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/projects/cubeos/src_current/kernel/seminl.h File Reference

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Compounds
struct	sem_s
	contains all data about a semaphore. More...
Defines
#define	sem_signal(x)   sem_post(x)
	alias to sem_post(), for thomas. More...
#define	sem_trywait(x)   (x.c<0)
	checks, if a sem_wait() operation might block. More...
#define	sem_getvalue(x, i)   (*i=x.c)
	returns the semaphore counter. More...
Typedefs
typedef sem_s	sem_t
	contains all data about a semaphore. More...
Functions
void	sem_post (sem_t x)
	post operation on a semaphore. More...
void	sem_wait (sem_t x)
	wait operation on a semaphore. More...
int	sem_init (sem_t x, int i, int v)
	prepares a semaphore. More...
int	sem_destroy (sem_t x)
	destroys a semaphore and releases all threads waiting on it. More...

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Detailed Description

CubeOS/POSIX Semaphores: complex semaphores that are thread-aware

Definition in file seminl.h.

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Define Documentation

#define sem_getvalue (  x, i    )     (*i=x.c)

returns the semaphore counter. Definition at line 95 of file seminl.h.

#define sem_signal (  x    )     sem_post(x)

alias to sem_post(), for thomas. Definition at line 60 of file seminl.h.

#define sem_trywait (  x    )     (x.c<0)

checks, if a sem_wait() operation might block. Definition at line 94 of file seminl.h.

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