SDL_AsyncIOTaskType.3type - Man Page

#include <SDL3/SDL_asyncio.h>

typedef enum SDL_AsyncIOTaskType
{
    SDL_ASYNCIO_TASK_READ,   /**< A read operation. */
    SDL_ASYNCIO_TASK_WRITE,  /**< A write operation. */
    SDL_ASYNCIO_TASK_CLOSE   /**< A close operation. */
} SDL_AsyncIOTaskType;

This enum is available since SDL 3.2.0.