83 lines
1.7 KiB
C
83 lines
1.7 KiB
C
#include "handler.h"
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#include "event.h"
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#include "database.h"
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#include <stdlib.h>
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#include <stdio.h>
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typedef void (*handler_function)(void *p, event e);
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struct handler_data {
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handler_function f;
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void *p;
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unsigned long id;
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};
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struct handler_list {
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struct handler_data *f;
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int size;
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int maxsize;
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};
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/* internal definition of an event handler */
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struct _event_handler {
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void *database;
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struct handler_list *events;
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unsigned long next_id;
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};
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void handle_event(event_handler *_h, event e)
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{
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struct _event_handler *h = _h;
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int i;
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for (i = 0; i < h->events[e.type].size; i++)
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h->events[e.type].f[i].f(h->events[e.type].f[i].p, e);
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}
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event_handler *new_handler(void *database)
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{
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struct _event_handler *ret = calloc(1, sizeof(struct _event_handler));
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if (ret == NULL) abort();
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ret->database = database;
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ret->events = calloc(number_of_ids(database), sizeof(struct handler_list));
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if (ret->events == NULL) abort();
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ret->next_id = 1;
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return ret;
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}
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unsigned long register_handler_function(event_handler *_h, int event_id,
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void (*f)(void *, event), void *p)
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{
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struct _event_handler *h = _h;
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unsigned long ret = h->next_id;
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struct handler_list *l;
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h->next_id++;
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if (h->next_id == 2UL * 1024 * 1024 * 1024)
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{ printf("%s:%d: this is bad...\n", __FILE__, __LINE__); abort(); }
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l = &h->events[event_id];
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if (l->size == l->maxsize) {
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l->maxsize += 16;
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l->f = realloc(l->f, l->maxsize * sizeof(struct handler_data));
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if (l->f == NULL) abort();
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}
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l->f[l->size].f = f;
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l->f[l->size].p = p;
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l->f[l->size].id = ret;
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l->size++;
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return ret;
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}
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void remove_handler_function(event_handler *h, int event_id,
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unsigned long handler_id)
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{
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printf("%s:%d: TODO\n", __FILE__, __LINE__);
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abort();
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}
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