third_party/WebKit/Source/core/timing/MemoryInfo.h

/*
 * Copyright (C) 2010 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * 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.
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 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "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 THE COPYRIGHT
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 */

#ifndef MemoryInfo_h
#define MemoryInfo_h

#include "core/CoreExport.h"
#include "platform/bindings/ScriptWrappable.h"
#include "platform/heap/Handle.h"
#include "platform/wtf/Allocator.h"

namespace blink {

struct HeapInfo {
  DISALLOW_NEW();
  HeapInfo()
      : used_js_heap_size(0), total_js_heap_size(0), js_heap_size_limit(0) {}

  size_t used_js_heap_size;
  size_t total_js_heap_size;
  size_t js_heap_size_limit;
};

class CORE_EXPORT MemoryInfo final : public ScriptWrappable {
  DEFINE_WRAPPERTYPEINFO();

 public:
  static MemoryInfo* Create() { return new MemoryInfo(); }

  size_t totalJSHeapSize() const { return info_.total_js_heap_size; }
  size_t usedJSHeapSize() const { return info_.used_js_heap_size; }
  size_t jsHeapSizeLimit() const { return info_.js_heap_size_limit; }

 private:
  MemoryInfo();

  HeapInfo info_;
};

CORE_EXPORT size_t QuantizeMemorySize(size_t);

}  // namespace blink

#endif  // MemoryInfo_h