(void)
1908 {
1909 (void)memset(index2jvmti, 0, (int)sizeof(index2jvmti));
1910 (void)memset(index2jdwp, 0, (int)sizeof(index2jdwp));
1911
1912 index2jvmti[EI_SINGLE_STEP -EI_min] = JVMTI_EVENT_SINGLE_STEP;
1913 index2jvmti[EI_BREAKPOINT -EI_min] = JVMTI_EVENT_BREAKPOINT;
1914 index2jvmti[EI_FRAME_POP -EI_min] = JVMTI_EVENT_FRAME_POP;
1915 index2jvmti[EI_EXCEPTION -EI_min] = JVMTI_EVENT_EXCEPTION;
1916 index2jvmti[EI_THREAD_START -EI_min] = JVMTI_EVENT_THREAD_START;
1917 index2jvmti[EI_THREAD_END -EI_min] = JVMTI_EVENT_THREAD_END;
1918 index2jvmti[EI_CLASS_PREPARE -EI_min] = JVMTI_EVENT_CLASS_PREPARE;
1919 index2jvmti[EI_CLASS_UNLOAD -EI_min] = 0; // No mapping to JVMTI event
1920 index2jvmti[EI_CLASS_LOAD -EI_min] = JVMTI_EVENT_CLASS_LOAD;
1921 index2jvmti[EI_FIELD_ACCESS -EI_min] = JVMTI_EVENT_FIELD_ACCESS;
1922 index2jvmti[EI_FIELD_MODIFICATION -EI_min] = JVMTI_EVENT_FIELD_MODIFICATION;
1923 index2jvmti[EI_EXCEPTION_CATCH -EI_min] = JVMTI_EVENT_EXCEPTION_CATCH;
1924 index2jvmti[EI_METHOD_ENTRY -EI_min] = JVMTI_EVENT_METHOD_ENTRY;
1925 index2jvmti[EI_METHOD_EXIT -EI_min] = JVMTI_EVENT_METHOD_EXIT;
1926 index2jvmti[EI_MONITOR_CONTENDED_ENTER -EI_min] = JVMTI_EVENT_MONITOR_CONTENDED_ENTER;
1927 index2jvmti[EI_MONITOR_CONTENDED_ENTERED -EI_min] = JVMTI_EVENT_MONITOR_CONTENDED_ENTERED;
1928 index2jvmti[EI_MONITOR_WAIT -EI_min] = JVMTI_EVENT_MONITOR_WAIT;
1929 index2jvmti[EI_MONITOR_WAITED -EI_min] = JVMTI_EVENT_MONITOR_WAITED;
1930 index2jvmti[EI_VM_INIT -EI_min] = JVMTI_EVENT_VM_INIT;
1931 index2jvmti[EI_VM_DEATH -EI_min] = JVMTI_EVENT_VM_DEATH;
1932 index2jvmti[EI_VIRTUAL_THREAD_START -EI_min] = JVMTI_EVENT_VIRTUAL_THREAD_START;
1933 index2jvmti[EI_VIRTUAL_THREAD_END -EI_min] = JVMTI_EVENT_VIRTUAL_THREAD_END;
1934
1935 index2jdwp[EI_SINGLE_STEP -EI_min] = JDWP_EVENT(SINGLE_STEP);
1936 index2jdwp[EI_BREAKPOINT -EI_min] = JDWP_EVENT(BREAKPOINT);
1937 index2jdwp[EI_FRAME_POP -EI_min] = JDWP_EVENT(FRAME_POP);
1938 index2jdwp[EI_EXCEPTION -EI_min] = JDWP_EVENT(EXCEPTION);
1939 index2jdwp[EI_THREAD_START -EI_min] = JDWP_EVENT(THREAD_START);
1940 index2jdwp[EI_THREAD_END -EI_min] = JDWP_EVENT(THREAD_END);
1941 index2jdwp[EI_CLASS_PREPARE -EI_min] = JDWP_EVENT(CLASS_PREPARE);
1942 index2jdwp[EI_CLASS_UNLOAD -EI_min] = JDWP_EVENT(CLASS_UNLOAD);
1943 index2jdwp[EI_CLASS_LOAD -EI_min] = JDWP_EVENT(CLASS_LOAD);
1944 index2jdwp[EI_FIELD_ACCESS -EI_min] = JDWP_EVENT(FIELD_ACCESS);
1945 index2jdwp[EI_FIELD_MODIFICATION -EI_min] = JDWP_EVENT(FIELD_MODIFICATION);
1946 index2jdwp[EI_EXCEPTION_CATCH -EI_min] = JDWP_EVENT(EXCEPTION_CATCH);
1947 index2jdwp[EI_METHOD_ENTRY -EI_min] = JDWP_EVENT(METHOD_ENTRY);
1948 index2jdwp[EI_METHOD_EXIT -EI_min] = JDWP_EVENT(METHOD_EXIT);
1949 index2jdwp[EI_MONITOR_CONTENDED_ENTER -EI_min] = JDWP_EVENT(MONITOR_CONTENDED_ENTER);
1950 index2jdwp[EI_MONITOR_CONTENDED_ENTERED -EI_min] = JDWP_EVENT(MONITOR_CONTENDED_ENTERED);
1951 index2jdwp[EI_MONITOR_WAIT -EI_min] = JDWP_EVENT(MONITOR_WAIT);
1952 index2jdwp[EI_MONITOR_WAITED -EI_min] = JDWP_EVENT(MONITOR_WAITED);
1953 index2jdwp[EI_VM_INIT -EI_min] = JDWP_EVENT(VM_INIT);
1954 index2jdwp[EI_VM_DEATH -EI_min] = JDWP_EVENT(VM_DEATH);
1955 /* Just map VIRTUAL_THREAD_START/END to THREAD_START/END. */
1956 index2jdwp[EI_VIRTUAL_THREAD_START -EI_min] = JDWP_EVENT(THREAD_START);
1957 index2jdwp[EI_VIRTUAL_THREAD_END -EI_min] = JDWP_EVENT(THREAD_END);
1958 }
1959
1960 jdwpEvent
1961 eventIndex2jdwp(EventIndex ei)
1962 {
1963 jdwpEvent event = 0;
1964 if (ei >= EI_min && ei <= EI_max) {
1965 event = index2jdwp[ei - EI_min];
1966 }
1967 if (event == 0) {
1968 EXIT_ERROR(AGENT_ERROR_INVALID_INDEX, "bad EventIndex");
1969 }
1970 return event;
1971 }
1972
1973 jvmtiEvent
1974 eventIndex2jvmti(EventIndex ei)
1975 {
1976 jvmtiEvent event = 0;
1977 if (ei >= EI_min && ei <= EI_max) {
1978 event = index2jvmti[ei - EI_min];
1979 }
1980 if (event == 0) {
1981 EXIT_ERROR(AGENT_ERROR_INVALID_INDEX, "bad EventIndex");
1982 }
1983 return event;
1984 }
1985
1986 #ifdef DEBUG
1987
1988 char*
1989 eventIndex2EventName(EventIndex ei)
1990 {
1991 switch ( ei ) {
1992 case EI_SINGLE_STEP:
1993 return "EI_SINGLE_STEP";
1994 case EI_BREAKPOINT:
1995 return "EI_BREAKPOINT";
1996 case EI_FRAME_POP:
1997 return "EI_FRAME_POP";
1998 case EI_EXCEPTION:
1999 return "EI_EXCEPTION";
2000 case EI_THREAD_START:
2001 return "EI_THREAD_START";
2002 case EI_THREAD_END:
2003 return "EI_THREAD_END";
2004 case EI_CLASS_PREPARE:
2005 return "EI_CLASS_PREPARE";
2006 case EI_CLASS_UNLOAD:
2007 return "EI_CLASS_UNLOAD";
2008 case EI_CLASS_LOAD:
2009 return "EI_CLASS_LOAD";
2010 case EI_FIELD_ACCESS:
2011 return "EI_FIELD_ACCESS";
2012 case EI_FIELD_MODIFICATION:
2013 return "EI_FIELD_MODIFICATION";
2014 case EI_EXCEPTION_CATCH:
2015 return "EI_EXCEPTION_CATCH";
2016 case EI_METHOD_ENTRY:
2017 return "EI_METHOD_ENTRY";
2018 case EI_METHOD_EXIT:
2019 return "EI_METHOD_EXIT";
2020 case EI_MONITOR_CONTENDED_ENTER:
2021 return "EI_MONITOR_CONTENDED_ENTER";
2022 case EI_MONITOR_CONTENDED_ENTERED:
2023 return "EI_MONITOR_CONTENDED_ENTERED";
2024 case EI_MONITOR_WAIT:
2025 return "EI_MONITOR_WAIT";
2026 case EI_MONITOR_WAITED:
2027 return "EI_MONITOR_WAITED";
2028 case EI_VM_INIT:
2029 return "EI_VM_INIT";
2030 case EI_VM_DEATH:
2031 return "EI_VM_DEATH";
2032 case EI_VIRTUAL_THREAD_START:
2033 return "EI_VIRTUAL_THREAD_START";
2034 case EI_VIRTUAL_THREAD_END:
2035 return "EI_VIRTUAL_THREAD_END";
2036 default:
2037 JDI_ASSERT(JNI_FALSE);
2038 return "Bad EI";
2039 }
2040 }
2041
2042 #endif
2043
2044 EventIndex
2045 jdwp2EventIndex(jdwpEvent eventType)
2046 {
2047 switch ( eventType ) {
2048 case JDWP_EVENT(SINGLE_STEP):
2049 return EI_SINGLE_STEP;
2050 case JDWP_EVENT(BREAKPOINT):
2051 return EI_BREAKPOINT;
2052 case JDWP_EVENT(FRAME_POP):
2053 return EI_FRAME_POP;
2054 case JDWP_EVENT(EXCEPTION):
2055 return EI_EXCEPTION;
2056 case JDWP_EVENT(THREAD_START):
2057 return EI_THREAD_START;
2058 case JDWP_EVENT(THREAD_END):
2059 return EI_THREAD_END;
2060 case JDWP_EVENT(CLASS_PREPARE):
2061 return EI_CLASS_PREPARE;
2062 case JDWP_EVENT(CLASS_UNLOAD):
2063 return EI_CLASS_UNLOAD;
2064 case JDWP_EVENT(CLASS_LOAD):
2065 return EI_CLASS_LOAD;
2066 case JDWP_EVENT(FIELD_ACCESS):
2067 return EI_FIELD_ACCESS;
2068 case JDWP_EVENT(FIELD_MODIFICATION):
2069 return EI_FIELD_MODIFICATION;
2070 case JDWP_EVENT(EXCEPTION_CATCH):
2071 return EI_EXCEPTION_CATCH;
2072 case JDWP_EVENT(METHOD_ENTRY):
2073 return EI_METHOD_ENTRY;
2074 case JDWP_EVENT(METHOD_EXIT):
2075 return EI_METHOD_EXIT;
2076 case JDWP_EVENT(METHOD_EXIT_WITH_RETURN_VALUE):
2077 return EI_METHOD_EXIT;
2078 case JDWP_EVENT(MONITOR_CONTENDED_ENTER):
2079 return EI_MONITOR_CONTENDED_ENTER;
2080 case JDWP_EVENT(MONITOR_CONTENDED_ENTERED):
2081 return EI_MONITOR_CONTENDED_ENTERED;
2082 case JDWP_EVENT(MONITOR_WAIT):
2083 return EI_MONITOR_WAIT;
2084 case JDWP_EVENT(MONITOR_WAITED):
2085 return EI_MONITOR_WAITED;
2086 case JDWP_EVENT(VM_INIT):
2087 return EI_VM_INIT;
2088 case JDWP_EVENT(VM_DEATH):
2089 return EI_VM_DEATH;
2090 default:
2091 break;
2092 }
2093
2094 /*
2095 * Event type not recognized - don't exit with error as caller
2096 * may wish to return error to debugger.
2097 */
2098 return (EventIndex)0;
2099 }
2100
2101 EventIndex
2102 jvmti2EventIndex(jvmtiEvent kind)
2103 {
2104 switch ( kind ) {
2105 case JVMTI_EVENT_SINGLE_STEP:
2106 return EI_SINGLE_STEP;
2107 case JVMTI_EVENT_BREAKPOINT:
2108 return EI_BREAKPOINT;
2109 case JVMTI_EVENT_FRAME_POP:
2110 return EI_FRAME_POP;
2111 case JVMTI_EVENT_EXCEPTION:
2112 return EI_EXCEPTION;
2113 case JVMTI_EVENT_THREAD_START:
2114 return EI_THREAD_START;
2115 case JVMTI_EVENT_THREAD_END:
2116 return EI_THREAD_END;
2117 case JVMTI_EVENT_CLASS_PREPARE:
2118 return EI_CLASS_PREPARE;
2119 case JVMTI_EVENT_CLASS_LOAD:
2120 return EI_CLASS_LOAD;
2121 case JVMTI_EVENT_FIELD_ACCESS:
2122 return EI_FIELD_ACCESS;
2123 case JVMTI_EVENT_FIELD_MODIFICATION:
2124 return EI_FIELD_MODIFICATION;
2125 case JVMTI_EVENT_EXCEPTION_CATCH:
2126 return EI_EXCEPTION_CATCH;
2127 case JVMTI_EVENT_METHOD_ENTRY:
2128 return EI_METHOD_ENTRY;
2129 case JVMTI_EVENT_METHOD_EXIT:
2130 return EI_METHOD_EXIT;
2131 /*
2132 * There is no JVMTI_EVENT_METHOD_EXIT_WITH_RETURN_VALUE.
2133 * The normal JVMTI_EVENT_METHOD_EXIT always contains the return value.
2134 */
2135 case JVMTI_EVENT_MONITOR_CONTENDED_ENTER:
2136 return EI_MONITOR_CONTENDED_ENTER;
2137 case JVMTI_EVENT_MONITOR_CONTENDED_ENTERED:
2138 return EI_MONITOR_CONTENDED_ENTERED;
2139 case JVMTI_EVENT_MONITOR_WAIT:
2140 return EI_MONITOR_WAIT;
2141 case JVMTI_EVENT_MONITOR_WAITED:
2142 return EI_MONITOR_WAITED;
2143 case JVMTI_EVENT_VM_INIT:
2144 return EI_VM_INIT;
2145 case JVMTI_EVENT_VM_DEATH:
2146 return EI_VM_DEATH;
2147 /* vthread events */
2148 case JVMTI_EVENT_VIRTUAL_THREAD_START:
2149 return EI_VIRTUAL_THREAD_START;
2150 case JVMTI_EVENT_VIRTUAL_THREAD_END:
2151 return EI_VIRTUAL_THREAD_END;
2152
2153 default:
2154 EXIT_ERROR(AGENT_ERROR_INVALID_INDEX,"JVMTI to EventIndex mapping");
2155 break;
2156 }
2157 return (EventIndex)0;
2158 }
2159
2160 /* This routine is commonly used, maps jvmti and agent errors to the best
2161 * jdwp error code we can map to.
2162 */
2163 jdwpError
2164 map2jdwpError(jvmtiError error)
2165 {
2166 switch ( (int)error ) {
2167 case JVMTI_ERROR_NONE:
2168 return JDWP_ERROR(NONE);
2169 case AGENT_ERROR_INVALID_THREAD:
2170 case JVMTI_ERROR_INVALID_THREAD:
2171 return JDWP_ERROR(INVALID_THREAD);
2172 case JVMTI_ERROR_INVALID_THREAD_GROUP:
2173 return JDWP_ERROR(INVALID_THREAD_GROUP);
2174 case JVMTI_ERROR_INVALID_PRIORITY:
2175 return JDWP_ERROR(INVALID_PRIORITY);
2176 case JVMTI_ERROR_THREAD_NOT_SUSPENDED:
2177 return JDWP_ERROR(THREAD_NOT_SUSPENDED);
2178 case JVMTI_ERROR_THREAD_SUSPENDED:
2179 return JDWP_ERROR(THREAD_SUSPENDED);
2180 case JVMTI_ERROR_THREAD_NOT_ALIVE:
2181 return JDWP_ERROR(INVALID_THREAD);
2182 case AGENT_ERROR_INVALID_OBJECT:
2183 case JVMTI_ERROR_INVALID_OBJECT:
2184 return JDWP_ERROR(INVALID_OBJECT);
2185 case JVMTI_ERROR_INVALID_CLASS:
2186 return JDWP_ERROR(INVALID_CLASS);
2187 case JVMTI_ERROR_CLASS_NOT_PREPARED:
2188 return JDWP_ERROR(CLASS_NOT_PREPARED);
2189 case JVMTI_ERROR_INVALID_METHODID:
2190 return JDWP_ERROR(INVALID_METHODID);
2191 case JVMTI_ERROR_INVALID_LOCATION:
2192 return JDWP_ERROR(INVALID_LOCATION);
2193 case JVMTI_ERROR_INVALID_FIELDID:
2194 return JDWP_ERROR(INVALID_FIELDID);
2195 case AGENT_ERROR_NO_MORE_FRAMES:
2196 case JVMTI_ERROR_NO_MORE_FRAMES:
2197 return JDWP_ERROR(NO_MORE_FRAMES);
2198 case JVMTI_ERROR_OPAQUE_FRAME:
2199 return JDWP_ERROR(OPAQUE_FRAME);
2200 case JVMTI_ERROR_TYPE_MISMATCH:
2201 return JDWP_ERROR(TYPE_MISMATCH);
2202 case JVMTI_ERROR_INVALID_SLOT:
2203 return JDWP_ERROR(INVALID_SLOT);
2204 case JVMTI_ERROR_DUPLICATE:
2205 return JDWP_ERROR(DUPLICATE);
2206 case JVMTI_ERROR_NOT_FOUND:
2207 return JDWP_ERROR(NOT_FOUND);
2208 case JVMTI_ERROR_INVALID_MONITOR:
2209 return JDWP_ERROR(INVALID_MONITOR);
2210 case JVMTI_ERROR_NOT_MONITOR_OWNER:
2211 return JDWP_ERROR(NOT_MONITOR_OWNER);
2212 case JVMTI_ERROR_INTERRUPT:
2213 return JDWP_ERROR(INTERRUPT);
2214 case JVMTI_ERROR_INVALID_CLASS_FORMAT:
2215 return JDWP_ERROR(INVALID_CLASS_FORMAT);
2216 case JVMTI_ERROR_CIRCULAR_CLASS_DEFINITION:
2217 return JDWP_ERROR(CIRCULAR_CLASS_DEFINITION);
2218 case JVMTI_ERROR_FAILS_VERIFICATION:
2219 return JDWP_ERROR(FAILS_VERIFICATION);
2220 case JVMTI_ERROR_INVALID_TYPESTATE:
2221 return JDWP_ERROR(INVALID_TYPESTATE);
2222 case JVMTI_ERROR_UNSUPPORTED_VERSION:
2223 return JDWP_ERROR(UNSUPPORTED_VERSION);
2224 case JVMTI_ERROR_NAMES_DONT_MATCH:
2225 return JDWP_ERROR(NAMES_DONT_MATCH);
2226 case AGENT_ERROR_NULL_POINTER:
2227 case JVMTI_ERROR_NULL_POINTER:
2228 return JDWP_ERROR(NULL_POINTER);
2229 case JVMTI_ERROR_ABSENT_INFORMATION:
2230 return JDWP_ERROR(ABSENT_INFORMATION);
2231 case AGENT_ERROR_INVALID_EVENT_TYPE:
2232 case JVMTI_ERROR_INVALID_EVENT_TYPE:
2233 return JDWP_ERROR(INVALID_EVENT_TYPE);
2234 case AGENT_ERROR_ILLEGAL_ARGUMENT:
2235 case JVMTI_ERROR_ILLEGAL_ARGUMENT:
2236 return JDWP_ERROR(ILLEGAL_ARGUMENT);
2237 case JVMTI_ERROR_OUT_OF_MEMORY:
2238 case AGENT_ERROR_OUT_OF_MEMORY:
2239 return JDWP_ERROR(OUT_OF_MEMORY);
2240 case JVMTI_ERROR_ACCESS_DENIED:
2241 return JDWP_ERROR(ACCESS_DENIED);
2242 case JVMTI_ERROR_WRONG_PHASE:
2243 case AGENT_ERROR_VM_DEAD:
2244 case AGENT_ERROR_NO_JNI_ENV:
2245 return JDWP_ERROR(VM_DEAD);
2246 case AGENT_ERROR_JNI_EXCEPTION:
2247 case JVMTI_ERROR_UNATTACHED_THREAD:
2248 return JDWP_ERROR(UNATTACHED_THREAD);
2249 case JVMTI_ERROR_NOT_AVAILABLE:
2250 case JVMTI_ERROR_MUST_POSSESS_CAPABILITY:
2251 return JDWP_ERROR(NOT_IMPLEMENTED);
2252 case JVMTI_ERROR_UNSUPPORTED_REDEFINITION_HIERARCHY_CHANGED:
2253 return JDWP_ERROR(HIERARCHY_CHANGE_NOT_IMPLEMENTED);
2254 case JVMTI_ERROR_UNSUPPORTED_REDEFINITION_METHOD_DELETED:
2255 return JDWP_ERROR(DELETE_METHOD_NOT_IMPLEMENTED);
2256 case JVMTI_ERROR_UNSUPPORTED_REDEFINITION_METHOD_ADDED:
2257 return JDWP_ERROR(ADD_METHOD_NOT_IMPLEMENTED);
2258 case JVMTI_ERROR_UNSUPPORTED_REDEFINITION_SCHEMA_CHANGED:
2259 return JDWP_ERROR(SCHEMA_CHANGE_NOT_IMPLEMENTED);
2260 case JVMTI_ERROR_UNSUPPORTED_REDEFINITION_CLASS_MODIFIERS_CHANGED:
2261 return JDWP_ERROR(CLASS_MODIFIERS_CHANGE_NOT_IMPLEMENTED);
2262 case JVMTI_ERROR_UNSUPPORTED_REDEFINITION_METHOD_MODIFIERS_CHANGED:
2263 return JDWP_ERROR(METHOD_MODIFIERS_CHANGE_NOT_IMPLEMENTED);
2264 case JVMTI_ERROR_UNSUPPORTED_REDEFINITION_CLASS_ATTRIBUTE_CHANGED:
2265 return JDWP_ERROR(CLASS_ATTRIBUTE_CHANGE_NOT_IMPLEMENTED);
2266 case JVMTI_ERROR_UNSUPPORTED_OPERATION:
2267 return JDWP_ERROR(NOT_IMPLEMENTED);
2268 case AGENT_ERROR_NOT_CURRENT_FRAME:
2269 return JDWP_ERROR(NOT_CURRENT_FRAME);
2270 case AGENT_ERROR_INVALID_TAG:
2271 return JDWP_ERROR(INVALID_TAG);
2272 case AGENT_ERROR_ALREADY_INVOKING:
2273 return JDWP_ERROR(ALREADY_INVOKING);
2274 case AGENT_ERROR_INVALID_INDEX:
2275 return JDWP_ERROR(INVALID_INDEX);
2276 case AGENT_ERROR_INVALID_LENGTH:
2277 return JDWP_ERROR(INVALID_LENGTH);
2278 case AGENT_ERROR_INVALID_STRING:
2279 return JDWP_ERROR(INVALID_STRING);
2280 case AGENT_ERROR_INVALID_CLASS_LOADER:
2281 return JDWP_ERROR(INVALID_CLASS_LOADER);
2282 case AGENT_ERROR_INVALID_ARRAY:
2283 return JDWP_ERROR(INVALID_ARRAY);
2284 case AGENT_ERROR_TRANSPORT_LOAD:
2285 return JDWP_ERROR(TRANSPORT_LOAD);
2286 case AGENT_ERROR_TRANSPORT_INIT:
2287 return JDWP_ERROR(TRANSPORT_INIT);
2288 case AGENT_ERROR_NATIVE_METHOD:
2289 return JDWP_ERROR(NATIVE_METHOD);
2290 case AGENT_ERROR_INVALID_COUNT:
2291 return JDWP_ERROR(INVALID_COUNT);
2292 case AGENT_ERROR_INVALID_FRAMEID:
2293 return JDWP_ERROR(INVALID_FRAMEID);
2294 case JVMTI_ERROR_INTERNAL:
2295 case JVMTI_ERROR_INVALID_ENVIRONMENT:
2296 case AGENT_ERROR_INTERNAL:
2297 case AGENT_ERROR_JVMTI_INTERNAL:
2298 case AGENT_ERROR_JDWP_INTERNAL:
2299 return JDWP_ERROR(INTERNAL);
2300 default:
2301 break;
2302 }
2303 return JDWP_ERROR(INTERNAL);
2304 }
2305
2306 jint
2307 map2jdwpSuspendStatus(jint state)
2308 {
2309 jint status = 0;
2310 if ( ( state & JVMTI_THREAD_STATE_SUSPENDED ) != 0 ) {
2311 status = JDWP_SUSPEND_STATUS(SUSPENDED);
2312 }
2313 return status;
2314 }
2315
2316 jdwpThreadStatus
2317 map2jdwpThreadStatus(jint state)
2318 {
2319 jdwpThreadStatus status;
2320
2321 status = (jdwpThreadStatus)(-1);
2322
2323 if ( ! ( state & JVMTI_THREAD_STATE_ALIVE ) ) {
2324 if ( state & JVMTI_THREAD_STATE_TERMINATED ) {
2325 status = JDWP_THREAD_STATUS(ZOMBIE);
2326 } else {
2327 /* FIXUP? New JDWP #define for not started? */
2328 status = (jdwpThreadStatus)(-1);
2329 }
2330 } else {
2331 if ( state & JVMTI_THREAD_STATE_SLEEPING ) {
2332 status = JDWP_THREAD_STATUS(SLEEPING);
2333 } else if ( state & JVMTI_THREAD_STATE_BLOCKED_ON_MONITOR_ENTER ) {
2334 status = JDWP_THREAD_STATUS(MONITOR);
2335 } else if ( state & JVMTI_THREAD_STATE_WAITING ) {
2336 status = JDWP_THREAD_STATUS(WAIT);
2337 } else if ( state & JVMTI_THREAD_STATE_RUNNABLE ) {
2338 status = JDWP_THREAD_STATUS(RUNNING);
2339 }
2340 }
2341 return status;
2342 }
2343
2344 jint
2345 map2jdwpClassStatus(jint classStatus)
2346 {
2347 jint status = 0;
2348 if ( ( classStatus & JVMTI_CLASS_STATUS_VERIFIED ) != 0 ) {
2349 status |= JDWP_CLASS_STATUS(VERIFIED);
2350 }
2351 if ( ( classStatus & JVMTI_CLASS_STATUS_PREPARED ) != 0 ) {
2352 status |= JDWP_CLASS_STATUS(PREPARED);
2353 }
2354 if ( ( classStatus & JVMTI_CLASS_STATUS_INITIALIZED ) != 0 ) {
2355 status |= JDWP_CLASS_STATUS(INITIALIZED);
2356 }
2357 if ( ( classStatus & JVMTI_CLASS_STATUS_ERROR ) != 0 ) {
2358 status |= JDWP_CLASS_STATUS(ERROR);
2359 }
2360 return status;
2361 }
2362
2363 void
2364 log_debugee_location(const char *func,
2365 jthread thread, jmethodID method, jlocation location)
2366 {
2367 int logging_locations = LOG_TEST(JDWP_LOG_LOC);
2368
2369 if ( logging_locations ) {
2370 char *method_name;
2371 char *class_sig;
2372 jvmtiError error;
2373 jvmtiThreadInfo info;
2374 jint state;
2375
2376 /* Get thread information */
2377 info.name = NULL;
2378 error = FUNC_PTR(gdata->jvmti,GetThreadInfo)
2379 (gdata->jvmti, thread, &info);
2380 if ( error != JVMTI_ERROR_NONE) {
2381 info.name = NULL;
2382 }
2383 error = FUNC_PTR(gdata->jvmti,GetThreadState)
2384 (gdata->jvmti, thread, &state);
2385 if ( error != JVMTI_ERROR_NONE) {
2386 state = 0;
2387 }
2388
2389 /* Get method if necessary */
2390 if ( method==NULL ) {
2391 error = FUNC_PTR(gdata->jvmti,GetFrameLocation)
2392 (gdata->jvmti, thread, 0, &method, &location);
2393 if ( error != JVMTI_ERROR_NONE ) {
2394 method = NULL;
2395 location = 0;
2396 }
2397 }
2398
2399 /* Get method name */
2400 method_name = NULL;
2401 if ( method != NULL ) {
2402 error = methodSignature(method, &method_name, NULL, NULL);
2403 if ( error != JVMTI_ERROR_NONE ) {
2404 method_name = NULL;
2405 }
2406 }
2407
2408 /* Get class signature */
2409 class_sig = NULL;
2410 if ( method != NULL ) {
2411 jclass clazz;
2412
2413 error = methodClass(method, &clazz);
2414 if ( error == JVMTI_ERROR_NONE ) {
2415 error = classSignature(clazz, &class_sig, NULL);
2416 if ( error != JVMTI_ERROR_NONE ) {
2417 class_sig = NULL;
2418 }
2419 }
2420 }
2421
2422 /* Issue log message */
2423 LOG_LOC(("%s: debuggee: thread=%p(%s:0x%x),method=%p(%s@%d;%s)",
2424 func,
2425 thread, info.name==NULL ? "?" : info.name, state,
2426 method, method_name==NULL ? "?" : method_name,
2427 (int)location, class_sig==NULL ? "?" : class_sig));
2428
2429 /* Free memory */
2430 if ( class_sig != NULL ) {
2431 jvmtiDeallocate(class_sig);
2432 }
2433 if ( method_name != NULL ) {
2434 jvmtiDeallocate(method_name);
2435 }
2436 if ( info.name != NULL ) {
2437 jvmtiDeallocate(info.name);
2438 }
2439 }
2440 }
2441
2442 /* ********************************************************************* */
2443 /* JDK 6.0: Use of new Heap Iteration functions */
2444 /* ********************************************************************* */
2445
2446 /* ********************************************************************* */
2447 /* Instances */
2448
2449 /* Structure to hold class instances heap iteration data (arg user_data) */
2450 typedef struct ClassInstancesData {
2451 jint instCount;
2452 jint maxInstances;
2453 jlong objTag;
2454 jvmtiError error;
2455 } ClassInstancesData;
2456
2457 /* Callback for instance object tagging (heap_reference_callback). */
2458 static jint JNICALL
2459 cbObjectTagInstance(jvmtiHeapReferenceKind reference_kind,
2460 const jvmtiHeapReferenceInfo* reference_info, jlong class_tag,
2461 jlong referrer_class_tag, jlong size,
2462 jlong* tag_ptr, jlong* referrer_tag_ptr, jint length, void* user_data)
2463 {
2464 ClassInstancesData *data;
2465
2466 /* Check data structure */
2467 data = (ClassInstancesData*)user_data;
2468 if (data == NULL) {
2469 return JVMTI_VISIT_ABORT;
2470 }
2471
2472 /* If we have tagged enough objects, just abort */
2473 if ( data->maxInstances != 0 && data->instCount >= data->maxInstances ) {
2474 return JVMTI_VISIT_ABORT;
2475 }
2476
2477 /* If tagged already, just continue */
2478 if ( (*tag_ptr) != (jlong)0 ) {
2479 return JVMTI_VISIT_OBJECTS;
2480 }
2481
2482 /* Tag the object so we don't count it again, and so we can retrieve it */
2483 (*tag_ptr) = data->objTag;
2484 data->instCount++;
2485 return JVMTI_VISIT_OBJECTS;
2486 }
2487
2488 /* Get instances for one class */
2489 jvmtiError
2490 classInstances(jclass klass, ObjectBatch *instances, int maxInstances)
2491 {
2492 ClassInstancesData data;
2493 jvmtiHeapCallbacks heap_callbacks;
2494 jvmtiError error;
2495 jvmtiEnv *jvmti;
2496
2497 /* Check interface assumptions */
2498
2499 if (klass == NULL) {
2500 return AGENT_ERROR_INVALID_OBJECT;
2501 }
2502
2503 if ( maxInstances < 0 || instances == NULL) {
2504 return AGENT_ERROR_ILLEGAL_ARGUMENT;
2505 }
2506
2507 /* Initialize return information */
2508 instances->count = 0;
2509 instances->objects = NULL;
2510
2511 /* Get jvmti environment to use */
2512 jvmti = getSpecialJvmti();
2513 if ( jvmti == NULL ) {
2514 return AGENT_ERROR_INTERNAL;
2515 }
2516
2517 /* Setup data to passed around the callbacks */
2518 data.instCount = 0;
2519 data.maxInstances = maxInstances;
2520 data.objTag = (jlong)1;
2521 data.error = JVMTI_ERROR_NONE;
2522
2523 /* Clear out callbacks structure */
2524 (void)memset(&heap_callbacks,0,sizeof(heap_callbacks));
2525
2526 /* Set the callbacks we want */
2527 heap_callbacks.heap_reference_callback = &cbObjectTagInstance;
2528
2529 /* Follow references, no initiating object, just this class, all objects */
2530 error = JVMTI_FUNC_PTR(jvmti,FollowReferences)
2531 (jvmti, 0, klass, NULL, &heap_callbacks, &data);
2532 if ( error == JVMTI_ERROR_NONE ) {
2533 error = data.error;
2534 }
2535
2536 /* Get all the instances now that they are tagged */
2537 if ( error == JVMTI_ERROR_NONE ) {
2538 error = JVMTI_FUNC_PTR(jvmti,GetObjectsWithTags)
2539 (jvmti, 1, &(data.objTag), &(instances->count),
2540 &(instances->objects), NULL);
2541 /* Verify we got the count we expected */
2542 if ( data.instCount != instances->count ) {
2543 error = AGENT_ERROR_INTERNAL;
2544 }
2545 }
2546
2547 /* Dispose of any special jvmti environment */
2548 (void)JVMTI_FUNC_PTR(jvmti,DisposeEnvironment)(jvmti);
2549 return error;
2550 }
2551
2552 /* ********************************************************************* */
2553 /* Instance counts. */
2554
2555 /* Macros to convert a class or instance tag to an index and back again */
2556 #define INDEX2CLASSTAG(i) ((jlong)((i)+1))
2557 #define CLASSTAG2INDEX(t) (((int)(t))-1)
2558 #define JLONG_ABS(x) (((x)<(jlong)0)?-(x):(x))
2559
2560 /* Structure to hold class count heap traversal data (arg user_data) */
2561 typedef struct ClassCountData {
2562 int classCount;
2563 jlong *counts;
2564 jlong negObjTag;
2565 jvmtiError error;
2566 } ClassCountData;
2567
2568 /* Two different cbObjectCounter's, one for FollowReferences, one for
2569 * IterateThroughHeap. Pick a card, any card.
2570 */
2571
2572 /* Callback for object count heap traversal (heap_reference_callback) */
2573 static jint JNICALL
2574 cbObjectCounterFromRef(jvmtiHeapReferenceKind reference_kind,
2575 const jvmtiHeapReferenceInfo* reference_info, jlong class_tag,
2576 jlong referrer_class_tag, jlong size,
2577 jlong* tag_ptr, jlong* referrer_tag_ptr, jint length, void* user_data)
2578 {
2579 ClassCountData *data;
2580 int index;
2581 jlong jindex;
2582 jlong tag;
2583
2584 /* Check data structure */
2585 data = (ClassCountData*)user_data;
2586 if (data == NULL) {
2587 return JVMTI_VISIT_ABORT;
2588 }
2589
2590 /* Classes with no class_tag should have been filtered out. */
2591 if ( class_tag == (jlong)0 ) {
2592 data->error = AGENT_ERROR_INTERNAL;
2593 return JVMTI_VISIT_ABORT;
2594 }
2595
2596 /* Class tag not one we really want (jclass not in supplied list) */
2597 if ( class_tag == data->negObjTag ) {
2598 return JVMTI_VISIT_OBJECTS;
2599 }
2600
2601 /* If object tag is negative, just continue, we counted it */
2602 tag = (*tag_ptr);
2603 if ( tag < (jlong)0 ) {
2604 return JVMTI_VISIT_OBJECTS;
2605 }
2606
2607 /* Tag the object with a negative value just so we don't count it again */
2608 if ( tag == (jlong)0 ) {
2609 /* This object had no tag value, so we give it the negObjTag value */
2610 (*tag_ptr) = data->negObjTag;
2611 } else {
2612 /* If this object had a positive tag value, it must be one of the
2613 * jclass objects we tagged. We need to preserve the value of
2614 * this tag for later objects that might have this as a class
2615 * tag, so we just make the existing tag value negative.
2616 */
2617 (*tag_ptr) = -tag;
2618 }
2619
2620 /* Absolute value of class tag is an index into the counts[] array */
2621 jindex = JLONG_ABS(class_tag);
2622 index = CLASSTAG2INDEX(jindex);
2623 if (index < 0 || index >= data->classCount) {
2624 data->error = AGENT_ERROR_ILLEGAL_ARGUMENT;
2625 return JVMTI_VISIT_ABORT;
2626 }
2627
2628 /* Bump instance count on this class */
2629 data->counts[index]++;
2630 return JVMTI_VISIT_OBJECTS;
2631 }
2632
2633 /* Callback for instance count heap traversal (heap_iteration_callback) */
2634 static jint JNICALL
2635 cbObjectCounter(jlong class_tag, jlong size, jlong* tag_ptr, jint length,
2636 void* user_data)
2637 {
2638 ClassCountData *data;
2639 int index;
2640
2641 /* Check data structure */
2642 data = (ClassCountData*)user_data;
2643 if (data == NULL) {
2644 return JVMTI_VISIT_ABORT;
2645 }
2646
2647 /* Classes with no tag should be filtered out. */
2648 if ( class_tag == (jlong)0 ) {
2649 data->error = AGENT_ERROR_INTERNAL;
2650 return JVMTI_VISIT_ABORT;
2651 }
2652
2653 /* Class tag is actually an index into data arrays */
2654 index = CLASSTAG2INDEX(class_tag);
2655 if (index < 0 || index >= data->classCount) {
2656 data->error = AGENT_ERROR_ILLEGAL_ARGUMENT;
2657 return JVMTI_VISIT_ABORT;
2658 }
2659
2660 /* Bump instance count on this class */
2661 data->counts[index]++;
2662 return JVMTI_VISIT_OBJECTS;
2663 }
2664
2665 /* Get instance counts for a set of classes */
2666 jvmtiError
2667 classInstanceCounts(jint classCount, jclass *classes, jlong *counts)
2668 {
2669 jvmtiHeapCallbacks heap_callbacks;
2670 ClassCountData data;
2671 jvmtiError error;
2672 jvmtiEnv *jvmti;
2673 int i;
2674
2675 /* Check interface assumptions */
2676 if ( classes == NULL || classCount <= 0 || counts == NULL ) {
2677 return AGENT_ERROR_ILLEGAL_ARGUMENT;
2678 }
2679
2680 /* Initialize return information */
2681 for ( i = 0 ; i < classCount ; i++ ) {
2682 counts[i] = (jlong)0;
2683 }
2684
2685 /* Get jvmti environment to use */
2686 jvmti = getSpecialJvmti();
2687 if ( jvmti == NULL ) {
2688 return AGENT_ERROR_INTERNAL;
2689 }
2690
2691 /* Setup class data structure */
2692 data.error = JVMTI_ERROR_NONE;
2693 data.classCount = classCount;
2694 data.counts = counts;
2695
2696 error = JVMTI_ERROR_NONE;
2697 /* Set tags on classes, use index in classes[] as the tag value. */
2698 error = JVMTI_ERROR_NONE;
2699 for ( i = 0 ; i < classCount ; i++ ) {
2700 if (classes[i] != NULL) {
2701 jlong tag;
2702
2703 tag = INDEX2CLASSTAG(i);
2704 error = JVMTI_FUNC_PTR(jvmti,SetTag) (jvmti, classes[i], tag);
2705 if ( error != JVMTI_ERROR_NONE ) {
2706 break;
2707 }
2708 }
2709 }
2710
2711 /* Traverse heap, two ways to do this for instance counts. */
2712 if ( error == JVMTI_ERROR_NONE ) {
2713
2714 /* Clear out callbacks structure */
2715 (void)memset(&heap_callbacks,0,sizeof(heap_callbacks));
2716
2717 /* Check debug flags to see how to do this. */
2718 if ( (gdata->debugflags & USE_ITERATE_THROUGH_HEAP) == 0 ) {
2719
2720 /* Using FollowReferences only gives us live objects, but we
2721 * need to tag the objects to avoid counting them twice since
2722 * the callback is per reference.
2723 * The jclass objects have been tagged with their index in the
2724 * supplied list, and that tag may flip to negative if it
2725 * is also an object of interest.
2726 * All other objects being counted that weren't in the
2727 * supplied classes list will have a negative classCount
2728 * tag value. So all objects counted will have negative tags.
2729 * If the absolute tag value is an index in the supplied
2730 * list, then it's one of the supplied classes.
2731 */
2732 data.negObjTag = -INDEX2CLASSTAG(classCount);
2733
2734 /* Setup callbacks, only using object reference callback */
2735 heap_callbacks.heap_reference_callback = &cbObjectCounterFromRef;
2736
2737 /* Follow references, no initiating object, tagged classes only */
2738 error = JVMTI_FUNC_PTR(jvmti,FollowReferences)
2739 (jvmti, JVMTI_HEAP_FILTER_CLASS_UNTAGGED,
2740 NULL, NULL, &heap_callbacks, &data);
2741
2742 } else {
2743
2744 /* Using IterateThroughHeap means that we will visit each object
2745 * once, so no special tag tricks here. Just simple counting.
2746 * However in this case the object might not be live, so we do
2747 * a GC beforehand to make sure we minimize this.
2748 */
2749
2750 /* FIXUP: Need some kind of trigger here to avoid excessive GC's? */
2751 error = JVMTI_FUNC_PTR(jvmti,ForceGarbageCollection)(jvmti);
2752 if ( error != JVMTI_ERROR_NONE ) {
2753
2754 /* Setup callbacks, just need object callback */
2755 heap_callbacks.heap_iteration_callback = &cbObjectCounter;
2756
2757 /* Iterate through entire heap, tagged classes only */
2758 error = JVMTI_FUNC_PTR(jvmti,IterateThroughHeap)
2759 (jvmti, JVMTI_HEAP_FILTER_CLASS_UNTAGGED,
2760 NULL, &heap_callbacks, &data);
2761
2762 }
2763 }
2764
2765 /* Use data error if needed */
2766 if ( error == JVMTI_ERROR_NONE ) {
2767 error = data.error;
2768 }
2769
2770 }
2771
2772 /* Dispose of any special jvmti environment */
2773 (void)JVMTI_FUNC_PTR(jvmti,DisposeEnvironment)(jvmti);
2774 return error;
2775 }
2776
2777 /* ********************************************************************* */
2778 /* Referrers */
2779
2780 /* Structure to hold object referrer heap traversal data (arg user_data) */
2781 typedef struct ReferrerData {
2782 int refCount;
2783 int maxObjects;
2784 jlong refTag;
2785 jlong objTag;
2786 jboolean selfRef;
2787 jvmtiError error;
2788 } ReferrerData;
2789
2790 /* Callback for referrers object tagging (heap_reference_callback). */
2791 static jint JNICALL
2792 cbObjectTagReferrer(jvmtiHeapReferenceKind reference_kind,
2793 const jvmtiHeapReferenceInfo* reference_info, jlong class_tag,
2794 jlong referrer_class_tag, jlong size,
2795 jlong* tag_ptr, jlong* referrer_tag_ptr, jint length, void* user_data)
2796 {
2797 ReferrerData *data;
2798
2799 /* Check data structure */
2800 data = (ReferrerData*)user_data;
2801 if (data == NULL) {
2802 return JVMTI_VISIT_ABORT;
2803 }
2804
2805 /* If we have tagged enough objects, just abort */
2806 if ( data->maxObjects != 0 && data->refCount >= data->maxObjects ) {
2807 return JVMTI_VISIT_ABORT;
2808 }
2809
2810 /* If not of interest, just continue */
2811 if ( (*tag_ptr) != data->objTag ) {
2812 return JVMTI_VISIT_OBJECTS;
2813 }
2814
2815 /* Self reference that we haven't counted? */
2816 if ( tag_ptr == referrer_tag_ptr ) {
2817 if ( data->selfRef == JNI_FALSE ) {
2818 data->selfRef = JNI_TRUE;
2819 data->refCount++;
2820 }
2821 return JVMTI_VISIT_OBJECTS;
2822 }
2823
2824 /* If the referrer can be tagged, and hasn't been tagged, tag it */
2825 if ( referrer_tag_ptr != NULL ) {
2826 if ( (*referrer_tag_ptr) == (jlong)0 ) {
2827 *referrer_tag_ptr = data->refTag;
2828 data->refCount++;
2829 }
2830 }
2831 return JVMTI_VISIT_OBJECTS;
2832 }
2833
2834 /* Heap traversal to find referrers of an object */
2835 jvmtiError
2836 objectReferrers(jobject obj, ObjectBatch *referrers, int maxObjects)
2837 {
2838 jvmtiHeapCallbacks heap_callbacks;
2839 ReferrerData data;
2840 jvmtiError error;
2841 jvmtiEnv *jvmti;
2842
2843 /* Check interface assumptions */
2844 if (obj == NULL) {
2845 return AGENT_ERROR_INVALID_OBJECT;
2846 }
2847 if (referrers == NULL || maxObjects < 0 ) {
2848 return AGENT_ERROR_ILLEGAL_ARGUMENT;
2849 }
2850
2851 /* Initialize return information */
2852 referrers->count = 0;
2853 referrers->objects = NULL;
2854
2855 /* Get jvmti environment to use */
2856 jvmti = getSpecialJvmti();
2857 if ( jvmti == NULL ) {
2858 return AGENT_ERROR_INTERNAL;
2859 }
2860
2861 /* Fill in the data structure passed around the callbacks */
2862 data.refCount = 0;
2863 data.maxObjects = maxObjects;
2864 data.objTag = (jlong)1;
2865 data.refTag = (jlong)2;
2866 data.selfRef = JNI_FALSE;
2867 data.error = JVMTI_ERROR_NONE;
2868
2869 /* Tag the object of interest */
2870 error = JVMTI_FUNC_PTR(jvmti,SetTag) (jvmti, obj, data.objTag);
2871
2872 /* No need to go any further if we can't tag the object */
2873 if ( error == JVMTI_ERROR_NONE ) {
2874
2875 /* Clear out callbacks structure */
2876 (void)memset(&heap_callbacks,0,sizeof(heap_callbacks));
2877
2878 /* Setup callbacks we want */
2879 heap_callbacks.heap_reference_callback = &cbObjectTagReferrer;
2880
2881 /* Follow references, no initiating object, all classes, 1 tagged objs */
2882 error = JVMTI_FUNC_PTR(jvmti,FollowReferences)
2883 (jvmti, JVMTI_HEAP_FILTER_UNTAGGED,
2884 NULL, NULL, &heap_callbacks, &data);
2885
2886 /* Use data error if needed */
2887 if ( error == JVMTI_ERROR_NONE ) {
2888 error = data.error;
2889 }
2890
2891 }
2892
2893 /* Watch out for self-reference */
2894 if ( error == JVMTI_ERROR_NONE && data.selfRef == JNI_TRUE ) {
2895 /* Tag itself as a referer */
2896 error = JVMTI_FUNC_PTR(jvmti,SetTag) (jvmti, obj, data.refTag);
2897 }
2898
2899 /* Get the jobjects for the tagged referrer objects. */
2900 if ( error == JVMTI_ERROR_NONE ) {
2901 error = JVMTI_FUNC_PTR(jvmti,GetObjectsWithTags)
2902 (jvmti, 1, &(data.refTag), &(referrers->count),
2903 &(referrers->objects), NULL);
2904 /* Verify we got the count we expected */
2905 if ( data.refCount != referrers->count ) {
2906 error = AGENT_ERROR_INTERNAL;
2907 }
2908 }
2909
2910 /* Dispose of any special jvmti environment */
2911 (void)JVMTI_FUNC_PTR(jvmti,DisposeEnvironment)(jvmti);
2912 return error;
2913 }
--- EOF ---