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6904101c44
== DETAILS Really simple code cleanup, because my editor flags trailing whitespaces and it's pretty annoying.
97 lines
2.3 KiB
C
97 lines
2.3 KiB
C
/*-------------------------------------------------------------
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semaphore.h -- Thread subsystem IV
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Copyright (C) 2004
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Michael Wiedenbauer (shagkur)
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Dave Murphy (WinterMute)
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any
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damages arising from the use of this software.
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Permission is granted to anyone to use this software for any
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purpose, including commercial applications, and to alter it and
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redistribute it freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you
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must not claim that you wrote the original software. If you use
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this software in a product, an acknowledgment in the product
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documentation would be appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and
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must not be misrepresented as being the original software.
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3. This notice may not be removed or altered from any source
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distribution.
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-------------------------------------------------------------*/
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#ifndef __SEMAPHORE_H__
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#define __SEMAPHORE_H__
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/*! \file semaphore.h
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\brief Thread subsystem IV
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*/
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#include <gctypes.h>
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#define LWP_SEM_NULL 0xffffffff
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*! \typedef u32 sem_t
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\brief typedef for the semaphore handle
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*/
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typedef u32 sem_t;
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/*! \fn s32 LWP_SemInit(sem_t *sem,u32 start,u32 max)
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\brief Initializes a semaphore.
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\param[out] sem pointer to a sem_t handle.
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\param[in] start start count of the semaphore
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\param[in] max maximum count of the semaphore
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\return 0 on success, <0 on error
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*/
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s32 LWP_SemInit(sem_t *sem,u32 start,u32 max);
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/*! \fn s32 LWP_SemDestroy(sem_t sem)
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\brief Close and destroy a semaphore, release all threads and handles locked on this semaphore.
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\param[in] sem handle to the sem_t structure.
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\return 0 on success, <0 on error
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*/
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s32 LWP_SemDestroy(sem_t sem);
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/*! \fn s32 LWP_SemWait(sem_t sem)
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\brief Count down semaphore counter and enter lock if counter <=0
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\param[in] sem handle to the sem_t structure.
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\return 0 on success, <0 on error
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*/
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s32 LWP_SemWait(sem_t sem);
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/*! \fn s32 LWP_SemPost(sem_t sem)
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\brief Count up semaphore counter and release lock if counter >0
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\param[in] sem handle to the sem_t structure.
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\return 0 on success, <0 on error
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*/
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s32 LWP_SemPost(sem_t sem);
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#ifdef __cplusplus
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}
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#endif
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#endif
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