Add sdl3_asyncio.odin

vendor/sdl3/sdl3_asyncio.odin

@@ -0,0 +1,45 @@
+package sdl3
+
+import "core:c"
+
+AsyncIO :: struct {}
+
+AsyncIOTaskType :: enum c.int {
+	READ,  /**< A read operation. */
+	WRITE, /**< A write operation. */
+	CLOSE, /**< A close operation. */
+}
+
+AsyncIOResult :: enum c.int {
+	COMPLETE, /**< request was completed without error */
+	FAILURE,  /**< request failed for some reason; check SDL_GetError()! */
+	CANCELED, /**< request was canceled before completing. */
+}
+
+AsyncIOOutcome :: struct {
+	asyncio:           ^AsyncIO,        /**< what generated this task. This pointer will be invalid if it was closed! */
+	type:              AsyncIOTaskType, /**< What sort of task was this? Read, write, etc? */
+	result:            AsyncIOResult,   /**< the result of the work (success, failure, cancellation). */
+	buffer:            rawptr,          /**< buffer where data was read/written. */
+	offset:            Uint64,          /**< offset in the SDL_AsyncIO where data was read/written. */
+	bytes_requested:   Uint64,          /**< number of bytes the task was to read/write. */
+	bytes_transferred: Uint64,          /**< actual number of bytes that were read/written. */
+	userdata:          rawptr,          /**< pointer provided by the app when starting the task */
+}
+
+AsyncIOQueue :: struct {}
+
+@(default_calling_convention="c", link_prefix="SDL_")
+foreign lib {
+	AsyncIOFromFile     :: proc(file: cstring, mode: cstring) -> ^AsyncIO ---
+	GetAsyncIOSize      :: proc(asyncio: ^AsyncIO) -> Sint64 ---
+	ReadAsyncIO         :: proc(asyncio: ^AsyncIO, ptr: rawptr, offset, size: Uint64, queue: ^AsyncIOQueue, userdata: rawptr) -> bool ---
+	WriteAsyncIO        :: proc(asyncio: ^AsyncIO, ptr: rawptr, offset, size: Uint64, queue: ^AsyncIOQueue, userdata: rawptr) -> bool ---
+	CloseAsyncIO        :: proc(asyncio: ^AsyncIO, flush: bool, queue: ^AsyncIOQueue, userdata: rawptr) -> bool ---
+	CreateAsyncIOQueue  :: proc() -> ^AsyncIOQueue ---
+	DestroyAsyncIOQueue :: proc(queue: ^AsyncIOQueue) ---
+	GetAsyncIOResult    :: proc(queue: ^AsyncIOQueue, outcome: ^AsyncIOOutcome) -> bool ---
+	WaitAsyncIOResult   :: proc(queue: ^AsyncIOQueue, outcome: ^AsyncIOOutcome, timeoutMS: Sint32) -> bool ---
+	SignalAsyncIOQueue  :: proc(queue: ^AsyncIOQueue) ---
+	LoadFileAsync       :: proc(file: cstring, queue: ^AsyncIOQueue, userdata: rawptr) -> bool ---
+}