author | manc |
Wed, 01 May 2019 20:25:31 -0700 | |
changeset 54690 | 7ab4310ed472 |
parent 54674 | 27c8a2e0b0e5 |
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permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2003, 2019, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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#ifndef SHARE_PRIMS_JVMTIENVBASE_HPP |
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#define SHARE_PRIMS_JVMTIENVBASE_HPP |
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#include "classfile/classLoader.hpp" |
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#include "prims/jvmtiEnvThreadState.hpp" |
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#include "prims/jvmtiEventController.hpp" |
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#include "prims/jvmtiThreadState.hpp" |
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#include "oops/oopHandle.hpp" |
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#include "runtime/fieldDescriptor.hpp" |
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#include "runtime/frame.hpp" |
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#include "runtime/orderAccess.hpp" |
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#include "runtime/thread.hpp" |
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#include "runtime/vmOperations.hpp" |
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#include "utilities/growableArray.hpp" |
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#include "utilities/macros.hpp" |
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// |
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// Forward Declarations |
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// |
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class JvmtiEnv; |
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class JvmtiThreadState; |
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class JvmtiRawMonitor; // for jvmtiEnv.hpp |
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class JvmtiEventControllerPrivate; |
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class JvmtiTagMap; |
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// One JvmtiEnv object is created per jvmti attachment; |
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// done via JNI GetEnv() call. Multiple attachments are |
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// allowed in jvmti. |
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class JvmtiEnvBase : public CHeapObj<mtInternal> { |
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private: |
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#if INCLUDE_JVMTI |
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static JvmtiEnvBase* _head_environment; // head of environment list |
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#endif // INCLUDE_JVMTI |
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static bool _globally_initialized; |
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static jvmtiPhase _phase; |
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static volatile int _dying_thread_env_iteration_count; |
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public: |
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enum { |
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JDK15_JVMTI_VERSION = JVMTI_VERSION_1_0 + 33, /* version: 1.0.33 */ |
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JDK16_JVMTI_VERSION = JVMTI_VERSION_1_1 + 102, /* version: 1.1.102 */ |
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JDK17_JVMTI_VERSION = JVMTI_VERSION_1_2 + 2 /* version: 1.2.2 */ |
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}; |
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static jvmtiPhase get_phase() { return _phase; } |
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static jvmtiPhase get_phase(jvmtiEnv* env) { return ((JvmtiEnvBase*)JvmtiEnv_from_jvmti_env(env))->phase(); } |
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static void set_phase(jvmtiPhase phase) { _phase = phase; } |
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static bool is_vm_live() { return _phase == JVMTI_PHASE_LIVE; } |
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static void entering_dying_thread_env_iteration() { ++_dying_thread_env_iteration_count; } |
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static void leaving_dying_thread_env_iteration() { --_dying_thread_env_iteration_count; } |
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static bool is_inside_dying_thread_env_iteration(){ return _dying_thread_env_iteration_count > 0; } |
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private: |
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enum { |
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JVMTI_MAGIC = 0x71EE, |
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DISPOSED_MAGIC = 0xDEFC, |
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BAD_MAGIC = 0xDEAD |
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}; |
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jvmtiEnv _jvmti_external; |
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jint _magic; |
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jint _version; // version value passed to JNI GetEnv() |
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JvmtiEnvBase* _next; |
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bool _is_retransformable; |
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const void *_env_local_storage; // per env agent allocated data. |
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jvmtiEventCallbacks _event_callbacks; |
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jvmtiExtEventCallbacks _ext_event_callbacks; |
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JvmtiTagMap* volatile _tag_map; |
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JvmtiEnvEventEnable _env_event_enable; |
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jvmtiCapabilities _current_capabilities; |
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jvmtiCapabilities _prohibited_capabilities; |
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volatile bool _class_file_load_hook_ever_enabled; |
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static volatile bool _needs_clean_up; |
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char** _native_method_prefixes; |
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int _native_method_prefix_count; |
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protected: |
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JvmtiEnvBase(jint version); |
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~JvmtiEnvBase(); |
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void dispose(); |
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void env_dispose(); |
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void set_env_local_storage(const void* data) { _env_local_storage = data; } |
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const void* get_env_local_storage() { return _env_local_storage; } |
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void record_class_file_load_hook_enabled(); |
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void record_first_time_class_file_load_hook_enabled(); |
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char** get_native_method_prefixes() { return _native_method_prefixes; } |
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int get_native_method_prefix_count() { return _native_method_prefix_count; } |
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jvmtiError set_native_method_prefixes(jint prefix_count, char** prefixes); |
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private: |
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friend class JvmtiEventControllerPrivate; |
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void initialize(); |
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void set_event_callbacks(const jvmtiEventCallbacks* callbacks, jint size_of_callbacks); |
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static void globally_initialize(); |
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static void periodic_clean_up(); |
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friend class JvmtiEnvIterator; |
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JvmtiEnv* next_environment() { return (JvmtiEnv*)_next; } |
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void set_next_environment(JvmtiEnvBase* env) { _next = env; } |
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static JvmtiEnv* head_environment() { |
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JVMTI_ONLY(return (JvmtiEnv*)_head_environment); |
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NOT_JVMTI(return NULL); |
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} |
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public: |
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jvmtiPhase phase(); |
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bool is_valid(); |
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bool use_version_1_0_semantics(); // agent asked for version 1.0 |
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bool use_version_1_1_semantics(); // agent asked for version 1.1 |
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bool use_version_1_2_semantics(); // agent asked for version 1.2 |
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bool is_retransformable() { return _is_retransformable; } |
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static ByteSize jvmti_external_offset() { |
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return byte_offset_of(JvmtiEnvBase, _jvmti_external); |
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}; |
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static JvmtiEnv* JvmtiEnv_from_jvmti_env(jvmtiEnv *env) { |
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return (JvmtiEnv*)((intptr_t)env - in_bytes(jvmti_external_offset())); |
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}; |
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jvmtiCapabilities *get_capabilities() { return &_current_capabilities; } |
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jvmtiCapabilities *get_prohibited_capabilities() { return &_prohibited_capabilities; } |
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bool early_class_hook_env() { |
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return get_capabilities()->can_generate_early_class_hook_events != 0 |
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&& get_capabilities()->can_generate_all_class_hook_events != 0; |
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} |
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bool early_vmstart_env() { |
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return get_capabilities()->can_generate_early_vmstart != 0; |
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} |
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static char** get_all_native_method_prefixes(int* count_ptr); |
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// This test will answer true when all environments have been disposed and some have |
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// not yet been deallocated. As a result, this test should only be used as an |
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// optimization for the no environment case. |
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static bool environments_might_exist() { |
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return head_environment() != NULL; |
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} |
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static void check_for_periodic_clean_up(); |
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JvmtiEnvEventEnable *env_event_enable() { |
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return &_env_event_enable; |
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} |
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jvmtiError allocate(jlong size, unsigned char** mem_ptr) { |
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if (size < 0) { |
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return JVMTI_ERROR_ILLEGAL_ARGUMENT; |
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} |
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if (size == 0) { |
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*mem_ptr = NULL; |
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} else { |
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*mem_ptr = (unsigned char *)os::malloc((size_t)size, mtInternal); |
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if (*mem_ptr == NULL) { |
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return JVMTI_ERROR_OUT_OF_MEMORY; |
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} |
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} |
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return JVMTI_ERROR_NONE; |
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} |
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jvmtiError deallocate(unsigned char* mem) { |
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if (mem != NULL) { |
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os::free(mem); |
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} |
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return JVMTI_ERROR_NONE; |
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} |
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// Memory functions |
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unsigned char* jvmtiMalloc(jlong size); // don't use this - call allocate |
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// method to create a local handle |
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jobject jni_reference(Handle hndl); |
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// method to create a local handle. |
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// This function allows caller to specify which |
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// threads local handle table to use. |
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jobject jni_reference(JavaThread *thread, Handle hndl); |
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// method to destroy a local handle |
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void destroy_jni_reference(jobject jobj); |
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// method to destroy a local handle. |
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// This function allows caller to specify which |
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// threads local handle table to use. |
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void destroy_jni_reference(JavaThread *thread, jobject jobj); |
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jvmtiEnv* jvmti_external() { return &_jvmti_external; }; |
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// Event Dispatch |
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bool has_callback(jvmtiEvent event_type) { |
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assert(event_type >= JVMTI_MIN_EVENT_TYPE_VAL && |
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event_type <= JVMTI_MAX_EVENT_TYPE_VAL, "checking"); |
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return ((void**)&_event_callbacks)[event_type-JVMTI_MIN_EVENT_TYPE_VAL] != NULL; |
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} |
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jvmtiEventCallbacks* callbacks() { |
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return &_event_callbacks; |
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} |
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jvmtiExtEventCallbacks* ext_callbacks() { |
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return &_ext_event_callbacks; |
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} |
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void set_tag_map(JvmtiTagMap* tag_map) { |
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_tag_map = tag_map; |
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} |
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JvmtiTagMap* tag_map() { |
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return _tag_map; |
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} |
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JvmtiTagMap* tag_map_acquire() { |
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return OrderAccess::load_acquire(&_tag_map); |
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} |
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void release_set_tag_map(JvmtiTagMap* tag_map) { |
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OrderAccess::release_store(&_tag_map, tag_map); |
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} |
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// return true if event is enabled globally or for any thread |
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// True only if there is a callback for it. |
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bool is_enabled(jvmtiEvent event_type) { |
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return _env_event_enable.is_enabled(event_type); |
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} |
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// Random Utilities |
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protected: |
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// helper methods for creating arrays of global JNI Handles from local Handles |
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// allocated into environment specific storage |
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jobject * new_jobjectArray(int length, Handle *handles); |
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jthread * new_jthreadArray(int length, Handle *handles); |
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jthreadGroup * new_jthreadGroupArray(int length, Handle *handles); |
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// convert to a jni jclass from a non-null Klass* |
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jclass get_jni_class_non_null(Klass* k); |
1 | 282 |
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jint count_locked_objects(JavaThread *java_thread, Handle hobj); |
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jvmtiError get_locked_objects_in_frame(JavaThread *calling_thread, |
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JavaThread* java_thread, |
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javaVFrame *jvf, |
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GrowableArray<jvmtiMonitorStackDepthInfo*>* owned_monitors_list, |
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jint depth); |
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vframe* vframeFor(JavaThread* java_thread, jint depth); |
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public: |
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// get a field descriptor for the specified class and field |
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static bool get_field_descriptor(Klass* k, jfieldID field, fieldDescriptor* fd); |
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// JVMTI API helper functions which are called at safepoint or thread is suspended. |
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jvmtiError get_frame_count(JvmtiThreadState *state, jint *count_ptr); |
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jvmtiError get_frame_location(JavaThread* java_thread, jint depth, |
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jmethodID* method_ptr, jlocation* location_ptr); |
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jvmtiError get_object_monitor_usage(JavaThread *calling_thread, |
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jobject object, jvmtiMonitorUsage* info_ptr); |
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jvmtiError get_stack_trace(JavaThread *java_thread, |
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jint stack_depth, jint max_count, |
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jvmtiFrameInfo* frame_buffer, jint* count_ptr); |
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jvmtiError get_current_contended_monitor(JavaThread *calling_thread, |
|
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JavaThread *java_thread, |
|
306 |
jobject *monitor_ptr); |
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307 |
jvmtiError get_owned_monitors(JavaThread *calling_thread, JavaThread* java_thread, |
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GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors_list); |
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jvmtiError check_top_frame(JavaThread* current_thread, JavaThread* java_thread, |
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jvalue value, TosState tos, Handle* ret_ob_h); |
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jvmtiError force_early_return(JavaThread* java_thread, jvalue value, TosState tos); |
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}; |
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313 |
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// This class is the only safe means of iterating through environments. |
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// Note that this iteratation includes invalid environments pending |
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// deallocation -- in fact, some uses depend on this behavior. |
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class JvmtiEnvIterator : public StackObj { |
|
319 |
private: |
|
320 |
bool _entry_was_marked; |
|
321 |
public: |
|
322 |
JvmtiEnvIterator() { |
|
323 |
if (Threads::number_of_threads() == 0) { |
|
324 |
_entry_was_marked = false; // we are single-threaded, no need |
|
325 |
} else { |
|
326 |
Thread::current()->entering_jvmti_env_iteration(); |
|
327 |
_entry_was_marked = true; |
|
328 |
} |
|
329 |
} |
|
330 |
~JvmtiEnvIterator() { |
|
331 |
if (_entry_was_marked) { |
|
332 |
Thread::current()->leaving_jvmti_env_iteration(); |
|
333 |
} |
|
334 |
} |
|
335 |
JvmtiEnv* first() { return JvmtiEnvBase::head_environment(); } |
|
336 |
JvmtiEnv* next(JvmtiEnvBase* env) { return env->next_environment(); } |
|
337 |
}; |
|
338 |
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// VM operation to update for pop top frame. |
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340 |
class VM_UpdateForPopTopFrame : public VM_Operation { |
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341 |
private: |
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342 |
JvmtiThreadState* _state; |
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jvmtiError _result; |
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|
344 |
|
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|
345 |
public: |
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VM_UpdateForPopTopFrame(JvmtiThreadState* state) { |
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_state = state; |
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_result = JVMTI_ERROR_NONE; |
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|
349 |
} |
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|
350 |
VMOp_Type type() const { return VMOp_UpdateForPopTopFrame; } |
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|
351 |
jvmtiError result() { return _result; } |
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void doit(); |
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|
353 |
}; |
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|
354 |
|
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|
355 |
// VM operation to set frame pop. |
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|
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class VM_SetFramePop : public VM_Operation { |
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357 |
private: |
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JvmtiEnv *_env; |
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|
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JvmtiThreadState* _state; |
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|
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jint _depth; |
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|
361 |
jvmtiError _result; |
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|
362 |
|
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|
363 |
public: |
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|
364 |
VM_SetFramePop(JvmtiEnv *env, JvmtiThreadState* state, jint depth) { |
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|
365 |
_env = env; |
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|
366 |
_state = state; |
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|
367 |
_depth = depth; |
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|
368 |
_result = JVMTI_ERROR_NONE; |
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|
369 |
} |
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|
370 |
// Nested operation must be allowed for the VM_EnterInterpOnlyMode that is |
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|
371 |
// called from the JvmtiEventControllerPrivate::recompute_thread_enabled. |
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|
372 |
bool allow_nested_vm_operations() const { return true; } |
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|
373 |
VMOp_Type type() const { return VMOp_SetFramePop; } |
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|
374 |
jvmtiError result() { return _result; } |
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375 |
void doit(); |
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|
376 |
}; |
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|
377 |
|
1 | 378 |
|
379 |
// VM operation to get monitor information with stack depth. |
|
380 |
class VM_GetOwnedMonitorInfo : public VM_Operation { |
|
381 |
private: |
|
382 |
JvmtiEnv *_env; |
|
383 |
JavaThread* _calling_thread; |
|
384 |
JavaThread *_java_thread; |
|
385 |
jvmtiError _result; |
|
386 |
GrowableArray<jvmtiMonitorStackDepthInfo*> *_owned_monitors_list; |
|
387 |
||
388 |
public: |
|
389 |
VM_GetOwnedMonitorInfo(JvmtiEnv* env, JavaThread* calling_thread, |
|
390 |
JavaThread* java_thread, |
|
391 |
GrowableArray<jvmtiMonitorStackDepthInfo*>* owned_monitor_list) { |
|
392 |
_env = env; |
|
393 |
_calling_thread = calling_thread; |
|
394 |
_java_thread = java_thread; |
|
395 |
_owned_monitors_list = owned_monitor_list; |
|
396 |
_result = JVMTI_ERROR_NONE; |
|
397 |
} |
|
398 |
VMOp_Type type() const { return VMOp_GetOwnedMonitorInfo; } |
|
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|
399 |
void doit(); |
1 | 400 |
jvmtiError result() { return _result; } |
401 |
}; |
|
402 |
||
403 |
||
404 |
// VM operation to get object monitor usage. |
|
405 |
class VM_GetObjectMonitorUsage : public VM_Operation { |
|
406 |
private: |
|
407 |
JvmtiEnv *_env; |
|
408 |
jobject _object; |
|
409 |
JavaThread* _calling_thread; |
|
410 |
jvmtiMonitorUsage* _info_ptr; |
|
411 |
jvmtiError _result; |
|
412 |
||
413 |
public: |
|
414 |
VM_GetObjectMonitorUsage(JvmtiEnv *env, JavaThread* calling_thread, jobject object, jvmtiMonitorUsage* info_ptr) { |
|
415 |
_env = env; |
|
416 |
_object = object; |
|
417 |
_calling_thread = calling_thread; |
|
418 |
_info_ptr = info_ptr; |
|
419 |
} |
|
420 |
VMOp_Type type() const { return VMOp_GetObjectMonitorUsage; } |
|
421 |
jvmtiError result() { return _result; } |
|
422 |
void doit() { |
|
423 |
_result = ((JvmtiEnvBase*) _env)->get_object_monitor_usage(_calling_thread, _object, _info_ptr); |
|
424 |
} |
|
425 |
||
426 |
}; |
|
427 |
||
428 |
// VM operation to get current contended monitor. |
|
429 |
class VM_GetCurrentContendedMonitor : public VM_Operation { |
|
430 |
private: |
|
431 |
JvmtiEnv *_env; |
|
432 |
JavaThread *_calling_thread; |
|
433 |
JavaThread *_java_thread; |
|
434 |
jobject *_owned_monitor_ptr; |
|
435 |
jvmtiError _result; |
|
436 |
||
437 |
public: |
|
438 |
VM_GetCurrentContendedMonitor(JvmtiEnv *env, JavaThread *calling_thread, JavaThread *java_thread, jobject *mon_ptr) { |
|
439 |
_env = env; |
|
440 |
_calling_thread = calling_thread; |
|
441 |
_java_thread = java_thread; |
|
442 |
_owned_monitor_ptr = mon_ptr; |
|
443 |
} |
|
444 |
VMOp_Type type() const { return VMOp_GetCurrentContendedMonitor; } |
|
445 |
jvmtiError result() { return _result; } |
|
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|
446 |
void doit(); |
1 | 447 |
}; |
448 |
||
449 |
// VM operation to get stack trace at safepoint. |
|
450 |
class VM_GetStackTrace : public VM_Operation { |
|
451 |
private: |
|
452 |
JvmtiEnv *_env; |
|
453 |
JavaThread *_java_thread; |
|
454 |
jint _start_depth; |
|
455 |
jint _max_count; |
|
456 |
jvmtiFrameInfo *_frame_buffer; |
|
457 |
jint *_count_ptr; |
|
458 |
jvmtiError _result; |
|
459 |
||
460 |
public: |
|
461 |
VM_GetStackTrace(JvmtiEnv *env, JavaThread *java_thread, |
|
462 |
jint start_depth, jint max_count, |
|
463 |
jvmtiFrameInfo* frame_buffer, jint* count_ptr) { |
|
464 |
_env = env; |
|
465 |
_java_thread = java_thread; |
|
466 |
_start_depth = start_depth; |
|
467 |
_max_count = max_count; |
|
468 |
_frame_buffer = frame_buffer; |
|
469 |
_count_ptr = count_ptr; |
|
470 |
} |
|
471 |
jvmtiError result() { return _result; } |
|
472 |
VMOp_Type type() const { return VMOp_GetStackTrace; } |
|
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|
473 |
void doit(); |
1 | 474 |
}; |
475 |
||
476 |
// forward declaration |
|
477 |
struct StackInfoNode; |
|
478 |
||
479 |
// VM operation to get stack trace at safepoint. |
|
480 |
class VM_GetMultipleStackTraces : public VM_Operation { |
|
481 |
private: |
|
482 |
JvmtiEnv *_env; |
|
483 |
jint _max_frame_count; |
|
484 |
jvmtiStackInfo *_stack_info; |
|
485 |
jvmtiError _result; |
|
486 |
int _frame_count_total; |
|
487 |
struct StackInfoNode *_head; |
|
488 |
||
489 |
JvmtiEnvBase *env() { return (JvmtiEnvBase *)_env; } |
|
490 |
jint max_frame_count() { return _max_frame_count; } |
|
491 |
struct StackInfoNode *head() { return _head; } |
|
492 |
void set_head(StackInfoNode *head) { _head = head; } |
|
493 |
||
494 |
protected: |
|
495 |
void set_result(jvmtiError result) { _result = result; } |
|
496 |
void fill_frames(jthread jt, JavaThread *thr, oop thread_oop); |
|
497 |
void allocate_and_fill_stacks(jint thread_count); |
|
498 |
||
499 |
public: |
|
500 |
VM_GetMultipleStackTraces(JvmtiEnv *env, jint max_frame_count) { |
|
501 |
_env = env; |
|
502 |
_max_frame_count = max_frame_count; |
|
503 |
_frame_count_total = 0; |
|
504 |
_head = NULL; |
|
505 |
_result = JVMTI_ERROR_NONE; |
|
506 |
} |
|
507 |
VMOp_Type type() const { return VMOp_GetMultipleStackTraces; } |
|
508 |
jvmtiStackInfo *stack_info() { return _stack_info; } |
|
509 |
jvmtiError result() { return _result; } |
|
510 |
}; |
|
511 |
||
512 |
||
513 |
// VM operation to get stack trace at safepoint. |
|
514 |
class VM_GetAllStackTraces : public VM_GetMultipleStackTraces { |
|
515 |
private: |
|
516 |
JavaThread *_calling_thread; |
|
517 |
jint _final_thread_count; |
|
518 |
||
519 |
public: |
|
520 |
VM_GetAllStackTraces(JvmtiEnv *env, JavaThread *calling_thread, |
|
521 |
jint max_frame_count) |
|
522 |
: VM_GetMultipleStackTraces(env, max_frame_count) { |
|
523 |
_calling_thread = calling_thread; |
|
524 |
} |
|
525 |
VMOp_Type type() const { return VMOp_GetAllStackTraces; } |
|
526 |
void doit(); |
|
527 |
jint final_thread_count() { return _final_thread_count; } |
|
528 |
}; |
|
529 |
||
530 |
// VM operation to get stack trace at safepoint. |
|
531 |
class VM_GetThreadListStackTraces : public VM_GetMultipleStackTraces { |
|
532 |
private: |
|
533 |
jint _thread_count; |
|
534 |
const jthread* _thread_list; |
|
535 |
||
536 |
public: |
|
537 |
VM_GetThreadListStackTraces(JvmtiEnv *env, jint thread_count, const jthread* thread_list, jint max_frame_count) |
|
538 |
: VM_GetMultipleStackTraces(env, max_frame_count) { |
|
539 |
_thread_count = thread_count; |
|
540 |
_thread_list = thread_list; |
|
541 |
} |
|
542 |
VMOp_Type type() const { return VMOp_GetThreadListStackTraces; } |
|
543 |
void doit(); |
|
544 |
}; |
|
545 |
||
546 |
||
547 |
// VM operation to count stack frames at safepoint. |
|
548 |
class VM_GetFrameCount : public VM_Operation { |
|
549 |
private: |
|
550 |
JvmtiEnv *_env; |
|
551 |
JvmtiThreadState *_state; |
|
552 |
jint *_count_ptr; |
|
553 |
jvmtiError _result; |
|
554 |
||
555 |
public: |
|
556 |
VM_GetFrameCount(JvmtiEnv *env, JvmtiThreadState *state, jint *count_ptr) { |
|
557 |
_env = env; |
|
558 |
_state = state; |
|
559 |
_count_ptr = count_ptr; |
|
560 |
} |
|
561 |
VMOp_Type type() const { return VMOp_GetFrameCount; } |
|
562 |
jvmtiError result() { return _result; } |
|
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|
563 |
void doit(); |
1 | 564 |
}; |
565 |
||
566 |
// VM operation to frame location at safepoint. |
|
567 |
class VM_GetFrameLocation : public VM_Operation { |
|
568 |
private: |
|
569 |
JvmtiEnv *_env; |
|
570 |
JavaThread* _java_thread; |
|
571 |
jint _depth; |
|
572 |
jmethodID* _method_ptr; |
|
573 |
jlocation* _location_ptr; |
|
574 |
jvmtiError _result; |
|
575 |
||
576 |
public: |
|
577 |
VM_GetFrameLocation(JvmtiEnv *env, JavaThread* java_thread, jint depth, |
|
578 |
jmethodID* method_ptr, jlocation* location_ptr) { |
|
579 |
_env = env; |
|
580 |
_java_thread = java_thread; |
|
581 |
_depth = depth; |
|
582 |
_method_ptr = method_ptr; |
|
583 |
_location_ptr = location_ptr; |
|
584 |
} |
|
585 |
VMOp_Type type() const { return VMOp_GetFrameLocation; } |
|
586 |
jvmtiError result() { return _result; } |
|
48105
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|
587 |
void doit(); |
1 | 588 |
}; |
589 |
||
590 |
||
591 |
// ResourceTracker |
|
592 |
// |
|
593 |
// ResourceTracker works a little like a ResourceMark. All allocates |
|
594 |
// using the resource tracker are recorded. If an allocate using the |
|
595 |
// resource tracker fails the destructor will free any resources |
|
596 |
// that were allocated using the tracker. |
|
597 |
// The motive for this class is to avoid messy error recovery code |
|
598 |
// in situations where multiple allocations are done in sequence. If |
|
599 |
// the second or subsequent allocation fails it avoids any code to |
|
600 |
// release memory allocated in the previous calls. |
|
601 |
// |
|
602 |
// Usage :- |
|
603 |
// ResourceTracker rt(env); |
|
604 |
// : |
|
605 |
// err = rt.allocate(1024, &ptr); |
|
606 |
||
607 |
class ResourceTracker : public StackObj { |
|
608 |
private: |
|
609 |
JvmtiEnv* _env; |
|
610 |
GrowableArray<unsigned char*> *_allocations; |
|
611 |
bool _failed; |
|
612 |
public: |
|
613 |
ResourceTracker(JvmtiEnv* env); |
|
614 |
~ResourceTracker(); |
|
615 |
jvmtiError allocate(jlong size, unsigned char** mem_ptr); |
|
616 |
unsigned char* allocate(jlong size); |
|
617 |
char* strdup(const char* str); |
|
618 |
}; |
|
619 |
||
620 |
||
621 |
// Jvmti monitor closure to collect off stack monitors. |
|
622 |
class JvmtiMonitorClosure: public MonitorClosure { |
|
623 |
private: |
|
624 |
JavaThread *_java_thread; |
|
625 |
JavaThread *_calling_thread; |
|
626 |
GrowableArray<jvmtiMonitorStackDepthInfo*> *_owned_monitors_list; |
|
627 |
jvmtiError _error; |
|
628 |
JvmtiEnvBase *_env; |
|
629 |
||
630 |
public: |
|
631 |
JvmtiMonitorClosure(JavaThread* thread, JavaThread *calling_thread, |
|
632 |
GrowableArray<jvmtiMonitorStackDepthInfo*> *owned_monitors, |
|
633 |
JvmtiEnvBase *env) { |
|
634 |
_java_thread = thread; |
|
635 |
_calling_thread = calling_thread; |
|
636 |
_owned_monitors_list = owned_monitors; |
|
637 |
_error = JVMTI_ERROR_NONE; |
|
638 |
_env = env; |
|
639 |
} |
|
640 |
void do_monitor(ObjectMonitor* mon); |
|
641 |
jvmtiError error() { return _error;} |
|
642 |
}; |
|
643 |
||
36508 | 644 |
|
645 |
// Jvmti module closure to collect all modules loaded to the system. |
|
646 |
class JvmtiModuleClosure : public StackObj { |
|
647 |
private: |
|
46961
c9094b1e5f87
8186088: ConstantPoolCache::_resolved_references is not a JNIHandle
coleenp
parents:
46773
diff
changeset
|
648 |
static GrowableArray<OopHandle> *_tbl; // Protected with Module_lock |
36508 | 649 |
|
49816 | 650 |
static void do_module(ModuleEntry* entry); |
36508 | 651 |
public: |
652 |
jvmtiError get_all_modules(JvmtiEnv* env, jint* module_count_ptr, jobject** modules_ptr); |
|
653 |
}; |
|
654 |
||
53244
9807daeb47c4
8216167: Update include guards to reflect correct directories
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parents:
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changeset
|
655 |
#endif // SHARE_PRIMS_JVMTIENVBASE_HPP |