*** empty log message ***

[software/libev.git] / ev.h

diff --git a/ev.h b/ev.h
index d98fe8edb6635cb971c28dce93502c37403794e2..b563c3fcbfad8be8b418d654a6ebb6a7812c0f5f 100644 (file)
--- a/ev.h
+++ b/ev.h
@@ -98,9 +98,9 @@ struct ev_loop;
 #define EV_WATCHER(type)                       \
   int active; /* private */                    \
   int pending; /* private */                   \
-  int priority; /* ro */                       \
+  int priority; /* private */                  \
   EV_COMMON; /* rw */                          \
-  void (*cb)(EV_P_ struct type *, int revents); /* rw */ /* gets invoked with an eventmask */
+  void (*cb)(EV_P_ struct type *, int revents); /* private */ /* gets invoked with an eventmask */
 
 #define EV_WATCHER_LIST(type)                  \
   EV_WATCHER (type);                           \
@@ -206,28 +206,36 @@ struct ev_child
 #define EVMETHOD_KQUEUE   8
 #define EVMETHOD_DEVPOLL 16 /* NYI */
 #define EVMETHOD_PORT    32 /* NYI */
+#define EVMETHOD_WIN32   64 /* NYI */
 #define EVMETHOD_ANY     ~0 /* any method, do not consult env */
 
 #if EV_PROTOTYPES
 int ev_version_major (void);
 int ev_version_minor (void);
 
-/* these three calls are suitable for plugging into pthread_atfork */
-void ev_fork_prepare (void);
-void ev_fork_parent (void);
-void ev_fork_child (void);
-
 ev_tstamp ev_time (void);
 
 # if EV_MULTIPLICITY
+/* the default loop is the only one that handles signals and child watchers */
+/* you can call this as often as you like */
+struct ev_loop *ev_default_loop (int methods); /* returns default loop */
+
+/* create and destroy alternative loops that don't handle signals */
 struct ev_loop *ev_loop_new (int methods);
-void ev_loop_delete (EV_P);
+void ev_loop_destroy (EV_P);
+void ev_loop_fork (EV_P);
 # else
-int ev_init (int methods); /* returns ev_method */
+int ev_default_loop (int methods); /* returns true when successful */
 # endif
 
-int ev_method (EV_P);
+void ev_default_destroy (void); /* destroy the default loop */
+/* this needs to be called after fork, to duplicate the default loop */
+/* if you create alternative loops you have to call ev_loop_fork on them */
+/* you can call it in either the parent or the child */
+/* you can actually call it at any time, anywhere :) */
+void ev_default_fork (void);
 
+int ev_method (EV_P);
 #endif
 
 #define EVLOOP_NONBLOCK        1 /* do not block/wait */
@@ -256,7 +264,12 @@ void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revent
 
 /* 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 = (ev)->pending = (ev)->priority = 0; (ev)->cb = (cb_); } while (0)
+#define ev_watcher_init(ev,cb_) do {           \
+  ((struct ev_watcher *)(void *)(ev))->active   =      \
+  ((struct ev_watcher *)(void *)(ev))->pending  =      \
+  ((struct ev_watcher *)(void *)(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)
@@ -276,8 +289,13 @@ void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revent
 #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
+#define ev_is_pending(ev)                   (0 + ((struct ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */
+#define ev_is_active(ev)                    (0 + ((struct ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */
+
+#define ev_priority(ev)                     ((struct ev_watcher *)(void *)(ev))->priority /* rw */
+#define ev_cb(ev)                           (ev)->cb /* rw */
+#define ev_set_priority(ev,pri)             ev_priority (ev) = (pri)
+#define ev_set_cb(ev,cb_)                   ev_cb (ev) = (cb_)
 
 /* stopping (enabling, adding) a watcher does nothing if it is already running */
 /* stopping (disabling, deleting) a watcher does nothing unless its already running */
@@ -287,14 +305,12 @@ void ev_io_stop        (EV_P_ struct ev_io *w);
 
 void ev_timer_start    (EV_P_ struct ev_timer *w);
 void ev_timer_stop     (EV_P_ struct ev_timer *w);
-void ev_timer_again    (EV_P_ struct ev_timer *w); /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */
+/* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */
+void ev_timer_again    (EV_P_ struct ev_timer *w);
 
 void ev_periodic_start (EV_P_ struct ev_periodic *w);
 void ev_periodic_stop  (EV_P_ struct ev_periodic *w);
 
-void ev_signal_start   (EV_P_ struct ev_signal *w);
-void ev_signal_stop    (EV_P_ struct ev_signal *w);
-
 void ev_idle_start     (EV_P_ struct ev_idle *w);
 void ev_idle_stop      (EV_P_ struct ev_idle *w);
 
@@ -304,6 +320,11 @@ void ev_prepare_stop   (EV_P_ struct ev_prepare *w);
 void ev_check_start    (EV_P_ struct ev_check *w);
 void ev_check_stop     (EV_P_ struct ev_check *w);
 
+/* only supported in the default loop */
+void ev_signal_start   (EV_P_ struct ev_signal *w);
+void ev_signal_stop    (EV_P_ struct ev_signal *w);
+
+/* only supported in the default loop */
 void ev_child_start    (EV_P_ struct ev_child *w);
 void ev_child_stop     (EV_P_ struct ev_child *w);
 #endif