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- // 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/memory/ptr_util.h"
- #include "base/process/process_metrics_iocounters.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, std::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, std::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
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