7 the regents of the university of michigan
10 permission is granted to use, copy, create derivative works
11 and redistribute this software and such derivative works
12 for any purpose, so long as the name of the university of
13 michigan is not used in any advertising or publicity
14 pertaining to the use or distribution of this software
15 without specific, written prior authorization. if the
16 above copyright notice or any other identification of the
17 university of michigan is included in any copy of any
18 portion of this software, then the disclaimer below must
21 this software is provided as is, without representation
22 from the university of michigan as to its fitness for any
23 purpose, and without warranty by the university of
24 michigan of any kind, either express or implied, including
25 without limitation the implied warranties of
26 merchantability and fitness for a particular purpose. the
27 regents of the university of michigan shall not be liable
28 for any damages, including special, indirect, incidental, or
29 consequential damages, with respect to any claim arising
30 out of or in connection with the use of the software, even
31 if it has been or is hereafter advised of the possibility of
36 * Copyright 2000, International Business Machines Corporation and others.
37 * All Rights Reserved.
39 * This software has been released under the terms of the IBM Public
40 * License. For details, see the LICENSE file in the top-level source
41 * directory or online at http://www.openafs.org/dl/license10.html
44 #include <afsconfig.h>
45 #include "afs/param.h"
48 #include "afs/sysincludes.h" /* Standard vendor system headers */
49 #include "afs/afsincludes.h" /* Afs-based standard headers */
50 #include "afs/afs_stats.h" /* afs statistics */
65 afs_osi_SetTime(osi_timeval_t * atv)
67 printf("afs attempted to set clock; use \"afsd -nosettime\"\n");
72 afs_osi_CancelWait(struct afs_osi_WaitHandle *achandle)
76 AFS_STATCNT(osi_CancelWait);
77 proc = achandle->proc;
80 achandle->proc = NULL;
85 * Waits for data on ahandle, or ams ms later. ahandle may be null.
86 * Returns 0 if timeout and EINTR if signalled.
89 afs_osi_Wait(afs_int32 ams, struct afs_osi_WaitHandle *ahandle, int aintok)
92 struct timeval atv, now, endTime;
94 AFS_STATCNT(osi_Wait);
96 atv.tv_sec = ams / 1000;
97 atv.tv_usec = (ams % 1000) * 1000;
99 timeradd(&atv, &now, &endTime);
102 ahandle->proc = (caddr_t) curproc;
107 timersub(&endTime, &now, &atv);
108 timo = atv.tv_sec * hz + atv.tv_usec * hz / 1000000 + 1;
110 code = tsleep(&waitV, PCATCH | PVFS, "afs_W1", timo);
112 code = (code == EWOULDBLOCK) ? 0 : EINTR;
114 tsleep(&waitV, PVFS, "afs_W2", timo);
116 /* if we were cancelled, quit now */
117 if (ahandle && (ahandle->proc == NULL)) {
118 /* we've been signalled */
122 } while (timercmp(&now, &endTime, <));
129 * All this gluck should probably also be replaced with CVs.
131 typedef struct afs_event {
132 struct afs_event *next; /* next in hash chain */
133 char *event; /* lwp event: an address */
134 int refcount; /* Is it in use? */
135 int seq; /* Sequence number: this is incremented
136 * by wakeup calls; wait will not return until
142 afs_event_t *afs_evhasht[HASHSIZE]; /* Hash table for events */
143 #define afs_evhash(event) (afs_uint32) ((((long)event)>>2) & (HASHSIZE-1));
144 int afs_evhashcnt = 0;
146 /* Get and initialize event structure corresponding to lwp event (i.e. address)
149 afs_getevent(char *event)
151 afs_event_t *evp, *newp = 0;
155 hashcode = afs_evhash(event);
156 evp = afs_evhasht[hashcode];
158 if (evp->event == event) {
162 if (evp->refcount == 0)
167 newp = (afs_event_t *) osi_AllocSmallSpace(sizeof(afs_event_t));
169 newp->next = afs_evhasht[hashcode];
170 afs_evhasht[hashcode] = newp;
178 /* Release the specified event */
179 #define relevent(evp) ((evp)->refcount--)
182 afs_osi_TimedSleep(void *event, afs_int32 ams, int aintok)
185 struct afs_event *evp;
189 evp = afs_getevent(event);
193 prio = PCATCH | PPAUSE;
196 ticks = (ams * afs_hz) / 1000;
197 code = tsleep(event, prio, "afs_osi_TimedSleep", ticks);
206 afs_osi_Sleep(void *event)
210 tsleep(event, PVFS, "afsslp", 0);
215 afs_osi_SleepSig(void *event)
217 afs_osi_Sleep(event);
222 afs_osi_Wakeup(void *event)