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

• Show log

  Commit

• Hash : 95a736bd
  Author :
  Date : 2019-10-09T10:26:25
  

  Reland "Add more test_utils functions."
  
  This is a reland of 5fcfcea4a9379633a83a67fc1d94938cb31f2a9c
  
  Re-land uses static linking with angle_util. The root cause
  of the CFI error wasn't solved. Static linking works around
  the problem by not using any export rules.
  
  Second re-land fixes missing imports for libEGL and libGLESv2
  static varieties.
  
  Original change's description:
  > Add more test_utils functions.
  >
  > Includes methods for creating temporary files, deleting files, and
  > reading files into a string. Also renames GetPathSeparator to mention
  > it's only used for environment variables. Includes a new virtual type
  > angle::Process that will be used to implement cross-platform async
  > Process launching for tests. Also includes a way to specify a custom
  > crash handler callback.
  >
  > Also adds a few unit tests for the new functionality. They are disabled
  > on Android because the functions are not needed by the new test runner.
  >
  > Bug: angleproject:3162
  > Change-Id: I3e2c2e9837608884c98379fa0f78c9ffbe158d73
  > Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1821940
  > Commit-Queue: Jamie Madill <jmadill@chromium.org>
  > Reviewed-by: Jonah Ryan-Davis <jonahr@google.com>
  
  Bug: chromium:1015810
  Bug: angleproject:3162
  Change-Id: I2a18b819b0f91df610ad12ffedea2b38349fe7cf
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1879859
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
  

Download

• 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 <sys/stat.h>
  #include <sys/types.h>
  #include <sys/wait.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 *GetPathSeparatorForEnvironmentVar()
  {
      return ":";
  }
  
  class PosixLibrary : public Library
  {
    public:
      PosixLibrary(const char *libraryName, SearchType searchType)
      {
          std::string directory;
          if (searchType == SearchType::ApplicationDir)
          {
              static int dummySymbol = 0;
              Dl_info dlInfo;
              if (dladdr(&dummySymbol, &dlInfo) != 0)
              {
                  std::string moduleName = dlInfo.dli_fname;
                  directory              = moduleName.substr(0, moduleName.find_last_of('/') + 1);
              }
          }
  
          std::string fullPath = directory + libraryName + "." + GetSharedLibraryExtension();
          mModule              = dlopen(fullPath.c_str(), 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, SearchType searchType)
  {
      return new PosixLibrary(libraryName, searchType);
  }
  
  bool IsDirectory(const char *filename)
  {
      struct stat st;
      int result = stat(filename, &st);
      return result == 0 && ((st.st_mode & S_IFDIR) == S_IFDIR);
  }
  
  bool IsDebuggerAttached()
  {
      // This could have a fuller implementation.
      // See https://cs.chromium.org/chromium/src/base/debug/debugger_posix.cc
      return false;
  }
  
  void BreakDebugger()
  {
      // This could have a fuller implementation.
      // See https://cs.chromium.org/chromium/src/base/debug/debugger_posix.cc
      abort();
  }
  }  // namespace angle
  

Download