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73 lines
1.8 KiB
C++
73 lines
1.8 KiB
C++
// Copyright (c) 2013 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/process/process_metrics.h"
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#include <stddef.h>
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#include <sys/sysctl.h>
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#include <sys/user.h>
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#include <unistd.h>
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#include "base/macros.h"
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#include "base/memory/ptr_util.h"
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#include "base/process/process_metrics_iocounters.h"
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#include "base/stl_util.h"
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namespace base {
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ProcessMetrics::ProcessMetrics(ProcessHandle process)
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: process_(process),
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last_cpu_(0) {}
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// static
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std::unique_ptr<ProcessMetrics> ProcessMetrics::CreateProcessMetrics(
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ProcessHandle process) {
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return WrapUnique(new ProcessMetrics(process));
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}
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double ProcessMetrics::GetPlatformIndependentCPUUsage() {
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struct kinfo_proc info;
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int mib[] = {CTL_KERN, KERN_PROC, KERN_PROC_PID, process_};
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size_t length = sizeof(info);
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if (sysctl(mib, base::size(mib), &info, &length, NULL, 0) < 0)
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return 0;
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return (info.ki_pctcpu / FSCALE) * 100.0;
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}
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TimeDelta ProcessMetrics::GetCumulativeCPUUsage() {
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NOTREACHED();
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return TimeDelta();
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}
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bool ProcessMetrics::GetIOCounters(IoCounters* io_counters) const {
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return false;
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}
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size_t GetSystemCommitCharge() {
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int mib[2], pagesize;
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unsigned long mem_total, mem_free, mem_inactive;
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size_t length = sizeof(mem_total);
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if (sysctl(mib, base::size(mib), &mem_total, &length, NULL, 0) < 0)
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return 0;
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length = sizeof(mem_free);
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if (sysctlbyname("vm.stats.vm.v_free_count", &mem_free, &length, NULL, 0) < 0)
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return 0;
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length = sizeof(mem_inactive);
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if (sysctlbyname("vm.stats.vm.v_inactive_count", &mem_inactive, &length,
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NULL, 0) < 0) {
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return 0;
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}
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pagesize = getpagesize();
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return mem_total - (mem_free*pagesize) - (mem_inactive*pagesize);
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}
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} // namespace base
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