1 files changed, 147 insertions, 0 deletions
diff --git a/ev_port.c b/ev_port.c
new file mode 100644
index 0000000..fb25dff
--- /dev/null
+++ b/ev_port.c
@@ -0,0 +1,147 @@
+/*
+ * Copyright 2007      Marc Alexander Lehmann <libev@schmorp.de>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/types.h>
+#include <sys/time.h>
+#include <poll.h>
+#include <port.h>
+#include <string.h>
+#include <errno.h>
+
+static void
+port_modify (EV_P_ int fd, int oev, int nev)
+{
+  /* we need to reassociate no matter what, as closes are
+   * once more silently being discarded.
+   */
+  if (!nev)
+    {
+      if (oev)
+        port_dissociate (port_fd, PORT_SOURCE_FD, fd);
+    }
+  else if (0 >
+      port_associate (
+         port_fd, PORT_SOURCE_FD, fd,
+         (nev & EV_READ ? POLLIN : 0)
+         | (nev & EV_WRITE ? POLLOUT : 0),
+         0
+      )
+  )
+    {
+      if (errno == EBADFD)
+        fd_kill (EV_A_ fd);
+      else
+        syserr ("(libev) port_associate");
+    } 
+}
+
+static void
+port_poll (EV_P_ ev_tstamp timeout)
+{
+  int res, i;
+  struct timespec ts;
+  uint_t nget = 1;
+
+  ts.tv_sec  = (time_t)timeout;
+  ts.tv_nsec = (long)(timeout - (ev_tstamp)ts.tv_sec) * 1e9;
+  res = port_getn (port_fd, port_events, port_eventmax, &nget, &ts);
+
+  if (res < 0)
+    { 
+      if (errno != EINTR && errno != ETIME)
+        syserr ("(libev) port_getn");
+
+      return;
+    } 
+
+  for (i = 0; i < nget; ++i)
+    {
+      if (port_events [i].portev_source == PORT_SOURCE_FD)
+        {
+          int fd = port_events [i].portev_object;
+
+          fd_event (
+            EV_A_
+            fd,
+            (port_events [i].portev_events & (POLLOUT | POLLERR | POLLHUP) ? EV_WRITE : 0)
+            | (port_events [i].portev_events & (POLLIN | POLLERR | POLLHUP) ? EV_READ : 0)
+          );
+
+          anfds [fd].events = 0; /* event received == disassociated */
+          fd_change (EV_A_ fd); /* need to reify later */
+        }
+    }
+
+  if (expect_false (nget == port_eventmax))
+    {
+      ev_free (port_events);
+      port_eventmax = array_roundsize (port_event_t, port_eventmax << 1);
+      port_events = (port_event_t *)ev_malloc (sizeof (port_event_t) * port_eventmax);
+    }
+}
+
+static int
+port_init (EV_P_ int flags)
+{
+  /* Initalize the kernel queue */
+  if ((port_fd = port_create ()) < 0)
+    return 0;
+
+  fcntl (port_fd, F_SETFD, FD_CLOEXEC); /* not sure if necessary, hopefully doesn't hurt */
+
+  method_fudge  = 1e-3; /* needed to compensate for port_getn returning early */
+  method_modify = port_modify;
+  method_poll   = port_poll;
+
+  port_eventmax = 64; /* intiial number of events receivable per poll */
+  port_events = (port_event_t *)ev_malloc (sizeof (port_event_t) * port_eventmax);
+
+  return EVMETHOD_PORT;
+}
+
+static void
+port_destroy (EV_P)
+{
+  close (port_fd);
+
+  ev_free (port_events);
+}
+
+static void
+port_fork (EV_P)
+{
+  close (port_fd);
+
+  while ((port_fd = port_create ()) < 0)
+    syserr ("(libev) port");
+
+  fcntl (port_fd, F_SETFD, FD_CLOEXEC);
+
+  /* re-register interest in fds */
+  fd_rearm_all (EV_A);
+}
+