/js/src/jswatchpoint.h
http://github.com/zpao/v8monkey · C Header · 106 lines · 52 code · 16 blank · 38 comment · 3 complexity · bdf38caf230b7dd0c531c37e55199315 MD5 · raw file
- /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
- *
- * ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is an implementation of watchpoints for SpiderMonkey.
- *
- * The Initial Developer of the Original Code is
- * Mozilla Foundation.
- * Portions created by the Initial Developer are Copyright (C) 2011
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- * Jason Orendorff <jorendorff@mozilla.com>
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either the GNU General Public License Version 2 or later (the "GPL"), or
- * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
- #ifndef jswatchpoint_h___
- #define jswatchpoint_h___
- #include "jsalloc.h"
- #include "jsprvtd.h"
- #include "jsapi.h"
- #include "jsfriendapi.h"
- #include "gc/Barrier.h"
- #include "js/HashTable.h"
- namespace js {
- struct WatchKey {
- WatchKey() {}
- WatchKey(JSObject *obj, jsid id) : object(obj), id(id) {}
- WatchKey(const WatchKey &key) : object(key.object.get()), id(key.id.get()) {}
- HeapPtrObject object;
- HeapId id;
- };
- struct Watchpoint {
- JSWatchPointHandler handler;
- HeapPtrObject closure;
- bool held; /* true if currently running handler */
- };
- template <>
- struct DefaultHasher<WatchKey> {
- typedef WatchKey Lookup;
- static inline js::HashNumber hash(const Lookup &key);
- static bool match(const WatchKey &k, const Lookup &l) {
- return k.object == l.object && k.id.get() == l.id.get();
- }
- };
- class WatchpointMap {
- public:
- typedef HashMap<WatchKey, Watchpoint, DefaultHasher<WatchKey>, SystemAllocPolicy> Map;
- bool init();
- bool watch(JSContext *cx, JSObject *obj, jsid id,
- JSWatchPointHandler handler, JSObject *closure);
- void unwatch(JSObject *obj, jsid id,
- JSWatchPointHandler *handlerp, JSObject **closurep);
- void unwatchObject(JSObject *obj);
- void clear();
- bool triggerWatchpoint(JSContext *cx, JSObject *obj, jsid id, Value *vp);
- static bool markAllIteratively(JSTracer *trc);
- bool markIteratively(JSTracer *trc);
- void markAll(JSTracer *trc);
- static void sweepAll(JSRuntime *rt);
- void sweep();
- static void traceAll(WeakMapTracer *trc);
- void trace(WeakMapTracer *trc);
- private:
- Map map;
- };
- }
- #endif /* jswatchpoint_h___ */