SEM_DESTROY(3) | Library Functions Manual | SEM_DESTROY(3) |
sem_destroy
—
#include <semaphore.h>
int
sem_destroy
(sem_t
*sem);
sem_destroy
() function destroys the unnamed
semaphore pointed to by sem. After a successful call to
sem_destroy
(), sem is unusable
until re-initialized by another call to sem_init
().
sem_destroy
() function returns the value 0 if
successful; otherwise the value -1 is returned and the global variable
errno is set to indicate the error.
sem_destroy
() will fail if:
sem_destroy
() conforms to ISO/IEC
9945-1:1996 (“POSIX.1”).
POSIX does not define the behavior of
sem_destroy
() if called while there are threads
blocked on sem, but this implementation is guaranteed
to return -1 and set errno to
EBUSY
if there are threads blocked on
sem.
January 22, 2003 | NetBSD 9.0 |