diff options
Diffstat (limited to 'sys/kern/kern_et.c')
| -rw-r--r-- | sys/kern/kern_et.c | 51 |
1 files changed, 19 insertions, 32 deletions
diff --git a/sys/kern/kern_et.c b/sys/kern/kern_et.c index 3156c81..472db79 100644 --- a/sys/kern/kern_et.c +++ b/sys/kern/kern_et.c @@ -1,5 +1,5 @@ /*- - * Copyright (c) 2010 Alexander Motin <mav@FreeBSD.org> + * Copyright (c) 2010-2013 Alexander Motin <mav@FreeBSD.org> * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -62,6 +62,7 @@ et_register(struct eventtimer *et) et->et_quality); } } + KASSERT(et->et_start, ("et_register: timer has no start function")); et->et_sysctl = SYSCTL_ADD_NODE(NULL, SYSCTL_STATIC_CHILDREN(_kern_eventtimer_et), OID_AUTO, et->et_name, CTLFLAG_RW, 0, "event timer description"); @@ -159,43 +160,29 @@ et_init(struct eventtimer *et, et_event_cb_t *event, * period - period of subsequent periodic ticks. */ int -et_start(struct eventtimer *et, - struct bintime *first, struct bintime *period) +et_start(struct eventtimer *et, sbintime_t first, sbintime_t period) { if (!et->et_active) return (ENXIO); - if (first == NULL && period == NULL) - return (EINVAL); - if ((et->et_flags & ET_FLAGS_PERIODIC) == 0 && - period != NULL) - return (ENODEV); - if ((et->et_flags & ET_FLAGS_ONESHOT) == 0 && - period == NULL) - return (ENODEV); - if (first != NULL) { - if (first->sec < et->et_min_period.sec || - (first->sec == et->et_min_period.sec && - first->frac < et->et_min_period.frac)) - first = &et->et_min_period; - if (first->sec > et->et_max_period.sec || - (first->sec == et->et_max_period.sec && - first->frac > et->et_max_period.frac)) - first = &et->et_max_period; + KASSERT(period >= 0, ("et_start: negative period")); + KASSERT((et->et_flags & ET_FLAGS_PERIODIC) || period == 0, + ("et_start: period specified for oneshot-only timer")); + KASSERT((et->et_flags & ET_FLAGS_ONESHOT) && period == 0, + ("et_start: period not specified for periodic-only timer")); + if (period != 0) { + if (period < et->et_min_period) + period = et->et_min_period; + else if (period > et->et_max_period) + period = et->et_max_period; } - if (period != NULL) { - if (period->sec < et->et_min_period.sec || - (period->sec == et->et_min_period.sec && - period->frac < et->et_min_period.frac)) - period = &et->et_min_period; - if (period->sec > et->et_max_period.sec || - (period->sec == et->et_max_period.sec && - period->frac > et->et_max_period.frac)) - period = &et->et_max_period; + if (period == 0 || first != 0) { + if (first < et->et_min_period) + first = et->et_min_period; + else if (first > et->et_max_period) + first = et->et_max_period; } - if (et->et_start) - return (et->et_start(et, first, period)); - return (0); + return (et->et_start(et, first, period)); } /* Stop event timer hardware. */ |
