LCOV - app.info - js/src/jswatchpoint.h

LCOV - code coverage report
| Current view: | directory - js/src - jswatchpoint.h (source / functions) |  | Found | Hit | Coverage |
| Test: | app.info | Lines: | 8 | 8 | 100.0 %
| Date: | 2012-04-07 | Functions: | 11 | 11 | 100.0 %

           1                 : /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
           2                 :  *
           3                 :  * ***** BEGIN LICENSE BLOCK *****
           4                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
           5                 :  *
           6                 :  * The contents of this file are subject to the Mozilla Public License Version
           7                 :  * 1.1 (the "License"); you may not use this file except in compliance with
           8                 :  * the License. You may obtain a copy of the License at
           9                 :  * http://www.mozilla.org/MPL/
          10                 :  *
          11                 :  * Software distributed under the License is distributed on an "AS IS" basis,
          12                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
          13                 :  * for the specific language governing rights and limitations under the
          14                 :  * License.
          15                 :  *
          16                 :  * The Original Code is an implementation of watchpoints for SpiderMonkey.
          17                 :  *
          18                 :  * The Initial Developer of the Original Code is
          19                 :  * Mozilla Foundation.
          20                 :  * Portions created by the Initial Developer are Copyright (C) 2011
          21                 :  * the Initial Developer. All Rights Reserved.
          22                 :  *
          23                 :  * Contributor(s):
          24                 :  *   Jason Orendorff <jorendorff@mozilla.com>
          25                 :  *
          26                 :  * Alternatively, the contents of this file may be used under the terms of
          27                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
          28                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
          29                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
          30                 :  * of those above. If you wish to allow use of your version of this file only
          31                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
          32                 :  * use your version of this file under the terms of the MPL, indicate your
          33                 :  * decision by deleting the provisions above and replace them with the notice
          34                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
          35                 :  * the provisions above, a recipient may use your version of this file under
          36                 :  * the terms of any one of the MPL, the GPL or the LGPL.
          37                 :  *
          38                 :  * ***** END LICENSE BLOCK ***** */
          39                 :
          40                 : #ifndef jswatchpoint_h___
          41                 : #define jswatchpoint_h___
          42                 :
          43                 : #include "jsalloc.h"
          44                 : #include "jsprvtd.h"
          45                 : #include "jsapi.h"
          46                 : #include "jsfriendapi.h"
          47                 :
          48                 : #include "gc/Barrier.h"
          49                 : #include "js/HashTable.h"
          50                 :
          51                 : namespace js {
          52                 :
          53           54297 : struct WatchKey {
          54           25698 :     WatchKey() {}
          55            8120 :     WatchKey(JSObject *obj, jsid id) : object(obj), id(id) {}
          56            3825 :     WatchKey(const WatchKey &key) : object(key.object.get()), id(key.id.get()) {}
          57                 :     HeapPtrObject object;
          58                 :     HeapId id;
          59                 : };
          60                 :
          61           75862 : struct Watchpoint {
          62                 :     JSWatchPointHandler handler;
          63                 :     HeapPtrObject closure;
          64                 :     bool held;  /* true if currently running handler */
          65                 : };
          66                 :
          67                 : template <>
          68                 : struct DefaultHasher<WatchKey> {
          69                 :     typedef WatchKey Lookup;
          70                 :     static inline js::HashNumber hash(const Lookup &key);
          71                 :
          72            5838 :     static bool match(const WatchKey &k, const Lookup &l) {
          73            5838 :         return k.object == l.object && k.id.get() == l.id.get();
          74                 :     }
          75                 : };
          76                 :
          77             450 : class WatchpointMap {
          78                 :   public:
          79                 :     typedef HashMap<WatchKey, Watchpoint, DefaultHasher<WatchKey>, SystemAllocPolicy> Map;
          80                 :
          81                 :     bool init();
          82                 :     bool watch(JSContext *cx, JSObject *obj, jsid id,
          83                 :                JSWatchPointHandler handler, JSObject *closure);
          84                 :     void unwatch(JSObject *obj, jsid id,
          85                 :                  JSWatchPointHandler *handlerp, JSObject **closurep);
          86                 :     void unwatchObject(JSObject *obj);
          87                 :     void clear();
          88                 :
          89                 :     bool triggerWatchpoint(JSContext *cx, JSObject *obj, jsid id, Value *vp);
          90                 :
          91                 :     static bool markAllIteratively(JSTracer *trc);
          92                 :     bool markIteratively(JSTracer *trc);
          93                 :     void markAll(JSTracer *trc);
          94                 :     static void sweepAll(JSRuntime *rt);
          95                 :     void sweep();
          96                 :
          97                 :     static void traceAll(WeakMapTracer *trc);
          98                 :     void trace(WeakMapTracer *trc);
          99                 :
         100                 :   private:
         101                 :     Map map;
         102                 : };
         103                 :
         104                 : }
         105                 :
         106                 : #endif /* jswatchpoint_h___ */

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