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 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