#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);
/* these may evaluate ev multiple times, and the other arguments at most once */
/* 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 = 0; (ev)->pending = 0; (ev)->cb = (cb_); } while (0)
+#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_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_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 */
void ev_child_stop (struct ev_child *w);
#endif
+#ifdef __cplusplus
+}
+#endif
+
#endif
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