39 #include "prims/jvmtiImpl.hpp" |
39 #include "prims/jvmtiImpl.hpp" |
40 #include "prims/jvmtiManageCapabilities.hpp" |
40 #include "prims/jvmtiManageCapabilities.hpp" |
41 #include "prims/jvmtiRawMonitor.hpp" |
41 #include "prims/jvmtiRawMonitor.hpp" |
42 #include "prims/jvmtiTagMap.hpp" |
42 #include "prims/jvmtiTagMap.hpp" |
43 #include "prims/jvmtiThreadState.inline.hpp" |
43 #include "prims/jvmtiThreadState.inline.hpp" |
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44 #include "prims/jvmtiRedefineClasses.hpp" |
44 #include "runtime/arguments.hpp" |
45 #include "runtime/arguments.hpp" |
45 #include "runtime/handles.hpp" |
46 #include "runtime/handles.hpp" |
46 #include "runtime/interfaceSupport.hpp" |
47 #include "runtime/interfaceSupport.hpp" |
47 #include "runtime/objectMonitor.hpp" |
48 #include "runtime/objectMonitor.hpp" |
48 #include "runtime/objectMonitor.inline.hpp" |
49 #include "runtime/objectMonitor.inline.hpp" |
514 unsigned char ** _end_ptr; |
515 unsigned char ** _end_ptr; |
515 JavaThread * _thread; |
516 JavaThread * _thread; |
516 jint _curr_len; |
517 jint _curr_len; |
517 unsigned char * _curr_data; |
518 unsigned char * _curr_data; |
518 JvmtiEnv * _curr_env; |
519 JvmtiEnv * _curr_env; |
519 jint * _cached_length_ptr; |
520 JvmtiCachedClassFileData ** _cached_class_file_ptr; |
520 unsigned char ** _cached_data_ptr; |
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521 JvmtiThreadState * _state; |
521 JvmtiThreadState * _state; |
522 KlassHandle * _h_class_being_redefined; |
522 KlassHandle * _h_class_being_redefined; |
523 JvmtiClassLoadKind _load_kind; |
523 JvmtiClassLoadKind _load_kind; |
524 |
524 |
525 public: |
525 public: |
526 inline JvmtiClassFileLoadHookPoster(Symbol* h_name, Handle class_loader, |
526 inline JvmtiClassFileLoadHookPoster(Symbol* h_name, Handle class_loader, |
527 Handle h_protection_domain, |
527 Handle h_protection_domain, |
528 unsigned char **data_ptr, unsigned char **end_ptr, |
528 unsigned char **data_ptr, unsigned char **end_ptr, |
529 unsigned char **cached_data_ptr, |
529 JvmtiCachedClassFileData **cache_ptr) { |
530 jint *cached_length_ptr) { |
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531 _h_name = h_name; |
530 _h_name = h_name; |
532 _class_loader = class_loader; |
531 _class_loader = class_loader; |
533 _h_protection_domain = h_protection_domain; |
532 _h_protection_domain = h_protection_domain; |
534 _data_ptr = data_ptr; |
533 _data_ptr = data_ptr; |
535 _end_ptr = end_ptr; |
534 _end_ptr = end_ptr; |
536 _thread = JavaThread::current(); |
535 _thread = JavaThread::current(); |
537 _curr_len = *end_ptr - *data_ptr; |
536 _curr_len = *end_ptr - *data_ptr; |
538 _curr_data = *data_ptr; |
537 _curr_data = *data_ptr; |
539 _curr_env = NULL; |
538 _curr_env = NULL; |
540 _cached_length_ptr = cached_length_ptr; |
539 _cached_class_file_ptr = cache_ptr; |
541 _cached_data_ptr = cached_data_ptr; |
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542 |
540 |
543 _state = _thread->jvmti_thread_state(); |
541 _state = _thread->jvmti_thread_state(); |
544 if (_state != NULL) { |
542 if (_state != NULL) { |
545 _h_class_being_redefined = _state->get_class_being_redefined(); |
543 _h_class_being_redefined = _state->get_class_being_redefined(); |
546 _load_kind = _state->get_class_load_kind(); |
544 _load_kind = _state->get_class_load_kind(); |
613 _curr_len, _curr_data, |
611 _curr_len, _curr_data, |
614 &new_len, &new_data); |
612 &new_len, &new_data); |
615 } |
613 } |
616 if (new_data != NULL) { |
614 if (new_data != NULL) { |
617 // this agent has modified class data. |
615 // this agent has modified class data. |
618 if (caching_needed && *_cached_data_ptr == NULL) { |
616 if (caching_needed && *_cached_class_file_ptr == NULL) { |
619 // data has been changed by the new retransformable agent |
617 // data has been changed by the new retransformable agent |
620 // and it hasn't already been cached, cache it |
618 // and it hasn't already been cached, cache it |
621 *_cached_data_ptr = (unsigned char *)os::malloc(_curr_len, mtInternal); |
619 JvmtiCachedClassFileData *p; |
622 if (*_cached_data_ptr == NULL) { |
620 p = (JvmtiCachedClassFileData *)os::malloc( |
623 vm_exit_out_of_memory(_curr_len, OOM_MALLOC_ERROR, "unable to allocate cached copy of original class bytes"); |
621 offset_of(JvmtiCachedClassFileData, data) + _curr_len, mtInternal); |
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622 if (p == NULL) { |
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623 vm_exit_out_of_memory(offset_of(JvmtiCachedClassFileData, data) + _curr_len, |
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624 OOM_MALLOC_ERROR, |
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625 "unable to allocate cached copy of original class bytes"); |
624 } |
626 } |
625 memcpy(*_cached_data_ptr, _curr_data, _curr_len); |
627 p->length = _curr_len; |
626 *_cached_length_ptr = _curr_len; |
628 memcpy(p->data, _curr_data, _curr_len); |
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629 *_cached_class_file_ptr = p; |
627 } |
630 } |
628 |
631 |
629 if (_curr_data != *_data_ptr) { |
632 if (_curr_data != *_data_ptr) { |
630 // curr_data is previous agent modified class data. |
633 // curr_data is previous agent modified class data. |
631 // And this has been changed by the new agent so |
634 // And this has been changed by the new agent so |
660 void JvmtiExport::post_class_file_load_hook(Symbol* h_name, |
663 void JvmtiExport::post_class_file_load_hook(Symbol* h_name, |
661 Handle class_loader, |
664 Handle class_loader, |
662 Handle h_protection_domain, |
665 Handle h_protection_domain, |
663 unsigned char **data_ptr, |
666 unsigned char **data_ptr, |
664 unsigned char **end_ptr, |
667 unsigned char **end_ptr, |
665 unsigned char **cached_data_ptr, |
668 JvmtiCachedClassFileData **cache_ptr) { |
666 jint *cached_length_ptr) { |
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667 JvmtiClassFileLoadHookPoster poster(h_name, class_loader, |
669 JvmtiClassFileLoadHookPoster poster(h_name, class_loader, |
668 h_protection_domain, |
670 h_protection_domain, |
669 data_ptr, end_ptr, |
671 data_ptr, end_ptr, |
670 cached_data_ptr, |
672 cache_ptr); |
671 cached_length_ptr); |
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672 poster.post(); |
673 poster.post(); |
673 } |
674 } |
674 |
675 |
675 void JvmtiExport::report_unsupported(bool on) { |
676 void JvmtiExport::report_unsupported(bool on) { |
676 // If any JVMTI service is turned on, we need to exit before native code |
677 // If any JVMTI service is turned on, we need to exit before native code |