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)
	Data part of a static semaphore initializer.
#define	SEMAPHORE_DECL(name, n)
	Static semaphore initializer.

Typedefs
typedef struct ch_semaphore	semaphore_t
	Semaphore structure.

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

Detailed Description

Semaphores macros and structures.

Definition in file rt/include/chsem.h.