147be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org/* 247be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org * Copyright 2010 The WebRTC Project Authors. All rights reserved. 347be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org * 447be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org * Use of this source code is governed by a BSD-style license 547be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org * that can be found in the LICENSE file in the root of the source 647be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org * tree. An additional intellectual property rights grant can be found 747be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org * in the file PATENTS. All contributing project authors may 847be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org * be found in the AUTHORS file in the root of the source tree. 947be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org */ 1047be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 1147be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org#ifndef WEBRTC_BASE_CPUMONITOR_H_ 1247be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org#define WEBRTC_BASE_CPUMONITOR_H_ 1347be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 1447be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org#include "webrtc/base/basictypes.h" 1547be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org#include "webrtc/base/messagehandler.h" 1647be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org#include "webrtc/base/scoped_ptr.h" 1747be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org#include "webrtc/base/sigslot.h" 1847be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org#if defined(WEBRTC_LINUX) 1947be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org#include "webrtc/base/stream.h" 2047be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org#endif // defined(WEBRTC_LINUX) 2147be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 2247be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.orgnamespace rtc { 2347be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.orgclass Thread; 2447be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.orgclass SystemInfo; 2547be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 2647be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.orgstruct CpuStats { 2747be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org CpuStats() 2847be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org : prev_total_times_(0), 2947be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org prev_cpu_times_(0), 3047be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org prev_load_(0.f), 3147be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org prev_load_time_(0u) { 3247be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org } 3347be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 3447be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org uint64 prev_total_times_; 3547be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org uint64 prev_cpu_times_; 3647be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org float prev_load_; // Previous load value. 3747be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org uint32 prev_load_time_; // Time previous load value was taken. 3847be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org}; 3947be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 4047be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org// CpuSampler samples the process and system load. 4147be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.orgclass CpuSampler { 4247be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org public: 4347be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org CpuSampler(); 4447be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org ~CpuSampler(); 4547be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 4647be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org // Initialize CpuSampler. Returns true if successful. 4747be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org bool Init(); 4847be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 4947be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org // Set minimum interval in ms between computing new load values. 5047be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org // Default 950 ms. Set to 0 to disable interval. 5147be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org void set_load_interval(int min_load_interval); 5247be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 5347be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org // Return CPU load of current process as a float from 0 to 1. 5447be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org float GetProcessLoad(); 5547be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 5647be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org // Return CPU load of current process as a float from 0 to 1. 5747be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org float GetSystemLoad(); 5847be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 5947be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org // Return number of cpus. Includes hyperthreads. 6047be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org int GetMaxCpus() const; 6147be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 6247be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org // Return current number of cpus available to this process. 6347be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org int GetCurrentCpus(); 6447be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 6547be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org // For testing. Allows forcing of fallback to using NTDLL functions. 6647be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org void set_force_fallback(bool fallback) { 6747be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org#if defined(WEBRTC_WIN) 6847be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org force_fallback_ = fallback; 6947be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org#endif 7047be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org } 7147be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 7247be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org private: 7347be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org float UpdateCpuLoad(uint64 current_total_times, 7447be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org uint64 current_cpu_times, 7547be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org uint64 *prev_total_times, 7647be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org uint64 *prev_cpu_times); 7747be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org CpuStats process_; 7847be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org CpuStats system_; 7947be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org int cpus_; 8047be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org int min_load_interval_; // Minimum time between computing new load. 8147be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org scoped_ptr<SystemInfo> sysinfo_; 8247be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org#if defined(WEBRTC_WIN) 8347be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org void* get_system_times_; 8447be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org void* nt_query_system_information_; 8547be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org bool force_fallback_; 8647be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org#endif 8747be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org#if defined(WEBRTC_LINUX) 8847be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org // File for reading /proc/stat 8947be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org scoped_ptr<FileStream> sfile_; 9047be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org#endif // defined(WEBRTC_LINUX) 9147be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org}; 9247be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 9347be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org// CpuMonitor samples and signals the CPU load periodically. 9447be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.orgclass CpuMonitor 9547be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org : public rtc::MessageHandler, public sigslot::has_slots<> { 9647be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org public: 9747be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org explicit CpuMonitor(Thread* thread); 9847be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org virtual ~CpuMonitor(); 9947be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org void set_thread(Thread* thread); 10047be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 10147be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org bool Start(int period_ms); 10247be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org void Stop(); 10347be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org // Signal parameters are current cpus, max cpus, process load and system load. 10447be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org sigslot::signal4<int, int, float, float> SignalUpdate; 10547be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 10647be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org protected: 10747be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org // Override virtual method of parent MessageHandler. 10847be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org virtual void OnMessage(rtc::Message* msg); 10947be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org // Clear the monitor thread and stop sending it messages if the thread goes 11047be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org // away before our lifetime. 11147be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org void OnMessageQueueDestroyed() { monitor_thread_ = NULL; } 11247be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 11347be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org private: 11447be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org Thread* monitor_thread_; 11547be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org CpuSampler sampler_; 11647be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org int period_ms_; 11747be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 11847be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org DISALLOW_COPY_AND_ASSIGN(CpuMonitor); 11947be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org}; 12047be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 12147be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org} // namespace rtc 12247be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org 12347be73b8629244d6bb63a28198f97f040ce53d21henrike@webrtc.org#endif // WEBRTC_BASE_CPUMONITOR_H_ 124