1 /*-
2 * Copyright (c) 2006-2016 Maxim Sobolev <sobomax@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 #include <sys/types.h>
28 #include <sys/param.h>
29 #include <sys/lock.h>
30 #include <sys/mutex.h>
31 #include <sys/bio.h>
32 #include <sys/proc.h>
33 #include <sys/sched.h>
34 #include <sys/kthread.h>
35 #include <sys/malloc.h>
36
37 #include <geom/uzip/g_uzip.h>
38 #include <geom/uzip/g_uzip_softc.h>
39 #include <geom/uzip/g_uzip_wrkthr.h>
40
41 void
g_uzip_wrkthr(void * arg)42 g_uzip_wrkthr(void *arg)
43 {
44 struct g_uzip_softc *sc;
45 struct bio *bp;
46
47 sc = (struct g_uzip_softc *)arg;
48 thread_lock(curthread);
49 sched_prio(curthread, PRIBIO);
50 thread_unlock(curthread);
51
52 for (;;) {
53 mtx_lock(&sc->queue_mtx);
54 if (sc->wrkthr_flags & GUZ_SHUTDOWN) {
55 sc->wrkthr_flags |= GUZ_EXITING;
56 mtx_unlock(&sc->queue_mtx);
57 kproc_exit(0);
58 }
59 bp = bioq_takefirst(&sc->bio_queue);
60 if (!bp) {
61 msleep(sc, &sc->queue_mtx, PRIBIO | PDROP,
62 "wrkwait", 0);
63 continue;
64 }
65 mtx_unlock(&sc->queue_mtx);
66 sc->uzip_do(sc, bp);
67 }
68 }
69