1 // Copyright 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "base/process/process_metrics.h"
7 #include "base/logging.h"
8 #include "base/values.h"
12 SystemMetrics::SystemMetrics() {
13 committed_memory_ = 0;
16 SystemMetrics SystemMetrics::Sample() {
17 SystemMetrics system_metrics;
19 system_metrics.committed_memory_ = GetSystemCommitCharge();
20 #if defined(OS_LINUX) || defined(OS_ANDROID)
21 GetSystemMemoryInfo(&system_metrics.memory_info_);
22 GetSystemDiskInfo(&system_metrics.disk_info_);
24 #if defined(OS_CHROMEOS)
25 GetSwapInfo(&system_metrics.swap_info_);
28 return system_metrics;
31 scoped_ptr<Value> SystemMetrics::ToValue() const {
32 scoped_ptr<DictionaryValue> res(new DictionaryValue());
34 res->SetInteger("committed_memory", static_cast<int>(committed_memory_));
35 #if defined(OS_LINUX) || defined(OS_ANDROID)
36 res->Set("meminfo", memory_info_.ToValue().release());
37 res->Set("diskinfo", disk_info_.ToValue().release());
39 #if defined(OS_CHROMEOS)
40 res->Set("swapinfo", swap_info_.ToValue().release());
46 double ProcessMetrics::GetPlatformIndependentCPUUsage() {
48 return GetCPUUsage() * processor_count_;
54 #if defined(OS_MACOSX) || defined(OS_LINUX)
55 int ProcessMetrics::CalculateIdleWakeupsPerSecond(
56 uint64 absolute_idle_wakeups) {
57 TimeTicks time = TimeTicks::Now();
59 if (last_absolute_idle_wakeups_ == 0) {
60 // First call, just set the last values.
61 last_idle_wakeups_time_ = time;
62 last_absolute_idle_wakeups_ = absolute_idle_wakeups;
66 int64 wakeups_delta = absolute_idle_wakeups - last_absolute_idle_wakeups_;
67 int64 time_delta = (time - last_idle_wakeups_time_).InMicroseconds();
68 if (time_delta == 0) {
73 last_idle_wakeups_time_ = time;
74 last_absolute_idle_wakeups_ = absolute_idle_wakeups;
76 // Round to average wakeups per second.
77 int64 wakeups_delta_for_ms = wakeups_delta * Time::kMicrosecondsPerSecond;
78 return (wakeups_delta_for_ms + time_delta / 2) / time_delta;
81 int ProcessMetrics::GetIdleWakeupsPerSecond() {
82 NOTIMPLEMENTED(); // http://crbug.com/120488
85 #endif // defined(OS_MACOSX) || defined(OS_LINUX)