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.
4
5 #include "base/process/process_metrics.h"
6
7 #include <sys/sysctl.h>
8 #include <sys/user.h>
9 #include <unistd.h>
10
11 #include "base/sys_info.h"
12
13 namespace base {
14
ProcessMetrics(ProcessHandle process)15 ProcessMetrics::ProcessMetrics(ProcessHandle process)
16 : process_(process),
17 last_system_time_(0),
18 last_cpu_(0) {
19 processor_count_ = base::SysInfo::NumberOfProcessors();
20 }
21
22 // static
CreateProcessMetrics(ProcessHandle process)23 ProcessMetrics* ProcessMetrics::CreateProcessMetrics(ProcessHandle process) {
24 return new ProcessMetrics(process);
25 }
26
GetPagefileUsage() const27 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);
31
32 if (sysctl(mib, arraysize(mib), &info, &length, NULL, 0) < 0)
33 return 0;
34
35 return info.ki_size;
36 }
37
GetPeakPagefileUsage() const38 size_t ProcessMetrics::GetPeakPagefileUsage() const {
39 return 0;
40 }
41
GetWorkingSetSize() const42 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);
46
47 if (sysctl(mib, arraysize(mib), &info, &length, NULL, 0) < 0)
48 return 0;
49
50 return info.ki_rssize * getpagesize();
51 }
52
GetPeakWorkingSetSize() const53 size_t ProcessMetrics::GetPeakWorkingSetSize() const {
54 return 0;
55 }
56
GetMemoryBytes(size_t * private_bytes,size_t * shared_bytes)57 bool ProcessMetrics::GetMemoryBytes(size_t* private_bytes,
58 size_t* shared_bytes) {
59 WorkingSetKBytes ws_usage;
60 if (!GetWorkingSetKBytes(&ws_usage))
61 return false;
62
63 if (private_bytes)
64 *private_bytes = ws_usage.priv << 10;
65
66 if (shared_bytes)
67 *shared_bytes = ws_usage.shared * 1024;
68
69 return true;
70 }
71
GetWorkingSetKBytes(WorkingSetKBytes * ws_usage) const72 bool ProcessMetrics::GetWorkingSetKBytes(WorkingSetKBytes* ws_usage) const {
73 // TODO(bapt) be sure we can't be precise
74 size_t priv = GetWorkingSetSize();
75 if (!priv)
76 return false;
77 ws_usage->priv = priv / 1024;
78 ws_usage->shareable = 0;
79 ws_usage->shared = 0;
80
81 return true;
82 }
83
GetCPUUsage()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);
88
89 if (sysctl(mib, arraysize(mib), &info, &length, NULL, 0) < 0)
90 return 0;
91
92 return (info.ki_pctcpu / FSCALE) * 100.0;
93 }
94
GetIOCounters(IoCounters * io_counters) const95 bool ProcessMetrics::GetIOCounters(IoCounters* io_counters) const {
96 return false;
97 }
98
GetSystemCommitCharge()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);
103
104 if (sysctl(mib, arraysize(mib), &mem_total, &length, NULL, 0) < 0)
105 return 0;
106
107 length = sizeof(mem_free);
108 if (sysctlbyname("vm.stats.vm.v_free_count", &mem_free, &length, NULL, 0) < 0)
109 return 0;
110
111 length = sizeof(mem_inactive);
112 if (sysctlbyname("vm.stats.vm.v_inactive_count", &mem_inactive, &length,
113 NULL, 0) < 0) {
114 return 0;
115 }
116
117 pagesize = getpagesize();
118
119 return mem_total - (mem_free*pagesize) - (mem_inactive*pagesize);
120 }
121
122 } // namespace base
123