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

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• Hash : 1f56ed2a
  Author :
  Date : 2019-01-03T15:24:22
  

  Add WGLWindow and WGL test configs.
  
  WGLWindow lets us use a Windows driver's bindings instead of ANGLE.
  This only works if the underlying driver supports OpenGL ES
  compatibility.
  
  Also adds the WGL headers, WGL XML, and a specialized WGL loader.
  
  Because of a small driver issue with NVIDIA I added a retry for the WGL
  Window initialization.
  
  Bug: angleproject:2995
  Change-Id: Ie5148ece470dd03df33015f4919ad1fa79a859ec
  Reviewed-on: https://chromium-review.googlesource.com/c/1366021
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
  

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• src/common/system_utils_posix.cpp

• //
  // Copyright 2018 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_posix.cpp: Implementation of POSIX OS-specific functions.
  
  #include "system_utils.h"
  
  #include <array>
  
  #include <dlfcn.h>
  #include <unistd.h>
  
  namespace angle
  {
  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);
  }
  
  bool UnsetEnvironmentVar(const char *variableName)
  {
      return (unsetenv(variableName) == 0);
  }
  
  bool SetEnvironmentVar(const char *variableName, const char *value)
  {
      return (setenv(variableName, value, 1) == 0);
  }
  
  std::string GetEnvironmentVar(const char *variableName)
  {
      const char *value = getenv(variableName);
      return (value == nullptr ? std::string() : std::string(value));
  }
  
  const char *GetPathSeparator()
  {
      return ":";
  }
  
  class PosixLibrary : public Library
  {
    public:
      PosixLibrary(const char *libraryName)
      {
          char buffer[1000];
          int ret = snprintf(buffer, 1000, "%s.%s", libraryName, GetSharedLibraryExtension());
          if (ret > 0 && ret < 1000)
          {
              mModule = dlopen(buffer, RTLD_NOW);
          }
      }
  
      ~PosixLibrary() override
      {
          if (mModule)
          {
              dlclose(mModule);
          }
      }
  
      void *getSymbol(const char *symbolName) override
      {
          if (!mModule)
          {
              return nullptr;
          }
  
          return dlsym(mModule, symbolName);
      }
  
      void *getNative() const override { return mModule; }
  
    private:
      void *mModule = nullptr;
  };
  
  Library *OpenSharedLibrary(const char *libraryName)
  {
      return new PosixLibrary(libraryName);
  }
  }  // namespace angle
  

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