// 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 { // static std::unique_ptr ProcessMetrics::CreateProcessMetrics( ProcessHandle process) { return WrapUnique(new ProcessMetrics(process)); } bool ProcessMetrics::GetIOCounters(IoCounters* io_counters) const { return false; } static int GetProcessCPU(pid_t pid) { struct kinfo_proc info; size_t length; int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, pid, sizeof(struct kinfo_proc), 0 }; if (sysctl(mib, std::size(mib), NULL, &length, NULL, 0) < 0) return -1; mib[5] = (length / sizeof(struct kinfo_proc)); if (sysctl(mib, std::size(mib), &info, &length, NULL, 0) < 0) return 0; return info.p_pctcpu; } double ProcessMetrics::GetPlatformIndependentCPUUsage() { TimeTicks time = TimeTicks::Now(); if (last_cpu_time_.is_zero()) { // First call, just set the last values. last_cpu_time_ = time; return 0; } int cpu = GetProcessCPU(process_); last_cpu_time_ = time; double percentage = static_cast((cpu * 100.0) / FSCALE); return percentage; } TimeDelta ProcessMetrics::GetCumulativeCPUUsage() { NOTREACHED(); return TimeDelta(); } ProcessMetrics::ProcessMetrics(ProcessHandle process) : process_(process), last_cpu_(0) {} size_t GetSystemCommitCharge() { int mib[] = { CTL_VM, VM_METER }; int pagesize; struct vmtotal vmtotal; unsigned long mem_total, mem_free, mem_inactive; size_t len = sizeof(vmtotal); if (sysctl(mib, std::size(mib), &vmtotal, &len, NULL, 0) < 0) return 0; mem_total = vmtotal.t_vm; mem_free = vmtotal.t_free; mem_inactive = vmtotal.t_vm - vmtotal.t_avm; pagesize = getpagesize(); return mem_total - (mem_free*pagesize) - (mem_inactive*pagesize); } } // namespace base