chsem.h File Reference

Semaphores macros and structures. More...

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Data Structures
struct	ch_semaphore
	Semaphore structure. More...

Macros
#define	_SEMAPHORE_DATA(name, n)   {_THREADS_QUEUE_DATA(name.queue), n}
	Data part of a static semaphore initializer. More...
#define	SEMAPHORE_DECL(name, n)   semaphore_t name = _SEMAPHORE_DATA(name, n)
	Static semaphore initializer. More...

Typedefs
typedef struct ch_semaphore	semaphore_t
	Semaphore structure. More...

Functions
void	chSemObjectInit (semaphore_t *sp, cnt_t n)
	Initializes a semaphore with the specified counter value. More...
void	chSemReset (semaphore_t *sp, cnt_t n)
	Performs a reset operation on the semaphore. More...
void	chSemResetI (semaphore_t *sp, cnt_t n)
	Performs a reset operation on the semaphore. More...
msg_t	chSemWait (semaphore_t *sp)
	Performs a wait operation on a semaphore. More...
msg_t	chSemWaitS (semaphore_t *sp)
	Performs a wait operation on a semaphore. More...
msg_t	chSemWaitTimeout (semaphore_t *sp, sysinterval_t timeout)
	Performs a wait operation on a semaphore with timeout specification. More...
msg_t	chSemWaitTimeoutS (semaphore_t *sp, sysinterval_t timeout)
	Performs a wait operation on a semaphore with timeout specification. More...
void	chSemSignal (semaphore_t *sp)
	Performs a signal operation on a semaphore. More...
void	chSemSignalI (semaphore_t *sp)
	Performs a signal operation on a semaphore. More...
void	chSemAddCounterI (semaphore_t *sp, cnt_t n)
	Adds the specified value to the semaphore counter. More...
msg_t	chSemSignalWait (semaphore_t *sps, semaphore_t *spw)
	Performs atomic signal and wait operations on two semaphores. More...
static void	chSemFastWaitI (semaphore_t *sp)
	Decreases the semaphore counter. More...
static void	chSemFastSignalI (semaphore_t *sp)
	Increases the semaphore counter. More...
static cnt_t	chSemGetCounterI (const semaphore_t *sp)
	Returns the semaphore counter current value. More...

Detailed Description

Semaphores macros and structures.

Definition in file chsem.h.