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#ifndef ELOOP_H
#define ELOOP_H
/* Magic number for eloop_cancel_timeout() */
#define ELOOP_ALL_CTX (void *) -1
/* Initialize global event loop data - must be called before any other eloop_*
* function. user_data is a pointer to global data structure and will be passed
* as eloop_ctx to signal handlers. */
void eloop_init(void *user_data);
/* Register handler for read event */
int eloop_register_read_sock(int sock,
void (*handler)(int sock, void *eloop_ctx,
void *sock_ctx),
void *eloop_data, void *user_data);
void eloop_unregister_read_sock(int sock);
/* Register timeout */
int eloop_register_timeout(unsigned int secs, unsigned int usecs,
void (*handler)(void *eloop_ctx, void *timeout_ctx),
void *eloop_data, void *user_data);
/* Cancel timeouts matching <handler,eloop_data,user_data>.
* ELOOP_ALL_CTX can be used as a wildcard for cancelling all timeouts
* regardless of eloop_data/user_data. */
int eloop_cancel_timeout(void (*handler)(void *eloop_ctx, void *sock_ctx),
void *eloop_data, void *user_data);
/* Register handler for signal.
* Note: signals are 'global' events and there is no local eloop_data pointer
* like with other handlers. The (global) pointer given to eloop_init() will be
* used as eloop_ctx for signal handlers. */
int eloop_register_signal(int sock,
void (*handler)(int sig, void *eloop_ctx,
void *signal_ctx),
void *user_data);
/* Start event loop and continue running as long as there are any registered
* event handlers. */
void eloop_run(void);
/* Terminate event loop even if there are registered events. */
void eloop_terminate(void);
/* Free any reserved resources. After calling eloop_destoy(), other eloop_*
* functions must not be called before re-running eloop_init(). */
void eloop_destroy(void);
/* Check whether event loop has been terminated. */
int eloop_terminated(void);
#endif /* ELOOP_H */
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