foot/fdm.h
Daniel Eklöf 6534f64e6a
fdm: add hook priorities
There are now three hook priorities: low, normal, high.

High priority hooks are executed *first*. Normal next, and last the
low priority hooks.

The renderer's terminal refresh hook now runs as a normal priority
hook.
2020-01-04 23:26:27 +01:00

30 lines
888 B
C

#pragma once
#include <stdbool.h>
struct fdm;
typedef bool (*fdm_handler_t)(struct fdm *fdm, int fd, int events, void *data);
typedef void (*fdm_hook_t)(struct fdm *fdm, void *data);
enum fdm_hook_priority {
FDM_HOOK_PRIORITY_LOW,
FDM_HOOK_PRIORITY_NORMAL,
FDM_HOOK_PRIORITY_HIGH
};
struct fdm *fdm_init(void);
void fdm_destroy(struct fdm *fdm);
bool fdm_add(struct fdm *fdm, int fd, int events, fdm_handler_t handler, void *data);
bool fdm_del(struct fdm *fdm, int fd);
bool fdm_del_no_close(struct fdm *fdm, int fd);
bool fdm_event_add(struct fdm *fdm, int fd, int events);
bool fdm_event_del(struct fdm *fdm, int fd, int events);
bool fdm_hook_add(struct fdm *fdm, fdm_hook_t hook, void *data,
enum fdm_hook_priority priority);
bool fdm_hook_del(struct fdm *fdm, fdm_hook_t hook, enum fdm_hook_priority priority);
bool fdm_poll(struct fdm *fdm);