chromium/chrome/browser/memory_details.h

// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CHROME_BROWSER_MEMORY_DETAILS_H_
#define CHROME_BROWSER_MEMORY_DETAILS_H_

#include <map>
#include <string>
#include <vector>

#include "base/memory/ref_counted.h"
#include "base/process/process_handle.h"
#include "base/process/process_metrics.h"
#include "build/build_config.h"
#include "build/chromeos_buildflags.h"
#include "content/public/common/process_type.h"

namespace memory_instrumentation {
class GlobalMemoryDump;
}  // namespace memory_instrumentation

// We collect data about each browser process.  A browser may
// have multiple processes (of course!).  Even IE has multiple
// processes these days.
struct ProcessMemoryInformation { … };

ProcessMemoryInformationList;

// Browser Process Information.
struct ProcessData { … };

// MemoryDetails fetches memory details about current running browsers.
// Because this data can only be fetched asynchronously, callers use
// this class via a callback.
//
// Example usage:
//
//    class MyMemoryDetailConsumer : public MemoryDetails {
//
//      MyMemoryDetailConsumer() {
//        // Anything but |StartFetch()|.
//      }
//
//      // (Or just call |StartFetch()| explicitly if there's nothing else to
//      // do.)
//      void StartDoingStuff() {
//        StartFetch();  // Starts fetching details.
//        // Etc.
//      }
//
//      // Your other class stuff here
//
//      virtual void OnDetailsAvailable() {
//        // do work with memory info here
//      }
//    }
class MemoryDetails : public base::RefCountedThreadSafe<MemoryDetails> { … };

#endif  // CHROME_BROWSER_MEMORY_DETAILS_H_