#ifndef EV_H
#define EV_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
typedef double ev_tstamp;
+/* these priorities are inclusive, higher priorities will be called earlier */
+#ifndef EV_MINPRI
+# define EV_MINPRI -2
+#endif
+#ifndef EV_MAXPRI
+# define EV_MAXPRI +2
+#endif
+
/* eventmask, revents, events... */
-#define EV_UNDEF -1 /* guaranteed to be invalid */
-#define EV_NONE 0x00
-#define EV_READ 0x01
-#define EV_WRITE 0x02
-#define EV_REIFY 0x04 /* private */
-#define EV_TIMEOUT 0x000100
-#define EV_SIGNAL 0x000200
-#define EV_IDLE 0x000400
-#define EV_CHECK 0x000800
-#define EV_PREPARE 0x001000
-#define EV_CHILD 0x002000
-#define EV_ERROR 0x800000 /* sent when an error occurs */
+#define EV_UNDEF -1 /* guaranteed to be invalid */
+#define EV_NONE 0x00
+#define EV_READ 0x01
+#define EV_WRITE 0x02
+#define EV_TIMEOUT 0x000100
+#define EV_PERIODIC 0x000200
+#define EV_SIGNAL 0x000400
+#define EV_IDLE 0x000800
+#define EV_CHECK 0x001000
+#define EV_PREPARE 0x002000
+#define EV_CHILD 0x004000
+#define EV_ERROR 0x800000 /* sent when an error occurs */
/* can be used to add custom fields to all watchers */
#ifndef EV_COMMON
#define EV_WATCHER(type) \
int active; /* private */ \
int pending; /* private */ \
+ int priority; /* ro */ \
EV_COMMON; /* rw */ \
void (*cb)(struct type *, int revents); /* rw */ /* gets invoked with an eventmask */
};
/* invoked after a specific time, repeatable (based on monotonic clock) */
+/* revent EV_TIMEOUT */
struct ev_timer
{
EV_WATCHER_TIME (ev_timer);
};
/* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */
+/* revent EV_PERIODIC */
struct ev_periodic
{
EV_WATCHER_TIME (ev_periodic);
};
/* invoked when fd is either EV_READable or EV_WRITEable */
+/* revent EV_READ, EV_WRITE */
struct ev_io
{
EV_WATCHER_LIST (ev_io);
};
/* invoked when the given signal has been received */
+/* revent EV_SIGNAL */
struct ev_signal
{
EV_WATCHER_LIST (ev_signal);
};
/* invoked when the nothing else needs to be done, keeps the process from blocking */
+/* revent EV_IDLE */
struct ev_idle
{
EV_WATCHER (ev_idle);
/* invoked for each run of the mainloop, just before the blocking call */
/* you can still change events in any way you like */
+/* revent EV_PREPARE */
struct ev_prepare
{
EV_WATCHER (ev_prepare);
};
/* invoked for each run of the mainloop, just after the blocking call */
+/* revent EV_CHECK */
struct ev_check
{
EV_WATCHER (ev_check);
};
/* invoked when sigchld is received and waitpid indicates the givne pid */
+/* revent EV_CHILD */
struct ev_child
{
EV_WATCHER_LIST (ev_child);
- int pid; /* ro */
- int status; /* rw, holds the exit status, use the macros from sys/wait.h */
+ int pid; /* ro */
+ int rpid; /* rw, holds the received pid */
+ int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */
};
-#define EVMETHOD_NONE 0
-#define EVMETHOD_SELECT 1
-#define EVMETHOD_EPOLL 2
+#define EVMETHOD_AUTO 0 /* consults environment */
+#define EVMETHOD_SELECT 1
+#define EVMETHOD_POLL 2
+#define EVMETHOD_EPOLL 4
+#define EVMETHOD_KQUEUE 8
+#define EVMETHOD_DEVPOLL 16 /* NYI */
+#define EVMETHOD_PORT 32 /* NYI */
+#define EVMETHOD_ANY ~0 /* any method, do not consult env */
#if EV_PROTOTYPES
extern int ev_method;
-int ev_init (int flags); /* returns ev_method */
+int ev_init (int methods); /* returns ev_method */
int ev_version_major (void);
int ev_version_minor (void);
/* these three calls are suitable for plugging into pthread_atfork */
-void ev_prefork (void);
-void ev_postfork_parent (void);
-void ev_postfork_child (void);
+void ev_fork_prepare (void);
+void ev_fork_parent (void);
+void ev_fork_child (void);
extern ev_tstamp ev_now; /* time w.r.t. timers and the eventloop, updated after each poll */
ev_tstamp ev_time (void);
#endif
/* these may evaluate ev multiple times, and the other arguments at most once */
-/* either use evw_init + evXXX_set, or the evXXX_init macro, below, to first initialise a watcher */
-#define evw_init(ev,cb_) do { (ev)->active = 0; (ev)->pending = 0; (ev)->cb = (cb_); } while (0)
-
-#define evio_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0)
-#define evtimer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0)
-#define evperiodic_set(ev,at_,interval_) do { (ev)->at = (at_); (ev)->interval = (interval_); } while (0)
-#define evsignal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0)
-#define evidle_set(ev) /* nop, yes, this is a serious in-joke */
-#define evprepare_set(ev) /* nop, yes, this is a serious in-joke */
-#define evcheck_set(ev) /* nop, yes, this is a serious in-joke */
-#define evchild_set(ev,pid_) do { (ev)->pid = (pid_); } while (0)
-
-#define evio_init(ev,cb,fd,events) do { evw_init ((ev), (cb)); evio_set ((ev),(fd),(events)); } while (0)
-#define evtimer_init(ev,cb,after,repeat) do { evw_init ((ev), (cb)); evtimer_set ((ev),(after),(repeat)); } while (0)
-#define evperiodic_init(ev,cb,at,interval) do { evw_init ((ev), (cb)); evperiodic_set ((ev),(at),(interval)); } while (0)
-#define evsignal_init(ev,cb,signum) do { evw_init ((ev), (cb)); evsignal_set ((ev), (signum)); } while (0)
-#define evidle_init(ev,cb) do { evw_init ((ev), (cb)); evidle_set ((ev)); } while (0)
-#define evprepare_init(ev,cb) do { evw_init ((ev), (cb)); evprepare_set ((ev)); } while (0)
-#define evcheck_init(ev,cb) do { evw_init ((ev), (cb)); evcheck_set ((ev)); } while (0)
-#define evchild_init(ev,cb,pid) do { evw_init ((ev), (cb)); evchild_set ((ev),(pid)); } while (0)
-
-#define ev_is_active(ev) (0 + (ev)->active) /* true when the watcher has been started */
+/* either use ev_watcher_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */
+#define ev_watcher_init(ev,cb_) do { (ev)->active = (ev)->pending = (ev)->priority = 0; (ev)->cb = (cb_); } while (0)
+
+#define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0)
+#define ev_timer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0)
+#define ev_periodic_set(ev,at_,interval_) do { (ev)->at = (at_); (ev)->interval = (interval_); } while (0)
+#define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0)
+#define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */
+#define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */
+#define ev_check_set(ev) /* nop, yes, this is a serious in-joke */
+#define ev_child_set(ev,pid_) do { (ev)->pid = (pid_); } while (0)
+
+#define ev_io_init(ev,cb,fd,events) do { ev_watcher_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0)
+#define ev_timer_init(ev,cb,after,repeat) do { ev_watcher_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0)
+#define ev_periodic_init(ev,cb,at,interval) do { ev_watcher_init ((ev), (cb)); ev_periodic_set ((ev),(at),(interval)); } while (0)
+#define ev_signal_init(ev,cb,signum) do { ev_watcher_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0)
+#define ev_idle_init(ev,cb) do { ev_watcher_init ((ev), (cb)); ev_idle_set ((ev)); } while (0)
+#define ev_prepare_init(ev,cb) do { ev_watcher_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0)
+#define ev_check_init(ev,cb) do { ev_watcher_init ((ev), (cb)); ev_check_set ((ev)); } while (0)
+#define ev_child_init(ev,cb,pid) do { ev_watcher_init ((ev), (cb)); ev_child_set ((ev),(pid)); } while (0)
+
+#define ev_is_active(ev) (0 + (ev)->active) /* true when the watcher has been started */
+#define ev_set_priority(ev,pri) (ev)->priority = pri
/* stopping (enabling, adding) a watcher does nothing if it is already running */
/* stopping (disabling, deleting) a watcher does nothing unless its already running */
#if EV_PROTOTYPES
-void evio_start (struct ev_io *w);
-void evio_stop (struct ev_io *w);
+void ev_io_start (struct ev_io *w);
+void ev_io_stop (struct ev_io *w);
+
+void ev_timer_start (struct ev_timer *w);
+void ev_timer_stop (struct ev_timer *w);
+void ev_timer_again (struct ev_timer *w); /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */
-void evtimer_start (struct ev_timer *w);
-void evtimer_stop (struct ev_timer *w);
-void evtimer_again (struct ev_timer *w); /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */
+void ev_periodic_start (struct ev_periodic *w);
+void ev_periodic_stop (struct ev_periodic *w);
-void evperiodic_start (struct ev_periodic *w);
-void evperiodic_stop (struct ev_periodic *w);
+void ev_signal_start (struct ev_signal *w);
+void ev_signal_stop (struct ev_signal *w);
-void evsignal_start (struct ev_signal *w);
-void evsignal_stop (struct ev_signal *w);
+void ev_idle_start (struct ev_idle *w);
+void ev_idle_stop (struct ev_idle *w);
-void evidle_start (struct ev_idle *w);
-void evidle_stop (struct ev_idle *w);
+void ev_prepare_start (struct ev_prepare *w);
+void ev_prepare_stop (struct ev_prepare *w);
-void evprepare_start (struct ev_prepare *w);
-void evprepare_stop (struct ev_prepare *w);
+void ev_check_start (struct ev_check *w);
+void ev_check_stop (struct ev_check *w);
-void evcheck_start (struct ev_check *w);
-void evcheck_stop (struct ev_check *w);
+void ev_child_start (struct ev_child *w);
+void ev_child_stop (struct ev_child *w);
+#endif
-void evchild_start (struct ev_child *w);
-void evchild_stop (struct ev_child *w);
+#ifdef __cplusplus
+}
#endif
#endif
projects / software / libev.git / blobdiff