diff options
Diffstat (limited to 'nuttx/sched/sig_timedwait.c')
| -rw-r--r-- | nuttx/sched/sig_timedwait.c | 29 |
1 files changed, 25 insertions, 4 deletions
diff --git a/nuttx/sched/sig_timedwait.c b/nuttx/sched/sig_timedwait.c index 1b8dfd162..f8c619b21 100644 --- a/nuttx/sched/sig_timedwait.c +++ b/nuttx/sched/sig_timedwait.c @@ -38,6 +38,7 @@ ****************************************************************************/ #include <nuttx/config.h> +#include <nuttx/compiler.h> #include <stdint.h> #include <string.h> @@ -119,6 +120,10 @@ static void sig_timeout(int argc, uint32_t itcb) u.wtcb->sigunbinfo.si_signo = SIG_WAIT_TIMEOUT; u.wtcb->sigunbinfo.si_code = SI_TIMER; u.wtcb->sigunbinfo.si_value.sival_int = 0; +#ifdef CONFIG_SCHED_HAVE_PARENT + u.wtcb->sigunbinfo.si_pid = 0; /* Not applicable */ + u.wtcb->sigunbinfo.si_status = OK; +#endif up_unblock_task(u.wtcb); } } @@ -223,7 +228,7 @@ int sigtimedwait(FAR const sigset_t *set, FAR struct siginfo *info, /* The return value is the number of the signal that awakened us */ - ret = info->si_signo; + ret = sigpend->info.si_signo; } /* We will have to wait for a signal to be posted to this task. */ @@ -238,10 +243,25 @@ int sigtimedwait(FAR const sigset_t *set, FAR struct siginfo *info, if (timeout) { - /* Convert the timespec to milliseconds */ + /* Convert the timespec to system clock ticks, making sure that + * the resultint delay is greater than or equal to the requested + * time in nanoseconds. + */ - waitticks = MSEC2TICK(timeout->tv_sec * MSEC_PER_SEC - + timeout->tv_nsec / NSEC_PER_MSEC); +#ifdef CONFIG_HAVE_LONG_LONG + uint64_t waitticks64 = ((uint64_t)timeout->tv_sec * NSEC_PER_SEC + + (uint64_t)timeout->tv_nsec + NSEC_PER_TICK - 1) / + NSEC_PER_TICK; + DEBUGASSERT(waitticks64 <= UINT32_MAX); + waitticks = (uint32_t)waitticks64; +#else + uint32_t waitmsec; + + DEBUGASSERT(timeout->tv_sec < UINT32_MAX / MSEC_PER_SEC); + waitmsec = timeout->tv_sec * MSEC_PER_SEC + + (timeout->tv_nsec + NSEC_PER_MSEC - 1) / NSEC_PER_MSEC; + waitticks = (waitmsec + MSEC_PER_TICK - 1) / MSEC_PER_TICK; +#endif /* Create a watchdog */ @@ -326,6 +346,7 @@ int sigtimedwait(FAR const sigset_t *set, FAR struct siginfo *info, { memcpy(info, &rtcb->sigunbinfo, sizeof(struct siginfo)); } + irqrestore(saved_state); } |