NAME

sem_trylock −  attempt to lock a semaphore

SYNOPSIS

#include <semaphore.h>
int sem_trylock(sem_t ∗sem)

DESCRIPTION

The function sem_trylock is not implemented in this release. 

RETURN VALUE

The function sem_trylock returns a value of -1 and sets errno to indicate an error. 

ERRORS

The function sem_trylock fails and sets errno to:

ENOSYS
This function is not supported by this implementation.

SEE ALSO

IEEE POSIX P1003.4 specification. 

  —  POSIX 1003.4 Extensions