document c++ callbacks!

[software/libev.git] / event.c

diff --git a/event.c b/event.c
index 1c2bc73a1d88ae05452de2f6b1ee71b58b6a8ca8..1d30ce53d60840c1e7a03485ef8f6cc44c590710 100644 (file)
--- a/event.c
+++ b/event.c
@@ -31,27 +31,33 @@
 
 #include <stddef.h>
 #include <stdlib.h>
-#include <sys/time.h>
+#include <assert.h>
 
-#include "event.h"
+#ifndef WIN32
+# include <sys/time.h>
+#endif
+
+#ifdef EV_EVENT_H
+# include EV_EVENT_H
+#else
+# include "event.h"
+#endif
 
-#ifdef EV_MULTIPLICITY
-# define dLOOPev struct ev_loop *loop = ev->ev_base->loop
-# define dLOOPbase struct ev_loop *loop = base->loop
+#if EV_MULTIPLICITY
+# define dLOOPev struct ev_loop *loop = (struct ev_loop *)ev->ev_base
+# define dLOOPbase struct ev_loop *loop = (struct ev_loop *)base
 #else
 # define dLOOPev
 # define dLOOPbase
 #endif
 
+/* never accessed, will always be cast from/to ev_loop */
 struct event_base
 {
-#ifdef EV_MULTIPLICITY
-  struct ev_loop *loop;
-#endif
   int dummy;
 };
 
-static struct event_base x_base, *x_cur;
+static struct event_base *x_cur;
 
 static void
 tv_set (struct timeval *tv, ev_tstamp at)
@@ -83,17 +89,28 @@ const char *event_get_method (void)
 
 void *event_init (void)
 {
-  if (!x_cur && ev_init (0))
-    return x_cur = &x_base;
+#if EV_MULTIPLICITY
+  if (x_cur)
+    x_cur = (struct event_base *)ev_loop_new (EVFLAG_AUTO);
+  else
+    x_cur = (struct event_base *)ev_default_loop (EVFLAG_AUTO);
+#else
+  assert (("multiple event bases not supported when not compiled with EV_MULTIPLICITY", !x_cur));
 
-  return 0;
+  x_cur = (struct event_base *)(long)ev_default_loop (EVFLAG_AUTO);
+#endif
+
+  return x_cur;
 }
 
 void event_base_free (struct event_base *base)
 {
   dLOOPbase;
 
-  /* nop */
+#if EV_MULTIPLICITY
+  if (ev_default_loop (EVFLAG_AUTO) != loop)
+    ev_loop_destroy (loop);
+#endif
 }
 
 int event_dispatch (void)
@@ -124,13 +141,18 @@ x_cb (struct event *ev, int revents)
   revents &= EV_READ | EV_WRITE | EV_TIMEOUT | EV_SIGNAL;
 
   ev->ev_res = revents;
-  ev->ev_callback (ev->ev_fd, revents, ev->ev_arg);
+  ev->ev_callback (ev->ev_fd, (short)revents, ev->ev_arg);
 }
 
 static void
 x_cb_sig (EV_P_ struct ev_signal *w, int revents)
 {
-  x_cb ((struct event *)(((char *)w) - offsetof (struct event, iosig.sig)), revents);
+  struct event *ev = (struct event *)(((char *)w) - offsetof (struct event, iosig.sig));
+
+  if (revents & EV_ERROR)
+    event_del (ev);
+
+  x_cb (ev, revents);
 }
 
 static void
@@ -138,8 +160,8 @@ x_cb_io (EV_P_ struct ev_io *w, int revents)
 {
   struct event *ev = (struct event *)(((char *)w) - offsetof (struct event, iosig.io));
 
-  if (!(ev->ev_events & EV_PERSIST) && ev_is_active (w))
-    ev_io_stop (w);
+  if ((revents & EV_ERROR) || !(ev->ev_events & EV_PERSIST))
+    event_del (ev);
 
   x_cb (ev, revents);
 }
@@ -147,25 +169,30 @@ x_cb_io (EV_P_ struct ev_io *w, int revents)
 static void
 x_cb_to (EV_P_ struct ev_timer *w, int revents)
 {
-  x_cb ((struct event *)(((char *)w) - offsetof (struct event, to)), revents);
+  struct event *ev = (struct event *)(((char *)w) - offsetof (struct event, to));
+
+  event_del (ev);
+
+  x_cb (ev, revents);
 }
 
 void event_set (struct event *ev, int fd, short events, void (*cb)(int, short, void *), void *arg)
 {
   if (events & EV_SIGNAL)
-    ev_watcher_init (&ev->iosig.sig, x_cb_sig);
+    ev_init (&ev->iosig.sig, x_cb_sig);
   else
-    ev_watcher_init (&ev->iosig.io, x_cb_io);
+    ev_init (&ev->iosig.io, x_cb_io);
 
-  ev_watcher_init (&ev->to, x_cb_to);
+  ev_init (&ev->to, x_cb_to);
 
-  ev->ev_base     = x_cur;
+  ev->ev_base     = x_cur; /* not threadsafe, but its like libevent works */
   ev->ev_fd       = fd;
   ev->ev_events   = events;
   ev->ev_pri      = 0;
   ev->ev_callback = cb;
   ev->ev_arg      = arg;
   ev->ev_res      = 0;
+  ev->ev_flags    = EVLIST_INIT;
 }
 
 int event_once (int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv)
@@ -177,26 +204,41 @@ int event_add (struct event *ev, struct timeval *tv)
 {
   dLOOPev;
 
-  /* disable all watchers */
-  event_del (ev);
-
   if (ev->ev_events & EV_SIGNAL)
     {
-      ev_signal_set (&ev->iosig.sig, ev->ev_fd);
-      ev_signal_start (EV_A_ &ev->iosig.sig);
+      if (!ev_is_active (&ev->iosig.sig))
+        {
+          ev_signal_set (&ev->iosig.sig, ev->ev_fd);
+          ev_signal_start (EV_A_ &ev->iosig.sig);
+
+          ev->ev_flags |= EVLIST_SIGNAL;
+        }
     }
   else if (ev->ev_events & (EV_READ | EV_WRITE))
     {
-      ev_io_set (&ev->iosig.io, ev->ev_fd, ev->ev_events & (EV_READ | EV_WRITE));
-      ev_io_start (EV_A_ &ev->iosig.io);
+      if (!ev_is_active (&ev->iosig.io))
+        {
+          ev_io_set (&ev->iosig.io, ev->ev_fd, ev->ev_events & (EV_READ | EV_WRITE));
+          ev_io_start (EV_A_ &ev->iosig.io);
+
+          ev->ev_flags |= EVLIST_INSERTED;
+        }
     }
 
   if (tv)
     {
-      ev_timer_set (&ev->to, tv_get (tv), 0.);
-      ev_timer_start (EV_A_ &ev->to);
+      ev->to.repeat = tv_get (tv);
+      ev_timer_again (EV_A_ &ev->to);
+      ev->ev_flags |= EVLIST_TIMEOUT;
+    }
+  else
+    {
+      ev_timer_stop (EV_A_ &ev->to);
+      ev->ev_flags &= ~EVLIST_TIMEOUT;
     }
 
+  ev->ev_flags |= EVLIST_ACTIVE;
+
   return 0;
 }
 
@@ -205,44 +247,52 @@ int event_del (struct event *ev)
   dLOOPev;
 
   if (ev->ev_events & EV_SIGNAL)
-    {
-      /* sig */
-      if (ev_is_active (&ev->iosig.sig))
-        ev_signal_stop (EV_A_ &ev->iosig.sig);
-    }
-  else
-    {
-      /* io */
-      if (ev_is_active (&ev->iosig.io))
-        ev_io_stop (EV_A_ &ev->iosig.io);
-    }
+    ev_signal_stop (EV_A_ &ev->iosig.sig);
+  else if (ev->ev_events & (EV_READ | EV_WRITE))
+    ev_io_stop (EV_A_ &ev->iosig.io);
 
   if (ev_is_active (&ev->to))
     ev_timer_stop (EV_A_ &ev->to);
 
+  ev->ev_flags = EVLIST_INIT;
+
   return 0;
 }
 
-int event_pending (struct event *ev, short events, struct timeval *tv)
+void event_active (struct event *ev, int res, short ncalls)
 {
   dLOOPev;
 
+  if (res & EV_TIMEOUT)
+    ev_feed_event (EV_A_ &ev->to, res & EV_TIMEOUT);
+
+  if (res & EV_SIGNAL)
+    ev_feed_event (EV_A_ &ev->iosig.sig, res & EV_SIGNAL);
+
+  if (res & (EV_READ | EV_WRITE))
+    ev_feed_event (EV_A_ &ev->iosig.io, res & (EV_READ | EV_WRITE));
+}
+
+int event_pending (struct event *ev, short events, struct timeval *tv)
+{
   short revents = 0;
+  dLOOPev;
+
 
   if (ev->ev_events & EV_SIGNAL)
     {
       /* sig */
-      if (ev->iosig.sig.pending)
+      if (ev_is_active (&ev->iosig.sig) || ev_is_pending (&ev->iosig.sig))
         revents |= EV_SIGNAL;
     }
-  else
+  else if (ev->ev_events & (EV_READ | EV_WRITE))
     {
       /* io */
-      if (ev->iosig.io.pending)
+      if (ev_is_active (&ev->iosig.io) || ev_is_pending (&ev->iosig.io))
         revents |= ev->ev_events & (EV_READ | EV_WRITE);
     }
 
-  if (ev->to.pending)
+  if (ev->ev_events & EV_TIMEOUT || ev_is_active (&ev->to) || ev_is_pending (&ev->to))
     {
       revents |= EV_TIMEOUT;
 
@@ -287,15 +337,17 @@ int event_base_dispatch (struct event_base *base)
 }
 
 static void
-x_loopexit_cb (EV_P_ int revents, void *arg)
+x_loopexit_cb (int revents, void *base)
 {
-  ev_unloop (EV_A_ 2);
+  dLOOPbase;
+
+  ev_unloop (EV_A_ EVUNLOOP_ONE);
 }
 
 int event_base_loopexit (struct event_base *base, struct timeval *tv)
 {
-  dLOOPbase;
   ev_tstamp after = tv_get (tv);
+  dLOOPbase;
 
   ev_once (EV_A_ -1, 0, after >= 0. ? after : 0., x_loopexit_cb, (void *)base);
 
@@ -312,16 +364,16 @@ struct x_once
 static void
 x_once_cb (int revents, void *arg)
 {
-  struct x_once *once = arg;
+  struct x_once *once = (struct x_once *)arg;
 
-  once->cb (once->fd, revents, once->arg);
+  once->cb (once->fd, (short)revents, once->arg);
   free (once);
 }
 
 int event_base_once (struct event_base *base, int fd, short events, void (*cb)(int, short, void *), void *arg, struct timeval *tv)
 {
+  struct x_once *once = (struct x_once *)malloc (sizeof (struct x_once));
   dLOOPbase;
-  struct x_once *once = malloc (sizeof (struct x_once));
 
   if (!once)
     return -1;
@@ -337,7 +389,7 @@ int event_base_once (struct event_base *base, int fd, short events, void (*cb)(i
 
 int event_base_priority_init (struct event_base *base, int npri)
 {
-  dLOOPbase;
+  /*dLOOPbase;*/
 
   return 0;
 }