big win32 check-in

[software/libev.git] / ev_kqueue.c

diff --git a/ev_kqueue.c b/ev_kqueue.c
index 6e6164617b6ec1d2bd483a0fa346aed35ebe7415..8d5021fc012e361bdc93bfac8c734ebff5a2c47c 100644 (file)
--- a/ev_kqueue.c
+++ b/ev_kqueue.c
@@ -1,4 +1,3 @@
-
 /*
  * Copyright 2007      Marc Alexander Lehmann <libev@schmorp.de>
  * Copyright 2000-2002 Niels Provos <provos@citi.umich.edu>
@@ -35,20 +34,14 @@
 #include <string.h>
 #include <errno.h>
 
-static int kq_fd;
-static struct kevent *kq_changes;
-static int kq_changemax, kq_changecnt;
-static struct kevent *kq_events;
-static int kq_eventmax;
-
 static void
-kqueue_change (int fd, int filter, int flags, int fflags)
+kqueue_change (EV_P_ int fd, int filter, int flags, int fflags)
 {
   struct kevent *ke;
 
-  array_needsize (kq_changes, kq_changemax, ++kq_changecnt, );
+  array_needsize (kqueue_changes, kqueue_changemax, ++kqueue_changecnt, );
 
-  ke = &kq_changes [kq_changecnt - 1];
+  ke = &kqueue_changes [kqueue_changecnt - 1];
   memset (ke, 0, sizeof (struct kevent));
   ke->ident  = fd;
   ke->filter = filter;
@@ -56,10 +49,14 @@ kqueue_change (int fd, int filter, int flags, int fflags)
   ke->fflags = fflags;
 }
 
+#ifndef NOTE_EOF
+# define NOTE_EOF 0
+#endif
+
 static void
-kqueue_modify (int fd, int oev, int nev)
+kqueue_modify (EV_P_ int fd, int oev, int nev)
 {
-  if ((oev ^ new) & EV_READ)
+  if ((oev ^ nev) & EV_READ)
     {
       if (nev & EV_READ)
         kqueue_change (fd, EVFILT_READ, EV_ADD, NOTE_EOF);
@@ -67,7 +64,7 @@ kqueue_modify (int fd, int oev, int nev)
         kqueue_change (fd, EVFILT_READ, EV_DELETE, 0);
     }
 
-  if ((oev ^ new) & EV_WRITE)
+  if ((oev ^ nev) & EV_WRITE)
     {
       if (nev & EV_WRITE)
         kqueue_change (fd, EVFILT_WRITE, EV_ADD, NOTE_EOF);
@@ -77,22 +74,27 @@ kqueue_modify (int fd, int oev, int nev)
 }
 
 static void
-kqueue_poll (ev_tstamp timeout)
+kqueue_poll (EV_P_ ev_tstamp timeout)
 {
   int res, i;
   struct timespec ts;
 
   ts.tv_sec  = (time_t)timeout;
   ts.tv_nsec = (long)(timeout - (ev_tstamp)ts.tv_sec) * 1e9;
-  res = kevent (kq_fd, kq_changes, kq_changecnt, kq_events, kq_eventmax, &ts);
-  kq_changecnt = 0;
+  res = kevent (kqueue_fd, kqueue_changes, kqueue_changecnt, kqueue_events, kqueue_eventmax, &ts);
+  kqueue_changecnt = 0;
 
   if (res < 0)
-    return;
+    { 
+      if (errno != EINTR)
+        syserr ("(libev) kevent");
+
+      return;
+    } 
 
   for (i = 0; i < res; ++i)
     {
-      if (kq_events [i].flags & EV_ERROR)
+      if (kqueue_events [i].flags & EV_ERROR)
         {
           /* 
            * Error messages that can happen, when a delete fails.
@@ -106,34 +108,37 @@ kqueue_poll (ev_tstamp timeout)
            * an event we are still processing.  In that case
            * the data field is set to ENOENT.
            */
-          if (events [i].data == EBADF)
-            fd_kill (events [i].ident);
+          if (kqueue_events [i].data == EBADF)
+            fd_kill (EV_A_ kqueue_events [i].ident);
         }
       else
-        event (
-          events [i].ident,
-          events [i].filter == EVFILT_READ ? EV_READ
-          : events [i].filter == EVFILT_WRITE ? EV_WRITE
+        fd_event (
+          EV_A_
+          kqueue_events [i].ident,
+          kqueue_events [i].filter == EVFILT_READ ? EV_READ
+          : kqueue_events [i].filter == EVFILT_WRITE ? EV_WRITE
           : 0
         );
     }
 
-  if (expect_false (res == kq_eventmax))
+  if (expect_false (res == kqueue_eventmax))
     {
-      free (kq_events);
-      kq_eventmax = array_roundsize (kq_events, kq_eventmax << 1);
-      kq_events = malloc (sizeof (struct kevent) * kq_eventmax);
+      ev_free (kqueue_events);
+      kqueue_eventmax = array_roundsize (kqueue_events, kqueue_eventmax << 1);
+      kqueue_events = ev_malloc (sizeof (struct kevent) * kqueue_eventmax);
     }
 }
 
-static void
-kqueue_init (struct event_base *base)
+static int
+kqueue_init (EV_P_ int flags)
 {
   struct kevent ch, ev;
 
   /* Initalize the kernel queue */
-  if ((kq_fd = kqueue ()) < 0)
-    return;
+  if ((kqueue_fd = kqueue ()) < 0)
+    return 0;
+
+  fcntl (kqueue_fd, F_SETFD, FD_CLOEXEC); /* not sure if necessary, hopefully doesn't hurt */
 
   /* Check for Mac OS X kqueue bug. */
   ch.ident  = -1;
@@ -142,24 +147,52 @@ kqueue_init (struct event_base *base)
 
   /* 
    * If kqueue works, then kevent will succeed, and it will
-   * stick an error in events[0]. If kqueue is broken, then
+   * stick an error in ev. If kqueue is broken, then
    * kevent will fail.
    */
-  if (kevent (kq_fd, &ch, 1, &ev, 1, 0) != 1
+  if (kevent (kqueue_fd, &ch, 1, &ev, 1, 0) != 1
       || ev.ident != -1
       || ev.flags != EV_ERROR)
     {
       /* detected broken kqueue */
-      close (kq_fd);
-      return;
+      close (kqueue_fd);
+      return 0;
     }
 
-  ev_method     = EVMETHOD_KQUEUE;
   method_fudge  = 1e-3; /* needed to compensate for kevent returning early */
-  method_modify = kq_modify;
-  method_poll   = kq_poll;
+  method_modify = kqueue_modify;
+  method_poll   = kqueue_poll;
+
+  kqueue_eventmax = 64; /* intiial number of events receivable per poll */
+  kqueue_events = ev_malloc (sizeof (struct kevent) * kqueue_eventmax);
+
+  kqueue_changes   = 0;
+  kqueue_changemax = 0;
+  kqueue_changecnt = 0;
+
+  return EVMETHOD_KQUEUE;
+}
+
+static void
+kqueue_destroy (EV_P)
+{
+  close (kqueue_fd);
+
+  ev_free (kqueue_events);
+  ev_free (kqueue_changes);
+}
+
+static void
+kqueue_fork (EV_P)
+{
+  close (kqueue_fd);
+
+  while ((kqueue_fd = kqueue ()) < 0)
+    syserr ("(libev) kqueue");
+
+  fcntl (kqueue_fd, F_SETFD, FD_CLOEXEC);
 
-  kq_eventmax = 64; /* intiial number of events receivable per poll */
-  kq_events = malloc (sizeof (struct kevent) * kq_eventmax);
+  /* re-register interest in fds */
+  fd_rearm_all (EV_A);
 }