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| author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2010-09-10 02:34:19 +0000 |
|---|---|---|
| committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2010-09-10 02:34:19 +0000 |
| commit | 1adb6100a9921ce95d6f774af0281bca7680ff87 (patch) | |
| tree | a4101caa1c8f88234caf46583b1fc8262f60033c /nuttx/sched/sem_holder.c | |
| parent | 17b2b1655f4ed281bf42caa80d2eb878df408695 (diff) | |
| download | px4-nuttx-1adb6100a9921ce95d6f774af0281bca7680ff87.tar.gz px4-nuttx-1adb6100a9921ce95d6f774af0281bca7680ff87.tar.bz2 px4-nuttx-1adb6100a9921ce95d6f774af0281bca7680ff87.zip | |
Fix race condition when semaphore wait is interrupted by a signl
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2935 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/sched/sem_holder.c')
| -rw-r--r-- | nuttx/sched/sem_holder.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/nuttx/sched/sem_holder.c b/nuttx/sched/sem_holder.c index c2e7d3447..6db6867c8 100644 --- a/nuttx/sched/sem_holder.c +++ b/nuttx/sched/sem_holder.c @@ -1,7 +1,7 @@ /**************************************************************************** * sched/sem_holder.c * - * Copyright (C) 2009 Gregory Nutt. All rights reserved. + * Copyright (C) 2009-2010 Gregory Nutt. All rights reserved. * Author: Gregory Nutt <spudmonkey@racsa.co.cr> * * Redistribution and use in source and binary forms, with or without @@ -818,7 +818,8 @@ void sem_restorebaseprio(FAR _TCB *stcb, FAR sem_t *sem) * Description: * Called from sem_post() after a thread that was waiting for a semaphore * count was awakened because of a signal and the semaphore wait has been - * canceled. + * canceled. This function restores the correct thread priority of each + * holder of the semaphore. * * Parameters: * sem - A reference to the semaphore no longer being waited for |