diff options
Diffstat (limited to 'sysdeps/mach/nanosleep.c')
| -rw-r--r-- | sysdeps/mach/nanosleep.c | 36 |
1 files changed, 23 insertions, 13 deletions
diff --git a/sysdeps/mach/nanosleep.c b/sysdeps/mach/nanosleep.c index 555251f842..b60a2179f6 100644 --- a/sysdeps/mach/nanosleep.c +++ b/sysdeps/mach/nanosleep.c @@ -18,16 +18,26 @@ #include <errno.h> #include <mach.h> -#include <sys/time.h> #include <time.h> #include <unistd.h> +# define timespec_sub(a, b, result) \ + do { \ + (result)->tv_sec = (a)->tv_sec - (b)->tv_sec; \ + (result)->tv_nsec = (a)->tv_nsec - (b)->tv_nsec; \ + if ((result)->tv_nsec < 0) { \ + --(result)->tv_sec; \ + (result)->tv_nsec += 1000000000; \ + } \ + } while (0) + int __libc_nanosleep (const struct timespec *requested_time, - struct timespec *remaining) + struct timespec *remaining) { mach_port_t recv; - struct timeval before, after; + struct timespec before; + error_t err; if (requested_time->tv_sec < 0 || ! valid_nanoseconds (requested_time->tv_nsec)) @@ -42,20 +52,20 @@ __libc_nanosleep (const struct timespec *requested_time, recv = __mach_reply_port (); - if (remaining && __gettimeofday (&before, NULL) < 0) - return -1; - error_t err = __mach_msg (NULL, MACH_RCV_MSG|MACH_RCV_TIMEOUT|MACH_RCV_INTERRUPT, - 0, 0, recv, ms, MACH_PORT_NULL); + if (remaining != 0) + __clock_gettime (CLOCK_REALTIME, &before); + + err = __mach_msg (NULL, MACH_RCV_MSG|MACH_RCV_TIMEOUT|MACH_RCV_INTERRUPT, + 0, 0, recv, ms, MACH_PORT_NULL); __mach_port_destroy (mach_task_self (), recv); if (err == EMACH_RCV_INTERRUPTED) { - if (remaining && __gettimeofday (&after, NULL) >= 0) + if (remaining != 0) { - struct timeval req_time, elapsed, rem; - TIMESPEC_TO_TIMEVAL (&req_time, requested_time); - timersub (&after, &before, &elapsed); - timersub (&req_time, &elapsed, &rem); - TIMEVAL_TO_TIMESPEC (&rem, remaining); + struct timespec after, elapsed; + __clock_gettime (CLOCK_REALTIME, &after); + timespec_sub (&after, &before, &elapsed); + timespec_sub (requested_time, &elapsed, remaining); } errno = EINTR; |