| // Copyright (c) 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 <stddef.h> |
| #include <sys/sysctl.h> |
| #include <sys/user.h> |
| #include <unistd.h> |
| |
| #include "base/macros.h" |
| #include "base/memory/ptr_util.h" |
| #include "base/process/process_metrics_iocounters.h" |
| #include "base/stl_util.h" |
| |
| namespace base { |
| |
| ProcessMetrics::ProcessMetrics(ProcessHandle process) |
| : process_(process), |
| last_cpu_(0) {} |
| |
| // static |
| std::unique_ptr<ProcessMetrics> ProcessMetrics::CreateProcessMetrics( |
| ProcessHandle process) { |
| return WrapUnique(new ProcessMetrics(process)); |
| } |
| |
| double ProcessMetrics::GetPlatformIndependentCPUUsage() { |
| struct kinfo_proc info; |
| int mib[] = {CTL_KERN, KERN_PROC, KERN_PROC_PID, process_}; |
| size_t length = sizeof(info); |
| |
| if (sysctl(mib, base::size(mib), &info, &length, NULL, 0) < 0) |
| return 0; |
| |
| return (info.ki_pctcpu / FSCALE) * 100.0; |
| } |
| |
| TimeDelta ProcessMetrics::GetCumulativeCPUUsage() { |
| NOTREACHED(); |
| return TimeDelta(); |
| } |
| |
| bool ProcessMetrics::GetIOCounters(IoCounters* io_counters) const { |
| return false; |
| } |
| |
| size_t GetSystemCommitCharge() { |
| int mib[2], pagesize; |
| unsigned long mem_total, mem_free, mem_inactive; |
| size_t length = sizeof(mem_total); |
| |
| if (sysctl(mib, base::size(mib), &mem_total, &length, NULL, 0) < 0) |
| return 0; |
| |
| length = sizeof(mem_free); |
| if (sysctlbyname("vm.stats.vm.v_free_count", &mem_free, &length, NULL, 0) < 0) |
| return 0; |
| |
| length = sizeof(mem_inactive); |
| if (sysctlbyname("vm.stats.vm.v_inactive_count", &mem_inactive, &length, |
| NULL, 0) < 0) { |
| return 0; |
| } |
| |
| pagesize = getpagesize(); |
| |
| return mem_total - (mem_free*pagesize) - (mem_inactive*pagesize); |
| } |
| |
| } // namespace base |