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// MIT License, Copyright (c) 2020 Marvin Borner
#include <assert.h>
#include <def.h>
#include <event.h>
#include <list.h>
#include <mem.h>
#include <proc.h>
#include <sys.h>
struct list *event_table[] = { [EVENT_KEYBOARD] = NULL, [EVENT_MOUSE] = NULL };
u32 event_register(enum message_type id, struct proc *proc)
{
assert(id < sizeof(event_table) / sizeof(*event_table));
if (event_table[id] == NULL)
event_table[id] = (struct list *)list_new();
struct event_descriptor *desc = malloc(sizeof(*desc));
desc->id = id;
desc->proc = proc;
list_add(event_table[id], (void *)desc);
return 0;
}
void event_unregister(enum message_type id, struct proc *proc)
{
assert(id < sizeof(event_table) / sizeof(*event_table));
struct event_descriptor *desc = malloc(sizeof(*desc));
desc->id = id;
desc->proc = proc;
struct node *iterator = event_table[id]->head;
do {
struct event_descriptor *desc_comp = iterator->data;
if (desc_comp->id == desc->id && desc_comp->proc == desc->proc)
list_remove(event_table[id], iterator);
} while ((iterator = iterator->next) != NULL);
}
u32 event_trigger(enum message_type id, void *data)
{
assert(id < sizeof(event_table) / sizeof(*event_table));
if (memcmp(event_table[id], 0, sizeof(struct list)) == 0 || !event_table[id]->head) {
printf("Event %d not mapped!\n", id);
return 1;
}
struct node *iterator = event_table[id]->head;
do {
proc_send(kernel_proc, ((struct event_descriptor *)iterator->data)->proc, id, data);
} while ((iterator = iterator->next) != NULL);
return 0;
}
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