michael@0: /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
michael@0:  * vim: set ts=8 sts=4 et sw=4 tw=99:
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "gc/Barrier.h"
michael@0: 
michael@0: #include "jscompartment.h"
michael@0: #include "jsobj.h"
michael@0: 
michael@0: #include "gc/Zone.h"
michael@0: 
michael@0: namespace js {
michael@0: 
michael@0: #ifdef DEBUG
michael@0: 
michael@0: bool
michael@0: HeapValue::preconditionForSet(Zone *zone)
michael@0: {
michael@0:     if (!value.isMarkable())
michael@0:         return true;
michael@0: 
michael@0:     return ZoneOfValue(value) == zone ||
michael@0:            zone->runtimeFromAnyThread()->isAtomsZone(ZoneOfValue(value));
michael@0: }
michael@0: 
michael@0: bool
michael@0: HeapSlot::preconditionForSet(JSObject *owner, Kind kind, uint32_t slot)
michael@0: {
michael@0:     return kind == Slot
michael@0:          ? &owner->getSlotRef(slot) == this
michael@0:          : &owner->getDenseElement(slot) == (const Value *)this;
michael@0: }
michael@0: 
michael@0: bool
michael@0: HeapSlot::preconditionForSet(Zone *zone, JSObject *owner, Kind kind, uint32_t slot)
michael@0: {
michael@0:     bool ok = kind == Slot
michael@0:             ? &owner->getSlotRef(slot) == this
michael@0:             : &owner->getDenseElement(slot) == (const Value *)this;
michael@0:     return ok && owner->zone() == zone;
michael@0: }
michael@0: 
michael@0: void
michael@0: HeapSlot::preconditionForWriteBarrierPost(JSObject *obj, Kind kind, uint32_t slot, Value target)
michael@0: {
michael@0:     JS_ASSERT_IF(kind == Slot, obj->getSlotAddressUnchecked(slot)->get() == target);
michael@0:     JS_ASSERT_IF(kind == Element,
michael@0:                  static_cast<HeapSlot *>(obj->getDenseElements() + slot)->get() == target);
michael@0: }
michael@0: 
michael@0: bool
michael@0: RuntimeFromMainThreadIsHeapMajorCollecting(JS::shadow::Zone *shadowZone)
michael@0: {
michael@0:     return shadowZone->runtimeFromMainThread()->isHeapMajorCollecting();
michael@0: }
michael@0: #endif // DEBUG
michael@0: 
michael@0: bool
michael@0: StringIsPermanentAtom(JSString *str)
michael@0: {
michael@0:     return str->isPermanentAtom();
michael@0: }
michael@0: 
michael@0: } // namespace js