add io_uring

1 files changed, 14 insertions, 5 deletions

diff --git a/include/kpl/object.h b/include/kpl/object.h
index 751088d..1f3ec04 100644
--- a/include/kpl/object.h
+++ b/include/kpl/object.h
@@ -48,9 +48,18 @@ inline void kpl_object_queue_enqueue(kpl_object_queue *object_queue, void *objec
  */
 void *kpl_object_queue_dequeue(kpl_object_queue *object_queue);
 
-typedef void kpl_task_fn(kpl_task *task, kpl_env *env);
+typedef void kpl_task_fn(kpl_object_task *task, kpl_env *env);
 
-typedef struct _kpl_task {
-    KPL_OBJECT_HEADER(_kpl_task);
-    // TODO
-} kpl_task;
+/*
+ * Coroutine state object
+ */
+typedef struct _kpl_object_task {
+    KPL_OBJECT_HEADER(_kpl_object_task);
+    _Atomic bool join_ready __attribute__((aligned(4))); // shares cache line with variables_size
+    int32_t variables_size, io_res; // variables_size is set once then only read
+    uint32_t io_flags; // io_res and io_flags are set by io_uring complete
+    kpl_object_task *join;
+    kpl_task_fn *task_fn;
+    kpl_result result;
+    kpl_class variables[]; // a task has no distinction between an argument or a local, both live here
+} kpl_object_task;