2017-08-12 16:48:01 +00:00
|
|
|
/*
|
2022-10-23 02:55:20 +00:00
|
|
|
* Copyright (C) 2016-2019 Apple Inc. All rights reserved.
|
2017-08-12 16:48:01 +00:00
|
|
|
*
|
|
|
|
|
* Redistribution and use in source and binary forms, with or without
|
|
|
|
|
* modification, are permitted provided that the following conditions
|
|
|
|
|
* are met:
|
|
|
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
|
|
|
* notice, this list of conditions and the following disclaimer.
|
|
|
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
|
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
|
|
|
* documentation and/or other materials provided with the distribution.
|
|
|
|
|
*
|
|
|
|
|
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
|
|
|
|
|
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
|
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
|
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
|
|
|
|
|
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
|
|
|
|
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
|
|
|
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
|
|
|
|
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
|
|
|
|
|
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
|
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
|
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
#pragma once
|
|
|
|
|
|
|
|
|
|
#include "HeapSnapshotBuilder.h"
|
|
|
|
|
#include "TinyBloomFilter.h"
|
|
|
|
|
|
|
|
|
|
namespace JSC {
|
|
|
|
|
|
|
|
|
|
class HeapSnapshot {
|
|
|
|
|
WTF_MAKE_FAST_ALLOCATED;
|
|
|
|
|
public:
|
|
|
|
|
HeapSnapshot(HeapSnapshot*);
|
|
|
|
|
~HeapSnapshot();
|
|
|
|
|
|
|
|
|
|
HeapSnapshot* previous() const { return m_previous; }
|
|
|
|
|
|
|
|
|
|
void appendNode(const HeapSnapshotNode&);
|
|
|
|
|
void sweepCell(JSCell*);
|
|
|
|
|
void shrinkToFit();
|
|
|
|
|
void finalize();
|
|
|
|
|
|
|
|
|
|
bool isEmpty() const { return m_nodes.isEmpty(); }
|
2020-08-29 13:27:11 +00:00
|
|
|
Optional<HeapSnapshotNode> nodeForCell(JSCell*);
|
|
|
|
|
Optional<HeapSnapshotNode> nodeForObjectIdentifier(unsigned objectIdentifier);
|
2017-08-12 16:48:01 +00:00
|
|
|
|
|
|
|
|
private:
|
|
|
|
|
friend class HeapSnapshotBuilder;
|
2022-10-23 02:55:20 +00:00
|
|
|
static constexpr intptr_t CellToSweepTag = 1;
|
2017-08-12 16:48:01 +00:00
|
|
|
|
|
|
|
|
Vector<HeapSnapshotNode> m_nodes;
|
|
|
|
|
TinyBloomFilter m_filter;
|
|
|
|
|
HeapSnapshot* m_previous { nullptr };
|
|
|
|
|
unsigned m_firstObjectIdentifier { 0 };
|
|
|
|
|
unsigned m_lastObjectIdentifier { 0 };
|
|
|
|
|
bool m_finalized { false };
|
|
|
|
|
bool m_hasCellsToSweep { false };
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
} // namespace JSC
|
