SEMAPHORE.H(3HEAD) Headers SEMAPHORE.H(3HEAD)
NAME
semaphore.h, semaphore - semaphores
SYNOPSIS
#include <
semaphore.h>
DESCRIPTION
The <
semaphore.h> header defines the
sem_t type, used in performing
semaphore operations. The semaphore can be implemented using a file
descriptor, in which case applications are able to open up at least a
total of {
OPEN_MAX} files and semaphores. The symbol
SEM_FAILED is
defined (see
sem_open(3C)).
Inclusion of the <
semaphore.h> header can make visible symbols
defined in the headers <
fcntl.h> and <
sys/types.h>. See
fcntl.h(3HEAD) and
types.h(3HEAD).
ATTRIBUTES
See
attributes(7) for descriptions of the following attributes:
+--------------------+-------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-------------------+
|Interface Stability | Committed |
+--------------------+-------------------+
|Standard | See
standards(7). |
+--------------------+-------------------+
SEE ALSO
sem_destroy(3C),
sem_getvalue(3C),
sem_init(3C),
sem_open(3C),
sem_post(3C),
sem_timedwait(3C),
sem_unlink(3C),
sem_wait(3C),
fcntl.h(3HEAD),
types.h(3HEAD),
attributes(7),
standards(7) February 5, 2008 SEMAPHORE.H(3HEAD)
