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annotate src/share/vm/prims/jvmtiEventController.hpp @ 1552:c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair
| author | trims |
|---|---|
| date | Thu, 27 May 2010 19:08:38 -0700 |
| parents | a61af66fc99e |
| children | f95d63e2154a |
| rev | line source |
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| 0 | 1 /* |
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6941466: Oracle rebranding changes for Hotspot repositories
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2 * Copyright (c) 2003, 2004, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 #ifndef _JAVA_JVMTI_EVENT_CONTROLLER_H_ | |
| 26 #define _JAVA_JVMTI_EVENT_CONTROLLER_H_ | |
| 27 | |
| 28 // forward declaration | |
| 29 class JvmtiEventControllerPrivate; | |
| 30 class JvmtiEventController; | |
| 31 class JvmtiEnvThreadState; | |
| 32 class JvmtiFramePop; | |
| 33 class JvmtiEnvBase; | |
| 34 | |
| 35 | |
| 36 // Extension event support | |
| 37 // | |
| 38 // jvmtiExtEvent is the extensions equivalent of jvmtiEvent | |
| 39 // jvmtiExtCallbacks is the extensions equivalent of jvmtiEventCallbacks | |
| 40 | |
| 41 // Extension events start JVMTI_MIN_EVENT_TYPE_VAL-1 and work towards 0. | |
| 42 typedef enum { | |
| 43 EXT_EVENT_CLASS_UNLOAD = JVMTI_MIN_EVENT_TYPE_VAL-1, | |
| 44 EXT_MIN_EVENT_TYPE_VAL = EXT_EVENT_CLASS_UNLOAD, | |
| 45 EXT_MAX_EVENT_TYPE_VAL = EXT_EVENT_CLASS_UNLOAD | |
| 46 } jvmtiExtEvent; | |
| 47 | |
| 48 typedef struct { | |
| 49 jvmtiExtensionEvent ClassUnload; | |
| 50 } jvmtiExtEventCallbacks; | |
| 51 | |
| 52 | |
| 53 // The complete range of events is EXT_MIN_EVENT_TYPE_VAL to | |
| 54 // JVMTI_MAX_EVENT_TYPE_VAL (inclusive and contiguous). | |
| 55 const int TOTAL_MIN_EVENT_TYPE_VAL = EXT_MIN_EVENT_TYPE_VAL; | |
| 56 const int TOTAL_MAX_EVENT_TYPE_VAL = JVMTI_MAX_EVENT_TYPE_VAL; | |
| 57 | |
| 58 | |
| 59 /////////////////////////////////////////////////////////////// | |
| 60 // | |
| 61 // JvmtiEventEnabled | |
| 62 // | |
| 63 // Utility class | |
| 64 // | |
| 65 // A boolean array indexed by event_type, used as an internal | |
| 66 // data structure to track what JVMTI event types are enabled. | |
| 67 // Used for user set enabling and disabling (globally and on a | |
| 68 // per thread basis), and for computed merges across environments, | |
| 69 // threads and the VM as a whole. | |
| 70 // | |
| 71 // for inlines see jvmtiEventController_inline.hpp | |
| 72 // | |
| 73 | |
| 74 class JvmtiEventEnabled VALUE_OBJ_CLASS_SPEC { | |
| 75 private: | |
| 76 friend class JvmtiEventControllerPrivate; | |
| 77 jlong _enabled_bits; | |
| 78 #ifndef PRODUCT | |
| 79 enum { | |
| 80 JEE_INIT_GUARD = 0xEAD0 | |
| 81 } _init_guard; | |
| 82 #endif | |
| 83 static jlong bit_for(jvmtiEvent event_type); | |
| 84 jlong get_bits(); | |
| 85 void set_bits(jlong bits); | |
| 86 public: | |
| 87 JvmtiEventEnabled(); | |
| 88 void clear(); | |
| 89 bool is_enabled(jvmtiEvent event_type); | |
| 90 void set_enabled(jvmtiEvent event_type, bool enabled); | |
| 91 }; | |
| 92 | |
| 93 | |
| 94 /////////////////////////////////////////////////////////////// | |
| 95 // | |
| 96 // JvmtiEnvThreadEventEnable | |
| 97 // | |
| 98 // JvmtiEventController data specific to a particular environment and thread. | |
| 99 // | |
| 100 // for inlines see jvmtiEventController_inline.hpp | |
| 101 // | |
| 102 | |
| 103 class JvmtiEnvThreadEventEnable VALUE_OBJ_CLASS_SPEC { | |
| 104 private: | |
| 105 friend class JvmtiEventControllerPrivate; | |
| 106 JvmtiEventEnabled _event_user_enabled; | |
| 107 JvmtiEventEnabled _event_enabled; | |
| 108 | |
| 109 public: | |
| 110 JvmtiEnvThreadEventEnable(); | |
| 111 ~JvmtiEnvThreadEventEnable(); | |
| 112 bool is_enabled(jvmtiEvent event_type); | |
| 113 void set_user_enabled(jvmtiEvent event_type, bool enabled); | |
| 114 }; | |
| 115 | |
| 116 | |
| 117 /////////////////////////////////////////////////////////////// | |
| 118 // | |
| 119 // JvmtiThreadEventEnable | |
| 120 // | |
| 121 // JvmtiEventController data specific to a particular thread. | |
| 122 // | |
| 123 // for inlines see jvmtiEventController_inline.hpp | |
| 124 // | |
| 125 | |
| 126 class JvmtiThreadEventEnable VALUE_OBJ_CLASS_SPEC { | |
| 127 private: | |
| 128 friend class JvmtiEventControllerPrivate; | |
| 129 JvmtiEventEnabled _event_enabled; | |
| 130 | |
| 131 public: | |
| 132 JvmtiThreadEventEnable(); | |
| 133 ~JvmtiThreadEventEnable(); | |
| 134 bool is_enabled(jvmtiEvent event_type); | |
| 135 }; | |
| 136 | |
| 137 | |
| 138 /////////////////////////////////////////////////////////////// | |
| 139 // | |
| 140 // JvmtiEnvEventEnable | |
| 141 // | |
| 142 // JvmtiEventController data specific to a particular environment. | |
| 143 // | |
| 144 // for inlines see jvmtiEventController_inline.hpp | |
| 145 // | |
| 146 | |
| 147 class JvmtiEnvEventEnable VALUE_OBJ_CLASS_SPEC { | |
| 148 private: | |
| 149 friend class JvmtiEventControllerPrivate; | |
| 150 | |
| 151 // user set global event enablement indexed by jvmtiEvent | |
| 152 JvmtiEventEnabled _event_user_enabled; | |
| 153 | |
| 154 // this flag indicates the presence (true) or absence (false) of event callbacks | |
| 155 // it is indexed by jvmtiEvent | |
| 156 JvmtiEventEnabled _event_callback_enabled; | |
| 157 | |
| 158 // indexed by jvmtiEvent true if enabled globally or on any thread. | |
| 159 // True only if there is a callback for it. | |
| 160 JvmtiEventEnabled _event_enabled; | |
| 161 | |
| 162 public: | |
| 163 JvmtiEnvEventEnable(); | |
| 164 ~JvmtiEnvEventEnable(); | |
| 165 bool is_enabled(jvmtiEvent event_type); | |
| 166 void set_user_enabled(jvmtiEvent event_type, bool enabled); | |
| 167 }; | |
| 168 | |
| 169 | |
| 170 /////////////////////////////////////////////////////////////// | |
| 171 // | |
| 172 // JvmtiEventController | |
| 173 // | |
| 174 // The class is the access point for all actions that change | |
| 175 // which events are active, this include: | |
| 176 // enabling and disabling events | |
| 177 // changing the callbacks/eventhook (they may be null) | |
| 178 // setting and clearing field watchpoints | |
| 179 // setting frame pops | |
| 180 // encountering frame pops | |
| 181 // | |
| 182 // for inlines see jvmtiEventController_inline.hpp | |
| 183 // | |
| 184 | |
| 185 class JvmtiEventController : AllStatic { | |
| 186 private: | |
| 187 friend class JvmtiEventControllerPrivate; | |
| 188 | |
| 189 // for all environments, global array indexed by jvmtiEvent | |
| 190 static JvmtiEventEnabled _universal_global_event_enabled; | |
| 191 | |
| 192 public: | |
| 193 static bool is_enabled(jvmtiEvent event_type); | |
| 194 | |
| 195 // events that can ONLY be enabled/disabled globally (can't toggle on individual threads). | |
| 196 static bool is_global_event(jvmtiEvent event_type); | |
| 197 | |
| 198 // is the event_type valid? | |
| 199 // to do: check against valid event array | |
| 200 static bool is_valid_event_type(jvmtiEvent event_type) { | |
| 201 return ((int)event_type >= TOTAL_MIN_EVENT_TYPE_VAL) | |
| 202 && ((int)event_type <= TOTAL_MAX_EVENT_TYPE_VAL); | |
| 203 } | |
| 204 | |
| 205 // Use (thread == NULL) to enable/disable an event globally. | |
| 206 // Use (thread != NULL) to enable/disable an event for a particular thread. | |
| 207 // thread is ignored for events that can only be specified globally | |
| 208 static void set_user_enabled(JvmtiEnvBase *env, JavaThread *thread, | |
| 209 jvmtiEvent event_type, bool enabled); | |
| 210 | |
| 211 // Setting callbacks changes computed enablement and must be done | |
| 212 // at a safepoint otherwise a NULL callback could be attempted | |
| 213 static void set_event_callbacks(JvmtiEnvBase *env, | |
| 214 const jvmtiEventCallbacks* callbacks, | |
| 215 jint size_of_callbacks); | |
| 216 | |
| 217 // Sets the callback function for a single extension event and enables | |
| 218 // (or disables it). | |
| 219 static void set_extension_event_callback(JvmtiEnvBase* env, | |
| 220 jint extension_event_index, | |
| 221 jvmtiExtensionEvent callback); | |
| 222 | |
| 223 static void set_frame_pop(JvmtiEnvThreadState *env_thread, JvmtiFramePop fpop); | |
| 224 static void clear_frame_pop(JvmtiEnvThreadState *env_thread, JvmtiFramePop fpop); | |
| 225 static void clear_to_frame_pop(JvmtiEnvThreadState *env_thread, JvmtiFramePop fpop); | |
| 226 | |
| 227 static void change_field_watch(jvmtiEvent event_type, bool added); | |
| 228 | |
| 229 static void thread_started(JavaThread *thread); | |
| 230 static void thread_ended(JavaThread *thread); | |
| 231 | |
| 232 static void env_initialize(JvmtiEnvBase *env); | |
| 233 static void env_dispose(JvmtiEnvBase *env); | |
| 234 | |
| 235 static void vm_start(); | |
| 236 static void vm_init(); | |
| 237 static void vm_death(); | |
| 238 }; | |
| 239 | |
| 240 #endif /* _JAVA_JVMTI_EVENT_CONTROLLER_H_ */ |