File: eintr_retry.h

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/*
 * Copyright © 2013-2015  Rinat Ibragimov
 *
 * This file is part of FreshPlayerPlugin.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#ifndef FPP_EINTR_RETRY_H
#define FPP_EINTR_RETRY_H

#include <errno.h>

// helper macro to retry system call which returned EINTR
#define RETRY_ON_EINTR(x) ({                        \
    typeof(x) ___tmp_res;                           \
    do {                                            \
        ___tmp_res = (x);                           \
    } while (___tmp_res == -1 && errno == EINTR);   \
    ___tmp_res;                                     \
})

#endif // FPP_EINTR_RETRY_H