diff options
Diffstat (limited to 'src/lib9/sleep.c')
-rw-r--r-- | src/lib9/sleep.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/src/lib9/sleep.c b/src/lib9/sleep.c new file mode 100644 index 00000000..9cafdcf6 --- /dev/null +++ b/src/lib9/sleep.c @@ -0,0 +1,35 @@ +#include <u.h> +#define NOPLAN9DEFINES +#include <libc.h> +#include <sys/time.h> +#include <sched.h> + +int +p9sleep(long milli) +{ + struct timeval tv; + + if(milli == 0){ + sched_yield(); + return 0; + } + + tv.tv_sec = milli/1000; + tv.tv_usec = (milli%1000)*1000; + return select(0, 0, 0, 0, &tv); +} + +long +p9alarm(ulong milli) +{ + struct itimerval itv; + struct itimerval oitv; + + itv.it_interval.tv_sec = 0; + itv.it_interval.tv_usec = 0; + itv.it_value.tv_sec = milli/1000; + itv.it_value.tv_usec = (milli%1000)*1000; + if(setitimer(ITIMER_REAL, &itv, &oitv) < 0) + return -1; + return oitv.it_value.tv_sec*1000+oitv.it_value.tv_usec/1000; +} |