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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_MARK_COMPACT_INL_H_
#define V8_HEAP_MARK_COMPACT_INL_H_
#include "src/common/globals.h"
#include "src/heap/mark-compact.h"
#include "src/heap/marking-state-inl.h"
#include "src/heap/marking-visitor-inl.h"
#include "src/heap/marking-worklist-inl.h"
#include "src/heap/marking-worklist.h"
#include "src/heap/objects-visiting-inl.h"
#include "src/heap/remembered-set-inl.h"
#include "src/objects/js-collection-inl.h"
#include "src/objects/transitions.h"
#include "src/roots/roots.h"
namespace v8 {
namespace internal {
void MarkCompactCollector::MarkObject(Tagged<HeapObject> host,
Tagged<HeapObject> obj) {
DCHECK(ReadOnlyHeap::Contains(obj) || heap_->Contains(obj));
if (marking_state_->TryMark(obj)) {
local_marking_worklists_->Push(obj);
if (V8_UNLIKELY(v8_flags.track_retaining_path)) {
heap_->AddRetainer(host, obj);
}
}
}
// static
void MarkCompactCollector::RecordSlot(Tagged<HeapObject> object,
ObjectSlot slot,
Tagged<HeapObject> target) {
RecordSlot(object, HeapObjectSlot(slot), target);
}
// static
void MarkCompactCollector::RecordSlot(Tagged<HeapObject> object,
HeapObjectSlot slot,
Tagged<HeapObject> target) {
MemoryChunk* source_page = MemoryChunk::FromHeapObject(object);
if (!source_page->ShouldSkipEvacuationSlotRecording()) {
RecordSlot(source_page, slot, target);
}
}
// static
void MarkCompactCollector::RecordSlot(MemoryChunk* source_page,
HeapObjectSlot slot,
Tagged<HeapObject> target) {
BasicMemoryChunk* target_page = BasicMemoryChunk::FromHeapObject(target);
if (target_page->IsEvacuationCandidate()) {
if (target_page->IsFlagSet(MemoryChunk::IS_EXECUTABLE)) {
RememberedSet<OLD_TO_CODE>::Insert<AccessMode::ATOMIC>(source_page,
slot.address());
} else if (V8_LIKELY(!target_page->InWritableSharedSpace()) ||
source_page->heap()->isolate()->is_shared_space_isolate()) {
DCHECK_EQ(source_page->heap(), target_page->heap());
RememberedSet<OLD_TO_OLD>::Insert<AccessMode::ATOMIC>(source_page,
slot.address());
} else {
// DCHECK here that we only don't record in case of local->shared
// references in a client GC.
DCHECK(!source_page->heap()->isolate()->is_shared_space_isolate());
DCHECK(target_page->heap()->isolate()->is_shared_space_isolate());
DCHECK(target_page->InWritableSharedSpace());
}
}
}
void MarkCompactCollector::AddTransitionArray(Tagged<TransitionArray> array) {
local_weak_objects()->transition_arrays_local.Push(array);
}
} // namespace internal
} // namespace v8
#endif // V8_HEAP_MARK_COMPACT_INL_H_
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