kc3-lang/angle/src/common/system_utils.h

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• Hash : d33a2222
  Author :
  Date : 2021-04-26T16:56:15
  

  Upstream Apple's direct-to-Metal backend: compile libANGLE.
  
  This change is meant to merge the metal backend changes from Apple's
  direct-to-Metal backend. Taken from Kyle Piddington's CL:
  https://chromium-review.googlesource.com/c/angle/angle/+/2857366/
  The goal of this CL is to merge the metal backend code in a state
  that compiles, but not to switch the Metal backend over to using
  the direct-to-metal backend yet.
  
  Bug: angleproject:5505
  Bug: angleproject:6127
  Change-Id: If6783e06e0086b3a1dd25c6f53caca5cfc96cb86
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2950067
  Reviewed-by: Jonah Ryan-Davis <jonahr@google.com>
  Reviewed-by: Kenneth Russell <kbr@chromium.org>
  Commit-Queue: Jonah Ryan-Davis <jonahr@google.com>
  

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• src/common/system_utils.h

• //
  // Copyright 2014 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.h: declaration of OS-specific utility functions
  
  #ifndef COMMON_SYSTEM_UTILS_H_
  #define COMMON_SYSTEM_UTILS_H_
  
  #include "common/Optional.h"
  #include "common/angleutils.h"
  
  #include <string>
  
  namespace angle
  {
  std::string GetExecutableName();
  std::string GetExecutablePath();
  std::string GetExecutableDirectory();
  std::string GetModuleDirectory();
  const char *GetSharedLibraryExtension();
  const char *GetExecutableExtension();
  char GetPathSeparator();
  Optional<std::string> GetCWD();
  bool SetCWD(const char *dirName);
  bool SetEnvironmentVar(const char *variableName, const char *value);
  bool UnsetEnvironmentVar(const char *variableName);
  bool GetBoolEnvironmentVar(const char *variableName);
  std::string GetEnvironmentVar(const char *variableName);
  std::string GetEnvironmentVarOrUnCachedAndroidProperty(const char *variableName,
                                                         const char *propertyName);
  std::string GetEnvironmentVarOrAndroidProperty(const char *variableName, const char *propertyName);
  const char *GetPathSeparatorForEnvironmentVar();
  bool PrependPathToEnvironmentVar(const char *variableName, const char *path);
  bool IsDirectory(const char *filename);
  bool IsFullPath(std::string dirName);
  std::string GetRootDirectory();
  std::string ConcatenatePath(std::string first, std::string second);
  
  // Get absolute time in seconds.  Use this function to get an absolute time with an unknown origin.
  double GetCurrentTime();
  
  // Run an application and get the output.  Gets a nullptr-terminated set of args to execute the
  // application with, and returns the stdout and stderr outputs as well as the exit code.
  //
  // Pass nullptr for stdoutOut/stderrOut if you don't need to capture. exitCodeOut is required.
  //
  // Returns false if it fails to actually execute the application.
  bool RunApp(const std::vector<const char *> &args,
              std::string *stdoutOut,
              std::string *stderrOut,
              int *exitCodeOut);
  
  class Library : angle::NonCopyable
  {
    public:
      virtual ~Library() {}
      virtual void *getSymbol(const char *symbolName) = 0;
      virtual void *getNative() const                 = 0;
  
      template <typename FuncT>
      void getAs(const char *symbolName, FuncT *funcOut)
      {
          *funcOut = reinterpret_cast<FuncT>(getSymbol(symbolName));
      }
  };
  
  // Use SYSTEM_DIR to bypass loading ANGLE libraries with the same name as system DLLS
  // (e.g. opengl32.dll)
  enum class SearchType
  {
      // Try to find the library in the application directory
      ApplicationDir,
      // Load the library from the system directories
      SystemDir,
      // Get a reference to an already loaded shared library.
      AlreadyLoaded,
  };
  
  Library *OpenSharedLibrary(const char *libraryName, SearchType searchType);
  Library *OpenSharedLibraryWithExtension(const char *libraryName, SearchType searchType);
  
  // Returns true if the process is currently being debugged.
  bool IsDebuggerAttached();
  
  // Calls system APIs to break into the debugger.
  void BreakDebugger();
  }  // namespace angle
  
  #endif  // COMMON_SYSTEM_UTILS_H_
  

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