ltsleep.c revision 1.1.2.4
1 1.1.2.4 joerg /* $NetBSD: ltsleep.c,v 1.1.2.4 2007/11/11 16:48:45 joerg Exp $ */ 2 1.1.2.2 joerg 3 1.1.2.2 joerg /* 4 1.1.2.2 joerg * Copyright (c) 2007 Antti Kantee. All Rights Reserved. 5 1.1.2.2 joerg * 6 1.1.2.2 joerg * Development of this software was supported by the 7 1.1.2.2 joerg * Finnish Cultural Foundation. 8 1.1.2.2 joerg * 9 1.1.2.2 joerg * Redistribution and use in source and binary forms, with or without 10 1.1.2.2 joerg * modification, are permitted provided that the following conditions 11 1.1.2.2 joerg * are met: 12 1.1.2.2 joerg * 1. Redistributions of source code must retain the above copyright 13 1.1.2.2 joerg * notice, this list of conditions and the following disclaimer. 14 1.1.2.2 joerg * 2. Redistributions in binary form must reproduce the above copyright 15 1.1.2.2 joerg * notice, this list of conditions and the following disclaimer in the 16 1.1.2.2 joerg * documentation and/or other materials provided with the distribution. 17 1.1.2.2 joerg * 18 1.1.2.2 joerg * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 19 1.1.2.2 joerg * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 20 1.1.2.2 joerg * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 21 1.1.2.2 joerg * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 1.1.2.2 joerg * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 1.1.2.2 joerg * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 24 1.1.2.2 joerg * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 1.1.2.2 joerg * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 1.1.2.2 joerg * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 1.1.2.2 joerg * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 1.1.2.2 joerg * SUCH DAMAGE. 29 1.1.2.2 joerg */ 30 1.1.2.2 joerg 31 1.1.2.2 joerg #include <sys/param.h> 32 1.1.2.2 joerg #include <sys/proc.h> 33 1.1.2.2 joerg #include <sys/queue.h> 34 1.1.2.2 joerg 35 1.1.2.2 joerg #include "rump_private.h" 36 1.1.2.4 joerg #include "rumpuser.h" 37 1.1.2.2 joerg 38 1.1.2.2 joerg struct ltsleeper { 39 1.1.2.2 joerg wchan_t id; 40 1.1.2.2 joerg kcondvar_t cv; 41 1.1.2.2 joerg LIST_ENTRY(ltsleeper) entries; 42 1.1.2.2 joerg }; 43 1.1.2.2 joerg 44 1.1.2.2 joerg static LIST_HEAD(, ltsleeper) sleepers = LIST_HEAD_INITIALIZER(sleepers); 45 1.1.2.2 joerg static kmutex_t sleepermtx; 46 1.1.2.2 joerg 47 1.1.2.2 joerg int 48 1.1.2.2 joerg ltsleep(wchan_t ident, pri_t prio, const char *wmesg, int timo, 49 1.1.2.2 joerg volatile struct simplelock *slock) 50 1.1.2.2 joerg { 51 1.1.2.2 joerg struct ltsleeper lts; 52 1.1.2.4 joerg int iplrecurse; 53 1.1.2.2 joerg 54 1.1.2.2 joerg lts.id = ident; 55 1.1.2.2 joerg cv_init(<s.cv, NULL); 56 1.1.2.2 joerg 57 1.1.2.2 joerg mutex_enter(&sleepermtx); 58 1.1.2.2 joerg LIST_INSERT_HEAD(&sleepers, <s, entries); 59 1.1.2.4 joerg 60 1.1.2.4 joerg /* release spl */ 61 1.1.2.4 joerg iplrecurse = rumpuser_whatis_ipl(); 62 1.1.2.4 joerg while (iplrecurse--) 63 1.1.2.4 joerg rumpuser_rw_exit(&rumpspl); 64 1.1.2.4 joerg 65 1.1.2.3 jmcneill /* protected by sleepermtx */ 66 1.1.2.2 joerg if (slock) 67 1.1.2.2 joerg simple_unlock(slock); 68 1.1.2.2 joerg cv_wait(<s.cv, &sleepermtx); 69 1.1.2.4 joerg 70 1.1.2.4 joerg /* retake ipl */ 71 1.1.2.4 joerg iplrecurse = rumpuser_whatis_ipl(); 72 1.1.2.4 joerg while (iplrecurse--) 73 1.1.2.4 joerg rumpuser_rw_enter(&rumpspl, 0); 74 1.1.2.4 joerg 75 1.1.2.2 joerg LIST_REMOVE(<s, entries); 76 1.1.2.2 joerg mutex_exit(&sleepermtx); 77 1.1.2.2 joerg 78 1.1.2.3 jmcneill cv_destroy(<s.cv); 79 1.1.2.3 jmcneill 80 1.1.2.2 joerg if (slock && (prio & PNORELOCK) == 0) 81 1.1.2.2 joerg simple_lock(slock); 82 1.1.2.2 joerg 83 1.1.2.2 joerg return 0; 84 1.1.2.2 joerg } 85 1.1.2.2 joerg 86 1.1.2.2 joerg void 87 1.1.2.2 joerg wakeup(wchan_t ident) 88 1.1.2.2 joerg { 89 1.1.2.2 joerg struct ltsleeper *ltsp; 90 1.1.2.2 joerg 91 1.1.2.2 joerg mutex_enter(&sleepermtx); 92 1.1.2.2 joerg LIST_FOREACH(ltsp, &sleepers, entries) 93 1.1.2.2 joerg if (ltsp->id == ident) 94 1.1.2.2 joerg cv_signal(<sp->cv); 95 1.1.2.2 joerg mutex_exit(&sleepermtx); 96 1.1.2.2 joerg } 97 1.1.2.2 joerg 98 1.1.2.2 joerg void 99 1.1.2.2 joerg rump_sleepers_init() 100 1.1.2.2 joerg { 101 1.1.2.2 joerg 102 1.1.2.2 joerg mutex_init(&sleepermtx, MUTEX_DEFAULT, 0); 103 1.1.2.2 joerg } 104
Indexes created Wed Oct 01 07:09:59 GMT 2025