2 * SPDX-License-Identifier: BSD-2-Clause
4 * Copyright (c) 2022 Jessica Clarke <jrtc27@FreeBSD.org>
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 #define KILL_TIMEOUT 10
31 * NB: Most of these do not need to be volatile, but a handful are used in
32 * signal handler contexts, so for simplicity we make them all volatile rather
33 * than duplicate the implementation.
40 pipe_barrier_init(struct pipe_barrier *p)
48 for (i = 0; i < 2; ++i)
55 pipe_barrier_wait(struct pipe_barrier *p)
64 ret = read(fd, &temp, 1);
65 } while (ret == -1 && errno == EINTR);
70 pipe_barrier_ready(struct pipe_barrier *p)
80 pipe_barrier_destroy_impl(struct pipe_barrier *p, int i)
92 pipe_barrier_destroy_wait(struct pipe_barrier *p)
94 pipe_barrier_destroy_impl(p, 0);
98 pipe_barrier_destroy_ready(struct pipe_barrier *p)
100 pipe_barrier_destroy_impl(p, 1);
104 pipe_barrier_destroy(struct pipe_barrier *p)
106 pipe_barrier_destroy_wait(p);
107 pipe_barrier_destroy_ready(p);
110 void reproduce_signal_death(int sig);