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// Copyright 2020 The Chromium 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 THIRD_PARTY_BLINK_RENDERER_PLATFORM_INSTRUMENTATION_CANVAS_MEMORY_DUMP_PROVIDER_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_INSTRUMENTATION_CANVAS_MEMORY_DUMP_PROVIDER_H_
#include "base/macros.h"
#include "base/synchronization/lock.h"
#include "base/trace_event/memory_dump_provider.h"
#include "third_party/blink/renderer/platform/platform_export.h"
#include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"
#include "third_party/blink/renderer/platform/wtf/hash_set.h"
namespace blink {
class PLATFORM_EXPORT CanvasMemoryDumpClient {
public:
virtual void OnMemoryDump(base::trace_event::ProcessMemoryDump*) = 0;
virtual size_t GetSize() const = 0;
~CanvasMemoryDumpClient() = default;
};
class PLATFORM_EXPORT CanvasMemoryDumpProvider final
: public base::trace_event::MemoryDumpProvider {
USING_FAST_MALLOC(CanvasMemoryDumpProvider);
public:
static CanvasMemoryDumpProvider* Instance();
~CanvasMemoryDumpProvider() override = default;
// MemoryDumpProvider implementation.
bool OnMemoryDump(const base::trace_event::MemoryDumpArgs&,
base::trace_event::ProcessMemoryDump*) override;
void RegisterClient(CanvasMemoryDumpClient*);
void UnregisterClient(CanvasMemoryDumpClient*);
private:
CanvasMemoryDumpProvider() = default;
base::Lock lock_;
WTF::HashSet<CanvasMemoryDumpClient*> clients_ GUARDED_BY(lock_);
DISALLOW_COPY_AND_ASSIGN(CanvasMemoryDumpProvider);
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_INSTRUMENTATION_CANVAS_MEMORY_DUMP_PROVIDER_H_
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