SDL_CreateSemaphore(3)

NAME
SDL_CreateSemaphore - Create a semaphore.

HEADER FILE
Defined in SDL3/SDL_mutex.h

SYNOPSIS
#include "SDL3/SDL.h"

SDL_Semaphore * SDL_CreateSemaphore(Uint32 initial_value);

DESCRIPTION
This function creates a new semaphore and initializes it with the value initial_value . Each wait operation on the semaphore will atomically decrement the semaphore value and potentially block if the semaphore value is 0. Each post operation will atomically increment the semaphore value and wake waiting threads and allow them to retry the wait operation.

FUNCTION PARAMETERS

initial_value
    the starting value of the semaphore.

RETURN VALUE
( SDL_Semaphore
 *) Returns a new semaphore or NULL on failure; call SDL_GetError () for more information.

AVAILABILITY
This function is available since SDL 3.2.0.

SEE ALSO
•(3), SDL_DestroySemaphore(3), •(3), SDL_SignalSemaphore(3), •(3), SDL_TryWaitSemaphore(3), •(3), SDL_GetSemaphoreValue(3), •(3), SDL_WaitSemaphore(3), •(3), SDL_WaitSemaphoreTimeout(3)