Remove unused files linux.cc/.h and linuxfdwalk.c/.h.

webrtc/base/linux.cc

-/*
- *  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.
- */
-
-#if defined(WEBRTC_LINUX)
-#include "webrtc/base/linux.h"
-
-#include <ctype.h>
-
-#include <errno.h>
-#include <sys/utsname.h>
-#include <sys/wait.h>
-
-#include <cstdio>
-#include <set>
-
-#include "webrtc/base/stringencode.h"
-
-namespace rtc {
-
-static const char kCpuInfoFile[] = "/proc/cpuinfo";
-static const char kCpuMaxFreqFile[] =
-    "/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq";
-
-ProcCpuInfo::ProcCpuInfo() {
-}
-
-ProcCpuInfo::~ProcCpuInfo() {
-}
-
-bool ProcCpuInfo::LoadFromSystem() {
-  ConfigParser procfs;
-  if (!procfs.Open(kCpuInfoFile)) {
-    return false;
-  }
-  return procfs.Parse(&sections_);
-};
-
-bool ProcCpuInfo::GetSectionCount(size_t* count) {
-  if (sections_.empty()) {
-    return false;
-  }
-  if (count) {
-    *count = sections_.size();
-  }
-  return true;
-}
-
-bool ProcCpuInfo::GetNumCpus(int* num) {
-  if (sections_.empty()) {
-    return false;
-  }
-  int total_cpus = 0;
-#if defined(__arm__)
-  // Count the number of blocks that have a "processor" key defined. On ARM,
-  // there may be extra blocks of information that aren't per-processor.
-  size_t section_count = sections_.size();
-  for (size_t i = 0; i < section_count; ++i) {
-    int processor_id;
-    if (GetSectionIntValue(i, "processor", &processor_id)) {
-      ++total_cpus;
-    }
-  }
-  // Single core ARM systems don't include "processor" keys at all, so return
-  // that we have a single core if we didn't find any explicitly above.
-  if (total_cpus == 0) {
-    total_cpus = 1;
-  }
-#else
-  // On X86, there is exactly one info section per processor.
-  total_cpus = static_cast<int>(sections_.size());
-#endif
-  if (num) {
-    *num = total_cpus;
-  }
-  return true;
-}
-
-bool ProcCpuInfo::GetNumPhysicalCpus(int* num) {
-  if (sections_.empty()) {
-    return false;
-  }
-  // TODO: /proc/cpuinfo only reports cores that are currently
-  // _online_, so this may underreport the number of physical cores.
-#if defined(__arm__)
-  // ARM (currently) has no hyperthreading, so just return the same value
-  // as GetNumCpus.
-  return GetNumCpus(num);
-#else
-  int total_cores = 0;
-  std::set<int> physical_ids;
-  size_t section_count = sections_.size();
-  for (size_t i = 0; i < section_count; ++i) {
-    int physical_id;
-    int cores;
-    // Count the cores for the physical id only if we have not counted the id.
-    if (GetSectionIntValue(i, "physical id", &physical_id) &&
-        GetSectionIntValue(i, "cpu cores", &cores) &&
-        physical_ids.find(physical_id) == physical_ids.end()) {
-      physical_ids.insert(physical_id);
-      total_cores += cores;
-    }
-  }
-
-  if (num) {
-    *num = total_cores;
-  }
-  return true;
-#endif
-}
-
-bool ProcCpuInfo::GetCpuFamily(int* id) {
-  int cpu_family = 0;
-
-#if defined(__arm__)
-  // On some ARM platforms, there is no 'cpu family' in '/proc/cpuinfo'. But
-  // there is 'CPU Architecture' which can be used as 'cpu family'.
-  // See http://en.wikipedia.org/wiki/ARM_architecture for a good list of
-  // ARM cpu families, architectures, and their mappings.
-  // There may be multiple sessions that aren't per-processor. We need to scan
-  // through each session until we find the first 'CPU architecture'.
-  size_t section_count = sections_.size();
-  for (size_t i = 0; i < section_count; ++i) {
-    if (GetSectionIntValue(i, "CPU architecture", &cpu_family)) {
-      // We returns the first one (if there are multiple entries).
-      break;
-    };
-  }
-#else
-  GetSectionIntValue(0, "cpu family", &cpu_family);
-#endif
-  if (id) {
-    *id = cpu_family;
-  }
-  return true;
-}
-
-bool ProcCpuInfo::GetSectionStringValue(size_t section_num,
-                                        const std::string& key,
-                                        std::string* result) {
-  if (section_num >= sections_.size()) {
-    return false;
-  }
-  ConfigParser::SimpleMap::iterator iter = sections_[section_num].find(key);
-  if (iter == sections_[section_num].end()) {
-    return false;
-  }
-  *result = iter->second;
-  return true;
-}
-
-bool ProcCpuInfo::GetSectionIntValue(size_t section_num,
-                                     const std::string& key,
-                                     int* result) {
-  if (section_num >= sections_.size()) {
-    return false;
-  }
-  ConfigParser::SimpleMap::iterator iter = sections_[section_num].find(key);
-  if (iter == sections_[section_num].end()) {
-    return false;
-  }
-  return FromString(iter->second, result);
-}
-
-ConfigParser::ConfigParser() {}
-
-ConfigParser::~ConfigParser() {}
-
-bool ConfigParser::Open(const std::string& filename) {
-  FileStream* fs = new FileStream();
-  if (!fs->Open(filename, "r", NULL)) {
-    return false;
-  }
-  instream_.reset(fs);
-  return true;
-}
-
-void ConfigParser::Attach(StreamInterface* stream) {
-  instream_.reset(stream);
-}
-
-bool ConfigParser::Parse(MapVector* key_val_pairs) {
-  // Parses the file and places the found key-value pairs into key_val_pairs.
-  SimpleMap section;
-  while (ParseSection(&section)) {
-    key_val_pairs->push_back(section);
-    section.clear();
-  }
-  return (!key_val_pairs->empty());
-}
-
-bool ConfigParser::ParseSection(SimpleMap* key_val_pair) {
-  // Parses the next section in the filestream and places the found key-value
-  // pairs into key_val_pair.
-  std::string key, value;
-  while (ParseLine(&key, &value)) {
-    (*key_val_pair)[key] = value;
-  }
-  return (!key_val_pair->empty());
-}
-
-bool ConfigParser::ParseLine(std::string* key, std::string* value) {
-  // Parses the next line in the filestream and places the found key-value
-  // pair into key and val.
-  std::string line;
-  if ((instream_->ReadLine(&line)) == SR_EOS) {
-    return false;
-  }
-  std::vector<std::string> tokens;
-  if (2 != split(line, ':', &tokens)) {
-    return false;
-  }
-  // Removes whitespace at the end of Key name
-  size_t pos = tokens[0].length() - 1;
-  while ((pos > 0) && isspace(tokens[0][pos])) {
-    pos--;
-  }
-  tokens[0].erase(pos + 1);
-  // Removes whitespace at the start of value
-  pos = 0;
-  while (pos < tokens[1].length() && isspace(tokens[1][pos])) {
-    pos++;
-  }
-  tokens[1].erase(0, pos);
-  *key = tokens[0];
-  *value = tokens[1];
-  return true;
-}
-
-std::string ReadLinuxUname() {
-  struct utsname buf;
-  if (uname(&buf) < 0) {
-    LOG_ERR(LS_ERROR) << "Can't call uname()";
-    return std::string();
-  }
-  std::ostringstream sstr;
-  sstr << buf.sysname << " "
-       << buf.release << " "
-       << buf.version << " "
-       << buf.machine;
-  return sstr.str();
-}
-
-int ReadCpuMaxFreq() {
-  FileStream fs;
-  std::string str;
-  int freq = -1;
-  if (!fs.Open(kCpuMaxFreqFile, "r", NULL) ||
-      SR_SUCCESS != fs.ReadLine(&str) ||
-      !FromString(str, &freq)) {
-    return -1;
-  }
-  return freq;
-}
-
-}  // namespace rtc
-
-#endif  // defined(WEBRTC_LINUX)