View Source: SDL_CreateSemaphore(3) - Waikato Linux Users Group

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SDL_!CreateSemaphore
!!!SDL_!CreateSemaphore
NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
EXAMPLES
SEE ALSO
----
!!NAME


SDL_!CreateSemaphore- Creates a new semaphore and assigns an initial value to it.
!!SYNOPSIS


__#include
__


__SDL_sem *SDL_!CreateSemaphore__(__Uint32
initial_value__);
!!DESCRIPTION


__SDL_!CreateSemaphore()__ creates a new semaphore and
initializes it with the value __initial_value__. Each
locking operation on the semaphore by ''SDL_!SemWait'',
''SDL_!SemTryWait'' or ''SDL_!SemWaitTimeout'' will
atomically decrement the semaphore value. The locking
operation will be blocked if the semaphore value is not
positive (greater than zero). Each unlock operation by
''SDL_!SemPost'' will atomically increment the semaphore
value.
!!RETURN VALUE


Returns a pointer to an initialized semaphore or __NULL__
if there was an error.
!!EXAMPLES


SDL_sem *my_sem;
my_sem = SDL_!CreateSemaphore(INITIAL_SEM_VALUE);
if (my_sem == NULL) {
return CREATE_SEM_FAILED;
}
!!SEE ALSO


__SDL_!DestroySemaphore__, __SDL_!SemWait__,
__SDL_!SemTryWait__, __SDL_!SemWaitTimeout__,
__SDL_!SemPost__, __SDL_!SemValue__
----

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Last edited on Monday, June 3, 2002 6:53:41 pm by "perry"

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