g_uzip_wrkthr.c

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    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/cdefs.h>
   28 __FBSDID("$FreeBSD$");
   29 
   30 #include <sys/types.h>
   31 #include <sys/param.h>
   32 #include <sys/lock.h>
   33 #include <sys/mutex.h>
   34 #include <sys/bio.h>
   35 #include <sys/proc.h>
   36 #include <sys/sched.h>
   37 #include <sys/kthread.h>
   38 #include <sys/malloc.h>
   39 
   40 #include <geom/uzip/g_uzip.h>
   41 #include <geom/uzip/g_uzip_softc.h>
   42 #include <geom/uzip/g_uzip_wrkthr.h>
   43 
   44 void
   45 g_uzip_wrkthr(void *arg)
   46 {
   47         struct g_uzip_softc *sc;
   48         struct bio *bp;
   49 
   50         sc = (struct g_uzip_softc *)arg;
   51         thread_lock(curthread);
   52         sched_prio(curthread, PRIBIO);
   53         thread_unlock(curthread);
   54 
   55         for (;;) {
   56                 mtx_lock(&sc->queue_mtx);
   57                 if (sc->wrkthr_flags & GUZ_SHUTDOWN) {
   58                         sc->wrkthr_flags |= GUZ_EXITING;
   59                         mtx_unlock(&sc->queue_mtx);
   60                         kproc_exit(0);
   61                 }
   62                 bp = bioq_takefirst(&sc->bio_queue);
   63                 if (!bp) {
   64                         msleep(sc, &sc->queue_mtx, PRIBIO | PDROP,
   65                             "wrkwait", 0);
   66                         continue;
   67                 }
   68                 mtx_unlock(&sc->queue_mtx);
   69                 sc->uzip_do(sc, bp);
   70         }
   71 }

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FreeBSD/Linux Kernel Cross Reference sys/geom/uzip/g_uzip_wrkthr.c

FreeBSD/Linux Kernel Cross Reference
sys/geom/uzip/g_uzip_wrkthr.c