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// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_HEAP_REMEMBERED_SET_INL_H_
#define V8_HEAP_REMEMBERED_SET_INL_H_
#include "src/common/ptr-compr-inl.h"
#include "src/heap/remembered-set.h"
namespace v8 {
namespace internal {
template <typename Callback>
SlotCallbackResult UpdateTypedSlotHelper::UpdateTypedSlot(Heap* heap,
SlotType slot_type,
Address addr,
Callback callback) {
switch (slot_type) {
case CODE_TARGET_SLOT: {
RelocInfo rinfo(addr, RelocInfo::CODE_TARGET, 0, Code());
return UpdateCodeTarget(&rinfo, callback);
}
case CODE_ENTRY_SLOT: {
return UpdateCodeEntry(addr, callback);
}
case COMPRESSED_EMBEDDED_OBJECT_SLOT: {
RelocInfo rinfo(addr, RelocInfo::COMPRESSED_EMBEDDED_OBJECT, 0, Code());
return UpdateEmbeddedPointer(heap, &rinfo, callback);
}
case FULL_EMBEDDED_OBJECT_SLOT: {
RelocInfo rinfo(addr, RelocInfo::FULL_EMBEDDED_OBJECT, 0, Code());
return UpdateEmbeddedPointer(heap, &rinfo, callback);
}
case DATA_EMBEDDED_OBJECT_SLOT: {
RelocInfo rinfo(addr, RelocInfo::DATA_EMBEDDED_OBJECT, 0, Code());
return UpdateEmbeddedPointer(heap, &rinfo, callback);
}
case COMPRESSED_OBJECT_SLOT: {
HeapObject old_target = HeapObject::cast(Object(
DecompressTaggedAny(heap->isolate(), base::Memory<Tagged_t>(addr))));
HeapObject new_target = old_target;
SlotCallbackResult result = callback(FullMaybeObjectSlot(&new_target));
DCHECK(!HasWeakHeapObjectTag(new_target));
if (new_target != old_target) {
base::Memory<Tagged_t>(addr) = CompressTagged(new_target.ptr());
}
return result;
}
case FULL_OBJECT_SLOT: {
return callback(FullMaybeObjectSlot(addr));
}
case CLEARED_SLOT:
break;
}
UNREACHABLE();
}
} // namespace internal
} // namespace v8
#endif // V8_HEAP_REMEMBERED_SET_INL_H_
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