From 597cc5edd624525563e6549dc0057eca2a51c81d Mon Sep 17 00:00:00 2001
From: Micah Anderson <micah@riseup.net>
Date: Tue, 11 Nov 2014 13:30:46 -0500
Subject: upgrade to new version

---
 src/poll.cpp | 179 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 179 insertions(+)
 create mode 100644 src/poll.cpp

(limited to 'src/poll.cpp')

diff --git a/src/poll.cpp b/src/poll.cpp
new file mode 100644
index 0000000..cf23afc
--- /dev/null
+++ b/src/poll.cpp
@@ -0,0 +1,179 @@
+/*
+    Copyright (c) 2007-2013 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 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
+    GNU Lesser General Public License for more details.
+
+    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/>.
+*/
+
+#include "poll.hpp"
+#if defined ZMQ_USE_POLL
+
+#include <sys/types.h>
+#include <sys/time.h>
+#include <poll.h>
+#include <algorithm>
+
+#include "poll.hpp"
+#include "err.hpp"
+#include "config.hpp"
+#include "i_poll_events.hpp"
+
+zmq::poll_t::poll_t () :
+    retired (false),
+    stopping (false)
+{
+}
+
+zmq::poll_t::~poll_t ()
+{
+    worker.stop ();
+}
+
+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);
+    zmq_assert (fd_table [fd_].index == retired_fd);
+
+    fd_table [fd_].index = pollset.size() - 1;
+    fd_table [fd_].events = events_;
+
+    //  Increase the load metric of the thread.
+    adjust_load (1);
+
+    return fd_;
+}
+
+void zmq::poll_t::rm_fd (handle_t handle_)
+{
+    fd_t index = fd_table [handle_].index;
+    zmq_assert (index != retired_fd);
+
+    //  Mark the fd as unused.
+    pollset [index].fd = retired_fd;
+    fd_table [handle_].index = retired_fd;
+    retired = true;
+
+    //  Decrease the load metric of the thread.
+    adjust_load (-1);
+}
+
+void zmq::poll_t::set_pollin (handle_t handle_)
+{
+    int index = fd_table [handle_].index;
+    pollset [index].events |= POLLIN;
+}
+
+void zmq::poll_t::reset_pollin (handle_t handle_)
+{
+    int index = fd_table [handle_].index;
+    pollset [index].events &= ~((short) POLLIN);
+}
+
+void zmq::poll_t::set_pollout (handle_t handle_)
+{
+    int index = fd_table [handle_].index;
+    pollset [index].events |= POLLOUT;
+}
+
+void zmq::poll_t::reset_pollout (handle_t handle_)
+{
+    int index = fd_table [handle_].index;
+    pollset [index].events &= ~((short) POLLOUT);
+}
+
+void zmq::poll_t::start ()
+{
+    worker.start (worker_routine, this);
+}
+
+void zmq::poll_t::stop ()
+{
+    stopping = true;
+}
+
+int zmq::poll_t::max_fds ()
+{
+    return -1;
+}
+
+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 (), timeout ? timeout : -1);
+        if (rc == -1) {
+            errno_assert (errno == EINTR);
+            continue;
+        }
+
+        //  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++) {
+
+            zmq_assert (!(pollset [i].revents & POLLNVAL));
+            if (pollset [i].fd == retired_fd)
+               continue;
+            if (pollset [i].revents & (POLLERR | POLLHUP))
+                fd_table [pollset [i].fd].events->in_event ();
+            if (pollset [i].fd == retired_fd)
+               continue;
+            if (pollset [i].revents & POLLOUT)
+                fd_table [pollset [i].fd].events->out_event ();
+            if (pollset [i].fd == retired_fd)
+               continue;
+            if (pollset [i].revents & POLLIN)
+                fd_table [pollset [i].fd].events->in_event ();
+        }
+
+        //  Clean up the pollset and update the fd_table accordingly.
+        if (retired) {
+            pollset_t::size_type i = 0;
+            while (i < pollset.size ()) {
+                if (pollset [i].fd == retired_fd)
+                    pollset.erase (pollset.begin () + i);
+                else {
+                    fd_table [pollset [i].fd].index = i;
+                    i ++;
+                }
+            }
+            retired = false;
+        }
+    }
+}
+
+void zmq::poll_t::worker_routine (void *arg_)
+{
+    ((poll_t*) arg_)->loop ();
+}
+
+#endif
-- 
cgit v1.2.3