// 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 #include #include #include #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::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