35 # include <sys/shm.h>
50  * SHM interface definitions
53 #define REFID           "SHM"   /* reference ID */
54 #define DESCRIPTION     "SHM/Shared memory interface"
111 	struct shmTime *shm;	/* pointer to shared memory segment */  member
145 		msyslog(LOG_ERR, "SHM shmget (unit %d): %m", unit);  in getShmTime()
150 		msyslog(LOG_ERR, "SHM shmat (unit %d): %m", unit);  in getShmTime()
168 		msyslog(LOG_ERR, "SHM name too long (unit %d)", unit);  in getShmTime()
173 			msyslog(LOG_ERR,"SHM InitializeSecurityDescriptor (unit %d): %m", unit);  in getShmTime()
177 			msyslog(LOG_ERR, "SHM SetSecurityDescriptorDacl (unit %d): %m", unit);  in getShmTime()
191 		msyslog(LOG_ERR, "SHM CreateFileMapping (unit %d): %s", unit, buf);  in getShmTime()
200 		msyslog(LOG_ERR,"SHM MapViewOfFile (unit %d): %s", unit, buf);  in getShmTime()
231 	up->shm = getShmTime(unit, up->forall);  in shm_start()
237 	if (up->shm != 0) {  in shm_start()
239 		up->shm->precision = PRECISION;  in shm_start()
240 		peer->precision = up->shm->precision;  in shm_start()
241 		up->shm->valid = 0;  in shm_start()
242 		up->shm->nsamples = NSAMPLES;  in shm_start()
306 	(void)shmdt((char *)up->shm);  in shm_shutdown()
310 	UnmapViewOfFile(up->shm);  in shm_shutdown()
345 	} else if (NULL == up->shm) { /* is this possible at all? */  in shm_poll()
346 		/* we're out of business without SHM access */  in shm_poll()
383 /* try to grab a sample from the specified SHM segment */  in shm_query()
386     volatile struct shmTime *shm = shm_in;  in shm_query()  local
392      * This is the main routine. It snatches the time from the shm  in shm_query()
395     if (shm == NULL) {  in shm_query()
410     if (shm->valid == 0) {  in shm_query()
415     cnt = shm->count;  in shm_query()
423     memcpy(&shmcopy, (void*)(uintptr_t)shm, sizeof(struct shmTime));  in shm_query()
424     shm->valid = 0;  in shm_query()
432     if (shmcopy.mode > 0 && cnt != shm->count) {  in shm_query()
514  * This tries to grab a sample from the SHM segment, filtering bad ones
525 	volatile struct shmTime *shm;  in shm_timer()  local
540 	if ((shm = up->shm) == NULL) {  in shm_timer()
543 		shm = up->shm = getShmTime(unit, up->forall);  in shm_timer()
544 		if (shm == NULL) {  in shm_timer()
545 			DPRINTF(1, ("%s: no SHM segment\n",  in shm_timer()
552 	status = shm_query(shm, &shm_stat);  in shm_timer()
556 	    DPRINTF(2, ("%s: SHM type %d sample\n",  in shm_timer()
563 	    DPRINTF(1, ("%s: SHM not ready\n",refnumtoa(&peer->srcadr)));  in shm_timer()
567 	    DPRINTF(1, ("%s: SHM type blooper, mode=%d\n",  in shm_timer()
568 			refnumtoa(&peer->srcadr), shm->mode));  in shm_timer()
570 	    msyslog (LOG_ERR, "SHM: bad mode found in shared memory: %d",  in shm_timer()
571 		     shm->mode);  in shm_timer()
576 	    msyslog (LOG_NOTICE, "SHM: access clash in shared memory");  in shm_timer()
580 	    DPRINTF(1, ("%s: internal error, unknown SHM fetch status\n",  in shm_timer()
582 	    msyslog (LOG_NOTICE, "internal error, unknown SHM fetch status");  in shm_timer()
609 		DPRINTF(1, ("%s:SHM stale/bad receive time, delay=%llds\n",  in shm_timer()
612 		msyslog (LOG_ERR, "SHM: stale/bad receive time, delay=%llds",  in shm_timer()
622 		DPRINTF(1, ("%s: SHM diff limit exceeded, delta=%llds\n",  in shm_timer()
625 		msyslog (LOG_ERR, "SHM: difference limit exceeded, delta=%llds\n",  in shm_timer()
631 	DPRINTF(2, ("%s: SHM feeding data\n",  in shm_timer()