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head/sys/boot/kshim/bsd_kernel.c
| Show First 20 Lines • Show All 132 Lines • ▼ Show 20 Lines | cv_wait(struct cv *cv, struct mtx *mtx) | ||||
| cv_timedwait(cv, mtx, -1); | cv_timedwait(cv, mtx, -1); | ||||
| } | } | ||||
| int | int | ||||
| cv_timedwait(struct cv *cv, struct mtx *mtx, int timo) | cv_timedwait(struct cv *cv, struct mtx *mtx, int timo) | ||||
| { | { | ||||
| int start = ticks; | int start = ticks; | ||||
| int delta; | int delta; | ||||
| int time = 0; | |||||
| if (cv->sleeping) | if (cv->sleeping) | ||||
| return (EWOULDBLOCK); /* not allowed */ | return (EWOULDBLOCK); /* not allowed */ | ||||
| cv->sleeping = 1; | cv->sleeping = 1; | ||||
| while (cv->sleeping) { | while (cv->sleeping) { | ||||
| if (timo >= 0) { | if (timo >= 0) { | ||||
| delta = ticks - start; | delta = ticks - start; | ||||
| if (delta >= timo || delta < 0) | if (delta >= timo || delta < 0) | ||||
| break; | break; | ||||
| } | } | ||||
| mtx_unlock(mtx); | mtx_unlock(mtx); | ||||
| usb_idle(); | usb_idle(); | ||||
| if (++time >= (1000000 / hz)) { | |||||
| time = 0; | |||||
| callout_process(1); | |||||
| } | |||||
| /* Sleep for 1 us */ | |||||
| delay(1); | |||||
| mtx_lock(mtx); | mtx_lock(mtx); | ||||
| } | } | ||||
| if (cv->sleeping) { | if (cv->sleeping) { | ||||
| cv->sleeping = 0; | cv->sleeping = 0; | ||||
| return (EWOULDBLOCK); /* not allowed */ | return (EWOULDBLOCK); /* not allowed */ | ||||
| } | } | ||||
| ▲ Show 20 Lines • Show All 1,076 Lines • Show Last 20 Lines | |||||