README.md

@@ -12,9 +12,9 @@ Testing some (potentially stupid 😅) ideas for a generic event system implment
     - [x] ~~Register a event new when not out of capacity and no free events exist~~
     - [x] ~~Re-allocate to add more events when out of capacity~~
 - [x] ~~Implement removing a previously registered event~~
-- [x] ~~Implement adding new event listeners~~
+- [ ] Implement adding new event listeners
     - [x] ~~Re-use a free slot if one exists~~
     - [x] ~~Register a new listeners when not out of capacity and no free listeners exist~~
-    - [x] ~~Re-allocate to add more listeners when out of capacity~~
+    - [ ] Re-allocate to add more listeners when out of capacity
 - [x] ~~Implement removing an existing listener~~
 - [x] ~~Implement emitting an event~~

src/event_system.c

@@ -54,7 +54,6 @@ internal void          *alloc(u64 size);
 internal ESInternal    *get_event_system_internal(EventSystem event_system);
 internal EventSlot     *get_event_slots_array(const ESInternal *es);
 internal u64           *get_free_array(const ESInternal *es);
-internal void          reallocate_system(EventSystem *event_system, ESInternal *es);
 internal void          copy_event_data(const ESInternal *src, ESInternal *dst);
 internal EventInternal *get_event(const ESInternal *es, Event event);
 internal EventInternal *get_event_from_offset(const ESInternal *es, u64 offset);
@@ -173,7 +172,18 @@ Event es_register_event(EventSystem *event_system) {
   }
 
   if (es->event_count >= es->event_capacity) {
-    reallocate_system(event_system, es);
+    u64 new_callback_capacity    = get_largest_capacity(es);
+    EventSystem event_system_new = es_init(es->event_capacity, new_callback_capacity);
+    ESInternal  *es_new          = get_event_system_internal(event_system_new);
+
+    es_new->id          = es->id;
+    es_new->event_count = es->event_count;
+
+    copy_event_data(es, es_new);
+
+    es_deinit(event_system);
+    event_system->id = (u64)es_new;
+    es = es_new;
   }
 
   event.id     = ++(es->event_count);
@@ -197,14 +207,10 @@ void es_deregister_event(EventSystem event_system, Event *event) {
 
   EventSlot *event_slots_array = get_event_slots_array(es);
   u64 *free_array              = get_free_array(es);
-  EventInternal *ev            = get_event(es, *event);
 
   event_slots_array[event->id].registered = false;
   free_array[(es->free_count)++]         = event->id;
 
-  ev->count      = 0;
-  ev->free_count = 0;
-
   if (event->id == es->event_count) {
     es->event_count -= 1;
   }
@@ -239,8 +245,8 @@ EventListener es_add_event_listener(EventSystem *event_system, Event event, Even
   }
 
   if (ev->count >= ev->capacity) {
-    reallocate_system(event_system, es);
-    ev = get_event(es, event);
+    // TODO (Abdelrahman): Handle reallocating when out of callbacks
+    goto RETURN_LISTENER;
   }
 
   u64 id = ++(ev->count);
@@ -321,21 +327,6 @@ internal u64 *get_free_array(const ESInternal *es) {
   return (u64 *)((uptr)es + es->free_offset);
 }
 
-internal void reallocate_system(EventSystem *event_system, ESInternal *es) {
-  u64 new_callback_capacity    = get_largest_capacity(es);
-  EventSystem event_system_new = es_init(es->event_capacity, new_callback_capacity);
-  ESInternal  *es_new          = get_event_system_internal(event_system_new);
-
-  es_new->id          = es->id;
-  es_new->event_count = es->event_count;
-
-  copy_event_data(es, es_new);
-
-  es_deinit(event_system);
-  event_system->id = event_system_new.id;
-  es = es_new;
-}
-
 internal void copy_event_data(const ESInternal *src, ESInternal *dst) {
   EventSlot *slots_src = get_event_slots_array(src);
   EventSlot *slots_dst = get_event_slots_array(dst);

src/main.c

@@ -37,7 +37,7 @@ int main(void) {
   EventListener listeners[COUNT_EVENTS] = {0};
   EventCallback callbacks[COUNT_EVENTS] = {window_event_handler, keyboard_event_handler, mouse_event_handler};
 
-  EventSystem es = es_init(COUNT_EVENTS, 4);
+  EventSystem es = es_init(COUNT_EVENTS, 64);
 
   for (int i = 0; i < COUNT_EVENTS; ++i) {
     events[i]    = es_register_event(&es);
@@ -71,18 +71,10 @@ int main(void) {
     es_register_event(&es);
   }
 
-  printf("AFTER REALLOCATION WHEN OUT OF EVENTS\n\n");
   es_emit_event(es, events[EVENT_WINDOW],   (void *)&window_event);
   es_emit_event(es, events[EVENT_KEYBOARD], (void *)&keyboard_event);
   es_emit_event(es, events[EVENT_MOUSE],    (void *)&mouse_event);
 
-  for (int i = 0; i < 20; ++i) {
-    es_add_event_listener(&es, events[EVENT_WINDOW], extra_event_handler);
-  }
-
-  printf("AFTER REALLOCATION WHEN OUT OF CALLBACKS\n\n");
-  es_emit_event(es, events[EVENT_WINDOW], (void *)&window_event);
-
   for (int i = 0; i < COUNT_EVENTS; ++i) {
     es_remove_event_listener(es, listeners[i]);
     es_deregister_event(es, &events[i]);