NAME¶

SDL_RunOnMainThread - Call a function on the main thread during event processing.

HEADER FILE¶

Defined in SDL3/SDL_init.h

SYNOPSIS¶

#include "SDL3/SDL.h"

bool SDL_RunOnMainThread(SDL_MainThreadCallback callback, void *userdata, bool wait_complete);

DESCRIPTION¶

If this is called on the main thread, the callback is executed immediately. If this is called on another thread, this callback is queued for execution on the main thread during event processing.

Be careful of deadlocks when using this functionality. You should not have the main thread wait for the current thread while this function is being called with wait_complete true.

FUNCTION PARAMETERS¶

callback

the callback to call on the main thread.

userdata

a pointer that is passed to callback .

wait_complete

true to wait for the callback to complete, false to return immediately.

RETURN VALUE¶

Returns true on success or false on failure; call

SDL_GetError () for more information.

THREAD SAFETY¶

It is safe to call this function from any thread.

AVAILABILITY¶

This function is available since SDL 3.2.0.

SEE ALSO¶

•(3), SDL_IsMainThread(3)