| /* |
| * Copyright (c) 2003, 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #include "precompiled.hpp" |
| #include "classfile/systemDictionary.hpp" |
| #include "code/nmethod.hpp" |
| #include "code/pcDesc.hpp" |
| #include "code/scopeDesc.hpp" |
| #include "interpreter/interpreter.hpp" |
| #include "jvmtifiles/jvmtiEnv.hpp" |
| #include "memory/resourceArea.hpp" |
| #include "oops/objArrayKlass.hpp" |
| #include "oops/objArrayOop.hpp" |
| #include "prims/jvmtiCodeBlobEvents.hpp" |
| #include "prims/jvmtiEventController.hpp" |
| #include "prims/jvmtiEventController.inline.hpp" |
| #include "prims/jvmtiExport.hpp" |
| #include "prims/jvmtiImpl.hpp" |
| #include "prims/jvmtiManageCapabilities.hpp" |
| #include "prims/jvmtiRawMonitor.hpp" |
| #include "prims/jvmtiTagMap.hpp" |
| #include "prims/jvmtiThreadState.inline.hpp" |
| #include "prims/jvmtiRedefineClasses.hpp" |
| #include "runtime/arguments.hpp" |
| #include "runtime/handles.hpp" |
| #include "runtime/interfaceSupport.hpp" |
| #include "runtime/objectMonitor.hpp" |
| #include "runtime/objectMonitor.inline.hpp" |
| #include "runtime/thread.inline.hpp" |
| #include "runtime/vframe.hpp" |
| #include "services/attachListener.hpp" |
| #include "services/serviceUtil.hpp" |
| #include "utilities/macros.hpp" |
| #if INCLUDE_ALL_GCS |
| #include "gc_implementation/parallelScavenge/psMarkSweep.hpp" |
| #endif // INCLUDE_ALL_GCS |
| |
| PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC |
| |
| #ifdef JVMTI_TRACE |
| #define EVT_TRACE(evt,out) if ((JvmtiTrace::event_trace_flags(evt) & JvmtiTrace::SHOW_EVENT_SENT) != 0) { SafeResourceMark rm; tty->print_cr out; } |
| #define EVT_TRIG_TRACE(evt,out) if ((JvmtiTrace::event_trace_flags(evt) & JvmtiTrace::SHOW_EVENT_TRIGGER) != 0) { SafeResourceMark rm; tty->print_cr out; } |
| #else |
| #define EVT_TRIG_TRACE(evt,out) |
| #define EVT_TRACE(evt,out) |
| #endif |
| |
| /////////////////////////////////////////////////////////////// |
| // |
| // JvmtiEventTransition |
| // |
| // TO DO -- |
| // more handle purging |
| |
| // Use this for JavaThreads and state is _thread_in_vm. |
| class JvmtiJavaThreadEventTransition : StackObj { |
| private: |
| ResourceMark _rm; |
| ThreadToNativeFromVM _transition; |
| HandleMark _hm; |
| |
| public: |
| JvmtiJavaThreadEventTransition(JavaThread *thread) : |
| _rm(), |
| _transition(thread), |
| _hm(thread) {}; |
| }; |
| |
| // For JavaThreads which are not in _thread_in_vm state |
| // and other system threads use this. |
| class JvmtiThreadEventTransition : StackObj { |
| private: |
| ResourceMark _rm; |
| HandleMark _hm; |
| JavaThreadState _saved_state; |
| JavaThread *_jthread; |
| |
| public: |
| JvmtiThreadEventTransition(Thread *thread) : _rm(), _hm() { |
| if (thread->is_Java_thread()) { |
| _jthread = (JavaThread *)thread; |
| _saved_state = _jthread->thread_state(); |
| if (_saved_state == _thread_in_Java) { |
| ThreadStateTransition::transition_from_java(_jthread, _thread_in_native); |
| } else { |
| ThreadStateTransition::transition(_jthread, _saved_state, _thread_in_native); |
| } |
| } else { |
| _jthread = NULL; |
| } |
| } |
| |
| ~JvmtiThreadEventTransition() { |
| if (_jthread != NULL) |
| ThreadStateTransition::transition_from_native(_jthread, _saved_state); |
| } |
| }; |
| |
| |
| /////////////////////////////////////////////////////////////// |
| // |
| // JvmtiEventMark |
| // |
| |
| class JvmtiEventMark : public StackObj { |
| private: |
| JavaThread *_thread; |
| JNIEnv* _jni_env; |
| bool _exception_detected; |
| bool _exception_caught; |
| #if 0 |
| JNIHandleBlock* _hblock; |
| #endif |
| |
| public: |
| JvmtiEventMark(JavaThread *thread) : _thread(thread), |
| _jni_env(thread->jni_environment()) { |
| #if 0 |
| _hblock = thread->active_handles(); |
| _hblock->clear_thoroughly(); // so we can be safe |
| #else |
| // we want to use the code above - but that needs the JNIHandle changes - later... |
| // for now, steal JNI push local frame code |
| JvmtiThreadState *state = thread->jvmti_thread_state(); |
| // we are before an event. |
| // Save current jvmti thread exception state. |
| if (state != NULL) { |
| _exception_detected = state->is_exception_detected(); |
| _exception_caught = state->is_exception_caught(); |
| } else { |
| _exception_detected = false; |
| _exception_caught = false; |
| } |
| |
| JNIHandleBlock* old_handles = thread->active_handles(); |
| JNIHandleBlock* new_handles = JNIHandleBlock::allocate_block(thread); |
| assert(new_handles != NULL, "should not be NULL"); |
| new_handles->set_pop_frame_link(old_handles); |
| thread->set_active_handles(new_handles); |
| #endif |
| assert(thread == JavaThread::current(), "thread must be current!"); |
| thread->frame_anchor()->make_walkable(thread); |
| }; |
| |
| ~JvmtiEventMark() { |
| #if 0 |
| _hblock->clear(); // for consistency with future correct behavior |
| #else |
| // we want to use the code above - but that needs the JNIHandle changes - later... |
| // for now, steal JNI pop local frame code |
| JNIHandleBlock* old_handles = _thread->active_handles(); |
| JNIHandleBlock* new_handles = old_handles->pop_frame_link(); |
| assert(new_handles != NULL, "should not be NULL"); |
| _thread->set_active_handles(new_handles); |
| // Note that we set the pop_frame_link to NULL explicitly, otherwise |
| // the release_block call will release the blocks. |
| old_handles->set_pop_frame_link(NULL); |
| JNIHandleBlock::release_block(old_handles, _thread); // may block |
| #endif |
| |
| JvmtiThreadState* state = _thread->jvmti_thread_state(); |
| // we are continuing after an event. |
| if (state != NULL) { |
| // Restore the jvmti thread exception state. |
| if (_exception_detected) { |
| state->set_exception_detected(); |
| } |
| if (_exception_caught) { |
| state->set_exception_caught(); |
| } |
| } |
| } |
| |
| #if 0 |
| jobject to_jobject(oop obj) { return obj == NULL? NULL : _hblock->allocate_handle_fast(obj); } |
| #else |
| // we want to use the code above - but that needs the JNIHandle changes - later... |
| // for now, use regular make_local |
| jobject to_jobject(oop obj) { return JNIHandles::make_local(_thread,obj); } |
| #endif |
| |
| jclass to_jclass(Klass* klass) { return (klass == NULL ? NULL : (jclass)to_jobject(klass->java_mirror())); } |
| |
| jmethodID to_jmethodID(methodHandle method) { return method->jmethod_id(); } |
| |
| JNIEnv* jni_env() { return _jni_env; } |
| }; |
| |
| class JvmtiThreadEventMark : public JvmtiEventMark { |
| private: |
| jthread _jt; |
| |
| public: |
| JvmtiThreadEventMark(JavaThread *thread) : |
| JvmtiEventMark(thread) { |
| _jt = (jthread)(to_jobject(thread->threadObj())); |
| }; |
| jthread jni_thread() { return _jt; } |
| }; |
| |
| class JvmtiClassEventMark : public JvmtiThreadEventMark { |
| private: |
| jclass _jc; |
| |
| public: |
| JvmtiClassEventMark(JavaThread *thread, Klass* klass) : |
| JvmtiThreadEventMark(thread) { |
| _jc = to_jclass(klass); |
| }; |
| jclass jni_class() { return _jc; } |
| }; |
| |
| class JvmtiMethodEventMark : public JvmtiThreadEventMark { |
| private: |
| jmethodID _mid; |
| |
| public: |
| JvmtiMethodEventMark(JavaThread *thread, methodHandle method) : |
| JvmtiThreadEventMark(thread), |
| _mid(to_jmethodID(method)) {}; |
| jmethodID jni_methodID() { return _mid; } |
| }; |
| |
| class JvmtiLocationEventMark : public JvmtiMethodEventMark { |
| private: |
| jlocation _loc; |
| |
| public: |
| JvmtiLocationEventMark(JavaThread *thread, methodHandle method, address location) : |
| JvmtiMethodEventMark(thread, method), |
| _loc(location - method->code_base()) {}; |
| jlocation location() { return _loc; } |
| }; |
| |
| class JvmtiExceptionEventMark : public JvmtiLocationEventMark { |
| private: |
| jobject _exc; |
| |
| public: |
| JvmtiExceptionEventMark(JavaThread *thread, methodHandle method, address location, Handle exception) : |
| JvmtiLocationEventMark(thread, method, location), |
| _exc(to_jobject(exception())) {}; |
| jobject exception() { return _exc; } |
| }; |
| |
| class JvmtiClassFileLoadEventMark : public JvmtiThreadEventMark { |
| private: |
| const char *_class_name; |
| jobject _jloader; |
| jobject _protection_domain; |
| jclass _class_being_redefined; |
| |
| public: |
| JvmtiClassFileLoadEventMark(JavaThread *thread, Symbol* name, |
| Handle class_loader, Handle prot_domain, KlassHandle *class_being_redefined) : JvmtiThreadEventMark(thread) { |
| _class_name = name != NULL? name->as_utf8() : NULL; |
| _jloader = (jobject)to_jobject(class_loader()); |
| _protection_domain = (jobject)to_jobject(prot_domain()); |
| if (class_being_redefined == NULL) { |
| _class_being_redefined = NULL; |
| } else { |
| _class_being_redefined = (jclass)to_jclass((*class_being_redefined)()); |
| } |
| }; |
| const char *class_name() { |
| return _class_name; |
| } |
| jobject jloader() { |
| return _jloader; |
| } |
| jobject protection_domain() { |
| return _protection_domain; |
| } |
| jclass class_being_redefined() { |
| return _class_being_redefined; |
| } |
| }; |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| int JvmtiExport::_field_access_count = 0; |
| int JvmtiExport::_field_modification_count = 0; |
| |
| bool JvmtiExport::_can_access_local_variables = false; |
| bool JvmtiExport::_can_hotswap_or_post_breakpoint = false; |
| bool JvmtiExport::_can_modify_any_class = false; |
| bool JvmtiExport::_can_walk_any_space = false; |
| |
| bool JvmtiExport::_has_redefined_a_class = false; |
| bool JvmtiExport::_all_dependencies_are_recorded = false; |
| |
| // |
| // field access management |
| // |
| |
| // interpreter generator needs the address of the counter |
| address JvmtiExport::get_field_access_count_addr() { |
| // We don't grab a lock because we don't want to |
| // serialize field access between all threads. This means that a |
| // thread on another processor can see the wrong count value and |
| // may either miss making a needed call into post_field_access() |
| // or will make an unneeded call into post_field_access(). We pay |
| // this price to avoid slowing down the VM when we aren't watching |
| // field accesses. |
| // Other access/mutation safe by virtue of being in VM state. |
| return (address)(&_field_access_count); |
| } |
| |
| // |
| // field modification management |
| // |
| |
| // interpreter generator needs the address of the counter |
| address JvmtiExport::get_field_modification_count_addr() { |
| // We don't grab a lock because we don't |
| // want to serialize field modification between all threads. This |
| // means that a thread on another processor can see the wrong |
| // count value and may either miss making a needed call into |
| // post_field_modification() or will make an unneeded call into |
| // post_field_modification(). We pay this price to avoid slowing |
| // down the VM when we aren't watching field modifications. |
| // Other access/mutation safe by virtue of being in VM state. |
| return (address)(&_field_modification_count); |
| } |
| |
| |
| /////////////////////////////////////////////////////////////// |
| // Functions needed by java.lang.instrument for starting up javaagent. |
| /////////////////////////////////////////////////////////////// |
| |
| jint |
| JvmtiExport::get_jvmti_interface(JavaVM *jvm, void **penv, jint version) { |
| // The JVMTI_VERSION_INTERFACE_JVMTI part of the version number |
| // has already been validated in JNI GetEnv(). |
| int major, minor, micro; |
| |
| // micro version doesn't matter here (yet?) |
| decode_version_values(version, &major, &minor, µ); |
| switch (major) { |
| case 1: |
| switch (minor) { |
| case 0: // version 1.0.<micro> is recognized |
| case 1: // version 1.1.<micro> is recognized |
| case 2: // version 1.2.<micro> is recognized |
| break; |
| |
| default: |
| return JNI_EVERSION; // unsupported minor version number |
| } |
| break; |
| default: |
| return JNI_EVERSION; // unsupported major version number |
| } |
| |
| if (JvmtiEnv::get_phase() == JVMTI_PHASE_LIVE) { |
| JavaThread* current_thread = (JavaThread*) ThreadLocalStorage::thread(); |
| // transition code: native to VM |
| ThreadInVMfromNative __tiv(current_thread); |
| VM_ENTRY_BASE(jvmtiEnv*, JvmtiExport::get_jvmti_interface, current_thread) |
| debug_only(VMNativeEntryWrapper __vew;) |
| |
| JvmtiEnv *jvmti_env = JvmtiEnv::create_a_jvmti(version); |
| *penv = jvmti_env->jvmti_external(); // actual type is jvmtiEnv* -- not to be confused with JvmtiEnv* |
| return JNI_OK; |
| |
| } else if (JvmtiEnv::get_phase() == JVMTI_PHASE_ONLOAD) { |
| // not live, no thread to transition |
| JvmtiEnv *jvmti_env = JvmtiEnv::create_a_jvmti(version); |
| *penv = jvmti_env->jvmti_external(); // actual type is jvmtiEnv* -- not to be confused with JvmtiEnv* |
| return JNI_OK; |
| |
| } else { |
| // Called at the wrong time |
| *penv = NULL; |
| return JNI_EDETACHED; |
| } |
| } |
| |
| |
| void |
| JvmtiExport::decode_version_values(jint version, int * major, int * minor, |
| int * micro) { |
| *major = (version & JVMTI_VERSION_MASK_MAJOR) >> JVMTI_VERSION_SHIFT_MAJOR; |
| *minor = (version & JVMTI_VERSION_MASK_MINOR) >> JVMTI_VERSION_SHIFT_MINOR; |
| *micro = (version & JVMTI_VERSION_MASK_MICRO) >> JVMTI_VERSION_SHIFT_MICRO; |
| } |
| |
| void JvmtiExport::enter_primordial_phase() { |
| JvmtiEnvBase::set_phase(JVMTI_PHASE_PRIMORDIAL); |
| } |
| |
| void JvmtiExport::enter_start_phase() { |
| JvmtiManageCapabilities::recompute_always_capabilities(); |
| JvmtiEnvBase::set_phase(JVMTI_PHASE_START); |
| } |
| |
| void JvmtiExport::enter_onload_phase() { |
| JvmtiEnvBase::set_phase(JVMTI_PHASE_ONLOAD); |
| } |
| |
| void JvmtiExport::enter_live_phase() { |
| JvmtiEnvBase::set_phase(JVMTI_PHASE_LIVE); |
| } |
| |
| // |
| // JVMTI events that the VM posts to the debugger and also startup agent |
| // and call the agent's premain() for java.lang.instrument. |
| // |
| |
| void JvmtiExport::post_vm_start() { |
| EVT_TRIG_TRACE(JVMTI_EVENT_VM_START, ("JVMTI Trg VM start event triggered" )); |
| |
| // can now enable some events |
| JvmtiEventController::vm_start(); |
| |
| JvmtiEnvIterator it; |
| for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { |
| if (env->is_enabled(JVMTI_EVENT_VM_START)) { |
| EVT_TRACE(JVMTI_EVENT_VM_START, ("JVMTI Evt VM start event sent" )); |
| |
| JavaThread *thread = JavaThread::current(); |
| JvmtiThreadEventMark jem(thread); |
| JvmtiJavaThreadEventTransition jet(thread); |
| jvmtiEventVMStart callback = env->callbacks()->VMStart; |
| if (callback != NULL) { |
| (*callback)(env->jvmti_external(), jem.jni_env()); |
| } |
| } |
| } |
| } |
| |
| |
| void JvmtiExport::post_vm_initialized() { |
| EVT_TRIG_TRACE(JVMTI_EVENT_VM_INIT, ("JVMTI Trg VM init event triggered" )); |
| |
| // can now enable events |
| JvmtiEventController::vm_init(); |
| |
| JvmtiEnvIterator it; |
| for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { |
| if (env->is_enabled(JVMTI_EVENT_VM_INIT)) { |
| EVT_TRACE(JVMTI_EVENT_VM_INIT, ("JVMTI Evt VM init event sent" )); |
| |
| JavaThread *thread = JavaThread::current(); |
| JvmtiThreadEventMark jem(thread); |
| JvmtiJavaThreadEventTransition jet(thread); |
| jvmtiEventVMInit callback = env->callbacks()->VMInit; |
| if (callback != NULL) { |
| (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread()); |
| } |
| } |
| } |
| } |
| |
| |
| void JvmtiExport::post_vm_death() { |
| EVT_TRIG_TRACE(JVMTI_EVENT_VM_DEATH, ("JVMTI Trg VM death event triggered" )); |
| |
| JvmtiEnvIterator it; |
| for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { |
| if (env->is_enabled(JVMTI_EVENT_VM_DEATH)) { |
| EVT_TRACE(JVMTI_EVENT_VM_DEATH, ("JVMTI Evt VM death event sent" )); |
| |
| JavaThread *thread = JavaThread::current(); |
| JvmtiEventMark jem(thread); |
| JvmtiJavaThreadEventTransition jet(thread); |
| jvmtiEventVMDeath callback = env->callbacks()->VMDeath; |
| if (callback != NULL) { |
| (*callback)(env->jvmti_external(), jem.jni_env()); |
| } |
| } |
| } |
| |
| JvmtiEnvBase::set_phase(JVMTI_PHASE_DEAD); |
| JvmtiEventController::vm_death(); |
| } |
| |
| char** |
| JvmtiExport::get_all_native_method_prefixes(int* count_ptr) { |
| // Have to grab JVMTI thread state lock to be sure environment doesn't |
| // go away while we iterate them. No locks during VM bring-up. |
| if (Threads::number_of_threads() == 0 || SafepointSynchronize::is_at_safepoint()) { |
| return JvmtiEnvBase::get_all_native_method_prefixes(count_ptr); |
| } else { |
| MutexLocker mu(JvmtiThreadState_lock); |
| return JvmtiEnvBase::get_all_native_method_prefixes(count_ptr); |
| } |
| } |
| |
| class JvmtiClassFileLoadHookPoster : public StackObj { |
| private: |
| Symbol* _h_name; |
| Handle _class_loader; |
| Handle _h_protection_domain; |
| unsigned char ** _data_ptr; |
| unsigned char ** _end_ptr; |
| JavaThread * _thread; |
| jint _curr_len; |
| unsigned char * _curr_data; |
| JvmtiEnv * _curr_env; |
| JvmtiCachedClassFileData ** _cached_class_file_ptr; |
| JvmtiThreadState * _state; |
| KlassHandle * _h_class_being_redefined; |
| JvmtiClassLoadKind _load_kind; |
| |
| public: |
| inline JvmtiClassFileLoadHookPoster(Symbol* h_name, Handle class_loader, |
| Handle h_protection_domain, |
| unsigned char **data_ptr, unsigned char **end_ptr, |
| JvmtiCachedClassFileData **cache_ptr) { |
| _h_name = h_name; |
| _class_loader = class_loader; |
| _h_protection_domain = h_protection_domain; |
| _data_ptr = data_ptr; |
| _end_ptr = end_ptr; |
| _thread = JavaThread::current(); |
| _curr_len = *end_ptr - *data_ptr; |
| _curr_data = *data_ptr; |
| _curr_env = NULL; |
| _cached_class_file_ptr = cache_ptr; |
| |
| _state = _thread->jvmti_thread_state(); |
| if (_state != NULL) { |
| _h_class_being_redefined = _state->get_class_being_redefined(); |
| _load_kind = _state->get_class_load_kind(); |
| // Clear class_being_redefined flag here. The action |
| // from agent handler could generate a new class file load |
| // hook event and if it is not cleared the new event generated |
| // from regular class file load could have this stale redefined |
| // class handle info. |
| _state->clear_class_being_redefined(); |
| } else { |
| // redefine and retransform will always set the thread state |
| _h_class_being_redefined = (KlassHandle *) NULL; |
| _load_kind = jvmti_class_load_kind_load; |
| } |
| } |
| |
| void post() { |
| // EVT_TRIG_TRACE(JVMTI_EVENT_CLASS_FILE_LOAD_HOOK, |
| // ("JVMTI [%s] class file load hook event triggered", |
| // JvmtiTrace::safe_get_thread_name(_thread))); |
| post_all_envs(); |
| copy_modified_data(); |
| } |
| |
| private: |
| void post_all_envs() { |
| if (_load_kind != jvmti_class_load_kind_retransform) { |
| // for class load and redefine, |
| // call the non-retransformable agents |
| JvmtiEnvIterator it; |
| for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { |
| if (!env->is_retransformable() && env->is_enabled(JVMTI_EVENT_CLASS_FILE_LOAD_HOOK)) { |
| // non-retransformable agents cannot retransform back, |
| // so no need to cache the original class file bytes |
| post_to_env(env, false); |
| } |
| } |
| } |
| JvmtiEnvIterator it; |
| for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { |
| // retransformable agents get all events |
| if (env->is_retransformable() && env->is_enabled(JVMTI_EVENT_CLASS_FILE_LOAD_HOOK)) { |
| // retransformable agents need to cache the original class file |
| // bytes if changes are made via the ClassFileLoadHook |
| post_to_env(env, true); |
| } |
| } |
| } |
| |
| void post_to_env(JvmtiEnv* env, bool caching_needed) { |
| unsigned char *new_data = NULL; |
| jint new_len = 0; |
| // EVT_TRACE(JVMTI_EVENT_CLASS_FILE_LOAD_HOOK, |
| // ("JVMTI [%s] class file load hook event sent %s data_ptr = %d, data_len = %d", |
| // JvmtiTrace::safe_get_thread_name(_thread), |
| // _h_name == NULL ? "NULL" : _h_name->as_utf8(), |
| // _curr_data, _curr_len )); |
| JvmtiClassFileLoadEventMark jem(_thread, _h_name, _class_loader, |
| _h_protection_domain, |
| _h_class_being_redefined); |
| JvmtiJavaThreadEventTransition jet(_thread); |
| JNIEnv* jni_env = (JvmtiEnv::get_phase() == JVMTI_PHASE_PRIMORDIAL)? |
| NULL : jem.jni_env(); |
| jvmtiEventClassFileLoadHook callback = env->callbacks()->ClassFileLoadHook; |
| if (callback != NULL) { |
| (*callback)(env->jvmti_external(), jni_env, |
| jem.class_being_redefined(), |
| jem.jloader(), jem.class_name(), |
| jem.protection_domain(), |
| _curr_len, _curr_data, |
| &new_len, &new_data); |
| } |
| if (new_data != NULL) { |
| // this agent has modified class data. |
| if (caching_needed && *_cached_class_file_ptr == NULL) { |
| // data has been changed by the new retransformable agent |
| // and it hasn't already been cached, cache it |
| JvmtiCachedClassFileData *p; |
| p = (JvmtiCachedClassFileData *)os::malloc( |
| offset_of(JvmtiCachedClassFileData, data) + _curr_len, mtInternal); |
| if (p == NULL) { |
| vm_exit_out_of_memory(offset_of(JvmtiCachedClassFileData, data) + _curr_len, |
| OOM_MALLOC_ERROR, |
| "unable to allocate cached copy of original class bytes"); |
| } |
| p->length = _curr_len; |
| memcpy(p->data, _curr_data, _curr_len); |
| *_cached_class_file_ptr = p; |
| } |
| |
| if (_curr_data != *_data_ptr) { |
| // curr_data is previous agent modified class data. |
| // And this has been changed by the new agent so |
| // we can delete it now. |
| _curr_env->Deallocate(_curr_data); |
| } |
| |
| // Class file data has changed by the current agent. |
| _curr_data = new_data; |
| _curr_len = new_len; |
| // Save the current agent env we need this to deallocate the |
| // memory allocated by this agent. |
| _curr_env = env; |
| } |
| } |
| |
| void copy_modified_data() { |
| // if one of the agent has modified class file data. |
| // Copy modified class data to new resources array. |
| if (_curr_data != *_data_ptr) { |
| *_data_ptr = NEW_RESOURCE_ARRAY(u1, _curr_len); |
| memcpy(*_data_ptr, _curr_data, _curr_len); |
| *_end_ptr = *_data_ptr + _curr_len; |
| _curr_env->Deallocate(_curr_data); |
| } |
| } |
| }; |
| |
| bool JvmtiExport::_should_post_class_file_load_hook = false; |
| |
| // this entry is for class file load hook on class load, redefine and retransform |
| void JvmtiExport::post_class_file_load_hook(Symbol* h_name, |
| Handle class_loader, |
| Handle h_protection_domain, |
| unsigned char **data_ptr, |
| unsigned char **end_ptr, |
| JvmtiCachedClassFileData **cache_ptr) { |
| JvmtiClassFileLoadHookPoster poster(h_name, class_loader, |
| h_protection_domain, |
| data_ptr, end_ptr, |
| cache_ptr); |
| poster.post(); |
| } |
| |
| void JvmtiExport::report_unsupported(bool on) { |
| // If any JVMTI service is turned on, we need to exit before native code |
| // tries to access nonexistant services. |
| if (on) { |
| vm_exit_during_initialization("Java Kernel does not support JVMTI."); |
| } |
| } |
| |
| |
| static inline Klass* oop_to_klass(oop obj) { |
| Klass* k = obj->klass(); |
| |
| // if the object is a java.lang.Class then return the java mirror |
| if (k == SystemDictionary::Class_klass()) { |
| if (!java_lang_Class::is_primitive(obj)) { |
| k = java_lang_Class::as_Klass(obj); |
| assert(k != NULL, "class for non-primitive mirror must exist"); |
| } |
| } |
| return k; |
| } |
| |
| class JvmtiVMObjectAllocEventMark : public JvmtiClassEventMark { |
| private: |
| jobject _jobj; |
| jlong _size; |
| public: |
| JvmtiVMObjectAllocEventMark(JavaThread *thread, oop obj) : JvmtiClassEventMark(thread, oop_to_klass(obj)) { |
| _jobj = (jobject)to_jobject(obj); |
| _size = obj->size() * wordSize; |
| }; |
| jobject jni_jobject() { return _jobj; } |
| jlong size() { return _size; } |
| }; |
| |
| class JvmtiCompiledMethodLoadEventMark : public JvmtiMethodEventMark { |
| private: |
| jint _code_size; |
| const void *_code_data; |
| jint _map_length; |
| jvmtiAddrLocationMap *_map; |
| const void *_compile_info; |
| public: |
| JvmtiCompiledMethodLoadEventMark(JavaThread *thread, nmethod *nm, void* compile_info_ptr = NULL) |
| : JvmtiMethodEventMark(thread,methodHandle(thread, nm->method())) { |
| _code_data = nm->insts_begin(); |
| _code_size = nm->insts_size(); |
| _compile_info = compile_info_ptr; // Set void pointer of compiledMethodLoad Event. Default value is NULL. |
| JvmtiCodeBlobEvents::build_jvmti_addr_location_map(nm, &_map, &_map_length); |
| } |
| ~JvmtiCompiledMethodLoadEventMark() { |
| FREE_C_HEAP_ARRAY(jvmtiAddrLocationMap, _map, mtInternal); |
| } |
| |
| jint code_size() { return _code_size; } |
| const void *code_data() { return _code_data; } |
| jint map_length() { return _map_length; } |
| const jvmtiAddrLocationMap* map() { return _map; } |
| const void *compile_info() { return _compile_info; } |
| }; |
| |
| |
| |
| class JvmtiMonitorEventMark : public JvmtiThreadEventMark { |
| private: |
| jobject _jobj; |
| public: |
| JvmtiMonitorEventMark(JavaThread *thread, oop object) |
| : JvmtiThreadEventMark(thread){ |
| _jobj = to_jobject(object); |
| } |
| jobject jni_object() { return _jobj; } |
| }; |
| |
| /////////////////////////////////////////////////////////////// |
| // |
| // pending CompiledMethodUnload support |
| // |
| |
| void JvmtiExport::post_compiled_method_unload( |
| jmethodID method, const void *code_begin) { |
| JavaThread* thread = JavaThread::current(); |
| EVT_TRIG_TRACE(JVMTI_EVENT_COMPILED_METHOD_UNLOAD, |
| ("JVMTI [%s] method compile unload event triggered", |
| JvmtiTrace::safe_get_thread_name(thread))); |
| |
| // post the event for each environment that has this event enabled. |
| JvmtiEnvIterator it; |
| for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { |
| if (env->is_enabled(JVMTI_EVENT_COMPILED_METHOD_UNLOAD)) { |
| |
| EVT_TRACE(JVMTI_EVENT_COMPILED_METHOD_UNLOAD, |
| ("JVMTI [%s] class compile method unload event sent jmethodID " PTR_FORMAT, |
| JvmtiTrace::safe_get_thread_name(thread), method)); |
| |
| ResourceMark rm(thread); |
| |
| JvmtiEventMark jem(thread); |
| JvmtiJavaThreadEventTransition jet(thread); |
| jvmtiEventCompiledMethodUnload callback = env->callbacks()->CompiledMethodUnload; |
| if (callback != NULL) { |
| (*callback)(env->jvmti_external(), method, code_begin); |
| } |
| } |
| } |
| } |
| |
| /////////////////////////////////////////////////////////////// |
| // |
| // JvmtiExport |
| // |
| |
| void JvmtiExport::post_raw_breakpoint(JavaThread *thread, Method* method, address location) { |
| HandleMark hm(thread); |
| methodHandle mh(thread, method); |
| |
| JvmtiThreadState *state = thread->jvmti_thread_state(); |
| if (state == NULL) { |
| return; |
| } |
| EVT_TRIG_TRACE(JVMTI_EVENT_BREAKPOINT, ("JVMTI [%s] Trg Breakpoint triggered", |
| JvmtiTrace::safe_get_thread_name(thread))); |
| JvmtiEnvThreadStateIterator it(state); |
| for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { |
| ets->compare_and_set_current_location(mh(), location, JVMTI_EVENT_BREAKPOINT); |
| if (!ets->breakpoint_posted() && ets->is_enabled(JVMTI_EVENT_BREAKPOINT)) { |
| ThreadState old_os_state = thread->osthread()->get_state(); |
| thread->osthread()->set_state(BREAKPOINTED); |
| EVT_TRACE(JVMTI_EVENT_BREAKPOINT, ("JVMTI [%s] Evt Breakpoint sent %s.%s @ %d", |
| JvmtiTrace::safe_get_thread_name(thread), |
| (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), |
| (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), |
| location - mh()->code_base() )); |
| |
| JvmtiEnv *env = ets->get_env(); |
| JvmtiLocationEventMark jem(thread, mh, location); |
| JvmtiJavaThreadEventTransition jet(thread); |
| jvmtiEventBreakpoint callback = env->callbacks()->Breakpoint; |
| if (callback != NULL) { |
| (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), |
| jem.jni_methodID(), jem.location()); |
| } |
| |
| ets->set_breakpoint_posted(); |
| thread->osthread()->set_state(old_os_state); |
| } |
| } |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| bool JvmtiExport::_can_get_source_debug_extension = false; |
| bool JvmtiExport::_can_maintain_original_method_order = false; |
| bool JvmtiExport::_can_post_interpreter_events = false; |
| bool JvmtiExport::_can_post_on_exceptions = false; |
| bool JvmtiExport::_can_post_breakpoint = false; |
| bool JvmtiExport::_can_post_field_access = false; |
| bool JvmtiExport::_can_post_field_modification = false; |
| bool JvmtiExport::_can_post_method_entry = false; |
| bool JvmtiExport::_can_post_method_exit = false; |
| bool JvmtiExport::_can_pop_frame = false; |
| bool JvmtiExport::_can_force_early_return = false; |
| |
| bool JvmtiExport::_should_post_single_step = false; |
| bool JvmtiExport::_should_post_field_access = false; |
| bool JvmtiExport::_should_post_field_modification = false; |
| bool JvmtiExport::_should_post_class_load = false; |
| bool JvmtiExport::_should_post_class_prepare = false; |
| bool JvmtiExport::_should_post_class_unload = false; |
| bool JvmtiExport::_should_post_thread_life = false; |
| bool JvmtiExport::_should_clean_up_heap_objects = false; |
| bool JvmtiExport::_should_post_native_method_bind = false; |
| bool JvmtiExport::_should_post_dynamic_code_generated = false; |
| bool JvmtiExport::_should_post_data_dump = false; |
| bool JvmtiExport::_should_post_compiled_method_load = false; |
| bool JvmtiExport::_should_post_compiled_method_unload = false; |
| bool JvmtiExport::_should_post_monitor_contended_enter = false; |
| bool JvmtiExport::_should_post_monitor_contended_entered = false; |
| bool JvmtiExport::_should_post_monitor_wait = false; |
| bool JvmtiExport::_should_post_monitor_waited = false; |
| bool JvmtiExport::_should_post_garbage_collection_start = false; |
| bool JvmtiExport::_should_post_garbage_collection_finish = false; |
| bool JvmtiExport::_should_post_object_free = false; |
| bool JvmtiExport::_should_post_resource_exhausted = false; |
| bool JvmtiExport::_should_post_vm_object_alloc = false; |
| bool JvmtiExport::_should_post_on_exceptions = false; |
| |
| //////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| |
| // |
| // JVMTI single step management |
| // |
| void JvmtiExport::at_single_stepping_point(JavaThread *thread, Method* method, address location) { |
| assert(JvmtiExport::should_post_single_step(), "must be single stepping"); |
| |
| HandleMark hm(thread); |
| methodHandle mh(thread, method); |
| |
| // update information about current location and post a step event |
| JvmtiThreadState *state = thread->jvmti_thread_state(); |
| if (state == NULL) { |
| return; |
| } |
| EVT_TRIG_TRACE(JVMTI_EVENT_SINGLE_STEP, ("JVMTI [%s] Trg Single Step triggered", |
| JvmtiTrace::safe_get_thread_name(thread))); |
| if (!state->hide_single_stepping()) { |
| if (state->is_pending_step_for_popframe()) { |
| state->process_pending_step_for_popframe(); |
| } |
| if (state->is_pending_step_for_earlyret()) { |
| state->process_pending_step_for_earlyret(); |
| } |
| JvmtiExport::post_single_step(thread, mh(), location); |
| } |
| } |
| |
| |
| void JvmtiExport::expose_single_stepping(JavaThread *thread) { |
| JvmtiThreadState *state = thread->jvmti_thread_state(); |
| if (state != NULL) { |
| state->clear_hide_single_stepping(); |
| } |
| } |
| |
| |
| bool JvmtiExport::hide_single_stepping(JavaThread *thread) { |
| JvmtiThreadState *state = thread->jvmti_thread_state(); |
| if (state != NULL && state->is_enabled(JVMTI_EVENT_SINGLE_STEP)) { |
| state->set_hide_single_stepping(); |
| return true; |
| } else { |
| return false; |
| } |
| } |
| |
| void JvmtiExport::post_class_load(JavaThread *thread, Klass* klass) { |
| HandleMark hm(thread); |
| KlassHandle kh(thread, klass); |
| |
| EVT_TRIG_TRACE(JVMTI_EVENT_CLASS_LOAD, ("JVMTI [%s] Trg Class Load triggered", |
| JvmtiTrace::safe_get_thread_name(thread))); |
| JvmtiThreadState* state = thread->jvmti_thread_state(); |
| if (state == NULL) { |
| return; |
| } |
| JvmtiEnvThreadStateIterator it(state); |
| for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { |
| if (ets->is_enabled(JVMTI_EVENT_CLASS_LOAD)) { |
| EVT_TRACE(JVMTI_EVENT_CLASS_LOAD, ("JVMTI [%s] Evt Class Load sent %s", |
| JvmtiTrace::safe_get_thread_name(thread), |
| kh()==NULL? "NULL" : kh()->external_name() )); |
| |
| JvmtiEnv *env = ets->get_env(); |
| JvmtiClassEventMark jem(thread, kh()); |
| JvmtiJavaThreadEventTransition jet(thread); |
| jvmtiEventClassLoad callback = env->callbacks()->ClassLoad; |
| if (callback != NULL) { |
| (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_class()); |
| } |
| } |
| } |
| } |
| |
| |
| void JvmtiExport::post_class_prepare(JavaThread *thread, Klass* klass) { |
| HandleMark hm(thread); |
| KlassHandle kh(thread, klass); |
| |
| EVT_TRIG_TRACE(JVMTI_EVENT_CLASS_PREPARE, ("JVMTI [%s] Trg Class Prepare triggered", |
| JvmtiTrace::safe_get_thread_name(thread))); |
| JvmtiThreadState* state = thread->jvmti_thread_state(); |
| if (state == NULL) { |
| return; |
| } |
| JvmtiEnvThreadStateIterator it(state); |
| for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { |
| if (ets->is_enabled(JVMTI_EVENT_CLASS_PREPARE)) { |
| EVT_TRACE(JVMTI_EVENT_CLASS_PREPARE, ("JVMTI [%s] Evt Class Prepare sent %s", |
| JvmtiTrace::safe_get_thread_name(thread), |
| kh()==NULL? "NULL" : kh()->external_name() )); |
| |
| JvmtiEnv *env = ets->get_env(); |
| JvmtiClassEventMark jem(thread, kh()); |
| JvmtiJavaThreadEventTransition jet(thread); |
| jvmtiEventClassPrepare callback = env->callbacks()->ClassPrepare; |
| if (callback != NULL) { |
| (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_class()); |
| } |
| } |
| } |
| } |
| |
| void JvmtiExport::post_class_unload(Klass* klass) { |
| Thread *thread = Thread::current(); |
| HandleMark hm(thread); |
| KlassHandle kh(thread, klass); |
| |
| EVT_TRIG_TRACE(EXT_EVENT_CLASS_UNLOAD, ("JVMTI [?] Trg Class Unload triggered" )); |
| if (JvmtiEventController::is_enabled((jvmtiEvent)EXT_EVENT_CLASS_UNLOAD)) { |
| assert(thread->is_VM_thread(), "wrong thread"); |
| |
| // get JavaThread for whom we are proxy |
| JavaThread *real_thread = |
| (JavaThread *)((VMThread *)thread)->vm_operation()->calling_thread(); |
| |
| JvmtiEnvIterator it; |
| for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { |
| if (env->is_enabled((jvmtiEvent)EXT_EVENT_CLASS_UNLOAD)) { |
| EVT_TRACE(EXT_EVENT_CLASS_UNLOAD, ("JVMTI [?] Evt Class Unload sent %s", |
| kh()==NULL? "NULL" : kh()->external_name() )); |
| |
| // do everything manually, since this is a proxy - needs special care |
| JNIEnv* jni_env = real_thread->jni_environment(); |
| jthread jt = (jthread)JNIHandles::make_local(real_thread, real_thread->threadObj()); |
| jclass jk = (jclass)JNIHandles::make_local(real_thread, kh()->java_mirror()); |
| |
| // Before we call the JVMTI agent, we have to set the state in the |
| // thread for which we are proxying. |
| JavaThreadState prev_state = real_thread->thread_state(); |
| assert(((Thread *)real_thread)->is_ConcurrentGC_thread() || |
| (real_thread->is_Java_thread() && prev_state == _thread_blocked), |
| "should be ConcurrentGCThread or JavaThread at safepoint"); |
| real_thread->set_thread_state(_thread_in_native); |
| |
| jvmtiExtensionEvent callback = env->ext_callbacks()->ClassUnload; |
| if (callback != NULL) { |
| (*callback)(env->jvmti_external(), jni_env, jt, jk); |
| } |
| |
| assert(real_thread->thread_state() == _thread_in_native, |
| "JavaThread should be in native"); |
| real_thread->set_thread_state(prev_state); |
| |
| JNIHandles::destroy_local(jk); |
| JNIHandles::destroy_local(jt); |
| } |
| } |
| } |
| } |
| |
| |
| void JvmtiExport::post_thread_start(JavaThread *thread) { |
| assert(thread->thread_state() == _thread_in_vm, "must be in vm state"); |
| |
| EVT_TRIG_TRACE(JVMTI_EVENT_THREAD_START, ("JVMTI [%s] Trg Thread Start event triggered", |
| JvmtiTrace::safe_get_thread_name(thread))); |
| |
| // do JVMTI thread initialization (if needed) |
| JvmtiEventController::thread_started(thread); |
| |
| // Do not post thread start event for hidden java thread. |
| if (JvmtiEventController::is_enabled(JVMTI_EVENT_THREAD_START) && |
| !thread->is_hidden_from_external_view()) { |
| JvmtiEnvIterator it; |
| for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { |
| if (env->is_enabled(JVMTI_EVENT_THREAD_START)) { |
| EVT_TRACE(JVMTI_EVENT_THREAD_START, ("JVMTI [%s] Evt Thread Start event sent", |
| JvmtiTrace::safe_get_thread_name(thread) )); |
| |
| JvmtiThreadEventMark jem(thread); |
| JvmtiJavaThreadEventTransition jet(thread); |
| jvmtiEventThreadStart callback = env->callbacks()->ThreadStart; |
| if (callback != NULL) { |
| (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread()); |
| } |
| } |
| } |
| } |
| } |
| |
| |
| void JvmtiExport::post_thread_end(JavaThread *thread) { |
| EVT_TRIG_TRACE(JVMTI_EVENT_THREAD_END, ("JVMTI [%s] Trg Thread End event triggered", |
| JvmtiTrace::safe_get_thread_name(thread))); |
| |
| JvmtiThreadState *state = thread->jvmti_thread_state(); |
| if (state == NULL) { |
| return; |
| } |
| |
| // Do not post thread end event for hidden java thread. |
| if (state->is_enabled(JVMTI_EVENT_THREAD_END) && |
| !thread->is_hidden_from_external_view()) { |
| |
| JvmtiEnvThreadStateIterator it(state); |
| for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { |
| if (ets->is_enabled(JVMTI_EVENT_THREAD_END)) { |
| EVT_TRACE(JVMTI_EVENT_THREAD_END, ("JVMTI [%s] Evt Thread End event sent", |
| JvmtiTrace::safe_get_thread_name(thread) )); |
| |
| JvmtiEnv *env = ets->get_env(); |
| JvmtiThreadEventMark jem(thread); |
| JvmtiJavaThreadEventTransition jet(thread); |
| jvmtiEventThreadEnd callback = env->callbacks()->ThreadEnd; |
| if (callback != NULL) { |
| (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread()); |
| } |
| } |
| } |
| } |
| } |
| |
| void JvmtiExport::post_object_free(JvmtiEnv* env, jlong tag) { |
| assert(SafepointSynchronize::is_at_safepoint(), "must be executed at safepoint"); |
| assert(env->is_enabled(JVMTI_EVENT_OBJECT_FREE), "checking"); |
| |
| EVT_TRIG_TRACE(JVMTI_EVENT_OBJECT_FREE, ("JVMTI [?] Trg Object Free triggered" )); |
| EVT_TRACE(JVMTI_EVENT_OBJECT_FREE, ("JVMTI [?] Evt Object Free sent")); |
| |
| jvmtiEventObjectFree callback = env->callbacks()->ObjectFree; |
| if (callback != NULL) { |
| (*callback)(env->jvmti_external(), tag); |
| } |
| } |
| |
| void JvmtiExport::post_resource_exhausted(jint resource_exhausted_flags, const char* description) { |
| EVT_TRIG_TRACE(JVMTI_EVENT_RESOURCE_EXHAUSTED, ("JVMTI Trg resource exhausted event triggered" )); |
| |
| JvmtiEnvIterator it; |
| for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { |
| if (env->is_enabled(JVMTI_EVENT_RESOURCE_EXHAUSTED)) { |
| EVT_TRACE(JVMTI_EVENT_RESOURCE_EXHAUSTED, ("JVMTI Evt resource exhausted event sent" )); |
| |
| JavaThread *thread = JavaThread::current(); |
| JvmtiThreadEventMark jem(thread); |
| JvmtiJavaThreadEventTransition jet(thread); |
| jvmtiEventResourceExhausted callback = env->callbacks()->ResourceExhausted; |
| if (callback != NULL) { |
| (*callback)(env->jvmti_external(), jem.jni_env(), |
| resource_exhausted_flags, NULL, description); |
| } |
| } |
| } |
| } |
| |
| void JvmtiExport::post_method_entry(JavaThread *thread, Method* method, frame current_frame) { |
| HandleMark hm(thread); |
| methodHandle mh(thread, method); |
| |
| EVT_TRIG_TRACE(JVMTI_EVENT_METHOD_ENTRY, ("JVMTI [%s] Trg Method Entry triggered %s.%s", |
| JvmtiTrace::safe_get_thread_name(thread), |
| (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), |
| (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); |
| |
| JvmtiThreadState* state = thread->jvmti_thread_state(); |
| if (state == NULL || !state->is_interp_only_mode()) { |
| // for any thread that actually wants method entry, interp_only_mode is set |
| return; |
| } |
| |
| state->incr_cur_stack_depth(); |
| |
| if (state->is_enabled(JVMTI_EVENT_METHOD_ENTRY)) { |
| JvmtiEnvThreadStateIterator it(state); |
| for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { |
| if (ets->is_enabled(JVMTI_EVENT_METHOD_ENTRY)) { |
| EVT_TRACE(JVMTI_EVENT_METHOD_ENTRY, ("JVMTI [%s] Evt Method Entry sent %s.%s", |
| JvmtiTrace::safe_get_thread_name(thread), |
| (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), |
| (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); |
| |
| JvmtiEnv *env = ets->get_env(); |
| JvmtiMethodEventMark jem(thread, mh); |
| JvmtiJavaThreadEventTransition jet(thread); |
| jvmtiEventMethodEntry callback = env->callbacks()->MethodEntry; |
| if (callback != NULL) { |
| (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_methodID()); |
| } |
| } |
| } |
| } |
| } |
| |
| void JvmtiExport::post_method_exit(JavaThread *thread, Method* method, frame current_frame) { |
| HandleMark hm(thread); |
| methodHandle mh(thread, method); |
| |
| EVT_TRIG_TRACE(JVMTI_EVENT_METHOD_EXIT, ("JVMTI [%s] Trg Method Exit triggered %s.%s", |
| JvmtiTrace::safe_get_thread_name(thread), |
| (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), |
| (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); |
| |
| JvmtiThreadState *state = thread->jvmti_thread_state(); |
| if (state == NULL || !state->is_interp_only_mode()) { |
| // for any thread that actually wants method exit, interp_only_mode is set |
| return; |
| } |
| |
| // return a flag when a method terminates by throwing an exception |
| // i.e. if an exception is thrown and it's not caught by the current method |
| bool exception_exit = state->is_exception_detected() && !state->is_exception_caught(); |
| |
| |
| if (state->is_enabled(JVMTI_EVENT_METHOD_EXIT)) { |
| Handle result; |
| jvalue value; |
| value.j = 0L; |
| |
| // if the method hasn't been popped because of an exception then we populate |
| // the return_value parameter for the callback. At this point we only have |
| // the address of a "raw result" and we just call into the interpreter to |
| // convert this into a jvalue. |
| if (!exception_exit) { |
| oop oop_result; |
| BasicType type = current_frame.interpreter_frame_result(&oop_result, &value); |
| if (type == T_OBJECT || type == T_ARRAY) { |
| result = Handle(thread, oop_result); |
| } |
| } |
| |
| JvmtiEnvThreadStateIterator it(state); |
| for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { |
| if (ets->is_enabled(JVMTI_EVENT_METHOD_EXIT)) { |
| EVT_TRACE(JVMTI_EVENT_METHOD_EXIT, ("JVMTI [%s] Evt Method Exit sent %s.%s", |
| JvmtiTrace::safe_get_thread_name(thread), |
| (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), |
| (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); |
| |
| JvmtiEnv *env = ets->get_env(); |
| JvmtiMethodEventMark jem(thread, mh); |
| if (result.not_null()) { |
| value.l = JNIHandles::make_local(thread, result()); |
| } |
| JvmtiJavaThreadEventTransition jet(thread); |
| jvmtiEventMethodExit callback = env->callbacks()->MethodExit; |
| if (callback != NULL) { |
| (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), |
| jem.jni_methodID(), exception_exit, value); |
| } |
| } |
| } |
| } |
| |
| if (state->is_enabled(JVMTI_EVENT_FRAME_POP)) { |
| JvmtiEnvThreadStateIterator it(state); |
| for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { |
| int cur_frame_number = state->cur_stack_depth(); |
| |
| if (ets->is_frame_pop(cur_frame_number)) { |
| // we have a NotifyFramePop entry for this frame. |
| // now check that this env/thread wants this event |
| if (ets->is_enabled(JVMTI_EVENT_FRAME_POP)) { |
| EVT_TRACE(JVMTI_EVENT_FRAME_POP, ("JVMTI [%s] Evt Frame Pop sent %s.%s", |
| JvmtiTrace::safe_get_thread_name(thread), |
| (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), |
| (mh() == NULL) ? "NULL" : mh()->name()->as_C_string() )); |
| |
| // we also need to issue a frame pop event for this frame |
| JvmtiEnv *env = ets->get_env(); |
| JvmtiMethodEventMark jem(thread, mh); |
| JvmtiJavaThreadEventTransition jet(thread); |
| jvmtiEventFramePop callback = env->callbacks()->FramePop; |
| if (callback != NULL) { |
| (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), |
| jem.jni_methodID(), exception_exit); |
| } |
| } |
| // remove the frame's entry |
| ets->clear_frame_pop(cur_frame_number); |
| } |
| } |
| } |
| |
| state->decr_cur_stack_depth(); |
| } |
| |
| |
| // Todo: inline this for optimization |
| void JvmtiExport::post_single_step(JavaThread *thread, Method* method, address location) { |
| HandleMark hm(thread); |
| methodHandle mh(thread, method); |
| |
| JvmtiThreadState *state = thread->jvmti_thread_state(); |
| if (state == NULL) { |
| return; |
| } |
| JvmtiEnvThreadStateIterator it(state); |
| for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { |
| ets->compare_and_set_current_location(mh(), location, JVMTI_EVENT_SINGLE_STEP); |
| if (!ets->single_stepping_posted() && ets->is_enabled(JVMTI_EVENT_SINGLE_STEP)) { |
| EVT_TRACE(JVMTI_EVENT_SINGLE_STEP, ("JVMTI [%s] Evt Single Step sent %s.%s @ %d", |
| JvmtiTrace::safe_get_thread_name(thread), |
| (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), |
| (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), |
| location - mh()->code_base() )); |
| |
| JvmtiEnv *env = ets->get_env(); |
| JvmtiLocationEventMark jem(thread, mh, location); |
| JvmtiJavaThreadEventTransition jet(thread); |
| jvmtiEventSingleStep callback = env->callbacks()->SingleStep; |
| if (callback != NULL) { |
| (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), |
| jem.jni_methodID(), jem.location()); |
| } |
| |
| ets->set_single_stepping_posted(); |
| } |
| } |
| } |
| |
| |
| void JvmtiExport::post_exception_throw(JavaThread *thread, Method* method, address location, oop exception) { |
| HandleMark hm(thread); |
| methodHandle mh(thread, method); |
| Handle exception_handle(thread, exception); |
| |
| JvmtiThreadState *state = thread->jvmti_thread_state(); |
| if (state == NULL) { |
| return; |
| } |
| |
| EVT_TRIG_TRACE(JVMTI_EVENT_EXCEPTION, ("JVMTI [%s] Trg Exception thrown triggered", |
| JvmtiTrace::safe_get_thread_name(thread))); |
| if (!state->is_exception_detected()) { |
| state->set_exception_detected(); |
| JvmtiEnvThreadStateIterator it(state); |
| for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { |
| if (ets->is_enabled(JVMTI_EVENT_EXCEPTION) && (exception != NULL)) { |
| |
| EVT_TRACE(JVMTI_EVENT_EXCEPTION, |
| ("JVMTI [%s] Evt Exception thrown sent %s.%s @ %d", |
| JvmtiTrace::safe_get_thread_name(thread), |
| (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), |
| (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), |
| location - mh()->code_base() )); |
| |
| JvmtiEnv *env = ets->get_env(); |
| JvmtiExceptionEventMark jem(thread, mh, location, exception_handle); |
| |
| // It's okay to clear these exceptions here because we duplicate |
| // this lookup in InterpreterRuntime::exception_handler_for_exception. |
| EXCEPTION_MARK; |
| |
| bool should_repeat; |
| vframeStream st(thread); |
| assert(!st.at_end(), "cannot be at end"); |
| Method* current_method = NULL; |
| // A GC may occur during the Method::fast_exception_handler_bci_for() |
| // call below if it needs to load the constraint class. Using a |
| // methodHandle to keep the 'current_method' from being deallocated |
| // if GC happens. |
| methodHandle current_mh = methodHandle(thread, current_method); |
| int current_bci = -1; |
| do { |
| current_method = st.method(); |
| current_mh = methodHandle(thread, current_method); |
| current_bci = st.bci(); |
| do { |
| should_repeat = false; |
| KlassHandle eh_klass(thread, exception_handle()->klass()); |
| current_bci = Method::fast_exception_handler_bci_for( |
| current_mh, eh_klass, current_bci, THREAD); |
| if (HAS_PENDING_EXCEPTION) { |
| exception_handle = Handle(thread, PENDING_EXCEPTION); |
| CLEAR_PENDING_EXCEPTION; |
| should_repeat = true; |
| } |
| } while (should_repeat && (current_bci != -1)); |
| st.next(); |
| } while ((current_bci < 0) && (!st.at_end())); |
| |
| jmethodID catch_jmethodID; |
| if (current_bci < 0) { |
| catch_jmethodID = 0; |
| current_bci = 0; |
| } else { |
| catch_jmethodID = jem.to_jmethodID(current_mh); |
| } |
| |
| JvmtiJavaThreadEventTransition jet(thread); |
| jvmtiEventException callback = env->callbacks()->Exception; |
| if (callback != NULL) { |
| (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), |
| jem.jni_methodID(), jem.location(), |
| jem.exception(), |
| catch_jmethodID, current_bci); |
| } |
| } |
| } |
| } |
| |
| // frames may get popped because of this throw, be safe - invalidate cached depth |
| state->invalidate_cur_stack_depth(); |
| } |
| |
| |
| void JvmtiExport::notice_unwind_due_to_exception(JavaThread *thread, Method* method, address location, oop exception, bool in_handler_frame) { |
| HandleMark hm(thread); |
| methodHandle mh(thread, method); |
| Handle exception_handle(thread, exception); |
| |
| JvmtiThreadState *state = thread->jvmti_thread_state(); |
| if (state == NULL) { |
| return; |
| } |
| EVT_TRIG_TRACE(JVMTI_EVENT_EXCEPTION_CATCH, |
| ("JVMTI [%s] Trg unwind_due_to_exception triggered %s.%s @ %s%d - %s", |
| JvmtiTrace::safe_get_thread_name(thread), |
| (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), |
| (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), |
| location==0? "no location:" : "", |
| location==0? 0 : location - mh()->code_base(), |
| in_handler_frame? "in handler frame" : "not handler frame" )); |
| |
| if (state->is_exception_detected()) { |
| |
| state->invalidate_cur_stack_depth(); |
| if (!in_handler_frame) { |
| // Not in exception handler. |
| if(state->is_interp_only_mode()) { |
| // method exit and frame pop events are posted only in interp mode. |
| // When these events are enabled code should be in running in interp mode. |
| JvmtiExport::post_method_exit(thread, method, thread->last_frame()); |
| // The cached cur_stack_depth might have changed from the |
| // operations of frame pop or method exit. We are not 100% sure |
| // the cached cur_stack_depth is still valid depth so invalidate |
| // it. |
| state->invalidate_cur_stack_depth(); |
| } |
| } else { |
| // In exception handler frame. Report exception catch. |
| assert(location != NULL, "must be a known location"); |
| // Update cur_stack_depth - the frames above the current frame |
| // have been unwound due to this exception: |
| assert(!state->is_exception_caught(), "exception must not be caught yet."); |
| state->set_exception_caught(); |
| |
| JvmtiEnvThreadStateIterator it(state); |
| for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { |
| if (ets->is_enabled(JVMTI_EVENT_EXCEPTION_CATCH) && (exception_handle() != NULL)) { |
| EVT_TRACE(JVMTI_EVENT_EXCEPTION_CATCH, |
| ("JVMTI [%s] Evt ExceptionCatch sent %s.%s @ %d", |
| JvmtiTrace::safe_get_thread_name(thread), |
| (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), |
| (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), |
| location - mh()->code_base() )); |
| |
| JvmtiEnv *env = ets->get_env(); |
| JvmtiExceptionEventMark jem(thread, mh, location, exception_handle); |
| JvmtiJavaThreadEventTransition jet(thread); |
| jvmtiEventExceptionCatch callback = env->callbacks()->ExceptionCatch; |
| if (callback != NULL) { |
| (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), |
| jem.jni_methodID(), jem.location(), |
| jem.exception()); |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| oop JvmtiExport::jni_GetField_probe(JavaThread *thread, jobject jobj, oop obj, |
| Klass* klass, jfieldID fieldID, bool is_static) { |
| if (*((int *)get_field_access_count_addr()) > 0 && thread->has_last_Java_frame()) { |
| // At least one field access watch is set so we have more work |
| // to do. This wrapper is used by entry points that allow us |
| // to create handles in post_field_access_by_jni(). |
| post_field_access_by_jni(thread, obj, klass, fieldID, is_static); |
| // event posting can block so refetch oop if we were passed a jobj |
| if (jobj != NULL) return JNIHandles::resolve_non_null(jobj); |
| } |
| return obj; |
| } |
| |
| oop JvmtiExport::jni_GetField_probe_nh(JavaThread *thread, jobject jobj, oop obj, |
| Klass* klass, jfieldID fieldID, bool is_static) { |
| if (*((int *)get_field_access_count_addr()) > 0 && thread->has_last_Java_frame()) { |
| // At least one field access watch is set so we have more work |
| // to do. This wrapper is used by "quick" entry points that don't |
| // allow us to create handles in post_field_access_by_jni(). We |
| // override that with a ResetNoHandleMark. |
| ResetNoHandleMark rnhm; |
| post_field_access_by_jni(thread, obj, klass, fieldID, is_static); |
| // event posting can block so refetch oop if we were passed a jobj |
| if (jobj != NULL) return JNIHandles::resolve_non_null(jobj); |
| } |
| return obj; |
| } |
| |
| void JvmtiExport::post_field_access_by_jni(JavaThread *thread, oop obj, |
| Klass* klass, jfieldID fieldID, bool is_static) { |
| // We must be called with a Java context in order to provide reasonable |
| // values for the klazz, method, and location fields. The callers of this |
| // function don't make the call unless there is a Java context. |
| assert(thread->has_last_Java_frame(), "must be called with a Java context"); |
| |
| ResourceMark rm; |
| fieldDescriptor fd; |
| // if get_field_descriptor finds fieldID to be invalid, then we just bail |
| bool valid_fieldID = JvmtiEnv::get_field_descriptor(klass, fieldID, &fd); |
| assert(valid_fieldID == true,"post_field_access_by_jni called with invalid fieldID"); |
| if (!valid_fieldID) return; |
| // field accesses are not watched so bail |
| if (!fd.is_field_access_watched()) return; |
| |
| HandleMark hm(thread); |
| KlassHandle h_klass(thread, klass); |
| Handle h_obj; |
| if (!is_static) { |
| // non-static field accessors have an object, but we need a handle |
| assert(obj != NULL, "non-static needs an object"); |
| h_obj = Handle(thread, obj); |
| } |
| post_field_access(thread, |
| thread->last_frame().interpreter_frame_method(), |
| thread->last_frame().interpreter_frame_bcp(), |
| h_klass, h_obj, fieldID); |
| } |
| |
| void JvmtiExport::post_field_access(JavaThread *thread, Method* method, |
| address location, KlassHandle field_klass, Handle object, jfieldID field) { |
| |
| HandleMark hm(thread); |
| methodHandle mh(thread, method); |
| |
| JvmtiThreadState *state = thread->jvmti_thread_state(); |
| if (state == NULL) { |
| return; |
| } |
| EVT_TRIG_TRACE(JVMTI_EVENT_FIELD_ACCESS, ("JVMTI [%s] Trg Field Access event triggered", |
| JvmtiTrace::safe_get_thread_name(thread))); |
| JvmtiEnvThreadStateIterator it(state); |
| for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { |
| if (ets->is_enabled(JVMTI_EVENT_FIELD_ACCESS)) { |
| EVT_TRACE(JVMTI_EVENT_FIELD_ACCESS, ("JVMTI [%s] Evt Field Access event sent %s.%s @ %d", |
| JvmtiTrace::safe_get_thread_name(thread), |
| (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), |
| (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), |
| location - mh()->code_base() )); |
| |
| JvmtiEnv *env = ets->get_env(); |
| JvmtiLocationEventMark jem(thread, mh, location); |
| jclass field_jclass = jem.to_jclass(field_klass()); |
| jobject field_jobject = jem.to_jobject(object()); |
| JvmtiJavaThreadEventTransition jet(thread); |
| jvmtiEventFieldAccess callback = env->callbacks()->FieldAccess; |
| if (callback != NULL) { |
| (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), |
| jem.jni_methodID(), jem.location(), |
| field_jclass, field_jobject, field); |
| } |
| } |
| } |
| } |
| |
| oop JvmtiExport::jni_SetField_probe(JavaThread *thread, jobject jobj, oop obj, |
| Klass* klass, jfieldID fieldID, bool is_static, |
| char sig_type, jvalue *value) { |
| if (*((int *)get_field_modification_count_addr()) > 0 && thread->has_last_Java_frame()) { |
| // At least one field modification watch is set so we have more work |
| // to do. This wrapper is used by entry points that allow us |
| // to create handles in post_field_modification_by_jni(). |
| post_field_modification_by_jni(thread, obj, klass, fieldID, is_static, sig_type, value); |
| // event posting can block so refetch oop if we were passed a jobj |
| if (jobj != NULL) return JNIHandles::resolve_non_null(jobj); |
| } |
| return obj; |
| } |
| |
| oop JvmtiExport::jni_SetField_probe_nh(JavaThread *thread, jobject jobj, oop obj, |
| Klass* klass, jfieldID fieldID, bool is_static, |
| char sig_type, jvalue *value) { |
| if (*((int *)get_field_modification_count_addr()) > 0 && thread->has_last_Java_frame()) { |
| // At least one field modification watch is set so we have more work |
| // to do. This wrapper is used by "quick" entry points that don't |
| // allow us to create handles in post_field_modification_by_jni(). We |
| // override that with a ResetNoHandleMark. |
| ResetNoHandleMark rnhm; |
| post_field_modification_by_jni(thread, obj, klass, fieldID, is_static, sig_type, value); |
| // event posting can block so refetch oop if we were passed a jobj |
| if (jobj != NULL) return JNIHandles::resolve_non_null(jobj); |
| } |
| return obj; |
| } |
| |
| void JvmtiExport::post_field_modification_by_jni(JavaThread *thread, oop obj, |
| Klass* klass, jfieldID fieldID, bool is_static, |
| char sig_type, jvalue *value) { |
| // We must be called with a Java context in order to provide reasonable |
| // values for the klazz, method, and location fields. The callers of this |
| // function don't make the call unless there is a Java context. |
| assert(thread->has_last_Java_frame(), "must be called with Java context"); |
| |
| ResourceMark rm; |
| fieldDescriptor fd; |
| // if get_field_descriptor finds fieldID to be invalid, then we just bail |
| bool valid_fieldID = JvmtiEnv::get_field_descriptor(klass, fieldID, &fd); |
| assert(valid_fieldID == true,"post_field_modification_by_jni called with invalid fieldID"); |
| if (!valid_fieldID) return; |
| // field modifications are not watched so bail |
| if (!fd.is_field_modification_watched()) return; |
| |
| HandleMark hm(thread); |
| |
| Handle h_obj; |
| if (!is_static) { |
| // non-static field accessors have an object, but we need a handle |
| assert(obj != NULL, "non-static needs an object"); |
| h_obj = Handle(thread, obj); |
| } |
| KlassHandle h_klass(thread, klass); |
| post_field_modification(thread, |
| thread->last_frame().interpreter_frame_method(), |
| thread->last_frame().interpreter_frame_bcp(), |
| h_klass, h_obj, fieldID, sig_type, value); |
| } |
| |
| void JvmtiExport::post_raw_field_modification(JavaThread *thread, Method* method, |
| address location, KlassHandle field_klass, Handle object, jfieldID field, |
| char sig_type, jvalue *value) { |
| |
| if (sig_type == 'I' || sig_type == 'Z' || sig_type == 'B' || sig_type == 'C' || sig_type == 'S') { |
| // 'I' instructions are used for byte, char, short and int. |
| // determine which it really is, and convert |
| fieldDescriptor fd; |
| bool found = JvmtiEnv::get_field_descriptor(field_klass(), field, &fd); |
| // should be found (if not, leave as is) |
| if (found) { |
| jint ival = value->i; |
| // convert value from int to appropriate type |
| switch (fd.field_type()) { |
| case T_BOOLEAN: |
| sig_type = 'Z'; |
| value->i = 0; // clear it |
| value->z = (jboolean)ival; |
| break; |
| case T_BYTE: |
| sig_type = 'B'; |
| value->i = 0; // clear it |
| value->b = (jbyte)ival; |
| break; |
| case T_CHAR: |
| sig_type = 'C'; |
| value->i = 0; // clear it |
| value->c = (jchar)ival; |
| break; |
| case T_SHORT: |
| sig_type = 'S'; |
| value->i = 0; // clear it |
| value->s = (jshort)ival; |
| break; |
| case T_INT: |
| // nothing to do |
| break; |
| default: |
| // this is an integer instruction, should be one of above |
| ShouldNotReachHere(); |
| break; |
| } |
| } |
| } |
| |
| assert(sig_type != '[', "array should have sig_type == 'L'"); |
| bool handle_created = false; |
| |
| // convert oop to JNI handle. |
| if (sig_type == 'L') { |
| handle_created = true; |
| value->l = (jobject)JNIHandles::make_local(thread, (oop)value->l); |
| } |
| |
| post_field_modification(thread, method, location, field_klass, object, field, sig_type, value); |
| |
| // Destroy the JNI handle allocated above. |
| if (handle_created) { |
| JNIHandles::destroy_local(value->l); |
| } |
| } |
| |
| void JvmtiExport::post_field_modification(JavaThread *thread, Method* method, |
| address location, KlassHandle field_klass, Handle object, jfieldID field, |
| char sig_type, jvalue *value_ptr) { |
| |
| HandleMark hm(thread); |
| methodHandle mh(thread, method); |
| |
| JvmtiThreadState *state = thread->jvmti_thread_state(); |
| if (state == NULL) { |
| return; |
| } |
| EVT_TRIG_TRACE(JVMTI_EVENT_FIELD_MODIFICATION, |
| ("JVMTI [%s] Trg Field Modification event triggered", |
| JvmtiTrace::safe_get_thread_name(thread))); |
| |
| JvmtiEnvThreadStateIterator it(state); |
| for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { |
| if (ets->is_enabled(JVMTI_EVENT_FIELD_MODIFICATION)) { |
| EVT_TRACE(JVMTI_EVENT_FIELD_MODIFICATION, |
| ("JVMTI [%s] Evt Field Modification event sent %s.%s @ %d", |
| JvmtiTrace::safe_get_thread_name(thread), |
| (mh() == NULL) ? "NULL" : mh()->klass_name()->as_C_string(), |
| (mh() == NULL) ? "NULL" : mh()->name()->as_C_string(), |
| location - mh()->code_base() )); |
| |
| JvmtiEnv *env = ets->get_env(); |
| JvmtiLocationEventMark jem(thread, mh, location); |
| jclass field_jclass = jem.to_jclass(field_klass()); |
| jobject field_jobject = jem.to_jobject(object()); |
| JvmtiJavaThreadEventTransition jet(thread); |
| jvmtiEventFieldModification callback = env->callbacks()->FieldModification; |
| if (callback != NULL) { |
| (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), |
| jem.jni_methodID(), jem.location(), |
| field_jclass, field_jobject, field, sig_type, *value_ptr); |
| } |
| } |
| } |
| } |
| |
| void JvmtiExport::post_native_method_bind(Method* method, address* function_ptr) { |
| JavaThread* thread = JavaThread::current(); |
| assert(thread->thread_state() == _thread_in_vm, "must be in vm state"); |
| |
| HandleMark hm(thread); |
| methodHandle mh(thread, method); |
| |
| EVT_TRIG_TRACE(JVMTI_EVENT_NATIVE_METHOD_BIND, ("JVMTI [%s] Trg Native Method Bind event triggered", |
| JvmtiTrace::safe_get_thread_name(thread))); |
| |
| if (JvmtiEventController::is_enabled(JVMTI_EVENT_NATIVE_METHOD_BIND)) { |
| JvmtiEnvIterator it; |
| for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { |
| if (env->is_enabled(JVMTI_EVENT_NATIVE_METHOD_BIND)) { |
| EVT_TRACE(JVMTI_EVENT_NATIVE_METHOD_BIND, ("JVMTI [%s] Evt Native Method Bind event sent", |
| JvmtiTrace::safe_get_thread_name(thread) )); |
| |
| JvmtiMethodEventMark jem(thread, mh); |
| JvmtiJavaThreadEventTransition jet(thread); |
| JNIEnv* jni_env = JvmtiEnv::get_phase() == JVMTI_PHASE_PRIMORDIAL? NULL : jem.jni_env(); |
| jvmtiEventNativeMethodBind callback = env->callbacks()->NativeMethodBind; |
| if (callback != NULL) { |
| (*callback)(env->jvmti_external(), jni_env, jem.jni_thread(), |
| jem.jni_methodID(), (void*)(*function_ptr), (void**)function_ptr); |
| } |
| } |
| } |
| } |
| } |
| |
| // Returns a record containing inlining information for the given nmethod |
| jvmtiCompiledMethodLoadInlineRecord* create_inline_record(nmethod* nm) { |
| jint numstackframes = 0; |
| jvmtiCompiledMethodLoadInlineRecord* record = (jvmtiCompiledMethodLoadInlineRecord*)NEW_RESOURCE_OBJ(jvmtiCompiledMethodLoadInlineRecord); |
| record->header.kind = JVMTI_CMLR_INLINE_INFO; |
| record->header.next = NULL; |
| record->header.majorinfoversion = JVMTI_CMLR_MAJOR_VERSION_1; |
| record->header.minorinfoversion = JVMTI_CMLR_MINOR_VERSION_0; |
| record->numpcs = 0; |
| for(PcDesc* p = nm->scopes_pcs_begin(); p < nm->scopes_pcs_end(); p++) { |
| if(p->scope_decode_offset() == DebugInformationRecorder::serialized_null) continue; |
| record->numpcs++; |
| } |
| record->pcinfo = (PCStackInfo*)(NEW_RESOURCE_ARRAY(PCStackInfo, record->numpcs)); |
| int scope = 0; |
| for(PcDesc* p = nm->scopes_pcs_begin(); p < nm->scopes_pcs_end(); p++) { |
| if(p->scope_decode_offset() == DebugInformationRecorder::serialized_null) continue; |
| void* pc_address = (void*)p->real_pc(nm); |
| assert(pc_address != NULL, "pc_address must be non-null"); |
| record->pcinfo[scope].pc = pc_address; |
| numstackframes=0; |
| for(ScopeDesc* sd = nm->scope_desc_at(p->real_pc(nm));sd != NULL;sd = sd->sender()) { |
| numstackframes++; |
| } |
| assert(numstackframes != 0, "numstackframes must be nonzero."); |
| record->pcinfo[scope].methods = (jmethodID *)NEW_RESOURCE_ARRAY(jmethodID, numstackframes); |
| record->pcinfo[scope].bcis = (jint *)NEW_RESOURCE_ARRAY(jint, numstackframes); |
| record->pcinfo[scope].numstackframes = numstackframes; |
| int stackframe = 0; |
| for(ScopeDesc* sd = nm->scope_desc_at(p->real_pc(nm));sd != NULL;sd = sd->sender()) { |
| // sd->method() can be NULL for stubs but not for nmethods. To be completely robust, include an assert that we should never see a null sd->method() |
| assert(sd->method() != NULL, "sd->method() cannot be null."); |
| record->pcinfo[scope].methods[stackframe] = sd->method()->jmethod_id(); |
| record->pcinfo[scope].bcis[stackframe] = sd->bci(); |
| stackframe++; |
| } |
| scope++; |
| } |
| return record; |
| } |
| |
| void JvmtiExport::post_compiled_method_load(nmethod *nm) { |
| JavaThread* thread = JavaThread::current(); |
| |
| EVT_TRIG_TRACE(JVMTI_EVENT_COMPILED_METHOD_LOAD, |
| ("JVMTI [%s] method compile load event triggered", |
| JvmtiTrace::safe_get_thread_name(thread))); |
| |
| JvmtiEnvIterator it; |
| for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { |
| if (env->is_enabled(JVMTI_EVENT_COMPILED_METHOD_LOAD)) { |
| |
| EVT_TRACE(JVMTI_EVENT_COMPILED_METHOD_LOAD, |
| ("JVMTI [%s] class compile method load event sent %s.%s ", |
| JvmtiTrace::safe_get_thread_name(thread), |
| (nm->method() == NULL) ? "NULL" : nm->method()->klass_name()->as_C_string(), |
| (nm->method() == NULL) ? "NULL" : nm->method()->name()->as_C_string())); |
| ResourceMark rm(thread); |
| HandleMark hm(thread); |
| |
| // Add inlining information |
| jvmtiCompiledMethodLoadInlineRecord* inlinerecord = create_inline_record(nm); |
| // Pass inlining information through the void pointer |
| JvmtiCompiledMethodLoadEventMark jem(thread, nm, inlinerecord); |
| JvmtiJavaThreadEventTransition jet(thread); |
| jvmtiEventCompiledMethodLoad callback = env->callbacks()->CompiledMethodLoad; |
| if (callback != NULL) { |
| (*callback)(env->jvmti_external(), jem.jni_methodID(), |
| jem.code_size(), jem.code_data(), jem.map_length(), |
| jem.map(), jem.compile_info()); |
| } |
| } |
| } |
| } |
| |
| |
| // post a COMPILED_METHOD_LOAD event for a given environment |
| void JvmtiExport::post_compiled_method_load(JvmtiEnv* env, const jmethodID method, const jint length, |
| const void *code_begin, const jint map_length, |
| const jvmtiAddrLocationMap* map) |
| { |
| JavaThread* thread = JavaThread::current(); |
| EVT_TRIG_TRACE(JVMTI_EVENT_COMPILED_METHOD_LOAD, |
| ("JVMTI [%s] method compile load event triggered (by GenerateEvents)", |
| JvmtiTrace::safe_get_thread_name(thread))); |
| if (env->is_enabled(JVMTI_EVENT_COMPILED_METHOD_LOAD)) { |
| |
| EVT_TRACE(JVMTI_EVENT_COMPILED_METHOD_LOAD, |
| ("JVMTI [%s] class compile method load event sent (by GenerateEvents), jmethodID=" PTR_FORMAT, |
| JvmtiTrace::safe_get_thread_name(thread), method)); |
| |
| JvmtiEventMark jem(thread); |
| JvmtiJavaThreadEventTransition jet(thread); |
| jvmtiEventCompiledMethodLoad callback = env->callbacks()->CompiledMethodLoad; |
| if (callback != NULL) { |
| (*callback)(env->jvmti_external(), method, |
| length, code_begin, map_length, |
| map, NULL); |
| } |
| } |
| } |
| |
| void JvmtiExport::post_dynamic_code_generated_internal(const char *name, const void *code_begin, const void *code_end) { |
| assert(name != NULL && name[0] != '\0', "sanity check"); |
| |
| JavaThread* thread = JavaThread::current(); |
| // In theory everyone coming thru here is in_vm but we need to be certain |
| // because a callee will do a vm->native transition |
| ThreadInVMfromUnknown __tiv; |
| |
| EVT_TRIG_TRACE(JVMTI_EVENT_DYNAMIC_CODE_GENERATED, |
| ("JVMTI [%s] method dynamic code generated event triggered", |
| JvmtiTrace::safe_get_thread_name(thread))); |
| JvmtiEnvIterator it; |
| for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { |
| if (env->is_enabled(JVMTI_EVENT_DYNAMIC_CODE_GENERATED)) { |
| EVT_TRACE(JVMTI_EVENT_DYNAMIC_CODE_GENERATED, |
| ("JVMTI [%s] dynamic code generated event sent for %s", |
| JvmtiTrace::safe_get_thread_name(thread), name)); |
| JvmtiEventMark jem(thread); |
| JvmtiJavaThreadEventTransition jet(thread); |
| jint length = (jint)pointer_delta(code_end, code_begin, sizeof(char)); |
| jvmtiEventDynamicCodeGenerated callback = env->callbacks()->DynamicCodeGenerated; |
| if (callback != NULL) { |
| (*callback)(env->jvmti_external(), name, (void*)code_begin, length); |
| } |
| } |
| } |
| } |
| |
| void JvmtiExport::post_dynamic_code_generated(const char *name, const void *code_begin, const void *code_end) { |
| jvmtiPhase phase = JvmtiEnv::get_phase(); |
| if (phase == JVMTI_PHASE_PRIMORDIAL || phase == JVMTI_PHASE_START) { |
| post_dynamic_code_generated_internal(name, code_begin, code_end); |
| } else { |
| // It may not be safe to post the event from this thread. Defer all |
| // postings to the service thread so that it can perform them in a safe |
| // context and in-order. |
| MutexLockerEx ml(Service_lock, Mutex::_no_safepoint_check_flag); |
| JvmtiDeferredEvent event = JvmtiDeferredEvent::dynamic_code_generated_event( |
| name, code_begin, code_end); |
| JvmtiDeferredEventQueue::enqueue(event); |
| } |
| } |
| |
| |
| // post a DYNAMIC_CODE_GENERATED event for a given environment |
| // used by GenerateEvents |
| void JvmtiExport::post_dynamic_code_generated(JvmtiEnv* env, const char *name, |
| const void *code_begin, const void *code_end) |
| { |
| JavaThread* thread = JavaThread::current(); |
| EVT_TRIG_TRACE(JVMTI_EVENT_DYNAMIC_CODE_GENERATED, |
| ("JVMTI [%s] dynamic code generated event triggered (by GenerateEvents)", |
| JvmtiTrace::safe_get_thread_name(thread))); |
| if (env->is_enabled(JVMTI_EVENT_DYNAMIC_CODE_GENERATED)) { |
| EVT_TRACE(JVMTI_EVENT_DYNAMIC_CODE_GENERATED, |
| ("JVMTI [%s] dynamic code generated event sent for %s", |
| JvmtiTrace::safe_get_thread_name(thread), name)); |
| JvmtiEventMark jem(thread); |
| JvmtiJavaThreadEventTransition jet(thread); |
| jint length = (jint)pointer_delta(code_end, code_begin, sizeof(char)); |
| jvmtiEventDynamicCodeGenerated callback = env->callbacks()->DynamicCodeGenerated; |
| if (callback != NULL) { |
| (*callback)(env->jvmti_external(), name, (void*)code_begin, length); |
| } |
| } |
| } |
| |
| // post a DynamicCodeGenerated event while holding locks in the VM. |
| void JvmtiExport::post_dynamic_code_generated_while_holding_locks(const char* name, |
| address code_begin, address code_end) |
| { |
| // register the stub with the current dynamic code event collector |
| JvmtiThreadState* state = JvmtiThreadState::state_for(JavaThread::current()); |
| // state can only be NULL if the current thread is exiting which |
| // should not happen since we're trying to post an event |
| guarantee(state != NULL, "attempt to register stub via an exiting thread"); |
| JvmtiDynamicCodeEventCollector* collector = state->get_dynamic_code_event_collector(); |
| guarantee(collector != NULL, "attempt to register stub without event collector"); |
| collector->register_stub(name, code_begin, code_end); |
| } |
| |
| // Collect all the vm internally allocated objects which are visible to java world |
| void JvmtiExport::record_vm_internal_object_allocation(oop obj) { |
| Thread* thread = ThreadLocalStorage::thread(); |
| if (thread != NULL && thread->is_Java_thread()) { |
| // Can not take safepoint here. |
| No_Safepoint_Verifier no_sfpt; |
| // Can not take safepoint here so can not use state_for to get |
| // jvmti thread state. |
| JvmtiThreadState *state = ((JavaThread*)thread)->jvmti_thread_state(); |
| if (state != NULL ) { |
| // state is non NULL when VMObjectAllocEventCollector is enabled. |
| JvmtiVMObjectAllocEventCollector *collector; |
| collector = state->get_vm_object_alloc_event_collector(); |
| if (collector != NULL && collector->is_enabled()) { |
| // Don't record classes as these will be notified via the ClassLoad |
| // event. |
| if (obj->klass() != SystemDictionary::Class_klass()) { |
| collector->record_allocation(obj); |
| } |
| } |
| } |
| } |
| } |
| |
| void JvmtiExport::post_garbage_collection_finish() { |
| Thread *thread = Thread::current(); // this event is posted from VM-Thread. |
| EVT_TRIG_TRACE(JVMTI_EVENT_GARBAGE_COLLECTION_FINISH, |
| ("JVMTI [%s] garbage collection finish event triggered", |
| JvmtiTrace::safe_get_thread_name(thread))); |
| JvmtiEnvIterator it; |
| for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { |
| if (env->is_enabled(JVMTI_EVENT_GARBAGE_COLLECTION_FINISH)) { |
| EVT_TRACE(JVMTI_EVENT_GARBAGE_COLLECTION_FINISH, |
| ("JVMTI [%s] garbage collection finish event sent ", |
| JvmtiTrace::safe_get_thread_name(thread))); |
| JvmtiThreadEventTransition jet(thread); |
| // JNIEnv is NULL here because this event is posted from VM Thread |
| jvmtiEventGarbageCollectionFinish callback = env->callbacks()->GarbageCollectionFinish; |
| if (callback != NULL) { |
| (*callback)(env->jvmti_external()); |
| } |
| } |
| } |
| } |
| |
| void JvmtiExport::post_garbage_collection_start() { |
| Thread* thread = Thread::current(); // this event is posted from vm-thread. |
| EVT_TRIG_TRACE(JVMTI_EVENT_GARBAGE_COLLECTION_START, |
| ("JVMTI [%s] garbage collection start event triggered", |
| JvmtiTrace::safe_get_thread_name(thread))); |
| JvmtiEnvIterator it; |
| for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { |
| if (env->is_enabled(JVMTI_EVENT_GARBAGE_COLLECTION_START)) { |
| EVT_TRACE(JVMTI_EVENT_GARBAGE_COLLECTION_START, |
| ("JVMTI [%s] garbage collection start event sent ", |
| JvmtiTrace::safe_get_thread_name(thread))); |
| JvmtiThreadEventTransition jet(thread); |
| // JNIEnv is NULL here because this event is posted from VM Thread |
| jvmtiEventGarbageCollectionStart callback = env->callbacks()->GarbageCollectionStart; |
| if (callback != NULL) { |
| (*callback)(env->jvmti_external()); |
| } |
| } |
| } |
| } |
| |
| void JvmtiExport::post_data_dump() { |
| Thread *thread = Thread::current(); |
| EVT_TRIG_TRACE(JVMTI_EVENT_DATA_DUMP_REQUEST, |
| ("JVMTI [%s] data dump request event triggered", |
| JvmtiTrace::safe_get_thread_name(thread))); |
| JvmtiEnvIterator it; |
| for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { |
| if (env->is_enabled(JVMTI_EVENT_DATA_DUMP_REQUEST)) { |
| EVT_TRACE(JVMTI_EVENT_DATA_DUMP_REQUEST, |
| ("JVMTI [%s] data dump request event sent ", |
| JvmtiTrace::safe_get_thread_name(thread))); |
| JvmtiThreadEventTransition jet(thread); |
| // JNIEnv is NULL here because this event is posted from VM Thread |
| jvmtiEventDataDumpRequest callback = env->callbacks()->DataDumpRequest; |
| if (callback != NULL) { |
| (*callback)(env->jvmti_external()); |
| } |
| } |
| } |
| } |
| |
| void JvmtiExport::post_monitor_contended_enter(JavaThread *thread, ObjectMonitor *obj_mntr) { |
| oop object = (oop)obj_mntr->object(); |
| if (!ServiceUtil::visible_oop(object)) { |
| // Ignore monitor contended enter for vm internal object. |
| return; |
| } |
| JvmtiThreadState *state = thread->jvmti_thread_state(); |
| if (state == NULL) { |
| return; |
| } |
| |
| HandleMark hm(thread); |
| Handle h(thread, object); |
| |
| EVT_TRIG_TRACE(JVMTI_EVENT_MONITOR_CONTENDED_ENTER, |
| ("JVMTI [%s] montior contended enter event triggered", |
| JvmtiTrace::safe_get_thread_name(thread))); |
| |
| JvmtiEnvThreadStateIterator it(state); |
| for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { |
| if (ets->is_enabled(JVMTI_EVENT_MONITOR_CONTENDED_ENTER)) { |
| EVT_TRACE(JVMTI_EVENT_MONITOR_CONTENDED_ENTER, |
| ("JVMTI [%s] monitor contended enter event sent", |
| JvmtiTrace::safe_get_thread_name(thread))); |
| JvmtiMonitorEventMark jem(thread, h()); |
| JvmtiEnv *env = ets->get_env(); |
| JvmtiThreadEventTransition jet(thread); |
| jvmtiEventMonitorContendedEnter callback = env->callbacks()->MonitorContendedEnter; |
| if (callback != NULL) { |
| (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_object()); |
| } |
| } |
| } |
| } |
| |
| void JvmtiExport::post_monitor_contended_entered(JavaThread *thread, ObjectMonitor *obj_mntr) { |
| oop object = (oop)obj_mntr->object(); |
| if (!ServiceUtil::visible_oop(object)) { |
| // Ignore monitor contended entered for vm internal object. |
| return; |
| } |
| JvmtiThreadState *state = thread->jvmti_thread_state(); |
| if (state == NULL) { |
| return; |
| } |
| |
| HandleMark hm(thread); |
| Handle h(thread, object); |
| |
| EVT_TRIG_TRACE(JVMTI_EVENT_MONITOR_CONTENDED_ENTERED, |
| ("JVMTI [%s] montior contended entered event triggered", |
| JvmtiTrace::safe_get_thread_name(thread))); |
| |
| JvmtiEnvThreadStateIterator it(state); |
| for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { |
| if (ets->is_enabled(JVMTI_EVENT_MONITOR_CONTENDED_ENTERED)) { |
| EVT_TRACE(JVMTI_EVENT_MONITOR_CONTENDED_ENTERED, |
| ("JVMTI [%s] monitor contended enter event sent", |
| JvmtiTrace::safe_get_thread_name(thread))); |
| JvmtiMonitorEventMark jem(thread, h()); |
| JvmtiEnv *env = ets->get_env(); |
| JvmtiThreadEventTransition jet(thread); |
| jvmtiEventMonitorContendedEntered callback = env->callbacks()->MonitorContendedEntered; |
| if (callback != NULL) { |
| (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), jem.jni_object()); |
| } |
| } |
| } |
| } |
| |
| void JvmtiExport::post_monitor_wait(JavaThread *thread, oop object, |
| jlong timeout) { |
| JvmtiThreadState *state = thread->jvmti_thread_state(); |
| if (state == NULL) { |
| return; |
| } |
| |
| HandleMark hm(thread); |
| Handle h(thread, object); |
| |
| EVT_TRIG_TRACE(JVMTI_EVENT_MONITOR_WAIT, |
| ("JVMTI [%s] montior wait event triggered", |
| JvmtiTrace::safe_get_thread_name(thread))); |
| |
| JvmtiEnvThreadStateIterator it(state); |
| for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { |
| if (ets->is_enabled(JVMTI_EVENT_MONITOR_WAIT)) { |
| EVT_TRACE(JVMTI_EVENT_MONITOR_WAIT, |
| ("JVMTI [%s] monitor wait event sent ", |
| JvmtiTrace::safe_get_thread_name(thread))); |
| JvmtiMonitorEventMark jem(thread, h()); |
| JvmtiEnv *env = ets->get_env(); |
| JvmtiThreadEventTransition jet(thread); |
| jvmtiEventMonitorWait callback = env->callbacks()->MonitorWait; |
| if (callback != NULL) { |
| (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), |
| jem.jni_object(), timeout); |
| } |
| } |
| } |
| } |
| |
| void JvmtiExport::post_monitor_waited(JavaThread *thread, ObjectMonitor *obj_mntr, jboolean timed_out) { |
| oop object = (oop)obj_mntr->object(); |
| if (!ServiceUtil::visible_oop(object)) { |
| // Ignore monitor waited for vm internal object. |
| return; |
| } |
| JvmtiThreadState *state = thread->jvmti_thread_state(); |
| if (state == NULL) { |
| return; |
| } |
| |
| HandleMark hm(thread); |
| Handle h(thread, object); |
| |
| EVT_TRIG_TRACE(JVMTI_EVENT_MONITOR_WAITED, |
| ("JVMTI [%s] montior waited event triggered", |
| JvmtiTrace::safe_get_thread_name(thread))); |
| |
| JvmtiEnvThreadStateIterator it(state); |
| for (JvmtiEnvThreadState* ets = it.first(); ets != NULL; ets = it.next(ets)) { |
| if (ets->is_enabled(JVMTI_EVENT_MONITOR_WAITED)) { |
| EVT_TRACE(JVMTI_EVENT_MONITOR_WAITED, |
| ("JVMTI [%s] monitor waited event sent ", |
| JvmtiTrace::safe_get_thread_name(thread))); |
| JvmtiMonitorEventMark jem(thread, h()); |
| JvmtiEnv *env = ets->get_env(); |
| JvmtiThreadEventTransition jet(thread); |
| jvmtiEventMonitorWaited callback = env->callbacks()->MonitorWaited; |
| if (callback != NULL) { |
| (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), |
| jem.jni_object(), timed_out); |
| } |
| } |
| } |
| } |
| |
| |
| void JvmtiExport::post_vm_object_alloc(JavaThread *thread, oop object) { |
| EVT_TRIG_TRACE(JVMTI_EVENT_VM_OBJECT_ALLOC, ("JVMTI [%s] Trg vm object alloc triggered", |
| JvmtiTrace::safe_get_thread_name(thread))); |
| if (object == NULL) { |
| return; |
| } |
| HandleMark hm(thread); |
| Handle h(thread, object); |
| JvmtiEnvIterator it; |
| for (JvmtiEnv* env = it.first(); env != NULL; env = it.next(env)) { |
| if (env->is_enabled(JVMTI_EVENT_VM_OBJECT_ALLOC)) { |
| EVT_TRACE(JVMTI_EVENT_VM_OBJECT_ALLOC, ("JVMTI [%s] Evt vmobject alloc sent %s", |
| JvmtiTrace::safe_get_thread_name(thread), |
| object==NULL? "NULL" : java_lang_Class::as_Klass(object)->external_name())); |
| |
| JvmtiVMObjectAllocEventMark jem(thread, h()); |
| JvmtiJavaThreadEventTransition jet(thread); |
| jvmtiEventVMObjectAlloc callback = env->callbacks()->VMObjectAlloc; |
| if (callback != NULL) { |
| (*callback)(env->jvmti_external(), jem.jni_env(), jem.jni_thread(), |
| jem.jni_jobject(), jem.jni_class(), jem.size()); |
| } |
| } |
| } |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| void JvmtiExport::cleanup_thread(JavaThread* thread) { |
| assert(JavaThread::current() == thread, "thread is not current"); |
| MutexLocker mu(JvmtiThreadState_lock); |
| |
| if (thread->jvmti_thread_state() != NULL) { |
| // This has to happen after the thread state is removed, which is |
| // why it is not in post_thread_end_event like its complement |
| // Maybe both these functions should be rolled into the posts? |
| JvmtiEventController::thread_ended(thread); |
| } |
| } |
| |
| void JvmtiExport::clear_detected_exception(JavaThread* thread) { |
| assert(JavaThread::current() == thread, "thread is not current"); |
| |
| JvmtiThreadState* state = thread->jvmti_thread_state(); |
| if (state != NULL) { |
| state->clear_exception_detected(); |
| } |
| } |
| |
| void JvmtiExport::oops_do(OopClosure* f) { |
| JvmtiCurrentBreakpoints::oops_do(f); |
| JvmtiVMObjectAllocEventCollector::oops_do_for_all_threads(f); |
| } |
| |
| void JvmtiExport::weak_oops_do(BoolObjectClosure* is_alive, OopClosure* f) { |
| JvmtiTagMap::weak_oops_do(is_alive, f); |
| } |
| |
| void JvmtiExport::gc_epilogue() { |
| JvmtiCurrentBreakpoints::gc_epilogue(); |
| } |
| |
| // Onload raw monitor transition. |
| void JvmtiExport::transition_pending_onload_raw_monitors() { |
| JvmtiPendingMonitors::transition_raw_monitors(); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| // type for the Agent_OnAttach entry point |
| extern "C" { |
| typedef jint (JNICALL *OnAttachEntry_t)(JavaVM*, char *, void *); |
| } |
| |
| jint JvmtiExport::load_agent_library(AttachOperation* op, outputStream* st) { |
| char ebuf[1024]; |
| char buffer[JVM_MAXPATHLEN]; |
| void* library = NULL; |
| jint result = JNI_ERR; |
| const char *on_attach_symbols[] = AGENT_ONATTACH_SYMBOLS; |
| size_t num_symbol_entries = ARRAY_SIZE(on_attach_symbols); |
| |
| // get agent name and options |
| const char* agent = op->arg(0); |
| const char* absParam = op->arg(1); |
| const char* options = op->arg(2); |
| |
| // The abs paramter should be "true" or "false" |
| bool is_absolute_path = (absParam != NULL) && (strcmp(absParam,"true")==0); |
| |
| // Initially marked as invalid. It will be set to valid if we can find the agent |
| AgentLibrary *agent_lib = new AgentLibrary(agent, options, is_absolute_path, NULL); |
| |
| // Check for statically linked in agent. If not found then if the path is |
| // absolute we attempt to load the library. Otherwise we try to load it |
| // from the standard dll directory. |
| |
| if (!os::find_builtin_agent(agent_lib, on_attach_symbols, num_symbol_entries)) { |
| if (is_absolute_path) { |
| library = os::dll_load(agent, ebuf, sizeof ebuf); |
| } else { |
| // Try to load the agent from the standard dll directory |
| if (os::dll_build_name(buffer, sizeof(buffer), Arguments::get_dll_dir(), |
| agent)) { |
| library = os::dll_load(buffer, ebuf, sizeof ebuf); |
| } |
| if (library == NULL) { |
| // not found - try local path |
| char ns[1] = {0}; |
| if (os::dll_build_name(buffer, sizeof(buffer), ns, agent)) { |
| library = os::dll_load(buffer, ebuf, sizeof ebuf); |
| } |
| } |
| } |
| if (library != NULL) { |
| agent_lib->set_os_lib(library); |
| agent_lib->set_valid(); |
| } |
| } |
| // If the library was loaded then we attempt to invoke the Agent_OnAttach |
| // function |
| if (agent_lib->valid()) { |
| // Lookup the Agent_OnAttach function |
| OnAttachEntry_t on_attach_entry = NULL; |
| on_attach_entry = CAST_TO_FN_PTR(OnAttachEntry_t, |
| os::find_agent_function(agent_lib, false, on_attach_symbols, num_symbol_entries)); |
| if (on_attach_entry == NULL) { |
| // Agent_OnAttach missing - unload library |
| if (!agent_lib->is_static_lib()) { |
| os::dll_unload(library); |
| } |
| delete agent_lib; |
| } else { |
| // Invoke the Agent_OnAttach function |
| JavaThread* THREAD = JavaThread::current(); |
| { |
| extern struct JavaVM_ main_vm; |
| JvmtiThreadEventMark jem(THREAD); |
| JvmtiJavaThreadEventTransition jet(THREAD); |
| |
| result = (*on_attach_entry)(&main_vm, (char*)options, NULL); |
| } |
| |
| // Agent_OnAttach may have used JNI |
| if (HAS_PENDING_EXCEPTION) { |
| CLEAR_PENDING_EXCEPTION; |
| } |
| |
| // If OnAttach returns JNI_OK then we add it to the list of |
| // agent libraries so that we can call Agent_OnUnload later. |
| if (result == JNI_OK) { |
| Arguments::add_loaded_agent(agent_lib); |
| } else { |
| delete agent_lib; |
| } |
| |
| // Agent_OnAttach executed so completion status is JNI_OK |
| st->print_cr("%d", result); |
| result = JNI_OK; |
| } |
| } |
| return result; |
| } |
| |
| //////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| // Setup current current thread for event collection. |
| void JvmtiEventCollector::setup_jvmti_thread_state() { |
| // set this event collector to be the current one. |
| JvmtiThreadState* state = JvmtiThreadState::state_for(JavaThread::current()); |
| // state can only be NULL if the current thread is exiting which |
| // should not happen since we're trying to configure for event collection |
| guarantee(state != NULL, "exiting thread called setup_jvmti_thread_state"); |
| if (is_vm_object_alloc_event()) { |
| _prev = state->get_vm_object_alloc_event_collector(); |
| state->set_vm_object_alloc_event_collector((JvmtiVMObjectAllocEventCollector *)this); |
| } else if (is_dynamic_code_event()) { |
| _prev = state->get_dynamic_code_event_collector(); |
| state->set_dynamic_code_event_collector((JvmtiDynamicCodeEventCollector *)this); |
| } |
| } |
| |
| // Unset current event collection in this thread and reset it with previous |
| // collector. |
| void JvmtiEventCollector::unset_jvmti_thread_state() { |
| JvmtiThreadState* state = JavaThread::current()->jvmti_thread_state(); |
| if (state != NULL) { |
| // restore the previous event collector (if any) |
| if (is_vm_object_alloc_event()) { |
| if (state->get_vm_object_alloc_event_collector() == this) { |
| state->set_vm_object_alloc_event_collector((JvmtiVMObjectAllocEventCollector *)_prev); |
| } else { |
| // this thread's jvmti state was created during the scope of |
| // the event collector. |
| } |
| } else { |
| if (is_dynamic_code_event()) { |
| if (state->get_dynamic_code_event_collector() == this) { |
| state->set_dynamic_code_event_collector((JvmtiDynamicCodeEventCollector *)_prev); |
| } else { |
| // this thread's jvmti state was created during the scope of |
| // the event collector. |
| } |
| } |
| } |
| } |
| } |
| |
| // create the dynamic code event collector |
| JvmtiDynamicCodeEventCollector::JvmtiDynamicCodeEventCollector() : _code_blobs(NULL) { |
| if (JvmtiExport::should_post_dynamic_code_generated()) { |
| setup_jvmti_thread_state(); |
| } |
| } |
| |
| // iterate over any code blob descriptors collected and post a |
| // DYNAMIC_CODE_GENERATED event to the profiler. |
| JvmtiDynamicCodeEventCollector::~JvmtiDynamicCodeEventCollector() { |
| assert(!JavaThread::current()->owns_locks(), "all locks must be released to post deferred events"); |
| // iterate over any code blob descriptors that we collected |
| if (_code_blobs != NULL) { |
| for (int i=0; i<_code_blobs->length(); i++) { |
| JvmtiCodeBlobDesc* blob = _code_blobs->at(i); |
| JvmtiExport::post_dynamic_code_generated(blob->name(), blob->code_begin(), blob->code_end()); |
| FreeHeap(blob); |
| } |
| delete _code_blobs; |
| } |
| unset_jvmti_thread_state(); |
| } |
| |
| // register a stub |
| void JvmtiDynamicCodeEventCollector::register_stub(const char* name, address start, address end) { |
| if (_code_blobs == NULL) { |
| _code_blobs = new (ResourceObj::C_HEAP, mtInternal) GrowableArray<JvmtiCodeBlobDesc*>(1,true); |
| } |
| _code_blobs->append(new JvmtiCodeBlobDesc(name, start, end)); |
| } |
| |
| // Setup current thread to record vm allocated objects. |
| JvmtiVMObjectAllocEventCollector::JvmtiVMObjectAllocEventCollector() : _allocated(NULL) { |
| if (JvmtiExport::should_post_vm_object_alloc()) { |
| _enable = true; |
| setup_jvmti_thread_state(); |
| } else { |
| _enable = false; |
| } |
| } |
| |
| // Post vm_object_alloc event for vm allocated objects visible to java |
| // world. |
| JvmtiVMObjectAllocEventCollector::~JvmtiVMObjectAllocEventCollector() { |
| if (_allocated != NULL) { |
| set_enabled(false); |
| for (int i = 0; i < _allocated->length(); i++) { |
| oop obj = _allocated->at(i); |
| if (ServiceUtil::visible_oop(obj)) { |
| JvmtiExport::post_vm_object_alloc(JavaThread::current(), obj); |
| } |
| } |
| delete _allocated; |
| } |
| unset_jvmti_thread_state(); |
| } |
| |
| void JvmtiVMObjectAllocEventCollector::record_allocation(oop obj) { |
| assert(is_enabled(), "VM object alloc event collector is not enabled"); |
| if (_allocated == NULL) { |
| _allocated = new (ResourceObj::C_HEAP, mtInternal) GrowableArray<oop>(1, true); |
| } |
| _allocated->push(obj); |
| } |
| |
| // GC support. |
| void JvmtiVMObjectAllocEventCollector::oops_do(OopClosure* f) { |
| if (_allocated != NULL) { |
| for(int i=_allocated->length() - 1; i >= 0; i--) { |
| if (_allocated->at(i) != NULL) { |
| f->do_oop(_allocated->adr_at(i)); |
| } |
| } |
| } |
| } |
| |
| void JvmtiVMObjectAllocEventCollector::oops_do_for_all_threads(OopClosure* f) { |
| // no-op if jvmti not enabled |
| if (!JvmtiEnv::environments_might_exist()) { |
| return; |
| } |
| |
| // Runs at safepoint. So no need to acquire Threads_lock. |
| for (JavaThread *jthr = Threads::first(); jthr != NULL; jthr = jthr->next()) { |
| JvmtiThreadState *state = jthr->jvmti_thread_state(); |
| if (state != NULL) { |
| JvmtiVMObjectAllocEventCollector *collector; |
| collector = state->get_vm_object_alloc_event_collector(); |
| while (collector != NULL) { |
| collector->oops_do(f); |
| collector = (JvmtiVMObjectAllocEventCollector *)collector->get_prev(); |
| } |
| } |
| } |
| } |
| |
| |
| // Disable collection of VMObjectAlloc events |
| NoJvmtiVMObjectAllocMark::NoJvmtiVMObjectAllocMark() : _collector(NULL) { |
| // a no-op if VMObjectAlloc event is not enabled |
| if (!JvmtiExport::should_post_vm_object_alloc()) { |
| return; |
| } |
| Thread* thread = ThreadLocalStorage::thread(); |
| if (thread != NULL && thread->is_Java_thread()) { |
| JavaThread* current_thread = (JavaThread*)thread; |
| JvmtiThreadState *state = current_thread->jvmti_thread_state(); |
| if (state != NULL) { |
| JvmtiVMObjectAllocEventCollector *collector; |
| collector = state->get_vm_object_alloc_event_collector(); |
| if (collector != NULL && collector->is_enabled()) { |
| _collector = collector; |
| _collector->set_enabled(false); |
| } |
| } |
| } |
| } |
| |
| // Re-Enable collection of VMObjectAlloc events (if previously enabled) |
| NoJvmtiVMObjectAllocMark::~NoJvmtiVMObjectAllocMark() { |
| if (was_enabled()) { |
| _collector->set_enabled(true); |
| } |
| }; |
| |
| JvmtiGCMarker::JvmtiGCMarker() { |
| // if there aren't any JVMTI environments then nothing to do |
| if (!JvmtiEnv::environments_might_exist()) { |
| return; |
| } |
| |
| if (JvmtiExport::should_post_garbage_collection_start()) { |
| JvmtiExport::post_garbage_collection_start(); |
| } |
| |
| if (SafepointSynchronize::is_at_safepoint()) { |
| // Do clean up tasks that need to be done at a safepoint |
| JvmtiEnvBase::check_for_periodic_clean_up(); |
| } |
| } |
| |
| JvmtiGCMarker::~JvmtiGCMarker() { |
| // if there aren't any JVMTI environments then nothing to do |
| if (!JvmtiEnv::environments_might_exist()) { |
| return; |
| } |
| |
| // JVMTI notify gc finish |
| if (JvmtiExport::should_post_garbage_collection_finish()) { |
| JvmtiExport::post_garbage_collection_finish(); |
| } |
| } |