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// Copyright 2012 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_INCREMENTAL_MARKING_INL_H_
#define V8_HEAP_INCREMENTAL_MARKING_INL_H_
#include "src/heap/incremental-marking.h"
#include "src/isolate.h"
#include "src/objects/maybe-object.h"
namespace v8 {
namespace internal {
void IncrementalMarking::RecordWrite(HeapObject* obj, Object** slot,
Object* value) {
DCHECK_IMPLIES(slot != nullptr, !HasWeakHeapObjectTag(*slot));
DCHECK(!HasWeakHeapObjectTag(value));
RecordMaybeWeakWrite(obj, reinterpret_cast<MaybeObject**>(slot),
reinterpret_cast<MaybeObject*>(value));
}
void IncrementalMarking::RecordMaybeWeakWrite(HeapObject* obj,
MaybeObject** slot,
MaybeObject* value) {
// When writing a weak reference, treat it as strong for the purposes of the
// marking barrier.
HeapObject* heap_object;
if (IsMarking() && value->ToStrongOrWeakHeapObject(&heap_object)) {
RecordWriteSlow(obj, reinterpret_cast<HeapObjectReference**>(slot),
heap_object);
}
}
void IncrementalMarking::RecordWrites(HeapObject* obj) {
if (IsMarking()) {
if (FLAG_concurrent_marking || marking_state()->IsBlack(obj)) {
RevisitObject(obj);
}
}
}
void IncrementalMarking::RecordWriteIntoCode(Code* host, RelocInfo* rinfo,
Object* value) {
if (IsMarking() && value->IsHeapObject()) {
RecordWriteIntoCodeSlow(host, rinfo, value);
}
}
void IncrementalMarking::RestartIfNotMarking() {
if (state_ == COMPLETE) {
state_ = MARKING;
if (FLAG_trace_incremental_marking) {
heap()->isolate()->PrintWithTimestamp(
"[IncrementalMarking] Restarting (new grey objects)\n");
}
}
}
} // namespace internal
} // namespace v8
#endif // V8_HEAP_INCREMENTAL_MARKING_INL_H_
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