Function close_fd

src/operations.cpp:317–338

! * Closes a file descriptor and returns the result, similar to close(2). Unlike close(2), guarantees that the file descriptor is closed even if EINTR error happens. * * Some systems don't close the file descriptor in case if the thread is interrupted by a signal and close(2) returns EINTR. * Other (most) systems do close the file descriptor even when when close(2) returns EINTR, and attemptin

 * behaves differently between systems.
 */
inline int close_fd(int fd)
{
#if defined(hpux) || defined(_hpux) || defined(__hpux)
    int res;
    while (true)
    {
        res = ::close(fd);
        if (BOOST_UNLIKELY(res < 0))
        {
            int err = errno;
            if (err == EINTR)
                continue;
        }

        break;
    }

    return res;
#else
    return ::close(fd);
#endif
}

#if defined(BOOST_FILESYSTEM_HAS_STATX)