diff options
Diffstat (limited to 'nuttx/sched/sig_timedwait.c')
| -rw-r--r-- | nuttx/sched/sig_timedwait.c | 103 |
1 files changed, 49 insertions, 54 deletions
diff --git a/nuttx/sched/sig_timedwait.c b/nuttx/sched/sig_timedwait.c index 78fc9c28a..0fe35a069 100644 --- a/nuttx/sched/sig_timedwait.c +++ b/nuttx/sched/sig_timedwait.c @@ -1,7 +1,7 @@ -/************************************************************ - * sig_timedwait.c +/**************************************************************************** + * sched/sig_timedwait.c * - * Copyright (C) 2007 Gregory Nutt. All rights reserved. + * Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved. * Author: Gregory Nutt <spudmonkey@racsa.co.cr> * * Redistribution and use in source and binary forms, with or without @@ -14,7 +14,7 @@ * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. - * 3. Neither the name Gregory Nutt nor the names of its contributors may be + * 3. Neither the name NuttX nor the names of its contributors may be * used to endorse or promote products derived from this software * without specific prior written permission. * @@ -31,11 +31,11 @@ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * - ************************************************************/ + ****************************************************************************/ -/************************************************************ +/**************************************************************************** * Included Files - ************************************************************/ + ****************************************************************************/ #include <sys/types.h> #include <string.h> @@ -50,40 +50,40 @@ #include "sig_internal.h" #include "clock_internal.h" -/************************************************************ +/**************************************************************************** * Definitions - ************************************************************/ + ****************************************************************************/ -/************************************************************ +/**************************************************************************** * Private Type Declarations - ************************************************************/ + ****************************************************************************/ -/************************************************************ +/**************************************************************************** * Global Variables - ************************************************************/ + ****************************************************************************/ -/************************************************************ +/**************************************************************************** * Private Variables - ************************************************************/ + ****************************************************************************/ -/************************************************************ +/**************************************************************************** * Private Functionss - ************************************************************/ + ****************************************************************************/ -/************************************************************ +/**************************************************************************** * Function: sig_timeout * * Description: * A timeout elapsed while waiting for signals to be queued. - ************************************************************/ + * + ****************************************************************************/ -static void sig_timeout(int argc, uint32 itcb, ...) +static void sig_timeout(int argc, uint32 itcb) { - /* On many small machines, pointers are encoded and cannot - * be simply cast from uint32 to _TCB*. The following - * union works around this (see wdogparm_t). This odd - * logic could be conditioned on CONFIG_CAN_CAST_POINTERS, - * but it is not too bad in any case. + /* On many small machines, pointers are encoded and cannot be simply cast + * from uint32 to _TCB*. The following union works around this + * (see wdogparm_t). This odd logic could be conditioned on + * CONFIG_CAN_CAST_POINTERS, but it is not too bad in any case. */ union @@ -105,37 +105,34 @@ static void sig_timeout(int argc, uint32 itcb, ...) if (u.wtcb->task_state == TSTATE_WAIT_SIG) { - u.wtcb->sigunbinfo.si_signo = ERROR; - u.wtcb->sigunbinfo.si_code = SI_TIMER; + u.wtcb->sigunbinfo.si_signo = ERROR; + u.wtcb->sigunbinfo.si_code = SI_TIMER; u.wtcb->sigunbinfo.si_value.sival_int = 0; up_unblock_task(u.wtcb); } } -/************************************************************ +/**************************************************************************** * Public Functions - ************************************************************/ + ****************************************************************************/ -/************************************************************ +/**************************************************************************** * Function: sigtimedwait * * Description: - * This function selects the pending signal set specified - * by the argument set. If multiple signals are pending - * in set, it will remove and return the lowest numbered - * one. If no signals in set are pending at the time of - * the call, the calling process will be suspended until - * one of the signals in set becomes pending, OR until - * the process is interrupted by an unblocked signal, OR - * until the time interval specified by timeout (if any), - * has expired. If timeout is NULL, then the timeout - * interval is forever. + * This function selects the pending signal set specified by the argument + * set. If multiple signals are pending in set, it will remove and return + * the lowest numbered one. If no signals in set are pending at the time + * of the call, the calling process will be suspended until one of the + * signals in set becomes pending, OR until the process is interrupted by + * an unblocked signal, OR until the time interval specified by timeout + * (if any), has expired. If timeout is NULL, then the timeout interval + * is forever. * - * If the info argument is non-NULL, the selected signal - * number is stored in the si_signo member and the cause - * of the signal is store in the si_code emember. The - * content of si_value is only meaningful if the signal was - * generated by sigqueue(). + * If the info argument is non-NULL, the selected signal number is stored + * in the si_signo member and the cause of the signal is store in the + * si_code emember. The content of si_value is only meaningful if the + * signal was generated by sigqueue(). * * The following values for si_code are defined in signal.h: * SI_USER - Signal sent from kill, raise, or abort @@ -151,15 +148,15 @@ static void sig_timeout(int argc, uint32 itcb, ...) * timeout - The amount of time to wait * * Return Value: - * Signal number that cause the wait to be terminated, otherwise - * -1 (ERROR) is returned. + * Signal number that cause the wait to be terminated, otherwise -1 (ERROR) + * is returned. * * Assumptions: * - ************************************************************/ + ****************************************************************************/ -int sigtimedwait(const sigset_t *set, struct siginfo *info, - const struct timespec *timeout) +int sigtimedwait(FAR const sigset_t *set, FAR struct siginfo *info, + FAR const struct timespec *timeout) { FAR _TCB *rtcb = (FAR _TCB*)g_readytorun.head; sigset_t intersection; @@ -242,12 +239,11 @@ int sigtimedwait(const sigset_t *set, struct siginfo *info, */ wdparm_t wdparm; - wdparm.pvarg = (void*)rtcb; + wdparm.pvarg = (FAR void*)rtcb; /* Start the watchdog */ - wd_start(wdog, waitticks, (wdentry_t)sig_timeout, - 1, wdparm.dwarg); + wd_start(wdog, waitticks, (wdentry_t)sig_timeout, 1, wdparm.dwarg); /* Now wait for either the signal or the watchdog */ @@ -290,4 +286,3 @@ int sigtimedwait(const sigset_t *set, struct siginfo *info, return ret; } - |