text: /*
   * Copyright (C) 2013 Nokia Corporation and/or its subsidiary(-ies).
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
   * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
   * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
   * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
   * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
   * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #ifndef UniStdExtras_h
  #define UniStdExtras_h
  
  #include <errno.h>
  #include <unistd.h>
  
  namespace WTF {
  
  WTF_EXPORT_PRIVATE bool setCloseOnExec(int fileDescriptor);
  WTF_EXPORT_PRIVATE int dupCloseOnExec(int fileDescriptor);
  
  inline int closeWithRetry(int fileDescriptor)
  {
      int ret;
  #if OS(LINUX)
      // Workaround for the Linux behavior of closing the descriptor
      // unconditionally, even if the close() call is interrupted.
      // See https://bugs.webkit.org/show_bug.cgi?id=117266 for more
      // details.
      if ((ret = close(fileDescriptor)) == -1 && errno == EINTR)
          return 0;
  #else
      while ((ret = close(fileDescriptor)) == -1 && errno == EINTR) { }
  #endif
      return ret;
  }
  
  WTF_EXPORT_PRIVATE bool setNonBlock(int fileDescriptor);
  
  } // namespace WTF
  
  using WTF::closeWithRetry;
  using WTF::dupCloseOnExec;
  using WTF::setCloseOnExec;
  using WTF::setNonBlock;
  
  #endif // UniStdExtras_h
  