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// Copyright 2015 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 MemoryCacheDumpProvider_h
#define MemoryCacheDumpProvider_h
#include "base/trace_event/memory_dump_provider.h"
#include "base/trace_event/process_memory_dump.h"
#include "platform/PlatformExport.h"
#include "platform/heap/Handle.h"
#include "platform/instrumentation/tracing/web_process_memory_dump.h"
#include "wtf/Allocator.h"
namespace blink {
class PLATFORM_EXPORT MemoryCacheDumpClient : public GarbageCollectedMixin {
public:
virtual ~MemoryCacheDumpClient() {}
virtual bool onMemoryDump(WebMemoryDumpLevelOfDetail,
WebProcessMemoryDump*) = 0;
DECLARE_VIRTUAL_TRACE();
};
// This class is wrapper around MemoryCache to take memory snapshots. It dumps
// the stats of cache only after the cache is created.
class PLATFORM_EXPORT MemoryCacheDumpProvider final
: public base::trace_event::MemoryDumpProvider {
USING_FAST_MALLOC(MemoryCacheDumpProvider);
public:
// This class is singleton since there is a global MemoryCache object.
static MemoryCacheDumpProvider* instance();
~MemoryCacheDumpProvider() override;
// base::trace_event::MemoryDumpProvider implementation.
bool OnMemoryDump(const base::trace_event::MemoryDumpArgs&,
base::trace_event::ProcessMemoryDump*) override;
void setMemoryCache(MemoryCacheDumpClient* client) {
DCHECK(isMainThread());
m_client = client;
}
private:
MemoryCacheDumpProvider();
WeakPersistent<MemoryCacheDumpClient> m_client;
WTF_MAKE_NONCOPYABLE(MemoryCacheDumpProvider);
};
} // namespace blink
#endif // MemoryCacheDumpProvider_h
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