From e645fc2693acc796304498909786b7b47005b429 Mon Sep 17 00:00:00 2001
From: Martin Lucina <martin@lucina.net>
Date: Mon, 23 Jan 2012 08:53:35 +0100
Subject: Imported Upstream version 2.1.3

---
 src/pgm_sender.cpp | 77 ++++++++++++++++++++++++++++++++++++++++++++++--------
 1 file changed, 66 insertions(+), 11 deletions(-)

(limited to 'src/pgm_sender.cpp')

diff --git a/src/pgm_sender.cpp b/src/pgm_sender.cpp
index 9aeb7a9..4d76433 100644
--- a/src/pgm_sender.cpp
+++ b/src/pgm_sender.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/>.
 */
 
@@ -36,6 +37,8 @@
 zmq::pgm_sender_t::pgm_sender_t (io_thread_t *parent_, 
       const options_t &options_) :
     io_object_t (parent_),
+    has_tx_timer (false),
+    has_rx_timer (false),
     encoder (0),
     pgm_socket (false, options_),
     options (options_),
@@ -53,12 +56,12 @@ int zmq::pgm_sender_t::init (bool udp_encapsulation_, const char *network_)
 
     out_buffer_size = pgm_socket.get_max_tsdu_size ();
     out_buffer = (unsigned char*) malloc (out_buffer_size);
-    zmq_assert (out_buffer);
+    alloc_assert (out_buffer);
 
     return rc;
 }
 
-void zmq::pgm_sender_t::plug (i_inout *inout_)
+void zmq::pgm_sender_t::plug (io_thread_t *io_thread_, i_inout *inout_)
 {
     //  Alocate 2 fds for PGM socket.
     int downlink_socket_fd = 0;
@@ -89,6 +92,16 @@ void zmq::pgm_sender_t::plug (i_inout *inout_)
 
 void zmq::pgm_sender_t::unplug ()
 {
+    if (has_rx_timer) {
+        cancel_timer (rx_timer_id);
+        has_rx_timer = false;
+    }
+
+    if (has_tx_timer) {
+        cancel_timer (tx_timer_id);
+        has_tx_timer = false;
+    }
+
     rm_fd (handle);
     rm_fd (uplink_handle);
     rm_fd (rdata_notify_handle);
@@ -96,13 +109,19 @@ void zmq::pgm_sender_t::unplug ()
     encoder.set_inout (NULL);
 }
 
-void zmq::pgm_sender_t::revive ()
+void zmq::pgm_sender_t::terminate ()
+{
+    unplug ();
+    delete this;
+}
+
+void zmq::pgm_sender_t::activate_out ()
 {
     set_pollout (handle);
     out_event ();
 }
 
-void zmq::pgm_sender_t::resume_input ()
+void zmq::pgm_sender_t::activate_in ()
 {
     zmq_assert (false);
 }
@@ -117,8 +136,18 @@ zmq::pgm_sender_t::~pgm_sender_t ()
 
 void zmq::pgm_sender_t::in_event ()
 {
-    //  In event on sender side means NAK or SPMR receiving from some peer.
+    if (has_rx_timer) {
+        cancel_timer (rx_timer_id);
+        has_rx_timer = false;
+    }
+
+    //  In-event on sender side means NAK or SPMR receiving from some peer.
     pgm_socket.process_upstream ();
+    if (errno == ENOMEM || errno == EBUSY) {
+        const long timeout = pgm_socket.get_rx_timeout ();
+        add_timer (timeout, rx_timer_id);
+        has_rx_timer = true;
+    }
 }
 
 void zmq::pgm_sender_t::out_event ()
@@ -146,14 +175,40 @@ void zmq::pgm_sender_t::out_event ()
         put_uint16 (out_buffer, offset == -1 ? 0xffff : (uint16_t) offset);
     }
 
+    if (has_tx_timer) {
+        cancel_timer (tx_timer_id);
+        has_tx_timer = false;
+    }
+
     //  Send the data.
     size_t nbytes = pgm_socket.send (out_buffer, write_size);
 
     //  We can write either all data or 0 which means rate limit reached.
-    if (nbytes == write_size)
+    if (nbytes == write_size) {
         write_size = 0;
-    else
+    } else {
         zmq_assert (nbytes == 0);
+
+        if (errno == ENOMEM) {
+            const long timeout = pgm_socket.get_tx_timeout ();
+            add_timer (timeout, tx_timer_id);
+            has_tx_timer = true;
+        } else
+            zmq_assert (errno == EBUSY);
+    }
+}
+
+void zmq::pgm_sender_t::timer_event (int token)
+{
+    //  Timer cancels on return by poller_base.
+    if (token == rx_timer_id) {
+        has_rx_timer = false;
+        in_event ();
+    } else if (token == tx_timer_id) {
+        has_tx_timer = false;
+        out_event ();
+    } else
+        zmq_assert (false);
 }
 
 #endif
-- 
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