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"
7 #include <sys/sysctl.h>
11 #include "base/sys_info.h"
15 ProcessMetrics::ProcessMetrics(ProcessHandle process)
19 processor_count_ = base::SysInfo::NumberOfProcessors();
23 ProcessMetrics* ProcessMetrics::CreateProcessMetrics(ProcessHandle process) {
24 return new ProcessMetrics(process);
27 size_t ProcessMetrics::GetPagefileUsage() const {
28 struct kinfo_proc info;
29 int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, process_ };
30 size_t length = sizeof(info);
32 if (sysctl(mib, arraysize(mib), &info, &length, NULL, 0) < 0)
38 size_t ProcessMetrics::GetPeakPagefileUsage() const {
42 size_t ProcessMetrics::GetWorkingSetSize() const {
43 struct kinfo_proc info;
44 int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, process_ };
45 size_t length = sizeof(info);
47 if (sysctl(mib, arraysize(mib), &info, &length, NULL, 0) < 0)
50 return info.ki_rssize * getpagesize();
53 size_t ProcessMetrics::GetPeakWorkingSetSize() const {
57 bool ProcessMetrics::GetMemoryBytes(size_t* private_bytes,
58 size_t* shared_bytes) {
59 WorkingSetKBytes ws_usage;
60 if (!GetWorkingSetKBytes(&ws_usage))
64 *private_bytes = ws_usage.priv << 10;
67 *shared_bytes = ws_usage.shared * 1024;
72 bool ProcessMetrics::GetWorkingSetKBytes(WorkingSetKBytes* ws_usage) const {
73 // TODO(bapt) be sure we can't be precise
74 size_t priv = GetWorkingSetSize();
77 ws_usage->priv = priv / 1024;
78 ws_usage->shareable = 0;
84 double ProcessMetrics::GetCPUUsage() {
85 struct kinfo_proc info;
86 int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, process_ };
87 size_t length = sizeof(info);
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);