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author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2012-07-14 19:30:31 +0000 |
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committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2012-07-14 19:30:31 +0000 |
commit | e135573acc348649e767ca67a1ec189fe4e0fcda (patch) | |
tree | b34f7d2914cba8aeb9311c5bae3771af40054640 /nuttx/sched/mq_timedreceive.c | |
parent | d76fa866ad009d65396acf1aa08fcffd3b4b041e (diff) | |
download | px4-nuttx-e135573acc348649e767ca67a1ec189fe4e0fcda.tar.gz px4-nuttx-e135573acc348649e767ca67a1ec189fe4e0fcda.tar.bz2 px4-nuttx-e135573acc348649e767ca67a1ec189fe4e0fcda.zip |
Fix STM32 F2/F4 SDIO clocking; Clean-up files in sched/ directory
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4940 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/sched/mq_timedreceive.c')
-rw-r--r-- | nuttx/sched/mq_timedreceive.c | 60 |
1 files changed, 27 insertions, 33 deletions
diff --git a/nuttx/sched/mq_timedreceive.c b/nuttx/sched/mq_timedreceive.c index 856c08be5..0df904830 100644 --- a/nuttx/sched/mq_timedreceive.c +++ b/nuttx/sched/mq_timedreceive.c @@ -2,7 +2,7 @@ * sched/mq_timedreceive.c * * Copyright (C) 2007-2009, 2011 Gregory Nutt. All rights reserved. - * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * Author: Gregory Nutt <gnutt@nuttx.org> * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions @@ -47,6 +47,7 @@ #include <mqueue.h> #include <wdog.h> #include <debug.h> + #include <nuttx/arch.h> #include "os_internal.h" @@ -74,7 +75,7 @@ ****************************************************************************/ /**************************************************************************** - * Function: mq_rcvtimeout + * Name: mq_rcvtimeout * * Description: * This function is called if the timeout elapses before the message queue @@ -96,15 +97,14 @@ static void mq_rcvtimeout(int argc, uint32_t pid) FAR _TCB *wtcb; irqstate_t saved_state; - /* Disable interrupts. This is necessary because an - * interrupt handler may attempt to send a message while we are - * doing this. + /* Disable interrupts. This is necessary because an interrupt handler may + * attempt to send a message while we are doing this. */ saved_state = irqsave(); - /* Get the TCB associated with this pid. It is possible that - * task may no longer be active when this watchdog goes off. + /* Get the TCB associated with this pid. It is possible that task may no + * longer be active when this watchdog goes off. */ wtcb = sched_gettcb((pid_t)pid); @@ -130,35 +130,30 @@ static void mq_rcvtimeout(int argc, uint32_t pid) ****************************************************************************/ /**************************************************************************** - * Function: mq_timedreceive + * Name: mq_timedreceive * * Description: - * This function receives the oldest of the highest - * priority messages from the message queue specified by - * "mqdes." If the size of the buffer in bytes (msglen) is - * less than the "mq_msgsize" attribute of the message - * queue, mq_timedreceive will return an error. Otherwise, the - * selected message is removed from the queue and copied to - * "msg." + * This function receives the oldest of the highest priority messages from + * the message queue specified by "mqdes." If the size of the buffer in + * bytes (msglen) is less than the "mq_msgsize" attribute of the message + * queue, mq_timedreceive will return an error. Otherwise, the selected + * message is removed from the queue and copied to "msg." * - * If the message queue is empty and O_NONBLOCK was not - * set, mq_timedreceive() will block until a message is added - * to the message queue (or until a timeout occurs). If more - * than one task is waiting to receive a message, only the - * task with the highest priority that has waited the longest - * will be unblocked. + * If the message queue is empty and O_NONBLOCK was not set, + * mq_timedreceive() will block until a message is added to the message + * queue (or until a timeout occurs). If more than one task is waiting + * to receive a message, only the task with the highest priority that has + * waited the longest will be unblocked. * - * mq_timedreceive() behaves just like mq_receive(), except - * that if the queue is empty and the O_NONBLOCK flag is not - * enabled for the message queue description, then abstime - * points to a structure which specifies a ceiling on the time - * for which the call will block. This ceiling is an absolute - * timeout in seconds and nanoseconds since the Epoch (midnight + * mq_timedreceive() behaves just like mq_receive(), except that if the + * queue is empty and the O_NONBLOCK flag is not enabled for the message + * queue description, then abstime points to a structure which specifies a + * ceiling on the time for which the call will block. This ceiling is an + * absolute timeout in seconds and nanoseconds since the Epoch (midnight * on the morning of 1 January 1970). * - * If no message is available, and the timeout has already - * expired by the time of the call, mq_timedreceive() returns - * immediately. + * If no message is available, and the timeout has already expired by the + * time of the call, mq_timedreceive() returns immediately. * * Parameters: * mqdes - Message Queue Descriptor @@ -168,9 +163,8 @@ static void mq_rcvtimeout(int argc, uint32_t pid) * abstime - the absolute time to wait until a timeout is declared. * * Return Value: - * One success, the length of the selected message in bytes.is - * returned. On failure, -1 (ERROR) is returned and the errno - * is set appropriately: + * One success, the length of the selected message in bytes is returned. + * On failure, -1 (ERROR) is returned and the errno is set appropriately: * * EAGAIN The queue was empty, and the O_NONBLOCK flag was set * for the message queue description referred to by 'mqdes'. |