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author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2007-02-17 23:21:28 +0000 |
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committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2007-02-17 23:21:28 +0000 |
commit | e3940eb2080711edac189cca3f642ee89dc215f2 (patch) | |
tree | 1c390958fae49e34dce698b175487e6d4681e540 /nuttx/sched/sem_internal.h | |
parent | 2223612deb2cc6322992f8595b6d6f86fcb53ae1 (diff) | |
download | px4-nuttx-e3940eb2080711edac189cca3f642ee89dc215f2.tar.gz px4-nuttx-e3940eb2080711edac189cca3f642ee89dc215f2.tar.bz2 px4-nuttx-e3940eb2080711edac189cca3f642ee89dc215f2.zip |
NuttX RTOS
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/sched/sem_internal.h')
-rw-r--r-- | nuttx/sched/sem_internal.h | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/nuttx/sched/sem_internal.h b/nuttx/sched/sem_internal.h new file mode 100644 index 000000000..460b358fc --- /dev/null +++ b/nuttx/sched/sem_internal.h @@ -0,0 +1,99 @@ +/************************************************************ + * sem_internal.h + * + * Copyright (C) 2007 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * 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 + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ************************************************************/ + +#ifndef __SEM_INTERNAL_H +#define __SEM_INTERNAL_H + +/************************************************************ + * Included Files + ************************************************************/ + +#include <sys/types.h> +#include <semaphore.h> +#include <sched.h> +#include <queue.h> +#include <nuttx/compiler.h> + +/************************************************************ + * Definitions + ************************************************************/ + +/************************************************************ + * Public Type Declarations + ************************************************************/ + +/* This is the named semaphore structure */ + +struct nsem_s +{ + struct nsem_s *flink; /* Forward link */ + struct nsem_s *blink; /* Backward link */ + uint16 nconnect; /* Number of connections to semaphore */ + char *name; /* Semaphore name (NULL if un-named) */ + boolean unlinked; /* TRUE if the semaphore has been unlinked */ + sem_t sem; /* The semaphore itself */ +}; +typedef struct nsem_s nsem_t; + +/************************************************************ + * Public Variables + ************************************************************/ + +/* This is a list of dyanamically allocated named semaphores */ + +extern dq_queue_t g_nsems; + +/************************************************************ + * Public Function Prototypes + ************************************************************/ + +#ifdef __cplusplus +#define EXTERN extern "C" +extern "C" { +#else +#define EXTERN extern +#endif + +EXTERN void weak_function sem_initialize(void); +EXTERN void sem_waitirq(_TCB *wtcb); +EXTERN nsem_t *sem_findnamed(const char *name); + +#undef EXTERN +#ifdef __cplusplus +} +#endif + +#endif /* __SEM_INTERNAL_H */ + |