2 * Copyright 2000, International Business Machines Corporation and others.
5 * This software has been released under the terms of the IBM Public
6 * License. For details, see the LICENSE file in the top-level source
7 * directory or online at http://www.openafs.org/dl/license10.html
10 #include <afsconfig.h>
11 #include "afs/param.h"
14 #include "afs/sysincludes.h" /* Standard vendor system headers */
15 #include "afsincludes.h" /* Afs-based standard headers */
16 #include "afs/afs_stats.h" /* afs statistics */
21 afs_osi_InitWaitHandle(struct afs_osi_WaitHandle *achandle)
23 AFS_STATCNT(osi_InitWaitHandle);
24 achandle->proc = (caddr_t) 0;
29 afs_osi_CancelWait(struct afs_osi_WaitHandle *achandle)
33 AFS_STATCNT(osi_CancelWait);
34 proc = achandle->proc;
37 achandle->proc = (caddr_t) 0; /* so dude can figure out he was signalled */
38 afs_osi_Wakeup(&waitV);
42 * Waits for data on ahandle, or ams ms later. ahandle may be null.
43 * Returns 0 if timeout and EINTR if signalled.
46 afs_osi_Wait(afs_int32 ams, struct afs_osi_WaitHandle *ahandle, int aintok)
49 afs_int32 endTime, tid;
51 AFS_STATCNT(osi_Wait);
52 endTime = osi_Time() + (ams / 1000);
54 ahandle->proc = (caddr_t) curthreadp;
58 code = afs_osi_TimedSleep(&waitV, ams, aintok);
61 break; /* if something happened, quit now */
62 /* if we we're cancelled, quit now */
63 if (ahandle && (ahandle->proc == (caddr_t) 0)) {
64 /* we've been signalled */
67 } while (osi_Time() < endTime);
74 afs_event_t *afs_evhasht[AFS_EVHASHSIZE]; /* Hash table for events */
75 #if (_MIPS_SZPTR == 64)
76 #define afs_evhash(event) (afs_uint32) ((((long)event)>>3) & (AFS_EVHASHSIZE-1));
78 #define afs_evhash(event) (afs_uint32) ((((long)event)>>2) & (AFS_EVHASHSIZE-1));
80 int afs_evhashcnt = 0;
82 /* Get and initialize event structure corresponding to lwp event (i.e. address)
85 afs_getevent(char *event)
87 afs_event_t *evp, *newp = 0;
91 hashcode = afs_evhash(event);
92 evp = afs_evhasht[hashcode];
94 if (evp->event == event) {
98 if (evp->refcount == 0)
103 newp = (afs_event_t *) osi_AllocSmallSpace(sizeof(afs_event_t));
105 newp->next = afs_evhasht[hashcode];
106 afs_evhasht[hashcode] = newp;
107 cv_init(&newp->cond, "event cond var", CV_DEFAULT, NULL);
115 /* Release the specified event */
116 #define relevent(evp) ((evp)->refcount--)
120 afs_osi_Sleep(void *event)
122 struct afs_event *evp;
125 evp = afs_getevent(event);
127 while (seq == evp->seq) {
129 cv_wait(&evp->cond, &afs_global_lock);
135 afs_osi_SleepSig(void *event)
137 afs_osi_Sleep(event);
141 /* afs_osi_TimedSleep
144 * event - event to sleep on
145 * ams --- max sleep time in milliseconds
146 * aintok - 1 if should sleep interruptibly
148 * Returns 0 if timeout and EINTR if signalled.
151 afs_osi_TimedSleep(void *event, afs_int32 ams, int aintok)
154 struct afs_event *evp;
155 struct timespec ticks;
157 ticks.tv_sec = ams / 1000;
158 ticks.tv_nsec = (ams - (ticks.tv_sec * 1000)) * 1000000;
160 evp = afs_getevent(event);
165 (&evp->cond, AFSD_PRI(), &afs_global_lock, 0, 0, &ticks,
166 (struct timespec *)0))
168 AFS_MUTEX_ENTER(&afs_global_lock);
170 cv_timedwait(&evp->cond, &afs_global_lock, ticks);
179 afs_osi_Wakeup(void *event)
182 struct afs_event *evp;
184 evp = afs_getevent(event);
185 if (evp->refcount > 1) {
187 cv_broadcast(&evp->cond);