119 lines
3.7 KiB
C++
119 lines
3.7 KiB
C++
/*
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* Copyright 2008 The WebRTC Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef WEBRTC_BASE_LINUX_H_
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#define WEBRTC_BASE_LINUX_H_
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#if defined(WEBRTC_LINUX)
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#include <string>
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#include <map>
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#include <memory>
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#include <vector>
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#include "webrtc/base/stream.h"
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namespace rtc {
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//////////////////////////////////////////////////////////////////////////////
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// ConfigParser parses a FileStream of an ".ini."-type format into a map.
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//////////////////////////////////////////////////////////////////////////////
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// Sample Usage:
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// ConfigParser parser;
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// ConfigParser::MapVector key_val_pairs;
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// if (parser.Open(inifile) && parser.Parse(&key_val_pairs)) {
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// for (int section_num=0; i < key_val_pairs.size(); ++section_num) {
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// std::string val1 = key_val_pairs[section_num][key1];
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// std::string val2 = key_val_pairs[section_num][key2];
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// // Do something with valn;
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// }
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// }
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class ConfigParser {
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public:
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typedef std::map<std::string, std::string> SimpleMap;
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typedef std::vector<SimpleMap> MapVector;
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ConfigParser();
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virtual ~ConfigParser();
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virtual bool Open(const std::string& filename);
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virtual void Attach(StreamInterface* stream);
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virtual bool Parse(MapVector* key_val_pairs);
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virtual bool ParseSection(SimpleMap* key_val_pair);
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virtual bool ParseLine(std::string* key, std::string* value);
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private:
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std::unique_ptr<StreamInterface> instream_;
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};
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//////////////////////////////////////////////////////////////////////////////
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// ProcCpuInfo reads CPU info from the /proc subsystem on any *NIX platform.
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//////////////////////////////////////////////////////////////////////////////
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// Sample Usage:
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// ProcCpuInfo proc_info;
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// int no_of_cpu;
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// if (proc_info.LoadFromSystem()) {
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// std::string out_str;
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// proc_info.GetNumCpus(&no_of_cpu);
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// proc_info.GetCpuStringValue(0, "vendor_id", &out_str);
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// }
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// }
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class ProcCpuInfo {
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public:
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ProcCpuInfo();
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virtual ~ProcCpuInfo();
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// Reads the proc subsystem's cpu info into memory. If this fails, this
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// returns false; if it succeeds, it returns true.
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virtual bool LoadFromSystem();
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// Obtains the number of logical CPU threads and places the value num.
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virtual bool GetNumCpus(int* num);
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// Obtains the number of physical CPU cores and places the value num.
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virtual bool GetNumPhysicalCpus(int* num);
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// Obtains the CPU family id.
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virtual bool GetCpuFamily(int* id);
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// Obtains the number of sections in /proc/cpuinfo, which may be greater
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// than the number of CPUs (e.g. on ARM)
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virtual bool GetSectionCount(size_t* count);
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// Looks for the CPU proc item with the given name for the given section
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// number and places the string value in result.
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virtual bool GetSectionStringValue(size_t section_num, const std::string& key,
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std::string* result);
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// Looks for the CPU proc item with the given name for the given section
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// number and places the int value in result.
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virtual bool GetSectionIntValue(size_t section_num, const std::string& key,
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int* result);
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private:
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ConfigParser::MapVector sections_;
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};
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// Returns the output of "uname".
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std::string ReadLinuxUname();
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// Returns the content (int) of
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// /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq
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// Returns -1 on error.
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int ReadCpuMaxFreq();
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} // namespace rtc
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#endif // defined(WEBRTC_LINUX)
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#endif // WEBRTC_BASE_LINUX_H_
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