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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: set ts=8 sts=2 et sw=2 tw=80:
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/* JS symbol tables. */
#include "vm/ShapeZone.h"
#include "gc/Marking-inl.h"
#include "vm/Shape-inl.h"
using namespace js;
using namespace js::gc;
void ShapeZone::fixupPropMapShapeTableAfterMovingGC() {
for (PropMapShapeSet::Enum e(propMapShapes); !e.empty(); e.popFront()) {
SharedShape* shape = MaybeForwarded(e.front().unbarrieredGet());
SharedPropMap* map = shape->propMapMaybeForwarded();
BaseShape* base = MaybeForwarded(shape->base());
PropMapShapeSet::Lookup lookup(base, shape->numFixedSlots(), map,
shape->propMapLength(),
shape->objectFlags());
e.rekeyFront(lookup, shape);
}
}
#ifdef JSGC_HASH_TABLE_CHECKS
void ShapeZone::checkTablesAfterMovingGC(JS::Zone* zone) {
CheckTableAfterMovingGC(initialPropMaps, [zone](const auto& entry) {
SharedPropMap* map = entry.unbarrieredGet();
CheckGCThingAfterMovingGC(map, zone);
PropertyKey key = map->getKey(0);
if (key.isGCThing()) {
CheckGCThingAfterMovingGC(key.toGCThing(), zone);
}
return InitialPropMapHasher::Lookup(key, map->getPropertyInfo(0));
});
CheckTableAfterMovingGC(baseShapes, [zone](const auto& entry) {
BaseShape* base = entry.unbarrieredGet();
CheckGCThingAfterMovingGC(base, zone);
CheckProtoAfterMovingGC(base->proto(), zone);
return BaseShapeHasher::Lookup(base->clasp(), base->realm(), base->proto());
});
CheckTableAfterMovingGC(initialShapes, [zone](const auto& entry) {
SharedShape* shape = entry.unbarrieredGet();
CheckGCThingAfterMovingGC(shape, zone);
CheckProtoAfterMovingGC(shape->proto(), zone);
return InitialShapeHasher::Lookup(shape->getObjectClass(), shape->realm(),
shape->proto(), shape->numFixedSlots(),
shape->objectFlags());
});
CheckTableAfterMovingGC(propMapShapes, [zone](const auto& entry) {
SharedShape* shape = entry.unbarrieredGet();
CheckGCThingAfterMovingGC(shape, zone);
CheckGCThingAfterMovingGC(shape->base(), zone);
CheckGCThingAfterMovingGC(shape->propMap(), zone);
return PropMapShapeHasher::Lookup(shape->base(), shape->numFixedSlots(),
shape->propMap(), shape->propMapLength(),
shape->objectFlags());
});
CheckTableAfterMovingGC(proxyShapes, [zone](const auto& entry) {
ProxyShape* shape = entry.unbarrieredGet();
CheckGCThingAfterMovingGC(shape, zone);
CheckProtoAfterMovingGC(shape->proto(), zone);
return ProxyShapeHasher::Lookup(shape->getObjectClass(), shape->realm(),
shape->proto(), shape->objectFlags());
});
CheckTableAfterMovingGC(wasmGCShapes, [zone](const auto& entry) {
WasmGCShape* shape = entry.unbarrieredGet();
CheckGCThingAfterMovingGC(shape, zone);
CheckProtoAfterMovingGC(shape->proto(), zone);
return WasmGCShapeHasher::Lookup(shape->getObjectClass(), shape->realm(),
shape->proto(), shape->recGroup(),
shape->objectFlags());
});
}
#endif // JSGC_HASH_TABLE_CHECKS
ShapeZone::ShapeZone(Zone* zone)
: baseShapes(zone),
initialPropMaps(zone),
initialShapes(zone),
propMapShapes(zone),
proxyShapes(zone),
wasmGCShapes(zone) {}
void ShapeZone::purgeShapeCaches(JS::GCContext* gcx) {
for (Shape* shape : shapesWithCache) {
MaybeForwarded(shape)->purgeCache(gcx);
}
shapesWithCache.clearAndFree();
}
void ShapeZone::addSizeOfExcludingThis(mozilla::MallocSizeOf mallocSizeOf,
size_t* initialPropMapTable,
size_t* shapeTables) {
*shapeTables += baseShapes.sizeOfExcludingThis(mallocSizeOf);
*initialPropMapTable += initialPropMaps.sizeOfExcludingThis(mallocSizeOf);
*shapeTables += initialShapes.sizeOfExcludingThis(mallocSizeOf);
*shapeTables += propMapShapes.sizeOfExcludingThis(mallocSizeOf);
*shapeTables += proxyShapes.sizeOfExcludingThis(mallocSizeOf);
*shapeTables += wasmGCShapes.sizeOfExcludingThis(mallocSizeOf);
*shapeTables += shapesWithCache.sizeOfExcludingThis(mallocSizeOf);
}
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