Imported Upstream version 0.13

1 files changed, 165 insertions, 0 deletions

diff --git a/libev/ev_port.c b/libev/ev_port.c
new file mode 100644
index 0000000..47da929
--- /dev/null
+++ b/libev/ev_port.c
@@ -0,0 +1,165 @@
+/*
+ * libev solaris event port backend
+ *
+ * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modifica-
+ * tion, 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.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
+ * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
+ * CIAL, 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 OTH-
+ * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * the GNU General Public License ("GPL") version 2 or any later version,
+ * in which case the provisions of the GPL are applicable instead of
+ * the above. If you wish to allow the use of your version of this file
+ * only under the terms of the GPL and not to allow others to use your
+ * version of this file under the BSD license, indicate your decision
+ * by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL. If you do not delete the
+ * provisions above, a recipient may use your version of this file under
+ * either the BSD or the GPL.
+ */
+
+#include <sys/types.h>
+#include <sys/time.h>
+#include <poll.h>
+#include <port.h>
+#include <string.h>
+#include <errno.h>
+
+void inline_speed
+port_associate_and_check (EV_P_ int fd, int ev)
+{
+  if (0 >
+      port_associate (
+         backend_fd, PORT_SOURCE_FD, fd,
+         (ev & EV_READ ? POLLIN : 0)
+         | (ev & EV_WRITE ? POLLOUT : 0),
+         0
+      )
+  )
+    {
+      if (errno == EBADFD)
+        fd_kill (EV_A_ fd);
+      else
+        ev_syserr ("(libev) port_associate");
+    }
+}
+
+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 (backend_fd, PORT_SOURCE_FD, fd);
+    }
+  else
+    port_associate_and_check (EV_A_ fd, nev);
+}
+
+static void
+port_poll (EV_P_ ev_tstamp timeout)
+{
+  int res, i;
+  struct timespec ts;
+  uint_t nget = 1;
+
+  EV_RELEASE_CB;
+  ts.tv_sec  = (time_t)timeout;
+  ts.tv_nsec = (long)(timeout - (ev_tstamp)ts.tv_sec) * 1e9;
+  res = port_getn (backend_fd, port_events, port_eventmax, &nget, &ts);
+  EV_ACQUIRE_CB;
+
+  if (res == -1)
+    { 
+      if (errno != EINTR && errno != ETIME)
+        ev_syserr ("(libev) port_getn (see http://bugs.opensolaris.org/view_bug.do?bug_id=6268715, try LIBEV_FLAGS=3 env variable)");
+
+      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)
+          );
+
+          port_associate_and_check (EV_A_ fd, anfds [fd].events);
+        }
+    }
+
+  if (expect_false (nget == port_eventmax))
+    {
+      ev_free (port_events);
+      port_eventmax = array_nextsize (sizeof (port_event_t), port_eventmax, port_eventmax + 1);
+      port_events = (port_event_t *)ev_malloc (sizeof (port_event_t) * port_eventmax);
+    }
+}
+
+int inline_size
+port_init (EV_P_ int flags)
+{
+  /* Initalize the kernel queue */
+  if ((backend_fd = port_create ()) < 0)
+    return 0;
+
+  fcntl (backend_fd, F_SETFD, FD_CLOEXEC); /* not sure if necessary, hopefully doesn't hurt */
+
+  backend_fudge  = 1e-3; /* needed to compensate for port_getn returning early */
+  backend_modify = port_modify;
+  backend_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 EVBACKEND_PORT;
+}
+
+void inline_size
+port_destroy (EV_P)
+{
+  ev_free (port_events);
+}
+
+void inline_size
+port_fork (EV_P)
+{
+  close (backend_fd);
+
+  while ((backend_fd = port_create ()) < 0)
+    ev_syserr ("(libev) port");
+
+  fcntl (backend_fd, F_SETFD, FD_CLOEXEC);
+
+  /* re-register interest in fds */
+  fd_rearm_all (EV_A);
+}
+