Imported Debian patch 2.1.3-1debian/2.1.3-1

1 files changed, 24 insertions, 50 deletions

diff --git a/src/poll.cpp b/src/poll.cpp
index 1b203db..6a84d2e 100644
--- a/src/poll.cpp
+++ b/src/poll.cpp
@@ -1,19 +1,20 @@
 /*
-    Copyright (c) 2007-2010 iMatix Corporation
+    Copyright (c) 2007-2011 iMatix Corporation
+    Copyright (c) 2007-2011 Other contributors as noted in the AUTHORS file
 
     This file is part of 0MQ.
 
     0MQ is free software; you can redistribute it and/or modify it under
-    the terms of the Lesser GNU General Public License as published by
+    the terms of the GNU Lesser General Public License as published by
     the Free Software Foundation; either version 3 of the License, or
     (at your option) any later version.
 
     0MQ is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    Lesser GNU General Public License for more details.
+    GNU Lesser General Public License for more details.
 
-    You should have received a copy of the Lesser GNU General Public License
+    You should have received a copy of the GNU Lesser General Public License
     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
@@ -27,7 +28,6 @@
 
 #include <sys/types.h>
 #include <sys/time.h>
-#include <sys/resource.h>
 #include <poll.h>
 #include <algorithm>
 
@@ -40,27 +40,25 @@ zmq::poll_t::poll_t () :
     retired (false),
     stopping (false)
 {
-    //  Get the limit on open file descriptors. Resize fds so that it
-    //  can hold all descriptors.
-    rlimit rl;
-    int rc = getrlimit (RLIMIT_NOFILE, &rl);
-    errno_assert (rc != -1);
-    fd_table.resize (rl.rlim_cur);
-
-    for (rlim_t i = 0; i < rl.rlim_cur; i ++)
-        fd_table [i].index = retired_fd;
 }
 
 zmq::poll_t::~poll_t ()
 {
     worker.stop ();
-
-    //  Make sure there are no fds registered on shutdown.
-    zmq_assert (load.get () == 0);
 }
 
 zmq::poll_t::handle_t zmq::poll_t::add_fd (fd_t fd_, i_poll_events *events_)
 {
+    //  If the file descriptor table is too small expand it.
+    fd_table_t::size_type sz = fd_table.size ();
+    if (sz <= (fd_table_t::size_type) fd_) {
+        fd_table.resize (fd_ + 1);
+        while (sz != (fd_table_t::size_type) (fd_ + 1)) {
+            fd_table [sz].index = retired_fd;
+            ++sz;
+        }
+    }
+
     pollfd pfd = {fd_, 0, 0};
     pollset.push_back (pfd);
     assert (fd_table [fd_].index == retired_fd);
@@ -69,7 +67,7 @@ zmq::poll_t::handle_t zmq::poll_t::add_fd (fd_t fd_, i_poll_events *events_)
     fd_table [fd_].events = events_;
 
     //  Increase the load metric of the thread.
-    load.add (1);
+    adjust_load (1);
 
     return fd_;
 }
@@ -85,7 +83,7 @@ void zmq::poll_t::rm_fd (handle_t handle_)
     retired = true;
 
     //  Decrease the load metric of the thread.
-    load.sub (1);
+    adjust_load (-1);
 }
 
 void zmq::poll_t::set_pollin (handle_t handle_)
@@ -112,23 +110,6 @@ void zmq::poll_t::reset_pollout (handle_t handle_)
     pollset [index].events &= ~((short) POLLOUT);
 }
 
-void zmq::poll_t::add_timer (i_poll_events *events_)
-{
-     timers.push_back (events_);
-}
-
-void zmq::poll_t::cancel_timer (i_poll_events *events_)
-{
-    timers_t::iterator it = std::find (timers.begin (), timers.end (), events_);
-    if (it != timers.end ())
-        timers.erase (it);
-}
-
-int zmq::poll_t::get_load ()
-{
-    return load.get ();
-}
-
 void zmq::poll_t::start ()
 {
     worker.start (worker_routine, this);
@@ -143,27 +124,20 @@ void zmq::poll_t::loop ()
 {
     while (!stopping) {
 
+        //  Execute any due timers.
+        int timeout = (int) execute_timers ();
+
         //  Wait for events.
-        int rc = poll (&pollset [0], pollset.size (),
-            timers.empty () ? -1 : max_timer_period);
+        int rc = poll (&pollset [0], pollset.size (), timeout ? timeout : -1);
         if (rc == -1 && errno == EINTR)
             continue;
         errno_assert (rc != -1);
 
-        //  Handle timer.
-        if (!rc) {
-
-            //  Use local list of timers as timer handlers may fill new timers
-            //  into the original array.
-            timers_t t;
-            std::swap (timers, t);
-
-            //  Trigger all the timers.
-            for (timers_t::iterator it = t.begin (); it != t.end (); it ++)
-                (*it)->timer_event ();
 
+        //  If there are no events (i.e. it's a timeout) there's no point
+        //  in checking the pollset.
+        if (rc == 0)
             continue;
-        }
 
         for (pollset_t::size_type i = 0; i != pollset.size (); i++) {