(This is the documentation for SDL3, which is the current stable version. SDL2 was the previous version!)

SDL_SignalAsyncIOQueue

Wake up any threads that are blocking in SDL_WaitAsyncIOResult().

Header File

Syntax

void SDL_SignalAsyncIOQueue(SDL_AsyncIOQueue *queue);

Function Parameters

SDL_AsyncIOQueue *

queue

the async I/O task queue to signal.

Remarks

This will unblock any threads that are sleeping in a call to SDL_WaitAsyncIOResult for the specified queue, and cause them to return from that function.

This can be useful when destroying a queue to make sure nothing is touching it indefinitely. In this case, once this call completes, the caller should take measures to make sure any previously-blocked threads have returned from their wait and will not touch the queue again (perhaps by setting a flag to tell the threads to terminate and then using SDL_WaitThread() to make sure they've done so).

Thread Safety

It is safe to call this function from any thread.

Version

This function is available since SDL 3.2.0.