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

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• Hash : a66779fc
  Author :
  Date : 2017-01-06T10:43:44
  

  Vulkan: Load layers relative to executable dir.
  
  Instead of baking in a relative path and expecting the app to run from
  a fixed directory, we can change the CWD at runtime so the layers can
  load relative to the current executable directory.
  
  Future alternatives could include modifying the layers SDK to provide
  a path dynamically, but for now the relative paths must be baked in
  at compile-time.
  
  BUG=angleproject:1319
  BUG=chromium:677841
  
  Change-Id: I443b6b35d38276ea667cdf08ec2204ea280b6cec
  Reviewed-on: https://chromium-review.googlesource.com/425441
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Frank Henigman <fjhenigman@chromium.org>
  

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• src/common/system_utils_mac.cpp

• //
  // Copyright (c) 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 <cstdlib>
  #include <mach-o/dyld.h>
  #include <vector>
  
  #include <array>
  
  namespace angle
  {
  
  namespace
  {
  
  std::string GetExecutablePathImpl()
  {
      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 GetExecutableDirectoryImpl()
  {
      std::string executablePath = GetExecutablePath();
      size_t lastPathSepLoc      = executablePath.find_last_of("/");
      return (lastPathSepLoc != std::string::npos) ? executablePath.substr(0, lastPathSepLoc) : "";
  }
  
  }  // anonymous namespace
  
  const char *GetExecutablePath()
  {
      // TODO(jmadill): Make global static string thread-safe.
      const static std::string &exePath = GetExecutablePathImpl();
      return exePath.c_str();
  }
  
  const char *GetExecutableDirectory()
  {
      // TODO(jmadill): Make global static string thread-safe.
      const static std::string &exeDir = GetExecutableDirectoryImpl();
      return exeDir.c_str();
  }
  
  const char *GetSharedLibraryExtension()
  {
      return "dylib";
  }
  
  Optional<std::string> GetCWD()
  {
      std::array<char, 4096> pathBuf;
      char *result = getcwd(pathBuf.data(), pathBuf.size());
      if (result == nullptr)
      {
          return Optional<std::string>::Invalid();
      }
      return std::string(pathBuf.data());
  }
  
  bool SetCWD(const char *dirName)
  {
      return (chdir(dirName) == 0);
  }
  
  }  // namespace angle
  

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