| /* |
| * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #ifndef SHARE_VM_PRIMS_JVMTIEVENTCONTROLLER_HPP |
| #define SHARE_VM_PRIMS_JVMTIEVENTCONTROLLER_HPP |
| |
| #include "jvmtifiles/jvmti.h" |
| #include "memory/allocation.hpp" |
| #include "memory/allocation.inline.hpp" |
| #include "utilities/globalDefinitions.hpp" |
| |
| // forward declaration |
| class JvmtiEventControllerPrivate; |
| class JvmtiEventController; |
| class JvmtiEnvThreadState; |
| class JvmtiFramePop; |
| class JvmtiEnvBase; |
| |
| |
| // Extension event support |
| // |
| // jvmtiExtEvent is the extensions equivalent of jvmtiEvent |
| // jvmtiExtCallbacks is the extensions equivalent of jvmtiEventCallbacks |
| |
| // Extension events start JVMTI_MIN_EVENT_TYPE_VAL-1 and work towards 0. |
| typedef enum { |
| EXT_EVENT_CLASS_UNLOAD = JVMTI_MIN_EVENT_TYPE_VAL-1, |
| EXT_MIN_EVENT_TYPE_VAL = EXT_EVENT_CLASS_UNLOAD, |
| EXT_MAX_EVENT_TYPE_VAL = EXT_EVENT_CLASS_UNLOAD |
| } jvmtiExtEvent; |
| |
| typedef struct { |
| jvmtiExtensionEvent ClassUnload; |
| } jvmtiExtEventCallbacks; |
| |
| |
| // The complete range of events is EXT_MIN_EVENT_TYPE_VAL to |
| // JVMTI_MAX_EVENT_TYPE_VAL (inclusive and contiguous). |
| const int TOTAL_MIN_EVENT_TYPE_VAL = EXT_MIN_EVENT_TYPE_VAL; |
| const int TOTAL_MAX_EVENT_TYPE_VAL = JVMTI_MAX_EVENT_TYPE_VAL; |
| |
| |
| /////////////////////////////////////////////////////////////// |
| // |
| // JvmtiEventEnabled |
| // |
| // Utility class |
| // |
| // A boolean array indexed by event_type, used as an internal |
| // data structure to track what JVMTI event types are enabled. |
| // Used for user set enabling and disabling (globally and on a |
| // per thread basis), and for computed merges across environments, |
| // threads and the VM as a whole. |
| // |
| // for inlines see jvmtiEventController_inline.hpp |
| // |
| |
| class JvmtiEventEnabled VALUE_OBJ_CLASS_SPEC { |
| private: |
| friend class JvmtiEventControllerPrivate; |
| jlong _enabled_bits; |
| #ifndef PRODUCT |
| enum { |
| JEE_INIT_GUARD = 0xEAD0 |
| } _init_guard; |
| #endif |
| static jlong bit_for(jvmtiEvent event_type); |
| jlong get_bits(); |
| void set_bits(jlong bits); |
| public: |
| JvmtiEventEnabled(); |
| void clear(); |
| bool is_enabled(jvmtiEvent event_type); |
| void set_enabled(jvmtiEvent event_type, bool enabled); |
| }; |
| |
| |
| /////////////////////////////////////////////////////////////// |
| // |
| // JvmtiEnvThreadEventEnable |
| // |
| // JvmtiEventController data specific to a particular environment and thread. |
| // |
| // for inlines see jvmtiEventController_inline.hpp |
| // |
| |
| class JvmtiEnvThreadEventEnable VALUE_OBJ_CLASS_SPEC { |
| private: |
| friend class JvmtiEventControllerPrivate; |
| JvmtiEventEnabled _event_user_enabled; |
| JvmtiEventEnabled _event_enabled; |
| |
| public: |
| JvmtiEnvThreadEventEnable(); |
| ~JvmtiEnvThreadEventEnable(); |
| bool is_enabled(jvmtiEvent event_type); |
| void set_user_enabled(jvmtiEvent event_type, bool enabled); |
| }; |
| |
| |
| /////////////////////////////////////////////////////////////// |
| // |
| // JvmtiThreadEventEnable |
| // |
| // JvmtiEventController data specific to a particular thread. |
| // |
| // for inlines see jvmtiEventController_inline.hpp |
| // |
| |
| class JvmtiThreadEventEnable VALUE_OBJ_CLASS_SPEC { |
| private: |
| friend class JvmtiEventControllerPrivate; |
| JvmtiEventEnabled _event_enabled; |
| |
| public: |
| JvmtiThreadEventEnable(); |
| ~JvmtiThreadEventEnable(); |
| bool is_enabled(jvmtiEvent event_type); |
| }; |
| |
| |
| /////////////////////////////////////////////////////////////// |
| // |
| // JvmtiEnvEventEnable |
| // |
| // JvmtiEventController data specific to a particular environment. |
| // |
| // for inlines see jvmtiEventController_inline.hpp |
| // |
| |
| class JvmtiEnvEventEnable VALUE_OBJ_CLASS_SPEC { |
| private: |
| friend class JvmtiEventControllerPrivate; |
| |
| // user set global event enablement indexed by jvmtiEvent |
| JvmtiEventEnabled _event_user_enabled; |
| |
| // this flag indicates the presence (true) or absence (false) of event callbacks |
| // it is indexed by jvmtiEvent |
| JvmtiEventEnabled _event_callback_enabled; |
| |
| // indexed by jvmtiEvent true if enabled globally or on any thread. |
| // True only if there is a callback for it. |
| JvmtiEventEnabled _event_enabled; |
| |
| public: |
| JvmtiEnvEventEnable(); |
| ~JvmtiEnvEventEnable(); |
| bool is_enabled(jvmtiEvent event_type); |
| void set_user_enabled(jvmtiEvent event_type, bool enabled); |
| }; |
| |
| |
| /////////////////////////////////////////////////////////////// |
| // |
| // JvmtiEventController |
| // |
| // The class is the access point for all actions that change |
| // which events are active, this include: |
| // enabling and disabling events |
| // changing the callbacks/eventhook (they may be null) |
| // setting and clearing field watchpoints |
| // setting frame pops |
| // encountering frame pops |
| // |
| // for inlines see jvmtiEventController_inline.hpp |
| // |
| |
| class JvmtiEventController : AllStatic { |
| private: |
| friend class JvmtiEventControllerPrivate; |
| |
| // for all environments, global array indexed by jvmtiEvent |
| static JvmtiEventEnabled _universal_global_event_enabled; |
| |
| public: |
| static bool is_enabled(jvmtiEvent event_type); |
| |
| // events that can ONLY be enabled/disabled globally (can't toggle on individual threads). |
| static bool is_global_event(jvmtiEvent event_type); |
| |
| // is the event_type valid? |
| // to do: check against valid event array |
| static bool is_valid_event_type(jvmtiEvent event_type) { |
| return ((int)event_type >= TOTAL_MIN_EVENT_TYPE_VAL) |
| && ((int)event_type <= TOTAL_MAX_EVENT_TYPE_VAL); |
| } |
| |
| // Use (thread == NULL) to enable/disable an event globally. |
| // Use (thread != NULL) to enable/disable an event for a particular thread. |
| // thread is ignored for events that can only be specified globally |
| static void set_user_enabled(JvmtiEnvBase *env, JavaThread *thread, |
| jvmtiEvent event_type, bool enabled); |
| |
| // Setting callbacks changes computed enablement and must be done |
| // at a safepoint otherwise a NULL callback could be attempted |
| static void set_event_callbacks(JvmtiEnvBase *env, |
| const jvmtiEventCallbacks* callbacks, |
| jint size_of_callbacks); |
| |
| // Sets the callback function for a single extension event and enables |
| // (or disables it). |
| static void set_extension_event_callback(JvmtiEnvBase* env, |
| jint extension_event_index, |
| jvmtiExtensionEvent callback); |
| |
| static void set_frame_pop(JvmtiEnvThreadState *env_thread, JvmtiFramePop fpop); |
| static void clear_frame_pop(JvmtiEnvThreadState *env_thread, JvmtiFramePop fpop); |
| static void clear_to_frame_pop(JvmtiEnvThreadState *env_thread, JvmtiFramePop fpop); |
| |
| static void change_field_watch(jvmtiEvent event_type, bool added); |
| |
| static void thread_started(JavaThread *thread); |
| static void thread_ended(JavaThread *thread); |
| |
| static void env_initialize(JvmtiEnvBase *env); |
| static void env_dispose(JvmtiEnvBase *env); |
| |
| static void vm_start(); |
| static void vm_init(); |
| static void vm_death(); |
| }; |
| |
| #endif // SHARE_VM_PRIMS_JVMTIEVENTCONTROLLER_HPP |