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#ifndef PK_EV_H
#define PK_EV_H
#include <stdint.h>
struct pk_ev_mgr;
typedef uint64_t pk_ev_id_T;
struct pk_ev_mgr *pk_ev_create();
void pk_ev_destroy(struct pk_ev_mgr *evmgr);
typedef void (pk_ev_cb)();
bool pk_ev_register_ev(struct pk_ev_mgr *evmgr, pk_ev_id_T evid);
bool pk_ev_register_cb(struct pk_ev_mgr *evmgr, pk_ev_id_T evid, pk_ev_cb *cb);
void pk_ev_emit(struct pk_ev_mgr *evmgr, pk_ev_id_T evid);
#endif /* PK_EV_H */
#ifdef PK_IMPL_EV
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#ifndef PK_EV_MAX_COUNT
# define PK_EV_MAX_COUNT 16
#endif
#ifndef PK_EV_MAX_CB_COUNT
# define PK_EV_MAX_CB_COUNT 8
#endif
struct pk_ev {
pk_ev_id_T evid;
pk_ev_cb *cb[PK_EV_MAX_CB_COUNT];
uint8_t n_cb;
};
struct pk_ev_mgr {
struct pk_ev ev[PK_EV_MAX_COUNT];
uint8_t n_ev;
};
inline struct pk_ev_mgr*
pk_ev_create()
{
struct pk_ev_mgr *mgr = (struct pk_ev_mgr*)malloc(sizeof(struct pk_ev_mgr));
if (mgr == NULL) return NULL;
memset(mgr, 0, sizeof(struct pk_ev_mgr));
return mgr;
}
inline void
pk_ev_destroy(struct pk_ev_mgr *evmgr)
{
assert(evmgr != NULL);
memset(evmgr, 0, sizeof(struct pk_ev_mgr));
free(evmgr);
}
inline bool
pk_ev_register_ev(struct pk_ev_mgr *evmgr, pk_ev_id_T evid)
{
assert(evmgr != NULL);
int i;
for (i = 0; i < evmgr->n_ev; ++i) {
if (evmgr->ev[i].evid == evid) {
return false;
}
}
evmgr->ev[evmgr->n_ev].evid = evid;
evmgr->n_ev++;
return true;
}
inline bool
pk_ev_register_cb(struct pk_ev_mgr *evmgr, pk_ev_id_T evid, pk_ev_cb *cb)
{
assert(evmgr != NULL);
struct pk_ev *ev = {0};
int i;
for (i = 0; i < evmgr->n_ev; ++i) {
if (evmgr->ev[i].evid == evid) {
ev = &evmgr->ev[i];
}
}
if (ev == NULL) return false;
ev->cb[ev->n_cb] = cb;
ev->n_cb++;
return true;
}
inline void
pk_ev_emit(struct pk_ev_mgr *evmgr, pk_ev_id_T evid)
{
assert(evmgr != NULL);
uint8_t i;
struct pk_ev *ev = {0};
for (i = 0; i < evmgr->n_ev; ++i) {
if (evmgr->ev[i].evid == evid) {
ev = &evmgr->ev[i];
break;
}
}
if (ev == NULL) return;
for (i = 0; i < ev->n_cb; ++i) {
(*ev->cb[i])();
}
}
#endif
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