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