1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/js/src/gc/Barrier.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,66 @@
1.4 +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
1.5 + * vim: set ts=8 sts=4 et sw=4 tw=99:
1.6 + * This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.8 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +
1.10 +#include "gc/Barrier.h"
1.11 +
1.12 +#include "jscompartment.h"
1.13 +#include "jsobj.h"
1.14 +
1.15 +#include "gc/Zone.h"
1.16 +
1.17 +namespace js {
1.18 +
1.19 +#ifdef DEBUG
1.20 +
1.21 +bool
1.22 +HeapValue::preconditionForSet(Zone *zone)
1.23 +{
1.24 + if (!value.isMarkable())
1.25 + return true;
1.26 +
1.27 + return ZoneOfValue(value) == zone ||
1.28 + zone->runtimeFromAnyThread()->isAtomsZone(ZoneOfValue(value));
1.29 +}
1.30 +
1.31 +bool
1.32 +HeapSlot::preconditionForSet(JSObject *owner, Kind kind, uint32_t slot)
1.33 +{
1.34 + return kind == Slot
1.35 + ? &owner->getSlotRef(slot) == this
1.36 + : &owner->getDenseElement(slot) == (const Value *)this;
1.37 +}
1.38 +
1.39 +bool
1.40 +HeapSlot::preconditionForSet(Zone *zone, JSObject *owner, Kind kind, uint32_t slot)
1.41 +{
1.42 + bool ok = kind == Slot
1.43 + ? &owner->getSlotRef(slot) == this
1.44 + : &owner->getDenseElement(slot) == (const Value *)this;
1.45 + return ok && owner->zone() == zone;
1.46 +}
1.47 +
1.48 +void
1.49 +HeapSlot::preconditionForWriteBarrierPost(JSObject *obj, Kind kind, uint32_t slot, Value target)
1.50 +{
1.51 + JS_ASSERT_IF(kind == Slot, obj->getSlotAddressUnchecked(slot)->get() == target);
1.52 + JS_ASSERT_IF(kind == Element,
1.53 + static_cast<HeapSlot *>(obj->getDenseElements() + slot)->get() == target);
1.54 +}
1.55 +
1.56 +bool
1.57 +RuntimeFromMainThreadIsHeapMajorCollecting(JS::shadow::Zone *shadowZone)
1.58 +{
1.59 + return shadowZone->runtimeFromMainThread()->isHeapMajorCollecting();
1.60 +}
1.61 +#endif // DEBUG
1.62 +
1.63 +bool
1.64 +StringIsPermanentAtom(JSString *str)
1.65 +{
1.66 + return str->isPermanentAtom();
1.67 +}
1.68 +
1.69 +} // namespace js
