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annotate src/share/vm/prims/jvmtiEventController.hpp @ 11722:ff05c78a7f64
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author | Christian Wirth <christian.wirth@oracle.com> |
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date | Thu, 19 Sep 2013 10:36:56 +0200 |
parents | f95d63e2154a |
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rev | line source |
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0 | 1 /* |
1972 | 2 * Copyright (c) 2003, 2010, 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 * | |
1552
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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 | |
1972 | 25 #ifndef SHARE_VM_PRIMS_JVMTIEVENTCONTROLLER_HPP |
26 #define SHARE_VM_PRIMS_JVMTIEVENTCONTROLLER_HPP | |
27 | |
28 #include "jvmtifiles/jvmti.h" | |
29 #include "memory/allocation.hpp" | |
30 #include "memory/allocation.inline.hpp" | |
31 #include "utilities/globalDefinitions.hpp" | |
0 | 32 |
33 // forward declaration | |
34 class JvmtiEventControllerPrivate; | |
35 class JvmtiEventController; | |
36 class JvmtiEnvThreadState; | |
37 class JvmtiFramePop; | |
38 class JvmtiEnvBase; | |
39 | |
40 | |
41 // Extension event support | |
42 // | |
43 // jvmtiExtEvent is the extensions equivalent of jvmtiEvent | |
44 // jvmtiExtCallbacks is the extensions equivalent of jvmtiEventCallbacks | |
45 | |
46 // Extension events start JVMTI_MIN_EVENT_TYPE_VAL-1 and work towards 0. | |
47 typedef enum { | |
48 EXT_EVENT_CLASS_UNLOAD = JVMTI_MIN_EVENT_TYPE_VAL-1, | |
49 EXT_MIN_EVENT_TYPE_VAL = EXT_EVENT_CLASS_UNLOAD, | |
50 EXT_MAX_EVENT_TYPE_VAL = EXT_EVENT_CLASS_UNLOAD | |
51 } jvmtiExtEvent; | |
52 | |
53 typedef struct { | |
54 jvmtiExtensionEvent ClassUnload; | |
55 } jvmtiExtEventCallbacks; | |
56 | |
57 | |
58 // The complete range of events is EXT_MIN_EVENT_TYPE_VAL to | |
59 // JVMTI_MAX_EVENT_TYPE_VAL (inclusive and contiguous). | |
60 const int TOTAL_MIN_EVENT_TYPE_VAL = EXT_MIN_EVENT_TYPE_VAL; | |
61 const int TOTAL_MAX_EVENT_TYPE_VAL = JVMTI_MAX_EVENT_TYPE_VAL; | |
62 | |
63 | |
64 /////////////////////////////////////////////////////////////// | |
65 // | |
66 // JvmtiEventEnabled | |
67 // | |
68 // Utility class | |
69 // | |
70 // A boolean array indexed by event_type, used as an internal | |
71 // data structure to track what JVMTI event types are enabled. | |
72 // Used for user set enabling and disabling (globally and on a | |
73 // per thread basis), and for computed merges across environments, | |
74 // threads and the VM as a whole. | |
75 // | |
76 // for inlines see jvmtiEventController_inline.hpp | |
77 // | |
78 | |
79 class JvmtiEventEnabled VALUE_OBJ_CLASS_SPEC { | |
80 private: | |
81 friend class JvmtiEventControllerPrivate; | |
82 jlong _enabled_bits; | |
83 #ifndef PRODUCT | |
84 enum { | |
85 JEE_INIT_GUARD = 0xEAD0 | |
86 } _init_guard; | |
87 #endif | |
88 static jlong bit_for(jvmtiEvent event_type); | |
89 jlong get_bits(); | |
90 void set_bits(jlong bits); | |
91 public: | |
92 JvmtiEventEnabled(); | |
93 void clear(); | |
94 bool is_enabled(jvmtiEvent event_type); | |
95 void set_enabled(jvmtiEvent event_type, bool enabled); | |
96 }; | |
97 | |
98 | |
99 /////////////////////////////////////////////////////////////// | |
100 // | |
101 // JvmtiEnvThreadEventEnable | |
102 // | |
103 // JvmtiEventController data specific to a particular environment and thread. | |
104 // | |
105 // for inlines see jvmtiEventController_inline.hpp | |
106 // | |
107 | |
108 class JvmtiEnvThreadEventEnable VALUE_OBJ_CLASS_SPEC { | |
109 private: | |
110 friend class JvmtiEventControllerPrivate; | |
111 JvmtiEventEnabled _event_user_enabled; | |
112 JvmtiEventEnabled _event_enabled; | |
113 | |
114 public: | |
115 JvmtiEnvThreadEventEnable(); | |
116 ~JvmtiEnvThreadEventEnable(); | |
117 bool is_enabled(jvmtiEvent event_type); | |
118 void set_user_enabled(jvmtiEvent event_type, bool enabled); | |
119 }; | |
120 | |
121 | |
122 /////////////////////////////////////////////////////////////// | |
123 // | |
124 // JvmtiThreadEventEnable | |
125 // | |
126 // JvmtiEventController data specific to a particular thread. | |
127 // | |
128 // for inlines see jvmtiEventController_inline.hpp | |
129 // | |
130 | |
131 class JvmtiThreadEventEnable VALUE_OBJ_CLASS_SPEC { | |
132 private: | |
133 friend class JvmtiEventControllerPrivate; | |
134 JvmtiEventEnabled _event_enabled; | |
135 | |
136 public: | |
137 JvmtiThreadEventEnable(); | |
138 ~JvmtiThreadEventEnable(); | |
139 bool is_enabled(jvmtiEvent event_type); | |
140 }; | |
141 | |
142 | |
143 /////////////////////////////////////////////////////////////// | |
144 // | |
145 // JvmtiEnvEventEnable | |
146 // | |
147 // JvmtiEventController data specific to a particular environment. | |
148 // | |
149 // for inlines see jvmtiEventController_inline.hpp | |
150 // | |
151 | |
152 class JvmtiEnvEventEnable VALUE_OBJ_CLASS_SPEC { | |
153 private: | |
154 friend class JvmtiEventControllerPrivate; | |
155 | |
156 // user set global event enablement indexed by jvmtiEvent | |
157 JvmtiEventEnabled _event_user_enabled; | |
158 | |
159 // this flag indicates the presence (true) or absence (false) of event callbacks | |
160 // it is indexed by jvmtiEvent | |
161 JvmtiEventEnabled _event_callback_enabled; | |
162 | |
163 // indexed by jvmtiEvent true if enabled globally or on any thread. | |
164 // True only if there is a callback for it. | |
165 JvmtiEventEnabled _event_enabled; | |
166 | |
167 public: | |
168 JvmtiEnvEventEnable(); | |
169 ~JvmtiEnvEventEnable(); | |
170 bool is_enabled(jvmtiEvent event_type); | |
171 void set_user_enabled(jvmtiEvent event_type, bool enabled); | |
172 }; | |
173 | |
174 | |
175 /////////////////////////////////////////////////////////////// | |
176 // | |
177 // JvmtiEventController | |
178 // | |
179 // The class is the access point for all actions that change | |
180 // which events are active, this include: | |
181 // enabling and disabling events | |
182 // changing the callbacks/eventhook (they may be null) | |
183 // setting and clearing field watchpoints | |
184 // setting frame pops | |
185 // encountering frame pops | |
186 // | |
187 // for inlines see jvmtiEventController_inline.hpp | |
188 // | |
189 | |
190 class JvmtiEventController : AllStatic { | |
191 private: | |
192 friend class JvmtiEventControllerPrivate; | |
193 | |
194 // for all environments, global array indexed by jvmtiEvent | |
195 static JvmtiEventEnabled _universal_global_event_enabled; | |
196 | |
197 public: | |
198 static bool is_enabled(jvmtiEvent event_type); | |
199 | |
200 // events that can ONLY be enabled/disabled globally (can't toggle on individual threads). | |
201 static bool is_global_event(jvmtiEvent event_type); | |
202 | |
203 // is the event_type valid? | |
204 // to do: check against valid event array | |
205 static bool is_valid_event_type(jvmtiEvent event_type) { | |
206 return ((int)event_type >= TOTAL_MIN_EVENT_TYPE_VAL) | |
207 && ((int)event_type <= TOTAL_MAX_EVENT_TYPE_VAL); | |
208 } | |
209 | |
210 // Use (thread == NULL) to enable/disable an event globally. | |
211 // Use (thread != NULL) to enable/disable an event for a particular thread. | |
212 // thread is ignored for events that can only be specified globally | |
213 static void set_user_enabled(JvmtiEnvBase *env, JavaThread *thread, | |
214 jvmtiEvent event_type, bool enabled); | |
215 | |
216 // Setting callbacks changes computed enablement and must be done | |
217 // at a safepoint otherwise a NULL callback could be attempted | |
218 static void set_event_callbacks(JvmtiEnvBase *env, | |
219 const jvmtiEventCallbacks* callbacks, | |
220 jint size_of_callbacks); | |
221 | |
222 // Sets the callback function for a single extension event and enables | |
223 // (or disables it). | |
224 static void set_extension_event_callback(JvmtiEnvBase* env, | |
225 jint extension_event_index, | |
226 jvmtiExtensionEvent callback); | |
227 | |
228 static void set_frame_pop(JvmtiEnvThreadState *env_thread, JvmtiFramePop fpop); | |
229 static void clear_frame_pop(JvmtiEnvThreadState *env_thread, JvmtiFramePop fpop); | |
230 static void clear_to_frame_pop(JvmtiEnvThreadState *env_thread, JvmtiFramePop fpop); | |
231 | |
232 static void change_field_watch(jvmtiEvent event_type, bool added); | |
233 | |
234 static void thread_started(JavaThread *thread); | |
235 static void thread_ended(JavaThread *thread); | |
236 | |
237 static void env_initialize(JvmtiEnvBase *env); | |
238 static void env_dispose(JvmtiEnvBase *env); | |
239 | |
240 static void vm_start(); | |
241 static void vm_init(); | |
242 static void vm_death(); | |
243 }; | |
244 | |
1972 | 245 #endif // SHARE_VM_PRIMS_JVMTIEVENTCONTROLLER_HPP |