The Tor Browser / file comparison
comparison: js/src/jswatchpoint.h
js/src/jswatchpoint.h
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:74ed0affec90 |
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| 1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- | |
| 2 * vim: set ts=8 sts=4 et sw=4 tw=99: | |
| 3 * This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 #ifndef jswatchpoint_h | |
| 8 #define jswatchpoint_h | |
| 9 | |
| 10 #include "jsalloc.h" | |
| 11 | |
| 12 #include "gc/Barrier.h" | |
| 13 #include "js/HashTable.h" | |
| 14 #include "js/OldDebugAPI.h" | |
| 15 | |
| 16 namespace js { | |
| 17 | |
| 18 struct WeakMapTracer; | |
| 19 | |
| 20 struct WatchKey { | |
| 21 WatchKey() {} | |
| 22 WatchKey(JSObject *obj, jsid id) : object(obj), id(id) {} | |
| 23 WatchKey(const WatchKey &key) : object(key.object.get()), id(key.id.get()) {} | |
| 24 EncapsulatedPtrObject object; | |
| 25 EncapsulatedId id; | |
| 26 | |
| 27 bool operator!=(const WatchKey &other) const { | |
| 28 return object != other.object || id != other.id; | |
| 29 } | |
| 30 }; | |
| 31 | |
| 32 struct Watchpoint { | |
| 33 JSWatchPointHandler handler; | |
| 34 EncapsulatedPtrObject closure; /* This is always marked in minor GCs and so doesn't require a postbarrier. */ | |
| 35 bool held; /* true if currently running handler */ | |
| 36 Watchpoint(JSWatchPointHandler handler, JSObject* closure, bool held) | |
| 37 : handler(handler), closure(closure), held(held) {} | |
| 38 }; | |
| 39 | |
| 40 template <> | |
| 41 struct DefaultHasher<WatchKey> | |
| 42 { | |
| 43 typedef WatchKey Lookup; | |
| 44 static inline js::HashNumber hash(const Lookup &key); | |
| 45 | |
| 46 static bool match(const WatchKey &k, const Lookup &l) { | |
| 47 return k.object == l.object && k.id.get() == l.id.get(); | |
| 48 } | |
| 49 | |
| 50 static void rekey(WatchKey &k, const WatchKey& newKey) { | |
| 51 k.object.unsafeSet(newKey.object); | |
| 52 k.id.unsafeSet(newKey.id); | |
| 53 } | |
| 54 }; | |
| 55 | |
| 56 class WatchpointMap { | |
| 57 public: | |
| 58 typedef HashMap<WatchKey, Watchpoint, DefaultHasher<WatchKey>, SystemAllocPolicy> Map; | |
| 59 | |
| 60 bool init(); | |
| 61 bool watch(JSContext *cx, HandleObject obj, HandleId id, | |
| 62 JSWatchPointHandler handler, HandleObject closure); | |
| 63 void unwatch(JSObject *obj, jsid id, | |
| 64 JSWatchPointHandler *handlerp, JSObject **closurep); | |
| 65 void unwatchObject(JSObject *obj); | |
| 66 void clear(); | |
| 67 | |
| 68 bool triggerWatchpoint(JSContext *cx, HandleObject obj, HandleId id, MutableHandleValue vp); | |
| 69 | |
| 70 static bool markCompartmentIteratively(JSCompartment *c, JSTracer *trc); | |
| 71 bool markIteratively(JSTracer *trc); | |
| 72 void markAll(JSTracer *trc); | |
| 73 static void sweepAll(JSRuntime *rt); | |
| 74 void sweep(); | |
| 75 | |
| 76 static void traceAll(WeakMapTracer *trc); | |
| 77 void trace(WeakMapTracer *trc); | |
| 78 | |
| 79 private: | |
| 80 Map map; | |
| 81 }; | |
| 82 | |
| 83 } | |
| 84 | |
| 85 #endif /* jswatchpoint_h */ |
