root/base/process/process_metrics.cc

DEFINITIONS

1. Sample
2. ToValue
3. GetPlatformIndependentCPUUsage
4. GetIdleWakeupsPerSecond

// Copyright 2013 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.

#include "base/process/process_metrics.h"

#include "base/logging.h"
#include "base/values.h"

namespace base {

SystemMetrics::SystemMetrics() {
  committed_memory_ = 0;
}

SystemMetrics SystemMetrics::Sample() {
  SystemMetrics system_metrics;

  system_metrics.committed_memory_ = GetSystemCommitCharge();
#if defined(OS_LINUX) || defined(OS_ANDROID)
  GetSystemMemoryInfo(&system_metrics.memory_info_);
  GetSystemDiskInfo(&system_metrics.disk_info_);
#endif
#if defined(OS_CHROMEOS)
  GetSwapInfo(&system_metrics.swap_info_);
#endif

  return system_metrics;
}

scoped_ptr<Value> SystemMetrics::ToValue() const {
  scoped_ptr<DictionaryValue> res(new DictionaryValue());

  res->SetInteger("committed_memory", static_cast<int>(committed_memory_));
#if defined(OS_LINUX) || defined(OS_ANDROID)
  res->Set("meminfo", memory_info_.ToValue().release());
  res->Set("diskinfo", disk_info_.ToValue().release());
#endif
#if defined(OS_CHROMEOS)
  res->Set("swapinfo", swap_info_.ToValue().release());
#endif

  return res.PassAs<Value>();
}

double ProcessMetrics::GetPlatformIndependentCPUUsage() {
#if defined(OS_WIN)
  return GetCPUUsage() * processor_count_;
#else
  return GetCPUUsage();
#endif
}

#if !defined(OS_MACOSX)
int ProcessMetrics::GetIdleWakeupsPerSecond() {
  NOTIMPLEMENTED();  // http://crbug.com/20488
  return 0;
}
#endif  // !defined(OS_MACOSX)

}  // namespace base