[ViewVC] Diff of: cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.156 by root, Wed Nov 28 17:50:13 2007 UTC vs.
Revision 1.162 by root, Mon Dec 3 13:41:24 2007 UTC

 static void noinline
 fd_rearm_all (EV_P)
 {
   int fd;
-  /* this should be highly optimised to not do anything but set a flag */
   for (fd = 0; fd < anfdmax; ++fd)
     if (anfds [fd].events)
       {
         anfds [fd].events = 0;
         fd_change (EV_A_ fd);
 ev_backend (EV_P)
 {
   return backend;
 }
+unsigned int
+ev_loop_count (EV_P)
+{
+  return loop_count;
+}
 static void noinline
 loop_init (EV_P_ unsigned int flags)
 {
   if (!backend)
     {
       ev_rt_now = ev_time ();
       mn_now    = get_clock ();
       now_floor = mn_now;
       rtmn_diff = ev_rt_now - mn_now;
+      /* pid check not overridable via env */
+#ifndef _WIN32
+      if (flags & EVFLAG_FORKCHECK)
+        curpid = getpid ();
+#endif
       if (!(flags & EVFLAG_NOENV)
           && !enable_secure ()
           && getenv ("LIBEV_FLAGS"))
         flags = atoi (getenv ("LIBEV_FLAGS"));
           ev_tstamp odiff = rtmn_diff;
           /* loop a few times, before making important decisions.
            * on the choice of "4": one iteration isn't enough,
            * in case we get preempted during the calls to
-           * ev_time and get_clock. a second call is almost guarenteed
+           * ev_time and get_clock. a second call is almost guaranteed
            * to succeed in that case, though. and looping a few more times
            * doesn't hurt either as we only do this on time-jumps or
-           * in the unlikely event of getting preempted here.
+           * in the unlikely event of having been preempted here.
            */
           for (i = 4; --i; )
             {
               rtmn_diff = ev_rt_now - mn_now;
         {
 #if EV_PERIODIC_ENABLE
           periodics_reschedule (EV_A);
 #endif
-          /* adjust timers. this is easy, as the offset is the same for all */
+          /* adjust timers. this is easy, as the offset is the same for all of them */
           for (i = 0; i < timercnt; ++i)
             ((WT)timers [i])->at += ev_rt_now - mn_now;
         }
       mn_now = ev_rt_now;
 {
   loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
             ? EVUNLOOP_ONE
             : EVUNLOOP_CANCEL;
-  while (activecnt)
+  call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
+  do
     {
-      /* we might have forked, so reify kernel state if necessary */
+#ifndef _WIN32
+      if (expect_false (curpid)) /* penalise the forking check even more */
+        if (expect_false (getpid () != curpid))
+          {
+            curpid = getpid ();
+            postfork = 1;
+          }
+#endif
-      #if EV_FORK_ENABLE
+#if EV_FORK_ENABLE
+      /* we might have forked, so queue fork handlers */
-        if (expect_false (postfork))
+      if (expect_false (postfork))
-          if (forkcnt)
+        if (forkcnt)
-            {
+          {
-              queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
+            queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
-              call_pending (EV_A);
+            call_pending (EV_A);
-            }
+          }
-      #endif
+#endif
       /* queue check watchers (and execute them) */
       if (expect_false (preparecnt))
         {
           queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
           call_pending (EV_A);
         }
+      if (expect_false (!activecnt))
+        break;
       /* we might have forked, so reify kernel state if necessary */
       if (expect_false (postfork))
         loop_fork (EV_A);
       /* update fd-related kernel structures */
       fd_reify (EV_A);
       /* calculate blocking time */
       {
-        double block;
+        ev_tstamp block;
-        if (flags & EVLOOP_NONBLOCK || idlecnt)
+        if (expect_false (flags & EVLOOP_NONBLOCK || idlecnt || !activecnt))
           block = 0.; /* do not block at all */
         else
           {
             /* update time to cancel out callback processing overhead */
 #if EV_USE_MONOTONIC
 #endif
             if (expect_false (block < 0.)) block = 0.;
           }
+        ++loop_count;
         backend_poll (EV_A_ block);
       }
       /* update ev_rt_now, do magic */
       time_update (EV_A);
       if (expect_false (checkcnt))
         queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
       call_pending (EV_A);
-      if (expect_false (loop_done))
-        break;
     }
+  while (expect_true (activecnt && !loop_done));
   if (loop_done == EVUNLOOP_ONE)
     loop_done = EVUNLOOP_CANCEL;
 }
 # endif
 #define DEF_STAT_INTERVAL 5.0074891
 #define MIN_STAT_INTERVAL 0.1074891
-void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
+static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
 #if EV_USE_INOTIFY
 # define EV_INOTIFY_BUFSIZE 8192
 static void noinline
     w->attr.st_nlink = 0;
   else if (!w->attr.st_nlink)
     w->attr.st_nlink = 1;
 }
-void noinline
+static void noinline
 stat_timer_cb (EV_P_ ev_timer *w_, int revents)
 {
   ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
   /* we copy this here each the time so that */

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Comparing libev/ev.c (file contents): Revision 1.156 by root, Wed Nov 28 17:50:13 2007 UTC vs. Revision 1.162 by root, Mon Dec 3 13:41:24 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.156 by root, Wed Nov 28 17:50:13 2007 UTC vs.
Revision 1.162 by root, Mon Dec 3 13:41:24 2007 UTC