/* Define the TEMP_FAILURE_RETRY macro from GNU Libc.
 *
 * Copyright (C) 2005 Oskar Liljeblad
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
 */

#ifndef COMMON_TEMPFAILURE_H
#define COMMON_TEMPFAILURE_H

#include <unistd.h>
#include <errno.h>

/* TEMP_FAILURE_RETRY uses ({ }) syntax which is probably only supported
 * by GCC. That is why this file is not in Gnulib.
 */

#ifndef TEMP_FAILURE_RETRY
#define TEMP_FAILURE_RETRY(expression) \
    ({ \
        long int _result; \
        do _result = (long int) (expression); \
        while (_result == -1L && errno == EINTR); \
        _result; \
    })
#endif

#endif
