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Add EventSystem reference in Event and magic to ESInteral

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Abdelrahman Said
2025-01-04 21:48:22 +00:00
parent b20c68331d
commit d1a70ee6f4
3 changed files with 39 additions and 17 deletions
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49
src/event_system.c
View File

@@ -5,6 +5,10 @@
#include <stdbool.h>
#include <sys/mman.h>
#define MAGIC 0x4556535953
#define VALID_MAGIC(ESINT_PTR) (ESINT_PTR->magic == MAGIC)
#define INVALID_SYSTEM ((EventSystem){ .id = 0 })
#define INVALID_EVENT ((Event) { .id = 0 })
#define INVALID_LISTENER ((EventListener){ .event = INVALID_EVENT, .id = 0 })
@@ -15,6 +19,7 @@
typedef struct es_internal ESInternal;
struct es_internal {
u64 magic;
u64 alloc_size;
u64 event_capacity;
u64 event_count;
@@ -81,6 +86,7 @@ EventSystem es_init(u64 initial_event_capacity, u64 initial_listeners_capacity)
ESInternal *event_system = (ESInternal *)buffer;
event_system->magic = MAGIC;
event_system->alloc_size = alloc_size;
event_system->event_capacity = event_capacity;
event_system->event_count = 0;
@@ -116,6 +122,9 @@ void es_deinit(EventSystem *event_system) {
}
ESInternal *es = get_event_system_internal(*event_system);
if (!VALID_MAGIC(es)) {
return;
}
munmap(system, es->alloc_size);
@@ -129,8 +138,14 @@ Event es_register_event(EventSystem event_system) {
goto RETURN_EVENT;
}
ESInternal *es = get_event_system_internal(event_system);
EventSlot *event_slots_array = get_event_slots_array(es);
ESInternal *es = get_event_system_internal(event_system);
if (!VALID_MAGIC(es)) {
goto RETURN_EVENT;
}
event.system = event_system;
EventSlot *event_slots_array = get_event_slots_array(es);
if (es->free_count > 0) {
u64 *free_array = get_free_array(es);
@@ -155,35 +170,41 @@ RETURN_EVENT:
return event;
}
void es_deregister_event(EventSystem event_system, Event event) {
if (IS_INVALID_SYSTEM(event_system) || IS_INVALID_EVENT(event)) {
void es_deregister_event(EventSystem event_system, Event *event) {
if (IS_INVALID_SYSTEM(event_system) || IS_INVALID_EVENT((*event)) || event_system.id != event->system.id) {
return;
}
ESInternal *es = get_event_system_internal(event_system);
if (event.id > es->event_count) {
if (!VALID_MAGIC(es) || event->id > es->event_count) {
return;
}
EventSlot *event_slots_array = get_event_slots_array(es);
u64 *free_array = get_free_array(es);
event_slots_array[event.id].registered = false;
free_array[(es->free_count)++] = event.id;
event_slots_array[event->id].registered = false;
free_array[(es->free_count)++] = event->id;
if (event.id == es->event_count) {
if (event->id == es->event_count) {
es->event_count -= 1;
}
event->id = 0;
}
EventListener es_add_event_listener(EventSystem event_system, Event event, EventCallback callback) {
EventListener listener = INVALID_LISTENER;
if (IS_INVALID_SYSTEM(event_system) || IS_INVALID_EVENT(event) || !callback) {
if (IS_INVALID_SYSTEM(event_system) || IS_INVALID_EVENT(event) || event_system.id != event.system.id || !callback) {
goto RETURN_LISTENER;
}
ESInternal *es = get_event_system_internal(event_system);
ESInternal *es = get_event_system_internal(event_system);
if (!VALID_MAGIC(es)) {
goto RETURN_LISTENER;
}
EventInternal *ev = get_event(es, event);
if (ev->free_count > 0) {
@@ -215,12 +236,12 @@ RETURN_LISTENER:
}
void es_remove_event_listener(EventSystem event_system, EventListener listener) {
if (IS_INVALID_SYSTEM(event_system) || IS_INVALID_LISTENER(listener)) {
if (IS_INVALID_SYSTEM(event_system) || IS_INVALID_LISTENER(listener) || event_system.id != listener.event.system.id) {
return;
}
ESInternal *es = get_event_system_internal(event_system);
if (listener.event.id > es->event_count) {
if (!VALID_MAGIC(es) || listener.event.id > es->event_count) {
return;
}
@@ -243,12 +264,12 @@ void es_remove_event_listener(EventSystem event_system, EventListener listener)
}
void es_emit_event(EventSystem event_system, Event event, void *data) {
if (IS_INVALID_SYSTEM(event_system) || IS_INVALID_EVENT(event)) {
if (IS_INVALID_SYSTEM(event_system) || IS_INVALID_EVENT(event) || event_system.id != event.system.id) {
return;
}
ESInternal *es = get_event_system_internal(event_system);
if (event.id > es->event_count) {
if (!VALID_MAGIC(es) || event.id > es->event_count) {
return;
}

3
src/event_system.h
View File

@@ -16,6 +16,7 @@ struct event_system {
typedef struct event Event;
struct event {
EventSystem system;
u64 id;
};
@@ -30,7 +31,7 @@ typedef void (*EventCallback)(void *data);
EventSystem es_init(u64 initial_event_capacity, u64 initial_listeners_capacity);
void es_deinit(EventSystem *event_system);
Event es_register_event(EventSystem event_system);
void es_deregister_event(EventSystem event_system, Event event);
void es_deregister_event(EventSystem event_system, Event *event);
EventListener es_add_event_listener(EventSystem event_system, Event event, EventCallback callback);
void es_remove_event_listener(EventSystem event_system, EventListener listener);
void es_emit_event(EventSystem event_system, Event event, void *data);

4
src/main.c
View File

@@ -65,11 +65,11 @@ int main(void) {
EventListener listener = es_add_event_listener(es, extra_event, extra_event_handler);
es_emit_event(es, extra_event, NULL);
es_remove_event_listener(es, listener);
es_deregister_event(es, extra_event);
es_deregister_event(es, &extra_event);
for (int i = 0; i < COUNT_EVENTS; ++i) {
es_remove_event_listener(es, listeners[i]);
es_deregister_event(es, events[i]);
es_deregister_event(es, &events[i]);
}
es_deinit(&es);