Mercurial > hg > truffle
view src/share/vm/prims/jvmtiEventController.hpp @ 4290:21400bafb3ff
Enforce that one fixed register cannot be a temporary operand multiple times with different kinds
author | Christian Wimmer <Christian.Wimmer@Oracle.com> |
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date | Tue, 17 Jan 2012 19:35:29 -0800 |
parents | f95d63e2154a |
children |
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/* * 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