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/*
This file is part of libmicrohttpd
Copyright (C) 2016 Karlson2k (Evgeny Grin)
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file microhttpd/mhd_itc.c
* @brief Implementation of inter-thread communication functions
* @author Karlson2k (Evgeny Grin)
* @author Christian Grothoff
*/
#include "mhd_itc.h"
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif /* HAVE_UNISTD_H */
#include <fcntl.h>
#include "internal.h"
#ifdef _MHD_ITC_EVENTFD
int
MHD_pipe_write_ (struct MHD_Pipe pip,
const void *ptr,
size_t sz)
{
uint64_t val = 1;
if (sizeof (val) !=
write (pip.event_fd,
&val,
sizeof (val)))
MHD_PANIC (_("Failed to write to eventfd\n"));
return sz;
}
#endif /* _MHD_ITC_EVENTFD */
#if defined(_MHD_ITC_PIPE)
#if !defined(_WIN32) || defined(__CYGWIN__)
/**
* Change itc FD options to be non-blocking.
*
* @param pip the pipe to manipulate
* @return non-zero if succeeded, zero otherwise
*/
int
MHD_itc_nonblocking_ (struct MHD_Pipe pip)
{
unsigned int i;
for (i=0;i<2;i++)
{
int flags;
flags = fcntl (pip.fd[i],
F_GETFL);
if (-1 == flags)
return 0;
if ( ((flags | O_NONBLOCK) != flags) &&
(0 != fcntl (pip.fd[i],
F_SETFL,
flags | O_NONBLOCK)) )
return 0;
}
return !0;
}
#endif /* !_WIN32 || __CYGWIN__ */
#endif /* _MHD_ITC_EVENTFD || _MHD_ITC_PIPE */
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