1 // Copyright (c) 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"
9 ProcessMetrics::ProcessMetrics(ProcessHandle process)
14 processor_count_ = base::SysInfo::NumberOfProcessors();
18 ProcessMetrics* ProcessMetrics::CreateProcessMetrics(ProcessHandle process) {
19 return new ProcessMetrics(process);
22 size_t ProcessMetrics::GetPagefileUsage() const {
23 struct kinfo_proc info;
24 int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, process_ };
25 size_t length = sizeof(info);
27 if (sysctl(mib, arraysize(mib), &info, &length, NULL, 0) < 0)
33 size_t ProcessMetrics::GetPeakPagefileUsage() const {
37 size_t ProcessMetrics::GetWorkingSetSize() const {
38 struct kinfo_proc info;
39 int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, process_ };
40 size_t length = sizeof(info);
42 if (sysctl(mib, arraysize(mib), &info, &length, NULL, 0) < 0)
45 return info.ki_rssize * getpagesize();
48 size_t ProcessMetrics::GetPeakWorkingSetSize() const {
52 bool ProcessMetrics::GetMemoryBytes(size_t* private_bytes,
53 size_t* shared_bytes) {
54 WorkingSetKBytes ws_usage;
55 if (!GetWorkingSetKBytes(&ws_usage))
59 *private_bytes = ws_usage.priv << 10;
62 *shared_bytes = ws_usage.shared * 1024;
67 bool ProcessMetrics::GetWorkingSetKBytes(WorkingSetKBytes* ws_usage) const {
68 // TODO(bapt) be sure we can't be precise
69 size_t priv = GetWorkingSetSize();
72 ws_usage->priv = priv / 1024;
73 ws_usage->shareable = 0;
79 double ProcessMetrics::GetCPUUsage() {
80 struct kinfo_proc info;
81 int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, process_ };
82 size_t length = sizeof(info);
85 int retval = gettimeofday(&now, NULL);
89 if (sysctl(mib, arraysize(mib), &info, &length, NULL, 0) < 0)
92 return (info.ki_pctcpu / FSCALE) * 100.0;
95 bool ProcessMetrics::GetIOCounters(IoCounters* io_counters) const {
99 size_t GetSystemCommitCharge() {
100 int mib[2], pagesize;
101 unsigned long mem_total, mem_free, mem_inactive;
102 size_t length = sizeof(mem_total);
104 if (sysctl(mib, arraysize(mib), &mem_total, &length, NULL, 0) < 0)
107 length = sizeof(mem_free);
108 if (sysctlbyname("vm.stats.vm.v_free_count", &mem_free, &length, NULL, 0) < 0)
111 length = sizeof(mem_inactive);
112 if (sysctlbyname("vm.stats.vm.v_inactive_count", &mem_inactive, &length,
117 pagesize = getpagesize();
119 return mem_total - (mem_free*pagesize) - (mem_inactive*pagesize);