kc3-lang/angle/src/common/system_utils_win32.cpp

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• Hash : 5eadaf85
  Author :
  Date : 2020-01-13T17:21:53
  

  Fix and improve UWP build.
  
  Reorganizes the build files to work with a more divided setup. It is
  unclear if we'll ever be able to run tests in a UWP config. This at
  least sets up the organization so it would at some point be possible.
  
  Bug: angleproject:4182
  Change-Id: I49dddfcdc0118b11466fe171f949c28d101ac6a2
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1953484
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
  

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• src/common/system_utils_win32.cpp

• //
  // Copyright 2019 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_win32.cpp: Implementation of OS-specific functions for Windows.
  
  #include "system_utils.h"
  
  #include <windows.h>
  #include <array>
  
  namespace angle
  {
  bool UnsetEnvironmentVar(const char *variableName)
  {
      return (SetEnvironmentVariableA(variableName, nullptr) == TRUE);
  }
  
  bool SetEnvironmentVar(const char *variableName, const char *value)
  {
      return (SetEnvironmentVariableA(variableName, value) == TRUE);
  }
  
  std::string GetEnvironmentVar(const char *variableName)
  {
      std::array<char, MAX_PATH> oldValue;
      DWORD result =
          GetEnvironmentVariableA(variableName, oldValue.data(), static_cast<DWORD>(oldValue.size()));
      if (result == 0)
      {
          return std::string();
      }
      else
      {
          return std::string(oldValue.data());
      }
  }
  
  class Win32Library : public Library
  {
    public:
      Win32Library(const char *libraryName, SearchType searchType)
      {
          char buffer[MAX_PATH];
          int ret = snprintf(buffer, MAX_PATH, "%s.%s", libraryName, GetSharedLibraryExtension());
          if (ret > 0 && ret < MAX_PATH)
          {
              switch (searchType)
              {
                  case SearchType::ApplicationDir:
                      mModule = LoadLibraryA(buffer);
                      break;
                  case SearchType::SystemDir:
                      mModule = LoadLibraryExA(buffer, nullptr, LOAD_LIBRARY_SEARCH_SYSTEM32);
                      break;
              }
          }
      }
  
      ~Win32Library() override
      {
          if (mModule)
          {
              FreeLibrary(mModule);
          }
      }
  
      void *getSymbol(const char *symbolName) override
      {
          if (!mModule)
          {
              return nullptr;
          }
  
          return reinterpret_cast<void *>(GetProcAddress(mModule, symbolName));
      }
  
      void *getNative() const override { return reinterpret_cast<void *>(mModule); }
  
    private:
      HMODULE mModule = nullptr;
  };
  
  Library *OpenSharedLibrary(const char *libraryName, SearchType searchType)
  {
      return new Win32Library(libraryName, searchType);
  }
  }  // namespace angle
  

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