duke@435: /*
zgu@4492:  * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
duke@435:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435:  *
duke@435:  * This code is free software; you can redistribute it and/or modify it
duke@435:  * under the terms of the GNU General Public License version 2 only, as
duke@435:  * published by the Free Software Foundation.
duke@435:  *
duke@435:  * This code is distributed in the hope that it will be useful, but WITHOUT
duke@435:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
duke@435:  * version 2 for more details (a copy is included in the LICENSE file that
duke@435:  * accompanied this code).
duke@435:  *
duke@435:  * You should have received a copy of the GNU General Public License version
duke@435:  * 2 along with this work; if not, write to the Free Software Foundation,
duke@435:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435:  *
trims@1907:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907:  * or visit www.oracle.com if you need additional information or have any
trims@1907:  * questions.
duke@435:  *
duke@435:  */
duke@435: 
stefank@2314: #include "precompiled.hpp"
stefank@2314: #include "classfile/systemDictionary.hpp"
stefank@2314: #include "classfile/vmSymbols.hpp"
stefank@2314: #include "interpreter/bytecodeStream.hpp"
stefank@2314: #include "interpreter/interpreter.hpp"
stefank@2314: #include "jvmtifiles/jvmtiEnv.hpp"
stefank@2314: #include "memory/resourceArea.hpp"
stefank@2314: #include "memory/universe.inline.hpp"
stefank@2314: #include "oops/instanceKlass.hpp"
stefank@2314: #include "prims/jniCheck.hpp"
stefank@2314: #include "prims/jvm_misc.hpp"
stefank@2314: #include "prims/jvmtiAgentThread.hpp"
stefank@2314: #include "prims/jvmtiClassFileReconstituter.hpp"
stefank@2314: #include "prims/jvmtiCodeBlobEvents.hpp"
stefank@2314: #include "prims/jvmtiExtensions.hpp"
stefank@2314: #include "prims/jvmtiGetLoadedClasses.hpp"
stefank@2314: #include "prims/jvmtiImpl.hpp"
stefank@2314: #include "prims/jvmtiManageCapabilities.hpp"
stefank@2314: #include "prims/jvmtiRawMonitor.hpp"
stefank@2314: #include "prims/jvmtiRedefineClasses.hpp"
stefank@2314: #include "prims/jvmtiTagMap.hpp"
stefank@2314: #include "prims/jvmtiThreadState.inline.hpp"
stefank@2314: #include "prims/jvmtiUtil.hpp"
stefank@2314: #include "runtime/arguments.hpp"
stefank@2314: #include "runtime/deoptimization.hpp"
stefank@2314: #include "runtime/interfaceSupport.hpp"
stefank@2314: #include "runtime/javaCalls.hpp"
stefank@2314: #include "runtime/jfieldIDWorkaround.hpp"
stefank@2314: #include "runtime/osThread.hpp"
stefank@2314: #include "runtime/reflectionUtils.hpp"
stefank@2314: #include "runtime/signature.hpp"
stefank@4299: #include "runtime/thread.inline.hpp"
stefank@2314: #include "runtime/vframe.hpp"
stefank@2314: #include "runtime/vmThread.hpp"
stefank@2314: #include "services/threadService.hpp"
stefank@2314: #include "utilities/exceptions.hpp"
stefank@2314: #include "utilities/preserveException.hpp"
duke@435: 
duke@435: 
duke@435: #define FIXLATER 0 // REMOVE this when completed.
duke@435: 
duke@435:  // FIXLATER: hook into JvmtiTrace
duke@435: #define TraceJVMTICalls false
duke@435: 
dcubed@1556: JvmtiEnv::JvmtiEnv(jint version) : JvmtiEnvBase(version) {
duke@435: }
duke@435: 
duke@435: JvmtiEnv::~JvmtiEnv() {
duke@435: }
duke@435: 
duke@435: JvmtiEnv*
dcubed@1556: JvmtiEnv::create_a_jvmti(jint version) {
dcubed@1556:   return new JvmtiEnv(version);
duke@435: }
duke@435: 
duke@435: // VM operation class to copy jni function table at safepoint.
duke@435: // More than one java threads or jvmti agents may be reading/
duke@435: // modifying jni function tables. To reduce the risk of bad
duke@435: // interaction b/w these threads it is copied at safepoint.
duke@435: class VM_JNIFunctionTableCopier : public VM_Operation {
duke@435:  private:
duke@435:   const struct JNINativeInterface_ *_function_table;
duke@435:  public:
duke@435:   VM_JNIFunctionTableCopier(const struct JNINativeInterface_ *func_tbl) {
duke@435:     _function_table = func_tbl;
duke@435:   };
duke@435: 
duke@435:   VMOp_Type type() const { return VMOp_JNIFunctionTableCopier; }
duke@435:   void doit() {
duke@435:     copy_jni_function_table(_function_table);
duke@435:   };
duke@435: };
duke@435: 
duke@435: //
duke@435: // Do not change the "prefix" marker below, everything above it is copied
duke@435: // unchanged into the filled stub, everything below is controlled by the
duke@435: // stub filler (only method bodies are carried forward, and then only for
duke@435: // functionality still in the spec).
duke@435: //
duke@435: // end file prefix
duke@435: 
duke@435:   //
duke@435:   // Memory Management functions
duke@435:   //
duke@435: 
duke@435: // mem_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::Allocate(jlong size, unsigned char** mem_ptr) {
duke@435:   return allocate(size, mem_ptr);
duke@435: } /* end Allocate */
duke@435: 
duke@435: 
duke@435: // mem - NULL is a valid value, must be checked
duke@435: jvmtiError
duke@435: JvmtiEnv::Deallocate(unsigned char* mem) {
duke@435:   return deallocate(mem);
duke@435: } /* end Deallocate */
duke@435: 
duke@435: // Threads_lock NOT held, java_thread not protected by lock
duke@435: // java_thread - pre-checked
duke@435: // data - NULL is a valid value, must be checked
duke@435: jvmtiError
duke@435: JvmtiEnv::SetThreadLocalStorage(JavaThread* java_thread, const void* data) {
duke@435:   JvmtiThreadState* state = java_thread->jvmti_thread_state();
duke@435:   if (state == NULL) {
duke@435:     if (data == NULL) {
duke@435:       // leaving state unset same as data set to NULL
duke@435:       return JVMTI_ERROR_NONE;
duke@435:     }
duke@435:     // otherwise, create the state
duke@435:     state = JvmtiThreadState::state_for(java_thread);
dcubed@1044:     if (state == NULL) {
dcubed@1044:       return JVMTI_ERROR_THREAD_NOT_ALIVE;
dcubed@1044:     }
duke@435:   }
duke@435:   state->env_thread_state(this)->set_agent_thread_local_storage_data((void*)data);
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end SetThreadLocalStorage */
duke@435: 
duke@435: 
duke@435: // Threads_lock NOT held
duke@435: // thread - NOT pre-checked
duke@435: // data_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetThreadLocalStorage(jthread thread, void** data_ptr) {
duke@435:   JavaThread* current_thread = JavaThread::current();
duke@435:   if (thread == NULL) {
duke@435:     JvmtiThreadState* state = current_thread->jvmti_thread_state();
duke@435:     *data_ptr = (state == NULL) ? NULL :
duke@435:       state->env_thread_state(this)->get_agent_thread_local_storage_data();
duke@435:   } else {
duke@435: 
duke@435:     // jvmti_GetThreadLocalStorage is "in native" and doesn't transition
duke@435:     // the thread to _thread_in_vm. However, when the TLS for a thread
duke@435:     // other than the current thread is required we need to transition
duke@435:     // from native so as to resolve the jthread.
duke@435: 
duke@435:     ThreadInVMfromNative __tiv(current_thread);
never@3241:     VM_ENTRY_BASE(jvmtiError, JvmtiEnv::GetThreadLocalStorage , current_thread)
duke@435:     debug_only(VMNativeEntryWrapper __vew;)
duke@435: 
duke@435:     oop thread_oop = JNIHandles::resolve_external_guard(thread);
duke@435:     if (thread_oop == NULL) {
duke@435:       return JVMTI_ERROR_INVALID_THREAD;
duke@435:     }
never@1577:     if (!thread_oop->is_a(SystemDictionary::Thread_klass())) {
duke@435:       return JVMTI_ERROR_INVALID_THREAD;
duke@435:     }
duke@435:     JavaThread* java_thread = java_lang_Thread::thread(thread_oop);
duke@435:     if (java_thread == NULL) {
duke@435:       return JVMTI_ERROR_THREAD_NOT_ALIVE;
duke@435:     }
duke@435:     JvmtiThreadState* state = java_thread->jvmti_thread_state();
duke@435:     *data_ptr = (state == NULL) ? NULL :
duke@435:       state->env_thread_state(this)->get_agent_thread_local_storage_data();
duke@435:   }
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetThreadLocalStorage */
duke@435: 
duke@435:   //
duke@435:   // Class functions
duke@435:   //
duke@435: 
duke@435: // class_count_ptr - pre-checked for NULL
duke@435: // classes_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetLoadedClasses(jint* class_count_ptr, jclass** classes_ptr) {
duke@435:   return JvmtiGetLoadedClasses::getLoadedClasses(this, class_count_ptr, classes_ptr);
duke@435: } /* end GetLoadedClasses */
duke@435: 
duke@435: 
duke@435: // initiating_loader - NULL is a valid value, must be checked
duke@435: // class_count_ptr - pre-checked for NULL
duke@435: // classes_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetClassLoaderClasses(jobject initiating_loader, jint* class_count_ptr, jclass** classes_ptr) {
duke@435:   return JvmtiGetLoadedClasses::getClassLoaderClasses(this, initiating_loader,
duke@435:                                                   class_count_ptr, classes_ptr);
duke@435: } /* end GetClassLoaderClasses */
duke@435: 
duke@435: // k_mirror - may be primitive, this must be checked
duke@435: // is_modifiable_class_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::IsModifiableClass(oop k_mirror, jboolean* is_modifiable_class_ptr) {
duke@435:   *is_modifiable_class_ptr = VM_RedefineClasses::is_modifiable_class(k_mirror)?
duke@435:                                                        JNI_TRUE : JNI_FALSE;
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end IsModifiableClass */
duke@435: 
duke@435: // class_count - pre-checked to be greater than or equal to 0
duke@435: // classes - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::RetransformClasses(jint class_count, const jclass* classes) {
duke@435: //TODO: add locking
duke@435: 
duke@435:   int index;
duke@435:   JavaThread* current_thread = JavaThread::current();
duke@435:   ResourceMark rm(current_thread);
duke@435: 
duke@435:   jvmtiClassDefinition* class_definitions =
duke@435:                             NEW_RESOURCE_ARRAY(jvmtiClassDefinition, class_count);
duke@435:   NULL_CHECK(class_definitions, JVMTI_ERROR_OUT_OF_MEMORY);
duke@435: 
duke@435:   for (index = 0; index < class_count; index++) {
duke@435:     HandleMark hm(current_thread);
duke@435: 
duke@435:     jclass jcls = classes[index];
duke@435:     oop k_mirror = JNIHandles::resolve_external_guard(jcls);
duke@435:     if (k_mirror == NULL) {
duke@435:       return JVMTI_ERROR_INVALID_CLASS;
duke@435:     }
never@1577:     if (!k_mirror->is_a(SystemDictionary::Class_klass())) {
duke@435:       return JVMTI_ERROR_INVALID_CLASS;
duke@435:     }
duke@435: 
duke@435:     if (java_lang_Class::is_primitive(k_mirror)) {
duke@435:       return JVMTI_ERROR_UNMODIFIABLE_CLASS;
duke@435:     }
duke@435: 
coleenp@4037:     Klass* k_oop = java_lang_Class::as_Klass(k_mirror);
duke@435:     KlassHandle klass(current_thread, k_oop);
duke@435: 
duke@435:     jint status = klass->jvmti_class_status();
duke@435:     if (status & (JVMTI_CLASS_STATUS_ERROR)) {
duke@435:       return JVMTI_ERROR_INVALID_CLASS;
duke@435:     }
duke@435:     if (status & (JVMTI_CLASS_STATUS_ARRAY)) {
duke@435:       return JVMTI_ERROR_UNMODIFIABLE_CLASS;
duke@435:     }
duke@435: 
duke@435:     instanceKlassHandle ikh(current_thread, k_oop);
duke@435:     if (ikh->get_cached_class_file_bytes() == NULL) {
dcubed@3360:       // Not cached, we need to reconstitute the class file from the
dcubed@3360:       // VM representation. We don't attach the reconstituted class
coleenp@4037:       // bytes to the InstanceKlass here because they have not been
dcubed@3360:       // validated and we're not at a safepoint.
duke@435:       constantPoolHandle  constants(current_thread, ikh->constants());
iklam@5971:       MonitorLockerEx ml(constants->lock());    // lock constant pool while we query it
duke@435: 
duke@435:       JvmtiClassFileReconstituter reconstituter(ikh);
duke@435:       if (reconstituter.get_error() != JVMTI_ERROR_NONE) {
duke@435:         return reconstituter.get_error();
duke@435:       }
duke@435: 
duke@435:       class_definitions[index].class_byte_count = (jint)reconstituter.class_file_size();
duke@435:       class_definitions[index].class_bytes      = (unsigned char*)
duke@435:                                                        reconstituter.class_file_bytes();
duke@435:     } else {
duke@435:       // it is cached, get it from the cache
duke@435:       class_definitions[index].class_byte_count = ikh->get_cached_class_file_len();
duke@435:       class_definitions[index].class_bytes      = ikh->get_cached_class_file_bytes();
duke@435:     }
duke@435:     class_definitions[index].klass              = jcls;
duke@435:   }
duke@435:   VM_RedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_retransform);
duke@435:   VMThread::execute(&op);
duke@435:   return (op.check_error());
duke@435: } /* end RetransformClasses */
duke@435: 
duke@435: 
duke@435: // class_count - pre-checked to be greater than or equal to 0
duke@435: // class_definitions - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::RedefineClasses(jint class_count, const jvmtiClassDefinition* class_definitions) {
duke@435: //TODO: add locking
duke@435:   VM_RedefineClasses op(class_count, class_definitions, jvmti_class_load_kind_redefine);
duke@435:   VMThread::execute(&op);
duke@435:   return (op.check_error());
duke@435: } /* end RedefineClasses */
duke@435: 
duke@435: 
duke@435:   //
duke@435:   // Object functions
duke@435:   //
duke@435: 
duke@435: // size_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetObjectSize(jobject object, jlong* size_ptr) {
duke@435:   oop mirror = JNIHandles::resolve_external_guard(object);
duke@435:   NULL_CHECK(mirror, JVMTI_ERROR_INVALID_OBJECT);
duke@435: 
coleenp@4037:   if (mirror->klass() == SystemDictionary::Class_klass() &&
coleenp@4037:       !java_lang_Class::is_primitive(mirror)) {
coleenp@4037:     Klass* k = java_lang_Class::as_Klass(mirror);
coleenp@4037:     assert(k != NULL, "class for non-primitive mirror must exist");
coleenp@4037:     *size_ptr = k->size() * wordSize;
coleenp@4037:   } else {
coleenp@4037:     *size_ptr = mirror->size() * wordSize;
duke@435:     }
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetObjectSize */
duke@435: 
duke@435:   //
duke@435:   // Method functions
duke@435:   //
duke@435: 
duke@435: // prefix - NULL is a valid value, must be checked
duke@435: jvmtiError
duke@435: JvmtiEnv::SetNativeMethodPrefix(const char* prefix) {
duke@435:   return prefix == NULL?
duke@435:               SetNativeMethodPrefixes(0, NULL) :
duke@435:               SetNativeMethodPrefixes(1, (char**)&prefix);
duke@435: } /* end SetNativeMethodPrefix */
duke@435: 
duke@435: 
duke@435: // prefix_count - pre-checked to be greater than or equal to 0
duke@435: // prefixes - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::SetNativeMethodPrefixes(jint prefix_count, char** prefixes) {
duke@435:   // Have to grab JVMTI thread state lock to be sure that some thread
duke@435:   // isn't accessing the prefixes at the same time we are setting them.
duke@435:   // No locks during VM bring-up.
duke@435:   if (Threads::number_of_threads() == 0) {
duke@435:     return set_native_method_prefixes(prefix_count, prefixes);
duke@435:   } else {
duke@435:     MutexLocker mu(JvmtiThreadState_lock);
duke@435:     return set_native_method_prefixes(prefix_count, prefixes);
duke@435:   }
duke@435: } /* end SetNativeMethodPrefixes */
duke@435: 
duke@435:   //
duke@435:   // Event Management functions
duke@435:   //
duke@435: 
duke@435: // callbacks - NULL is a valid value, must be checked
duke@435: // size_of_callbacks - pre-checked to be greater than or equal to 0
duke@435: jvmtiError
duke@435: JvmtiEnv::SetEventCallbacks(const jvmtiEventCallbacks* callbacks, jint size_of_callbacks) {
duke@435:   JvmtiEventController::set_event_callbacks(this, callbacks, size_of_callbacks);
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end SetEventCallbacks */
duke@435: 
duke@435: 
duke@435: // event_thread - NULL is a valid value, must be checked
duke@435: jvmtiError
duke@435: JvmtiEnv::SetEventNotificationMode(jvmtiEventMode mode, jvmtiEvent event_type, jthread event_thread,   ...) {
duke@435:   JavaThread* java_thread = NULL;
duke@435:   if (event_thread != NULL) {
duke@435:     oop thread_oop = JNIHandles::resolve_external_guard(event_thread);
duke@435:     if (thread_oop == NULL) {
duke@435:       return JVMTI_ERROR_INVALID_THREAD;
duke@435:     }
never@1577:     if (!thread_oop->is_a(SystemDictionary::Thread_klass())) {
duke@435:       return JVMTI_ERROR_INVALID_THREAD;
duke@435:     }
duke@435:     java_thread = java_lang_Thread::thread(thread_oop);
duke@435:     if (java_thread == NULL) {
duke@435:       return JVMTI_ERROR_THREAD_NOT_ALIVE;
duke@435:     }
duke@435:   }
duke@435: 
duke@435:   // event_type must be valid
duke@435:   if (!JvmtiEventController::is_valid_event_type(event_type)) {
duke@435:     return JVMTI_ERROR_INVALID_EVENT_TYPE;
duke@435:   }
duke@435: 
duke@435:   // global events cannot be controlled at thread level.
duke@435:   if (java_thread != NULL && JvmtiEventController::is_global_event(event_type)) {
duke@435:     return JVMTI_ERROR_ILLEGAL_ARGUMENT;
duke@435:   }
duke@435: 
duke@435:   bool enabled = (mode == JVMTI_ENABLE);
duke@435: 
duke@435:   // assure that needed capabilities are present
duke@435:   if (enabled && !JvmtiUtil::has_event_capability(event_type, get_capabilities())) {
duke@435:     return JVMTI_ERROR_MUST_POSSESS_CAPABILITY;
duke@435:   }
duke@435: 
duke@435:   if (event_type == JVMTI_EVENT_CLASS_FILE_LOAD_HOOK && enabled) {
duke@435:     record_class_file_load_hook_enabled();
duke@435:   }
duke@435:   JvmtiEventController::set_user_enabled(this, java_thread, event_type, enabled);
duke@435: 
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end SetEventNotificationMode */
duke@435: 
duke@435:   //
duke@435:   // Capability functions
duke@435:   //
duke@435: 
duke@435: // capabilities_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetPotentialCapabilities(jvmtiCapabilities* capabilities_ptr) {
duke@435:   JvmtiManageCapabilities::get_potential_capabilities(get_capabilities(),
duke@435:                                                       get_prohibited_capabilities(),
duke@435:                                                       capabilities_ptr);
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetPotentialCapabilities */
duke@435: 
duke@435: 
duke@435: // capabilities_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::AddCapabilities(const jvmtiCapabilities* capabilities_ptr) {
duke@435:   return JvmtiManageCapabilities::add_capabilities(get_capabilities(),
duke@435:                                                    get_prohibited_capabilities(),
duke@435:                                                    capabilities_ptr,
duke@435:                                                    get_capabilities());
duke@435: } /* end AddCapabilities */
duke@435: 
duke@435: 
duke@435: // capabilities_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::RelinquishCapabilities(const jvmtiCapabilities* capabilities_ptr) {
duke@435:   JvmtiManageCapabilities::relinquish_capabilities(get_capabilities(), capabilities_ptr, get_capabilities());
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end RelinquishCapabilities */
duke@435: 
duke@435: 
duke@435: // capabilities_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetCapabilities(jvmtiCapabilities* capabilities_ptr) {
duke@435:   JvmtiManageCapabilities::copy_capabilities(get_capabilities(), capabilities_ptr);
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetCapabilities */
duke@435: 
duke@435:   //
duke@435:   // Class Loader Search functions
duke@435:   //
duke@435: 
duke@435: // segment - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::AddToBootstrapClassLoaderSearch(const char* segment) {
duke@435:   jvmtiPhase phase = get_phase();
duke@435:   if (phase == JVMTI_PHASE_ONLOAD) {
duke@435:     Arguments::append_sysclasspath(segment);
duke@435:     return JVMTI_ERROR_NONE;
dcubed@1556:   } else if (use_version_1_0_semantics()) {
dcubed@1556:     // This JvmtiEnv requested version 1.0 semantics and this function
dcubed@1556:     // is only allowed in the ONLOAD phase in version 1.0 so we need to
dcubed@1556:     // return an error here.
dcubed@1556:     return JVMTI_ERROR_WRONG_PHASE;
dcubed@1555:   } else if (phase == JVMTI_PHASE_LIVE) {
dcubed@1555:     // The phase is checked by the wrapper that called this function,
dcubed@1555:     // but this thread could be racing with the thread that is
dcubed@1555:     // terminating the VM so we check one more time.
duke@435: 
duke@435:     // create the zip entry
duke@435:     ClassPathZipEntry* zip_entry = ClassLoader::create_class_path_zip_entry(segment);
duke@435:     if (zip_entry == NULL) {
duke@435:       return JVMTI_ERROR_ILLEGAL_ARGUMENT;
duke@435:     }
duke@435: 
duke@435:     // lock the loader
duke@435:     Thread* thread = Thread::current();
duke@435:     HandleMark hm;
duke@435:     Handle loader_lock = Handle(thread, SystemDictionary::system_loader_lock());
duke@435: 
duke@435:     ObjectLocker ol(loader_lock, thread);
duke@435: 
duke@435:     // add the jar file to the bootclasspath
duke@435:     if (TraceClassLoading) {
duke@435:       tty->print_cr("[Opened %s]", zip_entry->name());
duke@435:     }
duke@435:     ClassLoader::add_to_list(zip_entry);
duke@435:     return JVMTI_ERROR_NONE;
dcubed@1555:   } else {
dcubed@1555:     return JVMTI_ERROR_WRONG_PHASE;
duke@435:   }
duke@435: 
duke@435: } /* end AddToBootstrapClassLoaderSearch */
duke@435: 
duke@435: 
duke@435: // segment - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::AddToSystemClassLoaderSearch(const char* segment) {
duke@435:   jvmtiPhase phase = get_phase();
duke@435: 
duke@435:   if (phase == JVMTI_PHASE_ONLOAD) {
duke@435:     for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) {
duke@435:       if (strcmp("java.class.path", p->key()) == 0) {
duke@435:         p->append_value(segment);
duke@435:         break;
duke@435:       }
duke@435:     }
duke@435:     return JVMTI_ERROR_NONE;
dcubed@1555:   } else if (phase == JVMTI_PHASE_LIVE) {
dcubed@1555:     // The phase is checked by the wrapper that called this function,
dcubed@1555:     // but this thread could be racing with the thread that is
dcubed@1555:     // terminating the VM so we check one more time.
duke@435:     HandleMark hm;
duke@435: 
duke@435:     // create the zip entry (which will open the zip file and hence
duke@435:     // check that the segment is indeed a zip file).
duke@435:     ClassPathZipEntry* zip_entry = ClassLoader::create_class_path_zip_entry(segment);
duke@435:     if (zip_entry == NULL) {
duke@435:       return JVMTI_ERROR_ILLEGAL_ARGUMENT;
duke@435:     }
duke@435:     delete zip_entry;   // no longer needed
duke@435: 
duke@435:     // lock the loader
duke@435:     Thread* THREAD = Thread::current();
duke@435:     Handle loader = Handle(THREAD, SystemDictionary::java_system_loader());
duke@435: 
duke@435:     ObjectLocker ol(loader, THREAD);
duke@435: 
duke@435:     // need the path as java.lang.String
thurka@2778:     Handle path = java_lang_String::create_from_platform_dependent_str(segment, THREAD);
duke@435:     if (HAS_PENDING_EXCEPTION) {
duke@435:       CLEAR_PENDING_EXCEPTION;
duke@435:       return JVMTI_ERROR_INTERNAL;
duke@435:     }
duke@435: 
duke@435:     instanceKlassHandle loader_ik(THREAD, loader->klass());
duke@435: 
duke@435:     // Invoke the appendToClassPathForInstrumentation method - if the method
duke@435:     // is not found it means the loader doesn't support adding to the class path
duke@435:     // in the live phase.
duke@435:     {
duke@435:       JavaValue res(T_VOID);
duke@435:       JavaCalls::call_special(&res,
duke@435:                               loader,
duke@435:                               loader_ik,
coleenp@2497:                               vmSymbols::appendToClassPathForInstrumentation_name(),
coleenp@2497:                               vmSymbols::appendToClassPathForInstrumentation_signature(),
duke@435:                               path,
duke@435:                               THREAD);
duke@435:       if (HAS_PENDING_EXCEPTION) {
coleenp@4037:         Symbol* ex_name = PENDING_EXCEPTION->klass()->name();
duke@435:         CLEAR_PENDING_EXCEPTION;
duke@435: 
duke@435:         if (ex_name == vmSymbols::java_lang_NoSuchMethodError()) {
duke@435:           return JVMTI_ERROR_CLASS_LOADER_UNSUPPORTED;
duke@435:         } else {
duke@435:           return JVMTI_ERROR_INTERNAL;
duke@435:         }
duke@435:       }
duke@435:     }
duke@435: 
duke@435:     return JVMTI_ERROR_NONE;
dcubed@1555:   } else {
dcubed@1555:     return JVMTI_ERROR_WRONG_PHASE;
duke@435:   }
duke@435: } /* end AddToSystemClassLoaderSearch */
duke@435: 
duke@435:   //
duke@435:   // General functions
duke@435:   //
duke@435: 
duke@435: // phase_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetPhase(jvmtiPhase* phase_ptr) {
duke@435:   *phase_ptr = get_phase();
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetPhase */
duke@435: 
duke@435: 
duke@435: jvmtiError
duke@435: JvmtiEnv::DisposeEnvironment() {
duke@435:   dispose();
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end DisposeEnvironment */
duke@435: 
duke@435: 
duke@435: // data - NULL is a valid value, must be checked
duke@435: jvmtiError
duke@435: JvmtiEnv::SetEnvironmentLocalStorage(const void* data) {
duke@435:   set_env_local_storage(data);
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end SetEnvironmentLocalStorage */
duke@435: 
duke@435: 
duke@435: // data_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetEnvironmentLocalStorage(void** data_ptr) {
duke@435:   *data_ptr = (void*)get_env_local_storage();
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetEnvironmentLocalStorage */
duke@435: 
duke@435: // version_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetVersionNumber(jint* version_ptr) {
duke@435:   *version_ptr = JVMTI_VERSION;
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetVersionNumber */
duke@435: 
duke@435: 
duke@435: // name_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetErrorName(jvmtiError error, char** name_ptr) {
duke@435:   if (error < JVMTI_ERROR_NONE || error > JVMTI_ERROR_MAX) {
duke@435:     return JVMTI_ERROR_ILLEGAL_ARGUMENT;
duke@435:   }
duke@435:   const char *name = JvmtiUtil::error_name(error);
duke@435:   if (name == NULL) {
duke@435:     return JVMTI_ERROR_ILLEGAL_ARGUMENT;
duke@435:   }
duke@435:   size_t len = strlen(name) + 1;
duke@435:   jvmtiError err = allocate(len, (unsigned char**)name_ptr);
duke@435:   if (err == JVMTI_ERROR_NONE) {
duke@435:     memcpy(*name_ptr, name, len);
duke@435:   }
duke@435:   return err;
duke@435: } /* end GetErrorName */
duke@435: 
duke@435: 
duke@435: jvmtiError
duke@435: JvmtiEnv::SetVerboseFlag(jvmtiVerboseFlag flag, jboolean value) {
duke@435:   switch (flag) {
duke@435:   case JVMTI_VERBOSE_OTHER:
duke@435:     // ignore
duke@435:     break;
duke@435:   case JVMTI_VERBOSE_CLASS:
duke@435:     TraceClassLoading = value != 0;
duke@435:     TraceClassUnloading = value != 0;
duke@435:     break;
duke@435:   case JVMTI_VERBOSE_GC:
duke@435:     PrintGC = value != 0;
duke@435:     break;
duke@435:   case JVMTI_VERBOSE_JNI:
duke@435:     PrintJNIResolving = value != 0;
duke@435:     break;
duke@435:   default:
duke@435:     return JVMTI_ERROR_ILLEGAL_ARGUMENT;
duke@435:   };
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end SetVerboseFlag */
duke@435: 
duke@435: 
duke@435: // format_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetJLocationFormat(jvmtiJlocationFormat* format_ptr) {
duke@435:   *format_ptr = JVMTI_JLOCATION_JVMBCI;
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetJLocationFormat */
duke@435: 
duke@435:   //
duke@435:   // Thread functions
duke@435:   //
duke@435: 
duke@435: // Threads_lock NOT held
duke@435: // thread - NOT pre-checked
duke@435: // thread_state_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetThreadState(jthread thread, jint* thread_state_ptr) {
duke@435:   jint state;
duke@435:   oop thread_oop;
duke@435:   JavaThread* thr;
duke@435: 
duke@435:   if (thread == NULL) {
duke@435:     thread_oop = JavaThread::current()->threadObj();
duke@435:   } else {
duke@435:     thread_oop = JNIHandles::resolve_external_guard(thread);
duke@435:   }
duke@435: 
never@1577:   if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) {
duke@435:     return JVMTI_ERROR_INVALID_THREAD;
duke@435:   }
duke@435: 
duke@435:   // get most state bits
duke@435:   state = (jint)java_lang_Thread::get_thread_status(thread_oop);
duke@435: 
duke@435:   // add more state bits
duke@435:   thr = java_lang_Thread::thread(thread_oop);
duke@435:   if (thr != NULL) {
duke@435:     JavaThreadState jts = thr->thread_state();
duke@435: 
duke@435:     if (thr->is_being_ext_suspended()) {
duke@435:       state |= JVMTI_THREAD_STATE_SUSPENDED;
duke@435:     }
duke@435:     if (jts == _thread_in_native) {
duke@435:       state |= JVMTI_THREAD_STATE_IN_NATIVE;
duke@435:     }
duke@435:     OSThread* osThread = thr->osthread();
duke@435:     if (osThread != NULL && osThread->interrupted()) {
duke@435:       state |= JVMTI_THREAD_STATE_INTERRUPTED;
duke@435:     }
duke@435:   }
duke@435: 
duke@435:   *thread_state_ptr = state;
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetThreadState */
duke@435: 
duke@435: 
duke@435: // thread_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetCurrentThread(jthread* thread_ptr) {
duke@435:   JavaThread* current_thread  = JavaThread::current();
duke@435:   *thread_ptr = (jthread)JNIHandles::make_local(current_thread, current_thread->threadObj());
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetCurrentThread */
duke@435: 
duke@435: 
duke@435: // threads_count_ptr - pre-checked for NULL
duke@435: // threads_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetAllThreads(jint* threads_count_ptr, jthread** threads_ptr) {
duke@435:   int nthreads        = 0;
duke@435:   Handle *thread_objs = NULL;
duke@435:   ResourceMark rm;
duke@435:   HandleMark hm;
duke@435: 
duke@435:   // enumerate threads (including agent threads)
duke@435:   ThreadsListEnumerator tle(Thread::current(), true);
duke@435:   nthreads = tle.num_threads();
duke@435:   *threads_count_ptr = nthreads;
duke@435: 
duke@435:   if (nthreads == 0) {
duke@435:     *threads_ptr = NULL;
duke@435:     return JVMTI_ERROR_NONE;
duke@435:   }
duke@435: 
duke@435:   thread_objs = NEW_RESOURCE_ARRAY(Handle, nthreads);
duke@435:   NULL_CHECK(thread_objs, JVMTI_ERROR_OUT_OF_MEMORY);
duke@435: 
duke@435:   for (int i=0; i < nthreads; i++) {
duke@435:     thread_objs[i] = Handle(tle.get_threadObj(i));
duke@435:   }
duke@435: 
duke@435:   // have to make global handles outside of Threads_lock
duke@435:   jthread *jthreads  = new_jthreadArray(nthreads, thread_objs);
duke@435:   NULL_CHECK(jthreads, JVMTI_ERROR_OUT_OF_MEMORY);
duke@435: 
duke@435:   *threads_ptr = jthreads;
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetAllThreads */
duke@435: 
duke@435: 
duke@435: // Threads_lock NOT held, java_thread not protected by lock
duke@435: // java_thread - pre-checked
duke@435: jvmtiError
duke@435: JvmtiEnv::SuspendThread(JavaThread* java_thread) {
duke@435:   // don't allow hidden thread suspend request.
duke@435:   if (java_thread->is_hidden_from_external_view()) {
duke@435:     return (JVMTI_ERROR_NONE);
duke@435:   }
duke@435: 
duke@435:   {
duke@435:     MutexLockerEx ml(java_thread->SR_lock(), Mutex::_no_safepoint_check_flag);
duke@435:     if (java_thread->is_external_suspend()) {
duke@435:       // don't allow nested external suspend requests.
duke@435:       return (JVMTI_ERROR_THREAD_SUSPENDED);
duke@435:     }
duke@435:     if (java_thread->is_exiting()) { // thread is in the process of exiting
duke@435:       return (JVMTI_ERROR_THREAD_NOT_ALIVE);
duke@435:     }
duke@435:     java_thread->set_external_suspend();
duke@435:   }
duke@435: 
duke@435:   if (!JvmtiSuspendControl::suspend(java_thread)) {
duke@435:     // the thread was in the process of exiting
duke@435:     return (JVMTI_ERROR_THREAD_NOT_ALIVE);
duke@435:   }
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end SuspendThread */
duke@435: 
duke@435: 
duke@435: // request_count - pre-checked to be greater than or equal to 0
duke@435: // request_list - pre-checked for NULL
duke@435: // results - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::SuspendThreadList(jint request_count, const jthread* request_list, jvmtiError* results) {
duke@435:   int needSafepoint = 0;  // > 0 if we need a safepoint
duke@435:   for (int i = 0; i < request_count; i++) {
duke@435:     JavaThread *java_thread = get_JavaThread(request_list[i]);
duke@435:     if (java_thread == NULL) {
duke@435:       results[i] = JVMTI_ERROR_INVALID_THREAD;
duke@435:       continue;
duke@435:     }
duke@435:     // the thread has not yet run or has exited (not on threads list)
duke@435:     if (java_thread->threadObj() == NULL) {
duke@435:       results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE;
duke@435:       continue;
duke@435:     }
duke@435:     if (java_lang_Thread::thread(java_thread->threadObj()) == NULL) {
duke@435:       results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE;
duke@435:       continue;
duke@435:     }
duke@435:     // don't allow hidden thread suspend request.
duke@435:     if (java_thread->is_hidden_from_external_view()) {
duke@435:       results[i] = JVMTI_ERROR_NONE;  // indicate successful suspend
duke@435:       continue;
duke@435:     }
duke@435: 
duke@435:     {
duke@435:       MutexLockerEx ml(java_thread->SR_lock(), Mutex::_no_safepoint_check_flag);
duke@435:       if (java_thread->is_external_suspend()) {
duke@435:         // don't allow nested external suspend requests.
duke@435:         results[i] = JVMTI_ERROR_THREAD_SUSPENDED;
duke@435:         continue;
duke@435:       }
duke@435:       if (java_thread->is_exiting()) { // thread is in the process of exiting
duke@435:         results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE;
duke@435:         continue;
duke@435:       }
duke@435:       java_thread->set_external_suspend();
duke@435:     }
duke@435:     if (java_thread->thread_state() == _thread_in_native) {
duke@435:       // We need to try and suspend native threads here. Threads in
duke@435:       // other states will self-suspend on their next transition.
duke@435:       if (!JvmtiSuspendControl::suspend(java_thread)) {
duke@435:         // The thread was in the process of exiting. Force another
duke@435:         // safepoint to make sure that this thread transitions.
duke@435:         needSafepoint++;
duke@435:         results[i] = JVMTI_ERROR_THREAD_NOT_ALIVE;
duke@435:         continue;
duke@435:       }
duke@435:     } else {
duke@435:       needSafepoint++;
duke@435:     }
duke@435:     results[i] = JVMTI_ERROR_NONE;  // indicate successful suspend
duke@435:   }
duke@435:   if (needSafepoint > 0) {
duke@435:     VM_ForceSafepoint vfs;
duke@435:     VMThread::execute(&vfs);
duke@435:   }
duke@435:   // per-thread suspend results returned via results parameter
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end SuspendThreadList */
duke@435: 
duke@435: 
duke@435: // Threads_lock NOT held, java_thread not protected by lock
duke@435: // java_thread - pre-checked
duke@435: jvmtiError
duke@435: JvmtiEnv::ResumeThread(JavaThread* java_thread) {
duke@435:   // don't allow hidden thread resume request.
duke@435:   if (java_thread->is_hidden_from_external_view()) {
duke@435:     return JVMTI_ERROR_NONE;
duke@435:   }
duke@435: 
duke@435:   if (!java_thread->is_being_ext_suspended()) {
duke@435:     return JVMTI_ERROR_THREAD_NOT_SUSPENDED;
duke@435:   }
duke@435: 
duke@435:   if (!JvmtiSuspendControl::resume(java_thread)) {
duke@435:     return JVMTI_ERROR_INTERNAL;
duke@435:   }
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end ResumeThread */
duke@435: 
duke@435: 
duke@435: // request_count - pre-checked to be greater than or equal to 0
duke@435: // request_list - pre-checked for NULL
duke@435: // results - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::ResumeThreadList(jint request_count, const jthread* request_list, jvmtiError* results) {
duke@435:   for (int i = 0; i < request_count; i++) {
duke@435:     JavaThread *java_thread = get_JavaThread(request_list[i]);
duke@435:     if (java_thread == NULL) {
duke@435:       results[i] = JVMTI_ERROR_INVALID_THREAD;
duke@435:       continue;
duke@435:     }
duke@435:     // don't allow hidden thread resume request.
duke@435:     if (java_thread->is_hidden_from_external_view()) {
duke@435:       results[i] = JVMTI_ERROR_NONE;  // indicate successful resume
duke@435:       continue;
duke@435:     }
duke@435:     if (!java_thread->is_being_ext_suspended()) {
duke@435:       results[i] = JVMTI_ERROR_THREAD_NOT_SUSPENDED;
duke@435:       continue;
duke@435:     }
duke@435: 
duke@435:     if (!JvmtiSuspendControl::resume(java_thread)) {
duke@435:       results[i] = JVMTI_ERROR_INTERNAL;
duke@435:       continue;
duke@435:     }
duke@435: 
duke@435:     results[i] = JVMTI_ERROR_NONE;  // indicate successful suspend
duke@435:   }
duke@435:   // per-thread resume results returned via results parameter
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end ResumeThreadList */
duke@435: 
duke@435: 
duke@435: // Threads_lock NOT held, java_thread not protected by lock
duke@435: // java_thread - pre-checked
duke@435: jvmtiError
duke@435: JvmtiEnv::StopThread(JavaThread* java_thread, jobject exception) {
duke@435:   oop e = JNIHandles::resolve_external_guard(exception);
duke@435:   NULL_CHECK(e, JVMTI_ERROR_NULL_POINTER);
duke@435: 
duke@435:   JavaThread::send_async_exception(java_thread->threadObj(), e);
duke@435: 
duke@435:   return JVMTI_ERROR_NONE;
duke@435: 
duke@435: } /* end StopThread */
duke@435: 
duke@435: 
duke@435: // Threads_lock NOT held
duke@435: // thread - NOT pre-checked
duke@435: jvmtiError
duke@435: JvmtiEnv::InterruptThread(jthread thread) {
duke@435:   oop thread_oop = JNIHandles::resolve_external_guard(thread);
never@1577:   if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass()))
duke@435:     return JVMTI_ERROR_INVALID_THREAD;
duke@435: 
duke@435:   JavaThread* current_thread  = JavaThread::current();
duke@435: 
duke@435:   // Todo: this is a duplicate of JVM_Interrupt; share code in future
duke@435:   // Ensure that the C++ Thread and OSThread structures aren't freed before we operate
duke@435:   MutexLockerEx ml(current_thread->threadObj() == thread_oop ? NULL : Threads_lock);
duke@435:   // We need to re-resolve the java_thread, since a GC might have happened during the
duke@435:   // acquire of the lock
duke@435: 
duke@435:   JavaThread* java_thread = java_lang_Thread::thread(JNIHandles::resolve_external_guard(thread));
duke@435:   NULL_CHECK(java_thread, JVMTI_ERROR_THREAD_NOT_ALIVE);
duke@435: 
duke@435:   Thread::interrupt(java_thread);
duke@435: 
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end InterruptThread */
duke@435: 
duke@435: 
duke@435: // Threads_lock NOT held
duke@435: // thread - NOT pre-checked
duke@435: // info_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetThreadInfo(jthread thread, jvmtiThreadInfo* info_ptr) {
duke@435:   ResourceMark rm;
duke@435:   HandleMark hm;
duke@435: 
duke@435:   JavaThread* current_thread = JavaThread::current();
duke@435: 
duke@435:   // if thread is NULL the current thread is used
duke@435:   oop thread_oop;
duke@435:   if (thread == NULL) {
duke@435:     thread_oop = current_thread->threadObj();
duke@435:   } else {
duke@435:     thread_oop = JNIHandles::resolve_external_guard(thread);
duke@435:   }
never@1577:   if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass()))
duke@435:     return JVMTI_ERROR_INVALID_THREAD;
duke@435: 
duke@435:   Handle thread_obj(current_thread, thread_oop);
duke@435:   typeArrayHandle    name;
duke@435:   ThreadPriority priority;
duke@435:   Handle     thread_group;
duke@435:   Handle context_class_loader;
duke@435:   bool          is_daemon;
duke@435: 
duke@435:   { MutexLocker mu(Threads_lock);
duke@435: 
duke@435:     name = typeArrayHandle(current_thread, java_lang_Thread::name(thread_obj()));
duke@435:     priority = java_lang_Thread::priority(thread_obj());
duke@435:     thread_group = Handle(current_thread, java_lang_Thread::threadGroup(thread_obj()));
duke@435:     is_daemon = java_lang_Thread::is_daemon(thread_obj());
duke@435: 
duke@435:     oop loader = java_lang_Thread::context_class_loader(thread_obj());
duke@435:     context_class_loader = Handle(current_thread, loader);
duke@435:   }
duke@435:   { const char *n;
duke@435: 
duke@435:     if (name() != NULL) {
duke@435:       n = UNICODE::as_utf8((jchar*) name->base(T_CHAR), name->length());
duke@435:     } else {
duke@435:       n = UNICODE::as_utf8(NULL, 0);
duke@435:     }
duke@435: 
duke@435:     info_ptr->name = (char *) jvmtiMalloc(strlen(n)+1);
duke@435:     if (info_ptr->name == NULL)
duke@435:       return JVMTI_ERROR_OUT_OF_MEMORY;
duke@435: 
duke@435:     strcpy(info_ptr->name, n);
duke@435:   }
duke@435:   info_ptr->is_daemon = is_daemon;
duke@435:   info_ptr->priority  = priority;
duke@435: 
duke@435:   info_ptr->context_class_loader = (context_class_loader.is_null()) ? NULL :
duke@435:                                      jni_reference(context_class_loader);
duke@435:   info_ptr->thread_group = jni_reference(thread_group);
duke@435: 
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetThreadInfo */
duke@435: 
duke@435: 
duke@435: // Threads_lock NOT held, java_thread not protected by lock
duke@435: // java_thread - pre-checked
duke@435: // owned_monitor_count_ptr - pre-checked for NULL
duke@435: // owned_monitors_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetOwnedMonitorInfo(JavaThread* java_thread, jint* owned_monitor_count_ptr, jobject** owned_monitors_ptr) {
duke@435:   jvmtiError err = JVMTI_ERROR_NONE;
duke@435:   JavaThread* calling_thread = JavaThread::current();
duke@435: 
duke@435:   // growable array of jvmti monitors info on the C-heap
duke@435:   GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list =
zgu@3900:       new (ResourceObj::C_HEAP, mtInternal) GrowableArray<jvmtiMonitorStackDepthInfo*>(1, true);
duke@435: 
duke@435:   uint32_t debug_bits = 0;
duke@435:   if (is_thread_fully_suspended(java_thread, true, &debug_bits)) {
duke@435:     err = get_owned_monitors(calling_thread, java_thread, owned_monitors_list);
duke@435:   } else {
duke@435:     // JVMTI get monitors info at safepoint. Do not require target thread to
duke@435:     // be suspended.
duke@435:     VM_GetOwnedMonitorInfo op(this, calling_thread, java_thread, owned_monitors_list);
duke@435:     VMThread::execute(&op);
duke@435:     err = op.result();
duke@435:   }
duke@435:   jint owned_monitor_count = owned_monitors_list->length();
duke@435:   if (err == JVMTI_ERROR_NONE) {
duke@435:     if ((err = allocate(owned_monitor_count * sizeof(jobject *),
duke@435:                       (unsigned char**)owned_monitors_ptr)) == JVMTI_ERROR_NONE) {
duke@435:       // copy into the returned array
duke@435:       for (int i = 0; i < owned_monitor_count; i++) {
duke@435:         (*owned_monitors_ptr)[i] =
duke@435:           ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->monitor;
duke@435:       }
duke@435:       *owned_monitor_count_ptr = owned_monitor_count;
duke@435:     }
duke@435:   }
duke@435:   // clean up.
duke@435:   for (int i = 0; i < owned_monitor_count; i++) {
duke@435:     deallocate((unsigned char*)owned_monitors_list->at(i));
duke@435:   }
duke@435:   delete owned_monitors_list;
duke@435: 
duke@435:   return err;
duke@435: } /* end GetOwnedMonitorInfo */
duke@435: 
duke@435: 
duke@435: // Threads_lock NOT held, java_thread not protected by lock
duke@435: // java_thread - pre-checked
duke@435: // monitor_info_count_ptr - pre-checked for NULL
duke@435: // monitor_info_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetOwnedMonitorStackDepthInfo(JavaThread* java_thread, jint* monitor_info_count_ptr, jvmtiMonitorStackDepthInfo** monitor_info_ptr) {
duke@435:   jvmtiError err = JVMTI_ERROR_NONE;
duke@435:   JavaThread* calling_thread  = JavaThread::current();
duke@435: 
duke@435:   // growable array of jvmti monitors info on the C-heap
duke@435:   GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list =
zgu@3900:          new (ResourceObj::C_HEAP, mtInternal) GrowableArray<jvmtiMonitorStackDepthInfo*>(1, true);
duke@435: 
duke@435:   uint32_t debug_bits = 0;
duke@435:   if (is_thread_fully_suspended(java_thread, true, &debug_bits)) {
duke@435:     err = get_owned_monitors(calling_thread, java_thread, owned_monitors_list);
duke@435:   } else {
duke@435:     // JVMTI get owned monitors info at safepoint. Do not require target thread to
duke@435:     // be suspended.
duke@435:     VM_GetOwnedMonitorInfo op(this, calling_thread, java_thread, owned_monitors_list);
duke@435:     VMThread::execute(&op);
duke@435:     err = op.result();
duke@435:   }
duke@435: 
duke@435:   jint owned_monitor_count = owned_monitors_list->length();
duke@435:   if (err == JVMTI_ERROR_NONE) {
duke@435:     if ((err = allocate(owned_monitor_count * sizeof(jvmtiMonitorStackDepthInfo),
duke@435:                       (unsigned char**)monitor_info_ptr)) == JVMTI_ERROR_NONE) {
duke@435:       // copy to output array.
duke@435:       for (int i = 0; i < owned_monitor_count; i++) {
duke@435:         (*monitor_info_ptr)[i].monitor =
duke@435:           ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->monitor;
duke@435:         (*monitor_info_ptr)[i].stack_depth =
duke@435:           ((jvmtiMonitorStackDepthInfo*)owned_monitors_list->at(i))->stack_depth;
duke@435:       }
duke@435:     }
duke@435:     *monitor_info_count_ptr = owned_monitor_count;
duke@435:   }
duke@435: 
duke@435:   // clean up.
duke@435:   for (int i = 0; i < owned_monitor_count; i++) {
duke@435:     deallocate((unsigned char*)owned_monitors_list->at(i));
duke@435:   }
duke@435:   delete owned_monitors_list;
duke@435: 
duke@435:   return err;
duke@435: } /* end GetOwnedMonitorStackDepthInfo */
duke@435: 
duke@435: 
duke@435: // Threads_lock NOT held, java_thread not protected by lock
duke@435: // java_thread - pre-checked
duke@435: // monitor_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetCurrentContendedMonitor(JavaThread* java_thread, jobject* monitor_ptr) {
duke@435:   jvmtiError err = JVMTI_ERROR_NONE;
duke@435:   uint32_t debug_bits = 0;
duke@435:   JavaThread* calling_thread  = JavaThread::current();
duke@435:   if (is_thread_fully_suspended(java_thread, true, &debug_bits)) {
duke@435:     err = get_current_contended_monitor(calling_thread, java_thread, monitor_ptr);
duke@435:   } else {
duke@435:     // get contended monitor information at safepoint.
duke@435:     VM_GetCurrentContendedMonitor op(this, calling_thread, java_thread, monitor_ptr);
duke@435:     VMThread::execute(&op);
duke@435:     err = op.result();
duke@435:   }
duke@435:   return err;
duke@435: } /* end GetCurrentContendedMonitor */
duke@435: 
duke@435: 
duke@435: // Threads_lock NOT held
duke@435: // thread - NOT pre-checked
duke@435: // proc - pre-checked for NULL
duke@435: // arg - NULL is a valid value, must be checked
duke@435: jvmtiError
duke@435: JvmtiEnv::RunAgentThread(jthread thread, jvmtiStartFunction proc, const void* arg, jint priority) {
duke@435:   oop thread_oop = JNIHandles::resolve_external_guard(thread);
never@1577:   if (thread_oop == NULL || !thread_oop->is_a(SystemDictionary::Thread_klass())) {
duke@435:     return JVMTI_ERROR_INVALID_THREAD;
duke@435:   }
duke@435:   if (priority < JVMTI_THREAD_MIN_PRIORITY || priority > JVMTI_THREAD_MAX_PRIORITY) {
duke@435:     return JVMTI_ERROR_INVALID_PRIORITY;
duke@435:   }
duke@435: 
duke@435:   //Thread-self
duke@435:   JavaThread* current_thread = JavaThread::current();
duke@435: 
duke@435:   Handle thread_hndl(current_thread, thread_oop);
duke@435:   {
duke@435:     MutexLocker mu(Threads_lock); // grab Threads_lock
duke@435: 
duke@435:     JvmtiAgentThread *new_thread = new JvmtiAgentThread(this, proc, arg);
duke@435: 
duke@435:     // At this point it may be possible that no osthread was created for the
duke@435:     // JavaThread due to lack of memory.
duke@435:     if (new_thread == NULL || new_thread->osthread() == NULL) {
duke@435:       if (new_thread) delete new_thread;
duke@435:       return JVMTI_ERROR_OUT_OF_MEMORY;
duke@435:     }
duke@435: 
duke@435:     java_lang_Thread::set_thread(thread_hndl(), new_thread);
duke@435:     java_lang_Thread::set_priority(thread_hndl(), (ThreadPriority)priority);
duke@435:     java_lang_Thread::set_daemon(thread_hndl());
duke@435: 
duke@435:     new_thread->set_threadObj(thread_hndl());
duke@435:     Threads::add(new_thread);
duke@435:     Thread::start(new_thread);
duke@435:   } // unlock Threads_lock
duke@435: 
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end RunAgentThread */
duke@435: 
duke@435:   //
duke@435:   // Thread Group functions
duke@435:   //
duke@435: 
duke@435: // group_count_ptr - pre-checked for NULL
duke@435: // groups_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetTopThreadGroups(jint* group_count_ptr, jthreadGroup** groups_ptr) {
duke@435:   JavaThread* current_thread = JavaThread::current();
duke@435: 
duke@435:   // Only one top level thread group now.
duke@435:   *group_count_ptr = 1;
duke@435: 
duke@435:   // Allocate memory to store global-refs to the thread groups.
duke@435:   // Assume this area is freed by caller.
duke@435:   *groups_ptr = (jthreadGroup *) jvmtiMalloc((sizeof(jthreadGroup)) * (*group_count_ptr));
duke@435: 
duke@435:   NULL_CHECK(*groups_ptr, JVMTI_ERROR_OUT_OF_MEMORY);
duke@435: 
duke@435:   // Convert oop to Handle, then convert Handle to global-ref.
duke@435:   {
duke@435:     HandleMark hm(current_thread);
duke@435:     Handle system_thread_group(current_thread, Universe::system_thread_group());
duke@435:     *groups_ptr[0] = jni_reference(system_thread_group);
duke@435:   }
duke@435: 
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetTopThreadGroups */
duke@435: 
duke@435: 
duke@435: // info_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetThreadGroupInfo(jthreadGroup group, jvmtiThreadGroupInfo* info_ptr) {
duke@435:   ResourceMark rm;
duke@435:   HandleMark hm;
duke@435: 
duke@435:   JavaThread* current_thread = JavaThread::current();
duke@435: 
duke@435:   Handle group_obj (current_thread, JNIHandles::resolve_external_guard(group));
duke@435:   NULL_CHECK(group_obj(), JVMTI_ERROR_INVALID_THREAD_GROUP);
duke@435: 
duke@435:   typeArrayHandle name;
duke@435:   Handle parent_group;
duke@435:   bool is_daemon;
duke@435:   ThreadPriority max_priority;
duke@435: 
duke@435:   { MutexLocker mu(Threads_lock);
duke@435: 
duke@435:     name         = typeArrayHandle(current_thread,
duke@435:                                    java_lang_ThreadGroup::name(group_obj()));
duke@435:     parent_group = Handle(current_thread, java_lang_ThreadGroup::parent(group_obj()));
duke@435:     is_daemon    = java_lang_ThreadGroup::is_daemon(group_obj());
duke@435:     max_priority = java_lang_ThreadGroup::maxPriority(group_obj());
duke@435:   }
duke@435: 
duke@435:   info_ptr->is_daemon    = is_daemon;
duke@435:   info_ptr->max_priority = max_priority;
duke@435:   info_ptr->parent       = jni_reference(parent_group);
duke@435: 
duke@435:   if (name() != NULL) {
duke@435:     const char* n = UNICODE::as_utf8((jchar*) name->base(T_CHAR), name->length());
duke@435:     info_ptr->name = (char *)jvmtiMalloc(strlen(n)+1);
duke@435:     NULL_CHECK(info_ptr->name, JVMTI_ERROR_OUT_OF_MEMORY);
duke@435:     strcpy(info_ptr->name, n);
duke@435:   } else {
duke@435:     info_ptr->name = NULL;
duke@435:   }
duke@435: 
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetThreadGroupInfo */
duke@435: 
duke@435: 
duke@435: // thread_count_ptr - pre-checked for NULL
duke@435: // threads_ptr - pre-checked for NULL
duke@435: // group_count_ptr - pre-checked for NULL
duke@435: // groups_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetThreadGroupChildren(jthreadGroup group, jint* thread_count_ptr, jthread** threads_ptr, jint* group_count_ptr, jthreadGroup** groups_ptr) {
duke@435:   JavaThread* current_thread = JavaThread::current();
duke@435:   oop group_obj = (oop) JNIHandles::resolve_external_guard(group);
duke@435:   NULL_CHECK(group_obj, JVMTI_ERROR_INVALID_THREAD_GROUP);
duke@435: 
duke@435:   Handle *thread_objs = NULL;
duke@435:   Handle *group_objs  = NULL;
duke@435:   int nthreads = 0;
duke@435:   int ngroups = 0;
duke@435:   int hidden_threads = 0;
duke@435: 
duke@435:   ResourceMark rm;
duke@435:   HandleMark hm;
duke@435: 
duke@435:   Handle group_hdl(current_thread, group_obj);
duke@435: 
duke@435:   { MutexLocker mu(Threads_lock);
duke@435: 
duke@435:     nthreads = java_lang_ThreadGroup::nthreads(group_hdl());
duke@435:     ngroups  = java_lang_ThreadGroup::ngroups(group_hdl());
duke@435: 
duke@435:     if (nthreads > 0) {
duke@435:       objArrayOop threads = java_lang_ThreadGroup::threads(group_hdl());
duke@435:       assert(nthreads <= threads->length(), "too many threads");
duke@435:       thread_objs = NEW_RESOURCE_ARRAY(Handle,nthreads);
duke@435:       for (int i=0, j=0; i<nthreads; i++) {
duke@435:         oop thread_obj = threads->obj_at(i);
duke@435:         assert(thread_obj != NULL, "thread_obj is NULL");
duke@435:         JavaThread *javathread = java_lang_Thread::thread(thread_obj);
duke@435:         // Filter out hidden java threads.
duke@435:         if (javathread != NULL && javathread->is_hidden_from_external_view()) {
duke@435:           hidden_threads++;
duke@435:           continue;
duke@435:         }
duke@435:         thread_objs[j++] = Handle(current_thread, thread_obj);
duke@435:       }
duke@435:       nthreads -= hidden_threads;
duke@435:     }
duke@435:     if (ngroups > 0) {
duke@435:       objArrayOop groups = java_lang_ThreadGroup::groups(group_hdl());
duke@435:       assert(ngroups <= groups->length(), "too many threads");
duke@435:       group_objs = NEW_RESOURCE_ARRAY(Handle,ngroups);
duke@435:       for (int i=0; i<ngroups; i++) {
duke@435:         oop group_obj = groups->obj_at(i);
duke@435:         assert(group_obj != NULL, "group_obj != NULL");
duke@435:         group_objs[i] = Handle(current_thread, group_obj);
duke@435:       }
duke@435:     }
duke@435:   }
duke@435: 
duke@435:   // have to make global handles outside of Threads_lock
duke@435:   *group_count_ptr  = ngroups;
duke@435:   *thread_count_ptr = nthreads;
duke@435:   *threads_ptr     = new_jthreadArray(nthreads, thread_objs);
duke@435:   *groups_ptr      = new_jthreadGroupArray(ngroups, group_objs);
duke@435:   if ((nthreads > 0) && (*threads_ptr == NULL)) {
duke@435:     return JVMTI_ERROR_OUT_OF_MEMORY;
duke@435:   }
duke@435:   if ((ngroups > 0) && (*groups_ptr == NULL)) {
duke@435:     return JVMTI_ERROR_OUT_OF_MEMORY;
duke@435:   }
duke@435: 
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetThreadGroupChildren */
duke@435: 
duke@435: 
duke@435:   //
duke@435:   // Stack Frame functions
duke@435:   //
duke@435: 
duke@435: // Threads_lock NOT held, java_thread not protected by lock
duke@435: // java_thread - pre-checked
duke@435: // max_frame_count - pre-checked to be greater than or equal to 0
duke@435: // frame_buffer - pre-checked for NULL
duke@435: // count_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetStackTrace(JavaThread* java_thread, jint start_depth, jint max_frame_count, jvmtiFrameInfo* frame_buffer, jint* count_ptr) {
duke@435:   jvmtiError err = JVMTI_ERROR_NONE;
duke@435:   uint32_t debug_bits = 0;
duke@435:   if (is_thread_fully_suspended(java_thread, true, &debug_bits)) {
duke@435:     err = get_stack_trace(java_thread, start_depth, max_frame_count, frame_buffer, count_ptr);
duke@435:   } else {
duke@435:     // JVMTI get stack trace at safepoint. Do not require target thread to
duke@435:     // be suspended.
duke@435:     VM_GetStackTrace op(this, java_thread, start_depth, max_frame_count, frame_buffer, count_ptr);
duke@435:     VMThread::execute(&op);
duke@435:     err = op.result();
duke@435:   }
duke@435: 
duke@435:   return err;
duke@435: } /* end GetStackTrace */
duke@435: 
duke@435: 
duke@435: // max_frame_count - pre-checked to be greater than or equal to 0
duke@435: // stack_info_ptr - pre-checked for NULL
duke@435: // thread_count_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetAllStackTraces(jint max_frame_count, jvmtiStackInfo** stack_info_ptr, jint* thread_count_ptr) {
duke@435:   jvmtiError err = JVMTI_ERROR_NONE;
duke@435:   JavaThread* calling_thread = JavaThread::current();
duke@435: 
duke@435:   // JVMTI get stack traces at safepoint.
duke@435:   VM_GetAllStackTraces op(this, calling_thread, max_frame_count);
duke@435:   VMThread::execute(&op);
duke@435:   *thread_count_ptr = op.final_thread_count();
duke@435:   *stack_info_ptr = op.stack_info();
duke@435:   err = op.result();
duke@435:   return err;
duke@435: } /* end GetAllStackTraces */
duke@435: 
duke@435: 
duke@435: // thread_count - pre-checked to be greater than or equal to 0
duke@435: // thread_list - pre-checked for NULL
duke@435: // max_frame_count - pre-checked to be greater than or equal to 0
duke@435: // stack_info_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetThreadListStackTraces(jint thread_count, const jthread* thread_list, jint max_frame_count, jvmtiStackInfo** stack_info_ptr) {
duke@435:   jvmtiError err = JVMTI_ERROR_NONE;
duke@435:   // JVMTI get stack traces at safepoint.
duke@435:   VM_GetThreadListStackTraces op(this, thread_count, thread_list, max_frame_count);
duke@435:   VMThread::execute(&op);
duke@435:   err = op.result();
duke@435:   if (err == JVMTI_ERROR_NONE) {
duke@435:     *stack_info_ptr = op.stack_info();
duke@435:   }
duke@435:   return err;
duke@435: } /* end GetThreadListStackTraces */
duke@435: 
duke@435: 
duke@435: // Threads_lock NOT held, java_thread not protected by lock
duke@435: // java_thread - pre-checked
duke@435: // count_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetFrameCount(JavaThread* java_thread, jint* count_ptr) {
duke@435:   jvmtiError err = JVMTI_ERROR_NONE;
duke@435: 
duke@435:   // retrieve or create JvmtiThreadState.
duke@435:   JvmtiThreadState* state = JvmtiThreadState::state_for(java_thread);
dcubed@1044:   if (state == NULL) {
dcubed@1044:     return JVMTI_ERROR_THREAD_NOT_ALIVE;
dcubed@1044:   }
duke@435:   uint32_t debug_bits = 0;
duke@435:   if (is_thread_fully_suspended(java_thread, true, &debug_bits)) {
duke@435:     err = get_frame_count(state, count_ptr);
duke@435:   } else {
duke@435:     // get java stack frame count at safepoint.
duke@435:     VM_GetFrameCount op(this, state, count_ptr);
duke@435:     VMThread::execute(&op);
duke@435:     err = op.result();
duke@435:   }
duke@435:   return err;
duke@435: } /* end GetFrameCount */
duke@435: 
duke@435: 
duke@435: // Threads_lock NOT held, java_thread not protected by lock
duke@435: // java_thread - pre-checked
duke@435: jvmtiError
duke@435: JvmtiEnv::PopFrame(JavaThread* java_thread) {
duke@435:   JavaThread* current_thread  = JavaThread::current();
duke@435:   HandleMark hm(current_thread);
duke@435:   uint32_t debug_bits = 0;
duke@435: 
dcubed@1044:   // retrieve or create the state
dcubed@1044:   JvmtiThreadState* state = JvmtiThreadState::state_for(java_thread);
dcubed@1044:   if (state == NULL) {
dcubed@1044:     return JVMTI_ERROR_THREAD_NOT_ALIVE;
dcubed@1044:   }
dcubed@1044: 
duke@435:   // Check if java_thread is fully suspended
duke@435:   if (!is_thread_fully_suspended(java_thread, true /* wait for suspend completion */, &debug_bits)) {
duke@435:     return JVMTI_ERROR_THREAD_NOT_SUSPENDED;
duke@435:   }
duke@435:   // Check to see if a PopFrame was already in progress
duke@435:   if (java_thread->popframe_condition() != JavaThread::popframe_inactive) {
duke@435:     // Probably possible for JVMTI clients to trigger this, but the
duke@435:     // JPDA backend shouldn't allow this to happen
duke@435:     return JVMTI_ERROR_INTERNAL;
duke@435:   }
duke@435: 
duke@435:   {
duke@435:     // Was workaround bug
duke@435:     //    4812902: popFrame hangs if the method is waiting at a synchronize
duke@435:     // Catch this condition and return an error to avoid hanging.
duke@435:     // Now JVMTI spec allows an implementation to bail out with an opaque frame error.
duke@435:     OSThread* osThread = java_thread->osthread();
duke@435:     if (osThread->get_state() == MONITOR_WAIT) {
duke@435:       return JVMTI_ERROR_OPAQUE_FRAME;
duke@435:     }
duke@435:   }
duke@435: 
duke@435:   {
duke@435:     ResourceMark rm(current_thread);
duke@435:     // Check if there are more than one Java frame in this thread, that the top two frames
duke@435:     // are Java (not native) frames, and that there is no intervening VM frame
duke@435:     int frame_count = 0;
duke@435:     bool is_interpreted[2];
duke@435:     intptr_t *frame_sp[2];
duke@435:     // The 2-nd arg of constructor is needed to stop iterating at java entry frame.
duke@435:     for (vframeStream vfs(java_thread, true); !vfs.at_end(); vfs.next()) {
duke@435:       methodHandle mh(current_thread, vfs.method());
duke@435:       if (mh->is_native()) return(JVMTI_ERROR_OPAQUE_FRAME);
duke@435:       is_interpreted[frame_count] = vfs.is_interpreted_frame();
duke@435:       frame_sp[frame_count] = vfs.frame_id();
duke@435:       if (++frame_count > 1) break;
duke@435:     }
duke@435:     if (frame_count < 2)  {
duke@435:       // We haven't found two adjacent non-native Java frames on the top.
duke@435:       // There can be two situations here:
duke@435:       //  1. There are no more java frames
duke@435:       //  2. Two top java frames are separated by non-java native frames
duke@435:       if(vframeFor(java_thread, 1) == NULL) {
duke@435:         return JVMTI_ERROR_NO_MORE_FRAMES;
duke@435:       } else {
duke@435:         // Intervening non-java native or VM frames separate java frames.
duke@435:         // Current implementation does not support this. See bug #5031735.
duke@435:         // In theory it is possible to pop frames in such cases.
duke@435:         return JVMTI_ERROR_OPAQUE_FRAME;
duke@435:       }
duke@435:     }
duke@435: 
duke@435:     // If any of the top 2 frames is a compiled one, need to deoptimize it
duke@435:     for (int i = 0; i < 2; i++) {
duke@435:       if (!is_interpreted[i]) {
never@2260:         Deoptimization::deoptimize_frame(java_thread, frame_sp[i]);
duke@435:       }
duke@435:     }
duke@435: 
duke@435:     // Update the thread state to reflect that the top frame is popped
duke@435:     // so that cur_stack_depth is maintained properly and all frameIDs
duke@435:     // are invalidated.
duke@435:     // The current frame will be popped later when the suspended thread
duke@435:     // is resumed and right before returning from VM to Java.
duke@435:     // (see call_VM_base() in assembler_<cpu>.cpp).
duke@435: 
duke@435:     // It's fine to update the thread state here because no JVMTI events
duke@435:     // shall be posted for this PopFrame.
duke@435: 
duke@435:     state->update_for_pop_top_frame();
duke@435:     java_thread->set_popframe_condition(JavaThread::popframe_pending_bit);
duke@435:     // Set pending step flag for this popframe and it is cleared when next
duke@435:     // step event is posted.
duke@435:     state->set_pending_step_for_popframe();
duke@435:   }
duke@435: 
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end PopFrame */
duke@435: 
duke@435: 
duke@435: // Threads_lock NOT held, java_thread not protected by lock
duke@435: // java_thread - pre-checked
duke@435: // java_thread - unchecked
duke@435: // depth - pre-checked as non-negative
duke@435: // method_ptr - pre-checked for NULL
duke@435: // location_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetFrameLocation(JavaThread* java_thread, jint depth, jmethodID* method_ptr, jlocation* location_ptr) {
duke@435:   jvmtiError err = JVMTI_ERROR_NONE;
duke@435:   uint32_t debug_bits = 0;
duke@435: 
duke@435:   if (is_thread_fully_suspended(java_thread, true, &debug_bits)) {
duke@435:     err = get_frame_location(java_thread, depth, method_ptr, location_ptr);
duke@435:   } else {
duke@435:     // JVMTI get java stack frame location at safepoint.
duke@435:     VM_GetFrameLocation op(this, java_thread, depth, method_ptr, location_ptr);
duke@435:     VMThread::execute(&op);
duke@435:     err = op.result();
duke@435:   }
duke@435:   return err;
duke@435: } /* end GetFrameLocation */
duke@435: 
duke@435: 
duke@435: // Threads_lock NOT held, java_thread not protected by lock
duke@435: // java_thread - pre-checked
duke@435: // java_thread - unchecked
duke@435: // depth - pre-checked as non-negative
duke@435: jvmtiError
duke@435: JvmtiEnv::NotifyFramePop(JavaThread* java_thread, jint depth) {
duke@435:   ResourceMark rm;
duke@435:   uint32_t debug_bits = 0;
duke@435: 
dcubed@1044:   JvmtiThreadState *state = JvmtiThreadState::state_for(java_thread);
dcubed@1044:   if (state == NULL) {
dcubed@1044:     return JVMTI_ERROR_THREAD_NOT_ALIVE;
dcubed@1044:   }
dcubed@1044: 
duke@435:   if (!JvmtiEnv::is_thread_fully_suspended(java_thread, true, &debug_bits)) {
duke@435:       return JVMTI_ERROR_THREAD_NOT_SUSPENDED;
duke@435:   }
duke@435: 
duke@435:   if (TraceJVMTICalls) {
duke@435:     JvmtiSuspendControl::print();
duke@435:   }
duke@435: 
duke@435:   vframe *vf = vframeFor(java_thread, depth);
duke@435:   if (vf == NULL) {
duke@435:     return JVMTI_ERROR_NO_MORE_FRAMES;
duke@435:   }
duke@435: 
duke@435:   if (!vf->is_java_frame() || ((javaVFrame*) vf)->method()->is_native()) {
duke@435:     return JVMTI_ERROR_OPAQUE_FRAME;
duke@435:   }
duke@435: 
duke@435:   assert(vf->frame_pointer() != NULL, "frame pointer mustn't be NULL");
duke@435: 
duke@435:   int frame_number = state->count_frames() - depth;
duke@435:   state->env_thread_state(this)->set_frame_pop(frame_number);
duke@435: 
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end NotifyFramePop */
duke@435: 
duke@435: 
duke@435:   //
duke@435:   // Force Early Return functions
duke@435:   //
duke@435: 
duke@435: // Threads_lock NOT held, java_thread not protected by lock
duke@435: // java_thread - pre-checked
duke@435: jvmtiError
duke@435: JvmtiEnv::ForceEarlyReturnObject(JavaThread* java_thread, jobject value) {
duke@435:   jvalue val;
duke@435:   val.l = value;
duke@435:   return force_early_return(java_thread, val, atos);
duke@435: } /* end ForceEarlyReturnObject */
duke@435: 
duke@435: 
duke@435: // Threads_lock NOT held, java_thread not protected by lock
duke@435: // java_thread - pre-checked
duke@435: jvmtiError
duke@435: JvmtiEnv::ForceEarlyReturnInt(JavaThread* java_thread, jint value) {
duke@435:   jvalue val;
duke@435:   val.i = value;
duke@435:   return force_early_return(java_thread, val, itos);
duke@435: } /* end ForceEarlyReturnInt */
duke@435: 
duke@435: 
duke@435: // Threads_lock NOT held, java_thread not protected by lock
duke@435: // java_thread - pre-checked
duke@435: jvmtiError
duke@435: JvmtiEnv::ForceEarlyReturnLong(JavaThread* java_thread, jlong value) {
duke@435:   jvalue val;
duke@435:   val.j = value;
duke@435:   return force_early_return(java_thread, val, ltos);
duke@435: } /* end ForceEarlyReturnLong */
duke@435: 
duke@435: 
duke@435: // Threads_lock NOT held, java_thread not protected by lock
duke@435: // java_thread - pre-checked
duke@435: jvmtiError
duke@435: JvmtiEnv::ForceEarlyReturnFloat(JavaThread* java_thread, jfloat value) {
duke@435:   jvalue val;
duke@435:   val.f = value;
duke@435:   return force_early_return(java_thread, val, ftos);
duke@435: } /* end ForceEarlyReturnFloat */
duke@435: 
duke@435: 
duke@435: // Threads_lock NOT held, java_thread not protected by lock
duke@435: // java_thread - pre-checked
duke@435: jvmtiError
duke@435: JvmtiEnv::ForceEarlyReturnDouble(JavaThread* java_thread, jdouble value) {
duke@435:   jvalue val;
duke@435:   val.d = value;
duke@435:   return force_early_return(java_thread, val, dtos);
duke@435: } /* end ForceEarlyReturnDouble */
duke@435: 
duke@435: 
duke@435: // Threads_lock NOT held, java_thread not protected by lock
duke@435: // java_thread - pre-checked
duke@435: jvmtiError
duke@435: JvmtiEnv::ForceEarlyReturnVoid(JavaThread* java_thread) {
duke@435:   jvalue val;
duke@435:   val.j = 0L;
duke@435:   return force_early_return(java_thread, val, vtos);
duke@435: } /* end ForceEarlyReturnVoid */
duke@435: 
duke@435: 
duke@435:   //
duke@435:   // Heap functions
duke@435:   //
duke@435: 
duke@435: // klass - NULL is a valid value, must be checked
duke@435: // initial_object - NULL is a valid value, must be checked
duke@435: // callbacks - pre-checked for NULL
duke@435: // user_data - NULL is a valid value, must be checked
duke@435: jvmtiError
duke@435: JvmtiEnv::FollowReferences(jint heap_filter, jclass klass, jobject initial_object, const jvmtiHeapCallbacks* callbacks, const void* user_data) {
duke@435:   // check klass if provided
coleenp@4037:   Klass* k_oop = NULL;
duke@435:   if (klass != NULL) {
duke@435:     oop k_mirror = JNIHandles::resolve_external_guard(klass);
duke@435:     if (k_mirror == NULL) {
duke@435:       return JVMTI_ERROR_INVALID_CLASS;
duke@435:     }
duke@435:     if (java_lang_Class::is_primitive(k_mirror)) {
duke@435:       return JVMTI_ERROR_NONE;
duke@435:     }
coleenp@4037:     k_oop = java_lang_Class::as_Klass(k_mirror);
duke@435:     if (k_oop == NULL) {
duke@435:       return JVMTI_ERROR_INVALID_CLASS;
duke@435:     }
duke@435:   }
duke@435: 
duke@435:   Thread *thread = Thread::current();
duke@435:   HandleMark hm(thread);
duke@435:   KlassHandle kh (thread, k_oop);
duke@435: 
duke@435:   TraceTime t("FollowReferences", TraceJVMTIObjectTagging);
duke@435:   JvmtiTagMap::tag_map_for(this)->follow_references(heap_filter, kh, initial_object, callbacks, user_data);
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end FollowReferences */
duke@435: 
duke@435: 
duke@435: // klass - NULL is a valid value, must be checked
duke@435: // callbacks - pre-checked for NULL
duke@435: // user_data - NULL is a valid value, must be checked
duke@435: jvmtiError
duke@435: JvmtiEnv::IterateThroughHeap(jint heap_filter, jclass klass, const jvmtiHeapCallbacks* callbacks, const void* user_data) {
duke@435:   // check klass if provided
coleenp@4037:   Klass* k_oop = NULL;
duke@435:   if (klass != NULL) {
duke@435:     oop k_mirror = JNIHandles::resolve_external_guard(klass);
duke@435:     if (k_mirror == NULL) {
duke@435:       return JVMTI_ERROR_INVALID_CLASS;
duke@435:     }
duke@435:     if (java_lang_Class::is_primitive(k_mirror)) {
duke@435:       return JVMTI_ERROR_NONE;
duke@435:     }
coleenp@4037:     k_oop = java_lang_Class::as_Klass(k_mirror);
duke@435:     if (k_oop == NULL) {
duke@435:       return JVMTI_ERROR_INVALID_CLASS;
duke@435:     }
duke@435:   }
duke@435: 
duke@435:   Thread *thread = Thread::current();
duke@435:   HandleMark hm(thread);
duke@435:   KlassHandle kh (thread, k_oop);
duke@435: 
duke@435:   TraceTime t("IterateThroughHeap", TraceJVMTIObjectTagging);
duke@435:   JvmtiTagMap::tag_map_for(this)->iterate_through_heap(heap_filter, kh, callbacks, user_data);
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end IterateThroughHeap */
duke@435: 
duke@435: 
duke@435: // tag_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetTag(jobject object, jlong* tag_ptr) {
duke@435:   oop o = JNIHandles::resolve_external_guard(object);
duke@435:   NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT);
duke@435:   *tag_ptr = JvmtiTagMap::tag_map_for(this)->get_tag(object);
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetTag */
duke@435: 
duke@435: 
duke@435: jvmtiError
duke@435: JvmtiEnv::SetTag(jobject object, jlong tag) {
duke@435:   oop o = JNIHandles::resolve_external_guard(object);
duke@435:   NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT);
duke@435:   JvmtiTagMap::tag_map_for(this)->set_tag(object, tag);
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end SetTag */
duke@435: 
duke@435: 
duke@435: // tag_count - pre-checked to be greater than or equal to 0
duke@435: // tags - pre-checked for NULL
duke@435: // count_ptr - pre-checked for NULL
duke@435: // object_result_ptr - NULL is a valid value, must be checked
duke@435: // tag_result_ptr - NULL is a valid value, must be checked
duke@435: jvmtiError
duke@435: JvmtiEnv::GetObjectsWithTags(jint tag_count, const jlong* tags, jint* count_ptr, jobject** object_result_ptr, jlong** tag_result_ptr) {
duke@435:   TraceTime t("GetObjectsWithTags", TraceJVMTIObjectTagging);
duke@435:   return JvmtiTagMap::tag_map_for(this)->get_objects_with_tags((jlong*)tags, tag_count, count_ptr, object_result_ptr, tag_result_ptr);
duke@435: } /* end GetObjectsWithTags */
duke@435: 
duke@435: 
duke@435: jvmtiError
duke@435: JvmtiEnv::ForceGarbageCollection() {
duke@435:   Universe::heap()->collect(GCCause::_jvmti_force_gc);
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end ForceGarbageCollection */
duke@435: 
duke@435: 
duke@435:   //
duke@435:   // Heap (1.0) functions
duke@435:   //
duke@435: 
duke@435: // object_reference_callback - pre-checked for NULL
duke@435: // user_data - NULL is a valid value, must be checked
duke@435: jvmtiError
duke@435: JvmtiEnv::IterateOverObjectsReachableFromObject(jobject object, jvmtiObjectReferenceCallback object_reference_callback, const void* user_data) {
duke@435:   oop o = JNIHandles::resolve_external_guard(object);
duke@435:   NULL_CHECK(o, JVMTI_ERROR_INVALID_OBJECT);
duke@435:   JvmtiTagMap::tag_map_for(this)->iterate_over_objects_reachable_from_object(object, object_reference_callback, user_data);
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end IterateOverObjectsReachableFromObject */
duke@435: 
duke@435: 
duke@435: // heap_root_callback - NULL is a valid value, must be checked
duke@435: // stack_ref_callback - NULL is a valid value, must be checked
duke@435: // object_ref_callback - NULL is a valid value, must be checked
duke@435: // user_data - NULL is a valid value, must be checked
duke@435: jvmtiError
duke@435: JvmtiEnv::IterateOverReachableObjects(jvmtiHeapRootCallback heap_root_callback, jvmtiStackReferenceCallback stack_ref_callback, jvmtiObjectReferenceCallback object_ref_callback, const void* user_data) {
duke@435:   TraceTime t("IterateOverReachableObjects", TraceJVMTIObjectTagging);
duke@435:   JvmtiTagMap::tag_map_for(this)->iterate_over_reachable_objects(heap_root_callback, stack_ref_callback, object_ref_callback, user_data);
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end IterateOverReachableObjects */
duke@435: 
duke@435: 
duke@435: // heap_object_callback - pre-checked for NULL
duke@435: // user_data - NULL is a valid value, must be checked
duke@435: jvmtiError
duke@435: JvmtiEnv::IterateOverHeap(jvmtiHeapObjectFilter object_filter, jvmtiHeapObjectCallback heap_object_callback, const void* user_data) {
duke@435:   TraceTime t("IterateOverHeap", TraceJVMTIObjectTagging);
duke@435:   Thread *thread = Thread::current();
duke@435:   HandleMark hm(thread);
duke@435:   JvmtiTagMap::tag_map_for(this)->iterate_over_heap(object_filter, KlassHandle(), heap_object_callback, user_data);
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end IterateOverHeap */
duke@435: 
duke@435: 
duke@435: // k_mirror - may be primitive, this must be checked
duke@435: // heap_object_callback - pre-checked for NULL
duke@435: // user_data - NULL is a valid value, must be checked
duke@435: jvmtiError
duke@435: JvmtiEnv::IterateOverInstancesOfClass(oop k_mirror, jvmtiHeapObjectFilter object_filter, jvmtiHeapObjectCallback heap_object_callback, const void* user_data) {
duke@435:   if (java_lang_Class::is_primitive(k_mirror)) {
duke@435:     // DO PRIMITIVE CLASS PROCESSING
duke@435:     return JVMTI_ERROR_NONE;
duke@435:   }
coleenp@4037:   Klass* k_oop = java_lang_Class::as_Klass(k_mirror);
duke@435:   if (k_oop == NULL) {
duke@435:     return JVMTI_ERROR_INVALID_CLASS;
duke@435:   }
duke@435:   Thread *thread = Thread::current();
duke@435:   HandleMark hm(thread);
duke@435:   KlassHandle klass (thread, k_oop);
duke@435:   TraceTime t("IterateOverInstancesOfClass", TraceJVMTIObjectTagging);
duke@435:   JvmtiTagMap::tag_map_for(this)->iterate_over_heap(object_filter, klass, heap_object_callback, user_data);
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end IterateOverInstancesOfClass */
duke@435: 
duke@435: 
duke@435:   //
duke@435:   // Local Variable functions
duke@435:   //
duke@435: 
duke@435: // Threads_lock NOT held, java_thread not protected by lock
duke@435: // java_thread - pre-checked
duke@435: // java_thread - unchecked
duke@435: // depth - pre-checked as non-negative
duke@435: // value_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetLocalObject(JavaThread* java_thread, jint depth, jint slot, jobject* value_ptr) {
duke@435:   JavaThread* current_thread = JavaThread::current();
duke@435:   // rm object is created to clean up the javaVFrame created in
duke@435:   // doit_prologue(), but after doit() is finished with it.
duke@435:   ResourceMark rm(current_thread);
duke@435: 
duke@435:   VM_GetOrSetLocal op(java_thread, current_thread, depth, slot);
duke@435:   VMThread::execute(&op);
duke@435:   jvmtiError err = op.result();
duke@435:   if (err != JVMTI_ERROR_NONE) {
duke@435:     return err;
duke@435:   } else {
duke@435:     *value_ptr = op.value().l;
duke@435:     return JVMTI_ERROR_NONE;
duke@435:   }
duke@435: } /* end GetLocalObject */
duke@435: 
kamg@2361: // Threads_lock NOT held, java_thread not protected by lock
kamg@2361: // java_thread - pre-checked
kamg@2361: // java_thread - unchecked
kamg@2361: // depth - pre-checked as non-negative
kamg@2361: // value - pre-checked for NULL
kamg@2361: jvmtiError
phh@2423: JvmtiEnv::GetLocalInstance(JavaThread* java_thread, jint depth, jobject* value_ptr){
kamg@2361:   JavaThread* current_thread = JavaThread::current();
kamg@2361:   // rm object is created to clean up the javaVFrame created in
kamg@2361:   // doit_prologue(), but after doit() is finished with it.
kamg@2361:   ResourceMark rm(current_thread);
kamg@2361: 
kamg@2361:   VM_GetReceiver op(java_thread, current_thread, depth);
kamg@2361:   VMThread::execute(&op);
kamg@2361:   jvmtiError err = op.result();
kamg@2361:   if (err != JVMTI_ERROR_NONE) {
kamg@2361:     return err;
kamg@2361:   } else {
phh@2423:     *value_ptr = op.value().l;
kamg@2361:     return JVMTI_ERROR_NONE;
kamg@2361:   }
kamg@2361: } /* end GetLocalInstance */
kamg@2361: 
duke@435: 
duke@435: // Threads_lock NOT held, java_thread not protected by lock
duke@435: // java_thread - pre-checked
duke@435: // java_thread - unchecked
duke@435: // depth - pre-checked as non-negative
duke@435: // value_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetLocalInt(JavaThread* java_thread, jint depth, jint slot, jint* value_ptr) {
duke@435:   // rm object is created to clean up the javaVFrame created in
duke@435:   // doit_prologue(), but after doit() is finished with it.
duke@435:   ResourceMark rm;
duke@435: 
duke@435:   VM_GetOrSetLocal op(java_thread, depth, slot, T_INT);
duke@435:   VMThread::execute(&op);
duke@435:   *value_ptr = op.value().i;
duke@435:   return op.result();
duke@435: } /* end GetLocalInt */
duke@435: 
duke@435: 
duke@435: // Threads_lock NOT held, java_thread not protected by lock
duke@435: // java_thread - pre-checked
duke@435: // java_thread - unchecked
duke@435: // depth - pre-checked as non-negative
duke@435: // value_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetLocalLong(JavaThread* java_thread, jint depth, jint slot, jlong* value_ptr) {
duke@435:   // rm object is created to clean up the javaVFrame created in
duke@435:   // doit_prologue(), but after doit() is finished with it.
duke@435:   ResourceMark rm;
duke@435: 
duke@435:   VM_GetOrSetLocal op(java_thread, depth, slot, T_LONG);
duke@435:   VMThread::execute(&op);
duke@435:   *value_ptr = op.value().j;
duke@435:   return op.result();
duke@435: } /* end GetLocalLong */
duke@435: 
duke@435: 
duke@435: // Threads_lock NOT held, java_thread not protected by lock
duke@435: // java_thread - pre-checked
duke@435: // java_thread - unchecked
duke@435: // depth - pre-checked as non-negative
duke@435: // value_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetLocalFloat(JavaThread* java_thread, jint depth, jint slot, jfloat* value_ptr) {
duke@435:   // rm object is created to clean up the javaVFrame created in
duke@435:   // doit_prologue(), but after doit() is finished with it.
duke@435:   ResourceMark rm;
duke@435: 
duke@435:   VM_GetOrSetLocal op(java_thread, depth, slot, T_FLOAT);
duke@435:   VMThread::execute(&op);
duke@435:   *value_ptr = op.value().f;
duke@435:   return op.result();
duke@435: } /* end GetLocalFloat */
duke@435: 
duke@435: 
duke@435: // Threads_lock NOT held, java_thread not protected by lock
duke@435: // java_thread - pre-checked
duke@435: // java_thread - unchecked
duke@435: // depth - pre-checked as non-negative
duke@435: // value_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetLocalDouble(JavaThread* java_thread, jint depth, jint slot, jdouble* value_ptr) {
duke@435:   // rm object is created to clean up the javaVFrame created in
duke@435:   // doit_prologue(), but after doit() is finished with it.
duke@435:   ResourceMark rm;
duke@435: 
duke@435:   VM_GetOrSetLocal op(java_thread, depth, slot, T_DOUBLE);
duke@435:   VMThread::execute(&op);
duke@435:   *value_ptr = op.value().d;
duke@435:   return op.result();
duke@435: } /* end GetLocalDouble */
duke@435: 
duke@435: 
duke@435: // Threads_lock NOT held, java_thread not protected by lock
duke@435: // java_thread - pre-checked
duke@435: // java_thread - unchecked
duke@435: // depth - pre-checked as non-negative
duke@435: jvmtiError
duke@435: JvmtiEnv::SetLocalObject(JavaThread* java_thread, jint depth, jint slot, jobject value) {
duke@435:   // rm object is created to clean up the javaVFrame created in
duke@435:   // doit_prologue(), but after doit() is finished with it.
duke@435:   ResourceMark rm;
duke@435:   jvalue val;
duke@435:   val.l = value;
duke@435:   VM_GetOrSetLocal op(java_thread, depth, slot, T_OBJECT, val);
duke@435:   VMThread::execute(&op);
duke@435:   return op.result();
duke@435: } /* end SetLocalObject */
duke@435: 
duke@435: 
duke@435: // Threads_lock NOT held, java_thread not protected by lock
duke@435: // java_thread - pre-checked
duke@435: // java_thread - unchecked
duke@435: // depth - pre-checked as non-negative
duke@435: jvmtiError
duke@435: JvmtiEnv::SetLocalInt(JavaThread* java_thread, jint depth, jint slot, jint value) {
duke@435:   // rm object is created to clean up the javaVFrame created in
duke@435:   // doit_prologue(), but after doit() is finished with it.
duke@435:   ResourceMark rm;
duke@435:   jvalue val;
duke@435:   val.i = value;
duke@435:   VM_GetOrSetLocal op(java_thread, depth, slot, T_INT, val);
duke@435:   VMThread::execute(&op);
duke@435:   return op.result();
duke@435: } /* end SetLocalInt */
duke@435: 
duke@435: 
duke@435: // Threads_lock NOT held, java_thread not protected by lock
duke@435: // java_thread - pre-checked
duke@435: // java_thread - unchecked
duke@435: // depth - pre-checked as non-negative
duke@435: jvmtiError
duke@435: JvmtiEnv::SetLocalLong(JavaThread* java_thread, jint depth, jint slot, jlong value) {
duke@435:   // rm object is created to clean up the javaVFrame created in
duke@435:   // doit_prologue(), but after doit() is finished with it.
duke@435:   ResourceMark rm;
duke@435:   jvalue val;
duke@435:   val.j = value;
duke@435:   VM_GetOrSetLocal op(java_thread, depth, slot, T_LONG, val);
duke@435:   VMThread::execute(&op);
duke@435:   return op.result();
duke@435: } /* end SetLocalLong */
duke@435: 
duke@435: 
duke@435: // Threads_lock NOT held, java_thread not protected by lock
duke@435: // java_thread - pre-checked
duke@435: // java_thread - unchecked
duke@435: // depth - pre-checked as non-negative
duke@435: jvmtiError
duke@435: JvmtiEnv::SetLocalFloat(JavaThread* java_thread, jint depth, jint slot, jfloat value) {
duke@435:   // rm object is created to clean up the javaVFrame created in
duke@435:   // doit_prologue(), but after doit() is finished with it.
duke@435:   ResourceMark rm;
duke@435:   jvalue val;
duke@435:   val.f = value;
duke@435:   VM_GetOrSetLocal op(java_thread, depth, slot, T_FLOAT, val);
duke@435:   VMThread::execute(&op);
duke@435:   return op.result();
duke@435: } /* end SetLocalFloat */
duke@435: 
duke@435: 
duke@435: // Threads_lock NOT held, java_thread not protected by lock
duke@435: // java_thread - pre-checked
duke@435: // java_thread - unchecked
duke@435: // depth - pre-checked as non-negative
duke@435: jvmtiError
duke@435: JvmtiEnv::SetLocalDouble(JavaThread* java_thread, jint depth, jint slot, jdouble value) {
duke@435:   // rm object is created to clean up the javaVFrame created in
duke@435:   // doit_prologue(), but after doit() is finished with it.
duke@435:   ResourceMark rm;
duke@435:   jvalue val;
duke@435:   val.d = value;
duke@435:   VM_GetOrSetLocal op(java_thread, depth, slot, T_DOUBLE, val);
duke@435:   VMThread::execute(&op);
duke@435:   return op.result();
duke@435: } /* end SetLocalDouble */
duke@435: 
duke@435: 
duke@435:   //
duke@435:   // Breakpoint functions
duke@435:   //
duke@435: 
duke@435: // method_oop - pre-checked for validity, but may be NULL meaning obsolete method
duke@435: jvmtiError
coleenp@4037: JvmtiEnv::SetBreakpoint(Method* method_oop, jlocation location) {
duke@435:   NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
duke@435:   if (location < 0) {   // simple invalid location check first
duke@435:     return JVMTI_ERROR_INVALID_LOCATION;
duke@435:   }
duke@435:   // verify that the breakpoint is not past the end of the method
duke@435:   if (location >= (jlocation) method_oop->code_size()) {
duke@435:     return JVMTI_ERROR_INVALID_LOCATION;
duke@435:   }
duke@435: 
duke@435:   ResourceMark rm;
duke@435:   JvmtiBreakpoint bp(method_oop, location);
duke@435:   JvmtiBreakpoints& jvmti_breakpoints = JvmtiCurrentBreakpoints::get_jvmti_breakpoints();
duke@435:   if (jvmti_breakpoints.set(bp) == JVMTI_ERROR_DUPLICATE)
duke@435:     return JVMTI_ERROR_DUPLICATE;
duke@435: 
duke@435:   if (TraceJVMTICalls) {
duke@435:     jvmti_breakpoints.print();
duke@435:   }
duke@435: 
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end SetBreakpoint */
duke@435: 
duke@435: 
duke@435: // method_oop - pre-checked for validity, but may be NULL meaning obsolete method
duke@435: jvmtiError
coleenp@4037: JvmtiEnv::ClearBreakpoint(Method* method_oop, jlocation location) {
duke@435:   NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
duke@435: 
duke@435:   if (location < 0) {   // simple invalid location check first
duke@435:     return JVMTI_ERROR_INVALID_LOCATION;
duke@435:   }
duke@435: 
duke@435:   // verify that the breakpoint is not past the end of the method
duke@435:   if (location >= (jlocation) method_oop->code_size()) {
duke@435:     return JVMTI_ERROR_INVALID_LOCATION;
duke@435:   }
duke@435: 
duke@435:   JvmtiBreakpoint bp(method_oop, location);
duke@435: 
duke@435:   JvmtiBreakpoints& jvmti_breakpoints = JvmtiCurrentBreakpoints::get_jvmti_breakpoints();
duke@435:   if (jvmti_breakpoints.clear(bp) == JVMTI_ERROR_NOT_FOUND)
duke@435:     return JVMTI_ERROR_NOT_FOUND;
duke@435: 
duke@435:   if (TraceJVMTICalls) {
duke@435:     jvmti_breakpoints.print();
duke@435:   }
duke@435: 
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end ClearBreakpoint */
duke@435: 
duke@435: 
duke@435:   //
duke@435:   // Watched Field functions
duke@435:   //
duke@435: 
duke@435: jvmtiError
duke@435: JvmtiEnv::SetFieldAccessWatch(fieldDescriptor* fdesc_ptr) {
duke@435:   // make sure we haven't set this watch before
duke@435:   if (fdesc_ptr->is_field_access_watched()) return JVMTI_ERROR_DUPLICATE;
duke@435:   fdesc_ptr->set_is_field_access_watched(true);
duke@435: 
duke@435:   JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_ACCESS, true);
duke@435: 
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end SetFieldAccessWatch */
duke@435: 
duke@435: 
duke@435: jvmtiError
duke@435: JvmtiEnv::ClearFieldAccessWatch(fieldDescriptor* fdesc_ptr) {
duke@435:   // make sure we have a watch to clear
duke@435:   if (!fdesc_ptr->is_field_access_watched()) return JVMTI_ERROR_NOT_FOUND;
duke@435:   fdesc_ptr->set_is_field_access_watched(false);
duke@435: 
duke@435:   JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_ACCESS, false);
duke@435: 
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end ClearFieldAccessWatch */
duke@435: 
duke@435: 
duke@435: jvmtiError
duke@435: JvmtiEnv::SetFieldModificationWatch(fieldDescriptor* fdesc_ptr) {
duke@435:   // make sure we haven't set this watch before
duke@435:   if (fdesc_ptr->is_field_modification_watched()) return JVMTI_ERROR_DUPLICATE;
duke@435:   fdesc_ptr->set_is_field_modification_watched(true);
duke@435: 
duke@435:   JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_MODIFICATION, true);
duke@435: 
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end SetFieldModificationWatch */
duke@435: 
duke@435: 
duke@435: jvmtiError
duke@435: JvmtiEnv::ClearFieldModificationWatch(fieldDescriptor* fdesc_ptr) {
duke@435:    // make sure we have a watch to clear
duke@435:   if (!fdesc_ptr->is_field_modification_watched()) return JVMTI_ERROR_NOT_FOUND;
duke@435:   fdesc_ptr->set_is_field_modification_watched(false);
duke@435: 
duke@435:   JvmtiEventController::change_field_watch(JVMTI_EVENT_FIELD_MODIFICATION, false);
duke@435: 
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end ClearFieldModificationWatch */
duke@435: 
duke@435:   //
duke@435:   // Class functions
duke@435:   //
duke@435: 
duke@435: 
duke@435: // k_mirror - may be primitive, this must be checked
duke@435: // signature_ptr - NULL is a valid value, must be checked
duke@435: // generic_ptr - NULL is a valid value, must be checked
duke@435: jvmtiError
duke@435: JvmtiEnv::GetClassSignature(oop k_mirror, char** signature_ptr, char** generic_ptr) {
duke@435:   ResourceMark rm;
duke@435:   bool isPrimitive = java_lang_Class::is_primitive(k_mirror);
coleenp@4037:   Klass* k = NULL;
duke@435:   if (!isPrimitive) {
coleenp@4037:     k = java_lang_Class::as_Klass(k_mirror);
duke@435:     NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS);
duke@435:   }
duke@435:   if (signature_ptr != NULL) {
duke@435:     char* result = NULL;
duke@435:     if (isPrimitive) {
duke@435:       char tchar = type2char(java_lang_Class::primitive_type(k_mirror));
duke@435:       result = (char*) jvmtiMalloc(2);
duke@435:       result[0] = tchar;
duke@435:       result[1] = '\0';
duke@435:     } else {
hseigel@4278:       const char* class_sig = k->signature_name();
duke@435:       result = (char *) jvmtiMalloc(strlen(class_sig)+1);
duke@435:       strcpy(result, class_sig);
duke@435:     }
duke@435:     *signature_ptr = result;
duke@435:   }
duke@435:   if (generic_ptr != NULL) {
duke@435:     *generic_ptr = NULL;
hseigel@4278:     if (!isPrimitive && k->oop_is_instance()) {
coleenp@4037:       Symbol* soo = InstanceKlass::cast(k)->generic_signature();
duke@435:       if (soo != NULL) {
duke@435:         const char *gen_sig = soo->as_C_string();
duke@435:         if (gen_sig != NULL) {
duke@435:           char* gen_result;
duke@435:           jvmtiError err = allocate(strlen(gen_sig) + 1,
duke@435:                                     (unsigned char **)&gen_result);
duke@435:           if (err != JVMTI_ERROR_NONE) {
duke@435:             return err;
duke@435:           }
duke@435:           strcpy(gen_result, gen_sig);
duke@435:           *generic_ptr = gen_result;
duke@435:         }
duke@435:       }
duke@435:     }
duke@435:   }
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetClassSignature */
duke@435: 
duke@435: 
duke@435: // k_mirror - may be primitive, this must be checked
duke@435: // status_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetClassStatus(oop k_mirror, jint* status_ptr) {
duke@435:   jint result = 0;
duke@435:   if (java_lang_Class::is_primitive(k_mirror)) {
duke@435:     result |= JVMTI_CLASS_STATUS_PRIMITIVE;
duke@435:   } else {
coleenp@4037:     Klass* k = java_lang_Class::as_Klass(k_mirror);
duke@435:     NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS);
hseigel@4278:     result = k->jvmti_class_status();
duke@435:   }
duke@435:   *status_ptr = result;
duke@435: 
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetClassStatus */
duke@435: 
duke@435: 
duke@435: // k_mirror - may be primitive, this must be checked
duke@435: // source_name_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetSourceFileName(oop k_mirror, char** source_name_ptr) {
duke@435:   if (java_lang_Class::is_primitive(k_mirror)) {
duke@435:      return JVMTI_ERROR_ABSENT_INFORMATION;
duke@435:   }
coleenp@4037:   Klass* k_klass = java_lang_Class::as_Klass(k_mirror);
duke@435:   NULL_CHECK(k_klass, JVMTI_ERROR_INVALID_CLASS);
duke@435: 
hseigel@4278:   if (!k_klass->oop_is_instance()) {
duke@435:     return JVMTI_ERROR_ABSENT_INFORMATION;
duke@435:   }
duke@435: 
coleenp@4037:   Symbol* sfnOop = InstanceKlass::cast(k_klass)->source_file_name();
duke@435:   NULL_CHECK(sfnOop, JVMTI_ERROR_ABSENT_INFORMATION);
duke@435:   {
duke@435:     JavaThread* current_thread  = JavaThread::current();
duke@435:     ResourceMark rm(current_thread);
duke@435:     const char* sfncp = (const char*) sfnOop->as_C_string();
duke@435:     *source_name_ptr = (char *) jvmtiMalloc(strlen(sfncp)+1);
duke@435:     strcpy(*source_name_ptr, sfncp);
duke@435:   }
duke@435: 
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetSourceFileName */
duke@435: 
duke@435: 
duke@435: // k_mirror - may be primitive, this must be checked
duke@435: // modifiers_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetClassModifiers(oop k_mirror, jint* modifiers_ptr) {
duke@435:   JavaThread* current_thread  = JavaThread::current();
duke@435:   jint result = 0;
duke@435:   if (!java_lang_Class::is_primitive(k_mirror)) {
coleenp@4037:     Klass* k = java_lang_Class::as_Klass(k_mirror);
duke@435:     NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS);
hseigel@4278:     result = k->compute_modifier_flags(current_thread);
duke@435:     JavaThread* THREAD = current_thread; // pass to macros
duke@435:     if (HAS_PENDING_EXCEPTION) {
duke@435:       CLEAR_PENDING_EXCEPTION;
duke@435:       return JVMTI_ERROR_INTERNAL;
duke@435:     };
duke@435: 
duke@435:     // Reset the deleted  ACC_SUPER bit ( deleted in compute_modifier_flags()).
hseigel@4278:     if(k->is_super()) {
duke@435:       result |= JVM_ACC_SUPER;
duke@435:     }
duke@435:   } else {
duke@435:     result = (JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC);
duke@435:   }
duke@435:   *modifiers_ptr = result;
duke@435: 
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetClassModifiers */
duke@435: 
duke@435: 
duke@435: // k_mirror - may be primitive, this must be checked
duke@435: // method_count_ptr - pre-checked for NULL
duke@435: // methods_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetClassMethods(oop k_mirror, jint* method_count_ptr, jmethodID** methods_ptr) {
duke@435:   JavaThread* current_thread  = JavaThread::current();
duke@435:   HandleMark hm(current_thread);
duke@435: 
duke@435:   if (java_lang_Class::is_primitive(k_mirror)) {
duke@435:     *method_count_ptr = 0;
duke@435:     *methods_ptr = (jmethodID*) jvmtiMalloc(0 * sizeof(jmethodID));
duke@435:     return JVMTI_ERROR_NONE;
duke@435:   }
coleenp@4037:   Klass* k = java_lang_Class::as_Klass(k_mirror);
duke@435:   NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS);
duke@435: 
duke@435:   // Return CLASS_NOT_PREPARED error as per JVMTI spec.
hseigel@4278:   if (!(k->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) {
duke@435:     return JVMTI_ERROR_CLASS_NOT_PREPARED;
duke@435:   }
duke@435: 
hseigel@4278:   if (!k->oop_is_instance()) {
duke@435:     *method_count_ptr = 0;
duke@435:     *methods_ptr = (jmethodID*) jvmtiMalloc(0 * sizeof(jmethodID));
duke@435:     return JVMTI_ERROR_NONE;
duke@435:   }
duke@435:   instanceKlassHandle instanceK_h(current_thread, k);
duke@435:   // Allocate the result and fill it in
duke@435:   int result_length = instanceK_h->methods()->length();
duke@435:   jmethodID* result_list = (jmethodID*)jvmtiMalloc(result_length * sizeof(jmethodID));
duke@435:   int index;
duke@435:   if (JvmtiExport::can_maintain_original_method_order()) {
duke@435:     // Use the original method ordering indices stored in the class, so we can emit
duke@435:     // jmethodIDs in the order they appeared in the class file
duke@435:     for (index = 0; index < result_length; index++) {
coleenp@4037:       Method* m = instanceK_h->methods()->at(index);
coleenp@4037:       int original_index = instanceK_h->method_ordering()->at(index);
duke@435:       assert(original_index >= 0 && original_index < result_length, "invalid original method index");
duke@435:       jmethodID id = m->jmethod_id();
duke@435:       result_list[original_index] = id;
duke@435:     }
duke@435:   } else {
duke@435:     // otherwise just copy in any order
duke@435:     for (index = 0; index < result_length; index++) {
coleenp@4037:       Method* m = instanceK_h->methods()->at(index);
duke@435:       jmethodID id = m->jmethod_id();
duke@435:       result_list[index] = id;
duke@435:     }
duke@435:   }
duke@435:   // Fill in return value.
duke@435:   *method_count_ptr = result_length;
duke@435:   *methods_ptr = result_list;
duke@435: 
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetClassMethods */
duke@435: 
duke@435: 
duke@435: // k_mirror - may be primitive, this must be checked
duke@435: // field_count_ptr - pre-checked for NULL
duke@435: // fields_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetClassFields(oop k_mirror, jint* field_count_ptr, jfieldID** fields_ptr) {
duke@435:   if (java_lang_Class::is_primitive(k_mirror)) {
duke@435:     *field_count_ptr = 0;
duke@435:     *fields_ptr = (jfieldID*) jvmtiMalloc(0 * sizeof(jfieldID));
duke@435:     return JVMTI_ERROR_NONE;
duke@435:   }
duke@435:   JavaThread* current_thread = JavaThread::current();
duke@435:   HandleMark hm(current_thread);
coleenp@4037:   Klass* k = java_lang_Class::as_Klass(k_mirror);
duke@435:   NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS);
duke@435: 
duke@435:   // Return CLASS_NOT_PREPARED error as per JVMTI spec.
hseigel@4278:   if (!(k->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) )) {
duke@435:     return JVMTI_ERROR_CLASS_NOT_PREPARED;
duke@435:   }
duke@435: 
hseigel@4278:   if (!k->oop_is_instance()) {
duke@435:     *field_count_ptr = 0;
duke@435:     *fields_ptr = (jfieldID*) jvmtiMalloc(0 * sizeof(jfieldID));
duke@435:     return JVMTI_ERROR_NONE;
duke@435:   }
duke@435: 
duke@435: 
duke@435:   instanceKlassHandle instanceK_h(current_thread, k);
duke@435: 
duke@435:   int result_count = 0;
duke@435:   // First, count the fields.
duke@435:   FilteredFieldStream flds(instanceK_h, true, true);
duke@435:   result_count = flds.field_count();
duke@435: 
duke@435:   // Allocate the result and fill it in
duke@435:   jfieldID* result_list = (jfieldID*) jvmtiMalloc(result_count * sizeof(jfieldID));
duke@435:   // The JVMTI spec requires fields in the order they occur in the class file,
duke@435:   // this is the reverse order of what FieldStream hands out.
duke@435:   int id_index = (result_count - 1);
duke@435: 
duke@435:   for (FilteredFieldStream src_st(instanceK_h, true, true); !src_st.eos(); src_st.next()) {
duke@435:     result_list[id_index--] = jfieldIDWorkaround::to_jfieldID(
duke@435:                                             instanceK_h, src_st.offset(),
duke@435:                                             src_st.access_flags().is_static());
duke@435:   }
duke@435:   assert(id_index == -1, "just checking");
duke@435:   // Fill in the results
duke@435:   *field_count_ptr = result_count;
duke@435:   *fields_ptr = result_list;
duke@435: 
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetClassFields */
duke@435: 
duke@435: 
duke@435: // k_mirror - may be primitive, this must be checked
duke@435: // interface_count_ptr - pre-checked for NULL
duke@435: // interfaces_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetImplementedInterfaces(oop k_mirror, jint* interface_count_ptr, jclass** interfaces_ptr) {
duke@435:   {
duke@435:     if (java_lang_Class::is_primitive(k_mirror)) {
duke@435:       *interface_count_ptr = 0;
duke@435:       *interfaces_ptr = (jclass*) jvmtiMalloc(0 * sizeof(jclass));
duke@435:       return JVMTI_ERROR_NONE;
duke@435:     }
duke@435:     JavaThread* current_thread = JavaThread::current();
duke@435:     HandleMark hm(current_thread);
coleenp@4037:     Klass* k = java_lang_Class::as_Klass(k_mirror);
duke@435:     NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS);
duke@435: 
duke@435:     // Return CLASS_NOT_PREPARED error as per JVMTI spec.
hseigel@4278:     if (!(k->jvmti_class_status() & (JVMTI_CLASS_STATUS_PREPARED|JVMTI_CLASS_STATUS_ARRAY) ))
duke@435:       return JVMTI_ERROR_CLASS_NOT_PREPARED;
duke@435: 
hseigel@4278:     if (!k->oop_is_instance()) {
duke@435:       *interface_count_ptr = 0;
duke@435:       *interfaces_ptr = (jclass*) jvmtiMalloc(0 * sizeof(jclass));
duke@435:       return JVMTI_ERROR_NONE;
duke@435:     }
duke@435: 
coleenp@4037:     Array<Klass*>* interface_list = InstanceKlass::cast(k)->local_interfaces();
coleenp@4037:     const int result_length = (interface_list == NULL ? 0 : interface_list->length());
duke@435:     jclass* result_list = (jclass*) jvmtiMalloc(result_length * sizeof(jclass));
duke@435:     for (int i_index = 0; i_index < result_length; i_index += 1) {
coleenp@4037:       Klass* klass_at = interface_list->at(i_index);
coleenp@4037:       assert(klass_at->is_klass(), "interfaces must be Klass*s");
hseigel@4278:       assert(klass_at->is_interface(), "interfaces must be interfaces");
hseigel@4278:       oop mirror_at = klass_at->java_mirror();
duke@435:       Handle handle_at = Handle(current_thread, mirror_at);
duke@435:       result_list[i_index] = (jclass) jni_reference(handle_at);
duke@435:     }
duke@435:     *interface_count_ptr = result_length;
duke@435:     *interfaces_ptr = result_list;
duke@435:   }
duke@435: 
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetImplementedInterfaces */
duke@435: 
duke@435: 
duke@435: // k_mirror - may be primitive, this must be checked
duke@435: // minor_version_ptr - pre-checked for NULL
duke@435: // major_version_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetClassVersionNumbers(oop k_mirror, jint* minor_version_ptr, jint* major_version_ptr) {
duke@435:   if (java_lang_Class::is_primitive(k_mirror)) {
duke@435:     return JVMTI_ERROR_ABSENT_INFORMATION;
duke@435:   }
coleenp@4037:   Klass* k_oop = java_lang_Class::as_Klass(k_mirror);
duke@435:   Thread *thread = Thread::current();
duke@435:   HandleMark hm(thread);
duke@435:   KlassHandle klass(thread, k_oop);
duke@435: 
duke@435:   jint status = klass->jvmti_class_status();
duke@435:   if (status & (JVMTI_CLASS_STATUS_ERROR)) {
duke@435:     return JVMTI_ERROR_INVALID_CLASS;
duke@435:   }
duke@435:   if (status & (JVMTI_CLASS_STATUS_ARRAY)) {
duke@435:     return JVMTI_ERROR_ABSENT_INFORMATION;
duke@435:   }
duke@435: 
duke@435:   instanceKlassHandle ik(thread, k_oop);
duke@435:   *minor_version_ptr = ik->minor_version();
duke@435:   *major_version_ptr = ik->major_version();
duke@435: 
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetClassVersionNumbers */
duke@435: 
duke@435: 
duke@435: // k_mirror - may be primitive, this must be checked
duke@435: // constant_pool_count_ptr - pre-checked for NULL
duke@435: // constant_pool_byte_count_ptr - pre-checked for NULL
duke@435: // constant_pool_bytes_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetConstantPool(oop k_mirror, jint* constant_pool_count_ptr, jint* constant_pool_byte_count_ptr, unsigned char** constant_pool_bytes_ptr) {
duke@435:   if (java_lang_Class::is_primitive(k_mirror)) {
duke@435:     return JVMTI_ERROR_ABSENT_INFORMATION;
duke@435:   }
duke@435: 
coleenp@4037:   Klass* k_oop = java_lang_Class::as_Klass(k_mirror);
duke@435:   Thread *thread = Thread::current();
duke@435:   HandleMark hm(thread);
duke@435:   ResourceMark rm(thread);
duke@435:   KlassHandle klass(thread, k_oop);
duke@435: 
duke@435:   jint status = klass->jvmti_class_status();
duke@435:   if (status & (JVMTI_CLASS_STATUS_ERROR)) {
duke@435:     return JVMTI_ERROR_INVALID_CLASS;
duke@435:   }
duke@435:   if (status & (JVMTI_CLASS_STATUS_ARRAY)) {
duke@435:     return JVMTI_ERROR_ABSENT_INFORMATION;
duke@435:   }
duke@435: 
duke@435:   instanceKlassHandle ikh(thread, k_oop);
duke@435:   constantPoolHandle  constants(thread, ikh->constants());
iklam@5971:   MonitorLockerEx ml(constants->lock());    // lock constant pool while we query it
duke@435: 
duke@435:   JvmtiConstantPoolReconstituter reconstituter(ikh);
duke@435:   if (reconstituter.get_error() != JVMTI_ERROR_NONE) {
duke@435:     return reconstituter.get_error();
duke@435:   }
duke@435: 
duke@435:   unsigned char *cpool_bytes;
duke@435:   int cpool_size = reconstituter.cpool_size();
duke@435:   if (reconstituter.get_error() != JVMTI_ERROR_NONE) {
duke@435:     return reconstituter.get_error();
duke@435:   }
duke@435:   jvmtiError res = allocate(cpool_size, &cpool_bytes);
duke@435:   if (res != JVMTI_ERROR_NONE) {
duke@435:     return res;
duke@435:   }
duke@435:   reconstituter.copy_cpool_bytes(cpool_bytes);
duke@435:   if (reconstituter.get_error() != JVMTI_ERROR_NONE) {
duke@435:     return reconstituter.get_error();
duke@435:   }
duke@435: 
duke@435:   *constant_pool_count_ptr      = constants->length();
duke@435:   *constant_pool_byte_count_ptr = cpool_size;
duke@435:   *constant_pool_bytes_ptr      = cpool_bytes;
duke@435: 
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetConstantPool */
duke@435: 
duke@435: 
duke@435: // k_mirror - may be primitive, this must be checked
duke@435: // is_interface_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::IsInterface(oop k_mirror, jboolean* is_interface_ptr) {
duke@435:   {
duke@435:     bool result = false;
duke@435:     if (!java_lang_Class::is_primitive(k_mirror)) {
coleenp@4037:       Klass* k = java_lang_Class::as_Klass(k_mirror);
hseigel@4278:       if (k != NULL && k->is_interface()) {
duke@435:         result = true;
duke@435:       }
duke@435:     }
duke@435:     *is_interface_ptr = result;
duke@435:   }
duke@435: 
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end IsInterface */
duke@435: 
duke@435: 
duke@435: // k_mirror - may be primitive, this must be checked
duke@435: // is_array_class_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::IsArrayClass(oop k_mirror, jboolean* is_array_class_ptr) {
duke@435:   {
duke@435:     bool result = false;
duke@435:     if (!java_lang_Class::is_primitive(k_mirror)) {
coleenp@4037:       Klass* k = java_lang_Class::as_Klass(k_mirror);
hseigel@4278:       if (k != NULL && k->oop_is_array()) {
duke@435:         result = true;
duke@435:       }
duke@435:     }
duke@435:     *is_array_class_ptr = result;
duke@435:   }
duke@435: 
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end IsArrayClass */
duke@435: 
duke@435: 
duke@435: // k_mirror - may be primitive, this must be checked
duke@435: // classloader_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetClassLoader(oop k_mirror, jobject* classloader_ptr) {
duke@435:   {
duke@435:     if (java_lang_Class::is_primitive(k_mirror)) {
duke@435:       *classloader_ptr = (jclass) jni_reference(Handle());
duke@435:       return JVMTI_ERROR_NONE;
duke@435:     }
duke@435:     JavaThread* current_thread = JavaThread::current();
duke@435:     HandleMark hm(current_thread);
coleenp@4037:     Klass* k = java_lang_Class::as_Klass(k_mirror);
duke@435:     NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS);
duke@435: 
hseigel@4278:     oop result_oop = k->class_loader();
duke@435:     if (result_oop == NULL) {
duke@435:       *classloader_ptr = (jclass) jni_reference(Handle());
duke@435:       return JVMTI_ERROR_NONE;
duke@435:     }
duke@435:     Handle result_handle = Handle(current_thread, result_oop);
duke@435:     jclass result_jnihandle = (jclass) jni_reference(result_handle);
duke@435:     *classloader_ptr = result_jnihandle;
duke@435:   }
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetClassLoader */
duke@435: 
duke@435: 
duke@435: // k_mirror - may be primitive, this must be checked
duke@435: // source_debug_extension_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetSourceDebugExtension(oop k_mirror, char** source_debug_extension_ptr) {
duke@435:   {
duke@435:     if (java_lang_Class::is_primitive(k_mirror)) {
duke@435:       return JVMTI_ERROR_ABSENT_INFORMATION;
duke@435:     }
coleenp@4037:     Klass* k = java_lang_Class::as_Klass(k_mirror);
duke@435:     NULL_CHECK(k, JVMTI_ERROR_INVALID_CLASS);
hseigel@4278:     if (!k->oop_is_instance()) {
duke@435:       return JVMTI_ERROR_ABSENT_INFORMATION;
duke@435:     }
coleenp@4037:     char* sde = InstanceKlass::cast(k)->source_debug_extension();
fparain@3906:     NULL_CHECK(sde, JVMTI_ERROR_ABSENT_INFORMATION);
duke@435: 
duke@435:     {
fparain@3906:       *source_debug_extension_ptr = (char *) jvmtiMalloc(strlen(sde)+1);
fparain@3906:       strcpy(*source_debug_extension_ptr, sde);
duke@435:     }
duke@435:   }
duke@435: 
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetSourceDebugExtension */
duke@435: 
duke@435:   //
duke@435:   // Object functions
duke@435:   //
duke@435: 
duke@435: // hash_code_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetObjectHashCode(jobject object, jint* hash_code_ptr) {
duke@435:   oop mirror = JNIHandles::resolve_external_guard(object);
duke@435:   NULL_CHECK(mirror, JVMTI_ERROR_INVALID_OBJECT);
duke@435:   NULL_CHECK(hash_code_ptr, JVMTI_ERROR_NULL_POINTER);
duke@435: 
duke@435:   {
duke@435:     jint result = (jint) mirror->identity_hash();
duke@435:     *hash_code_ptr = result;
duke@435:   }
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetObjectHashCode */
duke@435: 
duke@435: 
duke@435: // info_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetObjectMonitorUsage(jobject object, jvmtiMonitorUsage* info_ptr) {
duke@435:   JavaThread* calling_thread = JavaThread::current();
duke@435:   jvmtiError err = get_object_monitor_usage(calling_thread, object, info_ptr);
duke@435:   if (err == JVMTI_ERROR_THREAD_NOT_SUSPENDED) {
duke@435:     // Some of the critical threads were not suspended. go to a safepoint and try again
duke@435:     VM_GetObjectMonitorUsage op(this, calling_thread, object, info_ptr);
duke@435:     VMThread::execute(&op);
duke@435:     err = op.result();
duke@435:   }
duke@435:   return err;
duke@435: } /* end GetObjectMonitorUsage */
duke@435: 
duke@435: 
duke@435:   //
duke@435:   // Field functions
duke@435:   //
duke@435: 
duke@435: // name_ptr - NULL is a valid value, must be checked
duke@435: // signature_ptr - NULL is a valid value, must be checked
duke@435: // generic_ptr - NULL is a valid value, must be checked
duke@435: jvmtiError
duke@435: JvmtiEnv::GetFieldName(fieldDescriptor* fdesc_ptr, char** name_ptr, char** signature_ptr, char** generic_ptr) {
duke@435:   JavaThread* current_thread  = JavaThread::current();
duke@435:   ResourceMark rm(current_thread);
duke@435:   if (name_ptr == NULL) {
duke@435:     // just don't return the name
duke@435:   } else {
duke@435:     const char* fieldName = fdesc_ptr->name()->as_C_string();
duke@435:     *name_ptr =  (char*) jvmtiMalloc(strlen(fieldName) + 1);
duke@435:     if (*name_ptr == NULL)
duke@435:       return JVMTI_ERROR_OUT_OF_MEMORY;
duke@435:     strcpy(*name_ptr, fieldName);
duke@435:   }
duke@435:   if (signature_ptr== NULL) {
duke@435:     // just don't return the signature
duke@435:   } else {
duke@435:     const char* fieldSignature = fdesc_ptr->signature()->as_C_string();
duke@435:     *signature_ptr = (char*) jvmtiMalloc(strlen(fieldSignature) + 1);
duke@435:     if (*signature_ptr == NULL)
duke@435:       return JVMTI_ERROR_OUT_OF_MEMORY;
duke@435:     strcpy(*signature_ptr, fieldSignature);
duke@435:   }
duke@435:   if (generic_ptr != NULL) {
duke@435:     *generic_ptr = NULL;
coleenp@2497:     Symbol* soop = fdesc_ptr->generic_signature();
duke@435:     if (soop != NULL) {
duke@435:       const char* gen_sig = soop->as_C_string();
duke@435:       if (gen_sig != NULL) {
duke@435:         jvmtiError err = allocate(strlen(gen_sig) + 1, (unsigned char **)generic_ptr);
duke@435:         if (err != JVMTI_ERROR_NONE) {
duke@435:           return err;
duke@435:         }
duke@435:         strcpy(*generic_ptr, gen_sig);
duke@435:       }
duke@435:     }
duke@435:   }
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetFieldName */
duke@435: 
duke@435: 
duke@435: // declaring_class_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetFieldDeclaringClass(fieldDescriptor* fdesc_ptr, jclass* declaring_class_ptr) {
duke@435: 
duke@435:   *declaring_class_ptr = get_jni_class_non_null(fdesc_ptr->field_holder());
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetFieldDeclaringClass */
duke@435: 
duke@435: 
duke@435: // modifiers_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetFieldModifiers(fieldDescriptor* fdesc_ptr, jint* modifiers_ptr) {
duke@435: 
duke@435:   AccessFlags resultFlags = fdesc_ptr->access_flags();
duke@435:   jint result = resultFlags.as_int();
duke@435:   *modifiers_ptr = result;
duke@435: 
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetFieldModifiers */
duke@435: 
duke@435: 
duke@435: // is_synthetic_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::IsFieldSynthetic(fieldDescriptor* fdesc_ptr, jboolean* is_synthetic_ptr) {
duke@435:   *is_synthetic_ptr = fdesc_ptr->is_synthetic();
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end IsFieldSynthetic */
duke@435: 
duke@435: 
duke@435:   //
duke@435:   // Method functions
duke@435:   //
duke@435: 
duke@435: // method_oop - pre-checked for validity, but may be NULL meaning obsolete method
duke@435: // name_ptr - NULL is a valid value, must be checked
duke@435: // signature_ptr - NULL is a valid value, must be checked
duke@435: // generic_ptr - NULL is a valid value, must be checked
duke@435: jvmtiError
coleenp@4037: JvmtiEnv::GetMethodName(Method* method_oop, char** name_ptr, char** signature_ptr, char** generic_ptr) {
duke@435:   NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
duke@435:   JavaThread* current_thread  = JavaThread::current();
duke@435: 
duke@435:   ResourceMark rm(current_thread); // get the utf8 name and signature
duke@435:   if (name_ptr == NULL) {
duke@435:     // just don't return the name
duke@435:   } else {
duke@435:     const char* utf8_name = (const char *) method_oop->name()->as_utf8();
duke@435:     *name_ptr = (char *) jvmtiMalloc(strlen(utf8_name)+1);
duke@435:     strcpy(*name_ptr, utf8_name);
duke@435:   }
duke@435:   if (signature_ptr == NULL) {
duke@435:     // just don't return the signature
duke@435:   } else {
duke@435:     const char* utf8_signature = (const char *) method_oop->signature()->as_utf8();
duke@435:     *signature_ptr = (char *) jvmtiMalloc(strlen(utf8_signature) + 1);
duke@435:     strcpy(*signature_ptr, utf8_signature);
duke@435:   }
duke@435: 
duke@435:   if (generic_ptr != NULL) {
duke@435:     *generic_ptr = NULL;
coleenp@2497:     Symbol* soop = method_oop->generic_signature();
duke@435:     if (soop != NULL) {
duke@435:       const char* gen_sig = soop->as_C_string();
duke@435:       if (gen_sig != NULL) {
duke@435:         jvmtiError err = allocate(strlen(gen_sig) + 1, (unsigned char **)generic_ptr);
duke@435:         if (err != JVMTI_ERROR_NONE) {
duke@435:           return err;
duke@435:         }
duke@435:         strcpy(*generic_ptr, gen_sig);
duke@435:       }
duke@435:     }
duke@435:   }
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetMethodName */
duke@435: 
duke@435: 
duke@435: // method_oop - pre-checked for validity, but may be NULL meaning obsolete method
duke@435: // declaring_class_ptr - pre-checked for NULL
duke@435: jvmtiError
coleenp@4037: JvmtiEnv::GetMethodDeclaringClass(Method* method_oop, jclass* declaring_class_ptr) {
duke@435:   NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
duke@435:   (*declaring_class_ptr) = get_jni_class_non_null(method_oop->method_holder());
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetMethodDeclaringClass */
duke@435: 
duke@435: 
duke@435: // method_oop - pre-checked for validity, but may be NULL meaning obsolete method
duke@435: // modifiers_ptr - pre-checked for NULL
duke@435: jvmtiError
coleenp@4037: JvmtiEnv::GetMethodModifiers(Method* method_oop, jint* modifiers_ptr) {
duke@435:   NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
duke@435:   (*modifiers_ptr) = method_oop->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS;
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetMethodModifiers */
duke@435: 
duke@435: 
duke@435: // method_oop - pre-checked for validity, but may be NULL meaning obsolete method
duke@435: // max_ptr - pre-checked for NULL
duke@435: jvmtiError
coleenp@4037: JvmtiEnv::GetMaxLocals(Method* method_oop, jint* max_ptr) {
duke@435:   NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
duke@435:   // get max stack
duke@435:   (*max_ptr) = method_oop->max_locals();
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetMaxLocals */
duke@435: 
duke@435: 
duke@435: // method_oop - pre-checked for validity, but may be NULL meaning obsolete method
duke@435: // size_ptr - pre-checked for NULL
duke@435: jvmtiError
coleenp@4037: JvmtiEnv::GetArgumentsSize(Method* method_oop, jint* size_ptr) {
duke@435:   NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
duke@435:   // get size of arguments
duke@435: 
duke@435:   (*size_ptr) = method_oop->size_of_parameters();
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetArgumentsSize */
duke@435: 
duke@435: 
duke@435: // method_oop - pre-checked for validity, but may be NULL meaning obsolete method
duke@435: // entry_count_ptr - pre-checked for NULL
duke@435: // table_ptr - pre-checked for NULL
duke@435: jvmtiError
coleenp@4037: JvmtiEnv::GetLineNumberTable(Method* method_oop, jint* entry_count_ptr, jvmtiLineNumberEntry** table_ptr) {
duke@435:   NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
duke@435:   if (!method_oop->has_linenumber_table()) {
duke@435:     return (JVMTI_ERROR_ABSENT_INFORMATION);
duke@435:   }
duke@435: 
duke@435:   // The line number table is compressed so we don't know how big it is until decompressed.
duke@435:   // Decompression is really fast so we just do it twice.
duke@435: 
duke@435:   // Compute size of table
duke@435:   jint num_entries = 0;
duke@435:   CompressedLineNumberReadStream stream(method_oop->compressed_linenumber_table());
duke@435:   while (stream.read_pair()) {
duke@435:     num_entries++;
duke@435:   }
duke@435:   jvmtiLineNumberEntry *jvmti_table =
duke@435:             (jvmtiLineNumberEntry *)jvmtiMalloc(num_entries * (sizeof(jvmtiLineNumberEntry)));
duke@435: 
duke@435:   // Fill jvmti table
duke@435:   if (num_entries > 0) {
duke@435:     int index = 0;
duke@435:     CompressedLineNumberReadStream stream(method_oop->compressed_linenumber_table());
duke@435:     while (stream.read_pair()) {
duke@435:       jvmti_table[index].start_location = (jlocation) stream.bci();
duke@435:       jvmti_table[index].line_number = (jint) stream.line();
duke@435:       index++;
duke@435:     }
duke@435:     assert(index == num_entries, "sanity check");
duke@435:   }
duke@435: 
duke@435:   // Set up results
duke@435:   (*entry_count_ptr) = num_entries;
duke@435:   (*table_ptr) = jvmti_table;
duke@435: 
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetLineNumberTable */
duke@435: 
duke@435: 
duke@435: // method_oop - pre-checked for validity, but may be NULL meaning obsolete method
duke@435: // start_location_ptr - pre-checked for NULL
duke@435: // end_location_ptr - pre-checked for NULL
duke@435: jvmtiError
coleenp@4037: JvmtiEnv::GetMethodLocation(Method* method_oop, jlocation* start_location_ptr, jlocation* end_location_ptr) {
duke@435: 
duke@435:   NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
duke@435:   // get start and end location
duke@435:   (*end_location_ptr) = (jlocation) (method_oop->code_size() - 1);
duke@435:   if (method_oop->code_size() == 0) {
duke@435:     // there is no code so there is no start location
duke@435:     (*start_location_ptr) = (jlocation)(-1);
duke@435:   } else {
duke@435:     (*start_location_ptr) = (jlocation)(0);
duke@435:   }
duke@435: 
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetMethodLocation */
duke@435: 
duke@435: 
duke@435: // method_oop - pre-checked for validity, but may be NULL meaning obsolete method
duke@435: // entry_count_ptr - pre-checked for NULL
duke@435: // table_ptr - pre-checked for NULL
duke@435: jvmtiError
coleenp@4037: JvmtiEnv::GetLocalVariableTable(Method* method_oop, jint* entry_count_ptr, jvmtiLocalVariableEntry** table_ptr) {
duke@435: 
duke@435:   NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
duke@435:   JavaThread* current_thread  = JavaThread::current();
duke@435: 
duke@435:   // does the klass have any local variable information?
coleenp@4251:   InstanceKlass* ik = method_oop->method_holder();
duke@435:   if (!ik->access_flags().has_localvariable_table()) {
duke@435:     return (JVMTI_ERROR_ABSENT_INFORMATION);
duke@435:   }
duke@435: 
coleenp@4037:   ConstantPool* constants = method_oop->constants();
duke@435:   NULL_CHECK(constants, JVMTI_ERROR_ABSENT_INFORMATION);
duke@435: 
duke@435:   // in the vm localvariable table representation, 6 consecutive elements in the table
duke@435:   // represent a 6-tuple of shorts
duke@435:   // [start_pc, length, name_index, descriptor_index, signature_index, index]
duke@435:   jint num_entries = method_oop->localvariable_table_length();
duke@435:   jvmtiLocalVariableEntry *jvmti_table = (jvmtiLocalVariableEntry *)
duke@435:                 jvmtiMalloc(num_entries * (sizeof(jvmtiLocalVariableEntry)));
duke@435: 
duke@435:   if (num_entries > 0) {
duke@435:     LocalVariableTableElement* table = method_oop->localvariable_table_start();
duke@435:     for (int i = 0; i < num_entries; i++) {
duke@435:       // get the 5 tuple information from the vm table
duke@435:       jlocation start_location = (jlocation) table[i].start_bci;
duke@435:       jint length = (jint) table[i].length;
duke@435:       int name_index = (int) table[i].name_cp_index;
duke@435:       int signature_index = (int) table[i].descriptor_cp_index;
duke@435:       int generic_signature_index = (int) table[i].signature_cp_index;
duke@435:       jint slot = (jint) table[i].slot;
duke@435: 
duke@435:       // get utf8 name and signature
duke@435:       char *name_buf = NULL;
duke@435:       char *sig_buf = NULL;
duke@435:       char *gen_sig_buf = NULL;
duke@435:       {
duke@435:         ResourceMark rm(current_thread);
duke@435: 
duke@435:         const char *utf8_name = (const char *) constants->symbol_at(name_index)->as_utf8();
duke@435:         name_buf = (char *) jvmtiMalloc(strlen(utf8_name)+1);
duke@435:         strcpy(name_buf, utf8_name);
duke@435: 
duke@435:         const char *utf8_signature = (const char *) constants->symbol_at(signature_index)->as_utf8();
duke@435:         sig_buf = (char *) jvmtiMalloc(strlen(utf8_signature)+1);
duke@435:         strcpy(sig_buf, utf8_signature);
duke@435: 
duke@435:         if (generic_signature_index > 0) {
duke@435:           const char *utf8_gen_sign = (const char *)
duke@435:                                        constants->symbol_at(generic_signature_index)->as_utf8();
duke@435:           gen_sig_buf = (char *) jvmtiMalloc(strlen(utf8_gen_sign)+1);
duke@435:           strcpy(gen_sig_buf, utf8_gen_sign);
duke@435:         }
duke@435:       }
duke@435: 
duke@435:       // fill in the jvmti local variable table
duke@435:       jvmti_table[i].start_location = start_location;
duke@435:       jvmti_table[i].length = length;
duke@435:       jvmti_table[i].name = name_buf;
duke@435:       jvmti_table[i].signature = sig_buf;
duke@435:       jvmti_table[i].generic_signature = gen_sig_buf;
duke@435:       jvmti_table[i].slot = slot;
duke@435:     }
duke@435:   }
duke@435: 
duke@435:   // set results
duke@435:   (*entry_count_ptr) = num_entries;
duke@435:   (*table_ptr) = jvmti_table;
duke@435: 
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetLocalVariableTable */
duke@435: 
duke@435: 
duke@435: // method_oop - pre-checked for validity, but may be NULL meaning obsolete method
duke@435: // bytecode_count_ptr - pre-checked for NULL
duke@435: // bytecodes_ptr - pre-checked for NULL
duke@435: jvmtiError
coleenp@4037: JvmtiEnv::GetBytecodes(Method* method_oop, jint* bytecode_count_ptr, unsigned char** bytecodes_ptr) {
duke@435:   NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
duke@435: 
duke@435:   HandleMark hm;
duke@435:   methodHandle method(method_oop);
duke@435:   jint size = (jint)method->code_size();
duke@435:   jvmtiError err = allocate(size, bytecodes_ptr);
duke@435:   if (err != JVMTI_ERROR_NONE) {
duke@435:     return err;
duke@435:   }
duke@435: 
duke@435:   (*bytecode_count_ptr) = size;
duke@435:   // get byte codes
duke@435:   JvmtiClassFileReconstituter::copy_bytecodes(method, *bytecodes_ptr);
duke@435: 
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetBytecodes */
duke@435: 
duke@435: 
duke@435: // method_oop - pre-checked for validity, but may be NULL meaning obsolete method
duke@435: // is_native_ptr - pre-checked for NULL
duke@435: jvmtiError
coleenp@4037: JvmtiEnv::IsMethodNative(Method* method_oop, jboolean* is_native_ptr) {
duke@435:   NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
duke@435:   (*is_native_ptr) = method_oop->is_native();
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end IsMethodNative */
duke@435: 
duke@435: 
duke@435: // method_oop - pre-checked for validity, but may be NULL meaning obsolete method
duke@435: // is_synthetic_ptr - pre-checked for NULL
duke@435: jvmtiError
coleenp@4037: JvmtiEnv::IsMethodSynthetic(Method* method_oop, jboolean* is_synthetic_ptr) {
duke@435:   NULL_CHECK(method_oop, JVMTI_ERROR_INVALID_METHODID);
duke@435:   (*is_synthetic_ptr) = method_oop->is_synthetic();
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end IsMethodSynthetic */
duke@435: 
duke@435: 
duke@435: // method_oop - pre-checked for validity, but may be NULL meaning obsolete method
duke@435: // is_obsolete_ptr - pre-checked for NULL
duke@435: jvmtiError
coleenp@4037: JvmtiEnv::IsMethodObsolete(Method* method_oop, jboolean* is_obsolete_ptr) {
dcubed@1556:   if (use_version_1_0_semantics() &&
dcubed@1556:       get_capabilities()->can_redefine_classes == 0) {
dcubed@1556:     // This JvmtiEnv requested version 1.0 semantics and this function
dcubed@1556:     // requires the can_redefine_classes capability in version 1.0 so
dcubed@1556:     // we need to return an error here.
dcubed@1556:     return JVMTI_ERROR_MUST_POSSESS_CAPABILITY;
dcubed@1556:   }
dcubed@1556: 
duke@435:   if (method_oop == NULL || method_oop->is_obsolete()) {
duke@435:     *is_obsolete_ptr = true;
duke@435:   } else {
duke@435:     *is_obsolete_ptr = false;
duke@435:   }
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end IsMethodObsolete */
duke@435: 
duke@435:   //
duke@435:   // Raw Monitor functions
duke@435:   //
duke@435: 
duke@435: // name - pre-checked for NULL
duke@435: // monitor_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::CreateRawMonitor(const char* name, jrawMonitorID* monitor_ptr) {
duke@435:   JvmtiRawMonitor* rmonitor = new JvmtiRawMonitor(name);
duke@435:   NULL_CHECK(rmonitor, JVMTI_ERROR_OUT_OF_MEMORY);
duke@435: 
duke@435:   *monitor_ptr = (jrawMonitorID)rmonitor;
duke@435: 
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end CreateRawMonitor */
duke@435: 
duke@435: 
duke@435: // rmonitor - pre-checked for validity
duke@435: jvmtiError
duke@435: JvmtiEnv::DestroyRawMonitor(JvmtiRawMonitor * rmonitor) {
duke@435:   if (Threads::number_of_threads() == 0) {
duke@435:     // Remove this  monitor from pending raw monitors list
duke@435:     // if it has entered in onload or start phase.
duke@435:     JvmtiPendingMonitors::destroy(rmonitor);
duke@435:   } else {
duke@435:     Thread* thread  = Thread::current();
duke@435:     if (rmonitor->is_entered(thread)) {
duke@435:       // The caller owns this monitor which we are about to destroy.
duke@435:       // We exit the underlying synchronization object so that the
duke@435:       // "delete monitor" call below can work without an assertion
duke@435:       // failure on systems that don't like destroying synchronization
duke@435:       // objects that are locked.
duke@435:       int r;
duke@435:       intptr_t recursion = rmonitor->recursions();
duke@435:       for (intptr_t i=0; i <= recursion; i++) {
duke@435:         r = rmonitor->raw_exit(thread);
duke@435:         assert(r == ObjectMonitor::OM_OK, "raw_exit should have worked");
duke@435:         if (r != ObjectMonitor::OM_OK) {  // robustness
duke@435:           return JVMTI_ERROR_INTERNAL;
duke@435:         }
duke@435:       }
duke@435:     }
duke@435:     if (rmonitor->owner() != NULL) {
duke@435:       // The caller is trying to destroy a monitor that is locked by
duke@435:       // someone else. While this is not forbidden by the JVMTI
duke@435:       // spec, it will cause an assertion failure on systems that don't
duke@435:       // like destroying synchronization objects that are locked.
duke@435:       // We indicate a problem with the error return (and leak the
duke@435:       // monitor's memory).
duke@435:       return JVMTI_ERROR_NOT_MONITOR_OWNER;
duke@435:     }
duke@435:   }
duke@435: 
duke@435:   delete rmonitor;
duke@435: 
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end DestroyRawMonitor */
duke@435: 
duke@435: 
duke@435: // rmonitor - pre-checked for validity
duke@435: jvmtiError
duke@435: JvmtiEnv::RawMonitorEnter(JvmtiRawMonitor * rmonitor) {
duke@435:   if (Threads::number_of_threads() == 0) {
duke@435:     // No JavaThreads exist so ObjectMonitor enter cannot be
duke@435:     // used, add this raw monitor to the pending list.
duke@435:     // The pending monitors will be actually entered when
duke@435:     // the VM is setup.
duke@435:     // See transition_pending_raw_monitors in create_vm()
duke@435:     // in thread.cpp.
duke@435:     JvmtiPendingMonitors::enter(rmonitor);
duke@435:   } else {
duke@435:     int r;
duke@435:     Thread* thread = Thread::current();
duke@435: 
duke@435:     if (thread->is_Java_thread()) {
duke@435:       JavaThread* current_thread = (JavaThread*)thread;
duke@435: 
duke@435: #ifdef PROPER_TRANSITIONS
duke@435:       // Not really unknown but ThreadInVMfromNative does more than we want
duke@435:       ThreadInVMfromUnknown __tiv;
duke@435:       {
duke@435:         ThreadBlockInVM __tbivm(current_thread);
duke@435:         r = rmonitor->raw_enter(current_thread);
duke@435:       }
duke@435: #else
duke@435:       /* Transition to thread_blocked without entering vm state          */
duke@435:       /* This is really evil. Normally you can't undo _thread_blocked    */
duke@435:       /* transitions like this because it would cause us to miss a       */
duke@435:       /* safepoint but since the thread was already in _thread_in_native */
duke@435:       /* the thread is not leaving a safepoint safe state and it will    */
duke@435:       /* block when it tries to return from native. We can't safepoint   */
duke@435:       /* block in here because we could deadlock the vmthread. Blech.    */
duke@435: 
duke@435:       JavaThreadState state = current_thread->thread_state();
duke@435:       assert(state == _thread_in_native, "Must be _thread_in_native");
duke@435:       // frame should already be walkable since we are in native
duke@435:       assert(!current_thread->has_last_Java_frame() ||
duke@435:              current_thread->frame_anchor()->walkable(), "Must be walkable");
duke@435:       current_thread->set_thread_state(_thread_blocked);
duke@435: 
duke@435:       r = rmonitor->raw_enter(current_thread);
duke@435:       // restore state, still at a safepoint safe state
duke@435:       current_thread->set_thread_state(state);
duke@435: 
duke@435: #endif /* PROPER_TRANSITIONS */
duke@435:       assert(r == ObjectMonitor::OM_OK, "raw_enter should have worked");
duke@435:     } else {
duke@435:       if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) {
duke@435:         r = rmonitor->raw_enter(thread);
duke@435:       } else {
duke@435:         ShouldNotReachHere();
duke@435:       }
duke@435:     }
duke@435: 
duke@435:     if (r != ObjectMonitor::OM_OK) {  // robustness
duke@435:       return JVMTI_ERROR_INTERNAL;
duke@435:     }
duke@435:   }
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end RawMonitorEnter */
duke@435: 
duke@435: 
duke@435: // rmonitor - pre-checked for validity
duke@435: jvmtiError
duke@435: JvmtiEnv::RawMonitorExit(JvmtiRawMonitor * rmonitor) {
duke@435:   jvmtiError err = JVMTI_ERROR_NONE;
duke@435: 
duke@435:   if (Threads::number_of_threads() == 0) {
duke@435:     // No JavaThreads exist so just remove this monitor from the pending list.
duke@435:     // Bool value from exit is false if rmonitor is not in the list.
duke@435:     if (!JvmtiPendingMonitors::exit(rmonitor)) {
duke@435:       err = JVMTI_ERROR_NOT_MONITOR_OWNER;
duke@435:     }
duke@435:   } else {
duke@435:     int r;
duke@435:     Thread* thread = Thread::current();
duke@435: 
duke@435:     if (thread->is_Java_thread()) {
duke@435:       JavaThread* current_thread = (JavaThread*)thread;
duke@435: #ifdef PROPER_TRANSITIONS
duke@435:       // Not really unknown but ThreadInVMfromNative does more than we want
duke@435:       ThreadInVMfromUnknown __tiv;
duke@435: #endif /* PROPER_TRANSITIONS */
duke@435:       r = rmonitor->raw_exit(current_thread);
duke@435:     } else {
duke@435:       if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) {
duke@435:         r = rmonitor->raw_exit(thread);
duke@435:       } else {
duke@435:         ShouldNotReachHere();
duke@435:       }
duke@435:     }
duke@435: 
duke@435:     if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) {
duke@435:       err = JVMTI_ERROR_NOT_MONITOR_OWNER;
duke@435:     } else {
duke@435:       assert(r == ObjectMonitor::OM_OK, "raw_exit should have worked");
duke@435:       if (r != ObjectMonitor::OM_OK) {  // robustness
duke@435:         err = JVMTI_ERROR_INTERNAL;
duke@435:       }
duke@435:     }
duke@435:   }
duke@435:   return err;
duke@435: } /* end RawMonitorExit */
duke@435: 
duke@435: 
duke@435: // rmonitor - pre-checked for validity
duke@435: jvmtiError
duke@435: JvmtiEnv::RawMonitorWait(JvmtiRawMonitor * rmonitor, jlong millis) {
duke@435:   int r;
duke@435:   Thread* thread = Thread::current();
duke@435: 
duke@435:   if (thread->is_Java_thread()) {
duke@435:     JavaThread* current_thread = (JavaThread*)thread;
duke@435: #ifdef PROPER_TRANSITIONS
duke@435:     // Not really unknown but ThreadInVMfromNative does more than we want
duke@435:     ThreadInVMfromUnknown __tiv;
duke@435:     {
duke@435:       ThreadBlockInVM __tbivm(current_thread);
duke@435:       r = rmonitor->raw_wait(millis, true, current_thread);
duke@435:     }
duke@435: #else
duke@435:     /* Transition to thread_blocked without entering vm state          */
duke@435:     /* This is really evil. Normally you can't undo _thread_blocked    */
duke@435:     /* transitions like this because it would cause us to miss a       */
duke@435:     /* safepoint but since the thread was already in _thread_in_native */
duke@435:     /* the thread is not leaving a safepoint safe state and it will    */
duke@435:     /* block when it tries to return from native. We can't safepoint   */
duke@435:     /* block in here because we could deadlock the vmthread. Blech.    */
duke@435: 
duke@435:     JavaThreadState state = current_thread->thread_state();
duke@435:     assert(state == _thread_in_native, "Must be _thread_in_native");
duke@435:     // frame should already be walkable since we are in native
duke@435:     assert(!current_thread->has_last_Java_frame() ||
duke@435:            current_thread->frame_anchor()->walkable(), "Must be walkable");
duke@435:     current_thread->set_thread_state(_thread_blocked);
duke@435: 
duke@435:     r = rmonitor->raw_wait(millis, true, current_thread);
duke@435:     // restore state, still at a safepoint safe state
duke@435:     current_thread->set_thread_state(state);
duke@435: 
duke@435: #endif /* PROPER_TRANSITIONS */
duke@435:   } else {
duke@435:     if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) {
duke@435:       r = rmonitor->raw_wait(millis, true, thread);
duke@435:     } else {
duke@435:       ShouldNotReachHere();
duke@435:     }
duke@435:   }
duke@435: 
duke@435:   switch (r) {
duke@435:   case ObjectMonitor::OM_INTERRUPTED:
duke@435:     return JVMTI_ERROR_INTERRUPT;
duke@435:   case ObjectMonitor::OM_ILLEGAL_MONITOR_STATE:
duke@435:     return JVMTI_ERROR_NOT_MONITOR_OWNER;
duke@435:   }
duke@435:   assert(r == ObjectMonitor::OM_OK, "raw_wait should have worked");
duke@435:   if (r != ObjectMonitor::OM_OK) {  // robustness
duke@435:     return JVMTI_ERROR_INTERNAL;
duke@435:   }
duke@435: 
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end RawMonitorWait */
duke@435: 
duke@435: 
duke@435: // rmonitor - pre-checked for validity
duke@435: jvmtiError
duke@435: JvmtiEnv::RawMonitorNotify(JvmtiRawMonitor * rmonitor) {
duke@435:   int r;
duke@435:   Thread* thread = Thread::current();
duke@435: 
duke@435:   if (thread->is_Java_thread()) {
duke@435:     JavaThread* current_thread = (JavaThread*)thread;
duke@435:     // Not really unknown but ThreadInVMfromNative does more than we want
duke@435:     ThreadInVMfromUnknown __tiv;
duke@435:     r = rmonitor->raw_notify(current_thread);
duke@435:   } else {
duke@435:     if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) {
duke@435:       r = rmonitor->raw_notify(thread);
duke@435:     } else {
duke@435:       ShouldNotReachHere();
duke@435:     }
duke@435:   }
duke@435: 
duke@435:   if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) {
duke@435:     return JVMTI_ERROR_NOT_MONITOR_OWNER;
duke@435:   }
duke@435:   assert(r == ObjectMonitor::OM_OK, "raw_notify should have worked");
duke@435:   if (r != ObjectMonitor::OM_OK) {  // robustness
duke@435:     return JVMTI_ERROR_INTERNAL;
duke@435:   }
duke@435: 
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end RawMonitorNotify */
duke@435: 
duke@435: 
duke@435: // rmonitor - pre-checked for validity
duke@435: jvmtiError
duke@435: JvmtiEnv::RawMonitorNotifyAll(JvmtiRawMonitor * rmonitor) {
duke@435:   int r;
duke@435:   Thread* thread = Thread::current();
duke@435: 
duke@435:   if (thread->is_Java_thread()) {
duke@435:     JavaThread* current_thread = (JavaThread*)thread;
duke@435:     ThreadInVMfromUnknown __tiv;
duke@435:     r = rmonitor->raw_notifyAll(current_thread);
duke@435:   } else {
duke@435:     if (thread->is_VM_thread() || thread->is_ConcurrentGC_thread()) {
duke@435:       r = rmonitor->raw_notifyAll(thread);
duke@435:     } else {
duke@435:       ShouldNotReachHere();
duke@435:     }
duke@435:   }
duke@435: 
duke@435:   if (r == ObjectMonitor::OM_ILLEGAL_MONITOR_STATE) {
duke@435:     return JVMTI_ERROR_NOT_MONITOR_OWNER;
duke@435:   }
duke@435:   assert(r == ObjectMonitor::OM_OK, "raw_notifyAll should have worked");
duke@435:   if (r != ObjectMonitor::OM_OK) {  // robustness
duke@435:     return JVMTI_ERROR_INTERNAL;
duke@435:   }
duke@435: 
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end RawMonitorNotifyAll */
duke@435: 
duke@435: 
duke@435:   //
duke@435:   // JNI Function Interception functions
duke@435:   //
duke@435: 
duke@435: 
duke@435: // function_table - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::SetJNIFunctionTable(const jniNativeInterface* function_table) {
duke@435:   // Copy jni function table at safepoint.
duke@435:   VM_JNIFunctionTableCopier copier(function_table);
duke@435:   VMThread::execute(&copier);
duke@435: 
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end SetJNIFunctionTable */
duke@435: 
duke@435: 
duke@435: // function_table - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetJNIFunctionTable(jniNativeInterface** function_table) {
duke@435:   *function_table=(jniNativeInterface*)jvmtiMalloc(sizeof(jniNativeInterface));
duke@435:   if (*function_table == NULL)
duke@435:     return JVMTI_ERROR_OUT_OF_MEMORY;
duke@435:   memcpy(*function_table,(JavaThread::current())->get_jni_functions(),sizeof(jniNativeInterface));
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetJNIFunctionTable */
duke@435: 
duke@435: 
duke@435:   //
duke@435:   // Event Management functions
duke@435:   //
duke@435: 
duke@435: jvmtiError
duke@435: JvmtiEnv::GenerateEvents(jvmtiEvent event_type) {
duke@435:   // can only generate two event types
duke@435:   if (event_type != JVMTI_EVENT_COMPILED_METHOD_LOAD &&
duke@435:       event_type != JVMTI_EVENT_DYNAMIC_CODE_GENERATED) {
duke@435:     return JVMTI_ERROR_ILLEGAL_ARGUMENT;
duke@435:   }
duke@435: 
duke@435:   // for compiled_method_load events we must check that the environment
duke@435:   // has the can_generate_compiled_method_load_events capability.
duke@435:   if (event_type == JVMTI_EVENT_COMPILED_METHOD_LOAD) {
duke@435:     if (get_capabilities()->can_generate_compiled_method_load_events == 0) {
duke@435:       return JVMTI_ERROR_MUST_POSSESS_CAPABILITY;
duke@435:     }
duke@435:     return JvmtiCodeBlobEvents::generate_compiled_method_load_events(this);
duke@435:   } else {
duke@435:     return JvmtiCodeBlobEvents::generate_dynamic_code_events(this);
duke@435:   }
duke@435: 
duke@435: } /* end GenerateEvents */
duke@435: 
duke@435: 
duke@435:   //
duke@435:   // Extension Mechanism functions
duke@435:   //
duke@435: 
duke@435: // extension_count_ptr - pre-checked for NULL
duke@435: // extensions - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetExtensionFunctions(jint* extension_count_ptr, jvmtiExtensionFunctionInfo** extensions) {
duke@435:   return JvmtiExtensions::get_functions(this, extension_count_ptr, extensions);
duke@435: } /* end GetExtensionFunctions */
duke@435: 
duke@435: 
duke@435: // extension_count_ptr - pre-checked for NULL
duke@435: // extensions - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetExtensionEvents(jint* extension_count_ptr, jvmtiExtensionEventInfo** extensions) {
duke@435:   return JvmtiExtensions::get_events(this, extension_count_ptr, extensions);
duke@435: } /* end GetExtensionEvents */
duke@435: 
duke@435: 
duke@435: // callback - NULL is a valid value, must be checked
duke@435: jvmtiError
duke@435: JvmtiEnv::SetExtensionEventCallback(jint extension_event_index, jvmtiExtensionEvent callback) {
duke@435:   return JvmtiExtensions::set_event_callback(this, extension_event_index, callback);
duke@435: } /* end SetExtensionEventCallback */
duke@435: 
duke@435:   //
duke@435:   // Timers functions
duke@435:   //
duke@435: 
duke@435: // info_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetCurrentThreadCpuTimerInfo(jvmtiTimerInfo* info_ptr) {
duke@435:   os::current_thread_cpu_time_info(info_ptr);
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetCurrentThreadCpuTimerInfo */
duke@435: 
duke@435: 
duke@435: // nanos_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetCurrentThreadCpuTime(jlong* nanos_ptr) {
duke@435:   *nanos_ptr = os::current_thread_cpu_time();
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetCurrentThreadCpuTime */
duke@435: 
duke@435: 
duke@435: // info_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetThreadCpuTimerInfo(jvmtiTimerInfo* info_ptr) {
duke@435:   os::thread_cpu_time_info(info_ptr);
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetThreadCpuTimerInfo */
duke@435: 
duke@435: 
duke@435: // Threads_lock NOT held, java_thread not protected by lock
duke@435: // java_thread - pre-checked
duke@435: // nanos_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetThreadCpuTime(JavaThread* java_thread, jlong* nanos_ptr) {
duke@435:   *nanos_ptr = os::thread_cpu_time(java_thread);
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetThreadCpuTime */
duke@435: 
duke@435: 
duke@435: // info_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetTimerInfo(jvmtiTimerInfo* info_ptr) {
duke@435:   os::javaTimeNanos_info(info_ptr);
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetTimerInfo */
duke@435: 
duke@435: 
duke@435: // nanos_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetTime(jlong* nanos_ptr) {
duke@435:   *nanos_ptr = os::javaTimeNanos();
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetTime */
duke@435: 
duke@435: 
duke@435: // processor_count_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetAvailableProcessors(jint* processor_count_ptr) {
duke@435:   *processor_count_ptr = os::active_processor_count();
duke@435:   return JVMTI_ERROR_NONE;
duke@435: } /* end GetAvailableProcessors */
duke@435: 
duke@435:   //
duke@435:   // System Properties functions
duke@435:   //
duke@435: 
duke@435: // count_ptr - pre-checked for NULL
duke@435: // property_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetSystemProperties(jint* count_ptr, char*** property_ptr) {
duke@435:   jvmtiError err = JVMTI_ERROR_NONE;
duke@435: 
duke@435:   *count_ptr = Arguments::PropertyList_count(Arguments::system_properties());
duke@435: 
duke@435:   err = allocate(*count_ptr * sizeof(char *), (unsigned char **)property_ptr);
duke@435:   if (err != JVMTI_ERROR_NONE) {
duke@435:     return err;
duke@435:   }
duke@435:   int i = 0 ;
duke@435:   for (SystemProperty* p = Arguments::system_properties(); p != NULL && i < *count_ptr; p = p->next(), i++) {
duke@435:     const char *key = p->key();
duke@435:     char **tmp_value = *property_ptr+i;
duke@435:     err = allocate((strlen(key)+1) * sizeof(char), (unsigned char**)tmp_value);
duke@435:     if (err == JVMTI_ERROR_NONE) {
duke@435:       strcpy(*tmp_value, key);
duke@435:     } else {
duke@435:       // clean up previously allocated memory.
duke@435:       for (int j=0; j<i; j++) {
duke@435:         Deallocate((unsigned char*)*property_ptr+j);
duke@435:       }
duke@435:       Deallocate((unsigned char*)property_ptr);
duke@435:       break;
duke@435:     }
duke@435:   }
duke@435:   return err;
duke@435: } /* end GetSystemProperties */
duke@435: 
duke@435: 
duke@435: // property - pre-checked for NULL
duke@435: // value_ptr - pre-checked for NULL
duke@435: jvmtiError
duke@435: JvmtiEnv::GetSystemProperty(const char* property, char** value_ptr) {
duke@435:   jvmtiError err = JVMTI_ERROR_NONE;
duke@435:   const char *value;
duke@435: 
duke@435:   value = Arguments::PropertyList_get_value(Arguments::system_properties(), property);
duke@435:   if (value == NULL) {
duke@435:     err =  JVMTI_ERROR_NOT_AVAILABLE;
duke@435:   } else {
duke@435:     err = allocate((strlen(value)+1) * sizeof(char), (unsigned char **)value_ptr);
duke@435:     if (err == JVMTI_ERROR_NONE) {
duke@435:       strcpy(*value_ptr, value);
duke@435:     }
duke@435:   }
duke@435:   return err;
duke@435: } /* end GetSystemProperty */
duke@435: 
duke@435: 
duke@435: // property - pre-checked for NULL
duke@435: // value - NULL is a valid value, must be checked
duke@435: jvmtiError
phh@2423: JvmtiEnv::SetSystemProperty(const char* property, const char* value_ptr) {
duke@435:   jvmtiError err =JVMTI_ERROR_NOT_AVAILABLE;
duke@435: 
duke@435:   for (SystemProperty* p = Arguments::system_properties(); p != NULL; p = p->next()) {
duke@435:     if (strcmp(property, p->key()) == 0) {
phh@2423:       if (p->set_value((char *)value_ptr)) {
duke@435:         err =  JVMTI_ERROR_NONE;
duke@435:       }
duke@435:     }
duke@435:   }
duke@435:   return err;
duke@435: } /* end SetSystemProperty */