kc3-lang/angle/src/common/system_utils_mac.cpp

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• Hash : f0dd087e
  Author :
  Date : 2019-08-23T15:45:34
  

  Move timer functionality from util/ to common/
  
  The main timer functionality (get absolute time) is moved to common/ for
  use in ANGLE itself (in upcoming overlay change).  util/Timer.h is no
  longer an abstract class and uses this functionality to implement the
  timer.
  
  Bug: angleproject:3757
  Change-Id: I3fe418778d80d1089c9bfe43a9e8098e43236f18
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1769061
  Reviewed-by: Cody Northrop <cnorthrop@google.com>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Tim Van Patten <timvp@google.com>
  Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
  

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• src/common/system_utils_mac.cpp

• //
  // Copyright 2015 The ANGLE 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.
  //
  
  // system_utils_osx.cpp: Implementation of OS-specific functions for OSX
  
  #include "system_utils.h"
  
  #include <unistd.h>
  
  #include <CoreServices/CoreServices.h>
  #include <mach-o/dyld.h>
  #include <mach/mach.h>
  #include <mach/mach_time.h>
  #include <cstdlib>
  #include <vector>
  
  #include <array>
  
  namespace angle
  {
  std::string GetExecutablePath()
  {
      std::string result;
  
      uint32_t size = 0;
      _NSGetExecutablePath(nullptr, &size);
  
      std::vector<char> buffer;
      buffer.resize(size + 1);
  
      _NSGetExecutablePath(buffer.data(), &size);
      buffer[size] = '\0';
  
      if (!strrchr(buffer.data(), '/'))
      {
          return "";
      }
      return buffer.data();
  }
  
  std::string GetExecutableDirectory()
  {
      std::string executablePath = GetExecutablePath();
      size_t lastPathSepLoc      = executablePath.find_last_of("/");
      return (lastPathSepLoc != std::string::npos) ? executablePath.substr(0, lastPathSepLoc) : "";
  }
  
  const char *GetSharedLibraryExtension()
  {
      return "dylib";
  }
  
  double GetCurrentTime()
  {
      mach_timebase_info_data_t timebaseInfo;
      mach_timebase_info(&timebaseInfo);
  
      double secondCoeff = timebaseInfo.numer * 1e-9 / timebaseInfo.denom;
      return secondCoeff * mach_absolute_time();
  }
  }  // namespace angle
  

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