45 lines
994 B
C
45 lines
994 B
C
// SPDX-License-Identifier: GPL-2.0
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//
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// waiter-poll.c - Waiter for event notification by poll(2).
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//
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// Copyright (c) 2018 Takashi Sakamoto <o-takashi@sakamocchi.jp>
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//
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// Licensed under the terms of the GNU General Public License, version 2.
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#include "waiter.h"
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#include "misc.h"
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#include <stdlib.h>
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#include <errno.h>
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#include <poll.h>
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static int poll_prepare(struct waiter_context *waiter ATTRIBUTE_UNUSED)
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{
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// Nothing to do because an instance of waiter has required data.
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return 0;
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}
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static int poll_wait_event(struct waiter_context *waiter, int timeout_msec)
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{
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int err;
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err = poll(waiter->pfds, waiter->pfd_count, timeout_msec);
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if (err < 0)
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return -errno;
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return err;
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}
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static void poll_release(struct waiter_context *waiter ATTRIBUTE_UNUSED)
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{
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// Nothing to do because an instance of waiter has required data.
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return;
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}
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const struct waiter_data waiter_poll = {
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.ops = {
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.prepare = poll_prepare,
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.wait_event = poll_wait_event,
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.release = poll_release,
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},
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};
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