1 files changed, 58 insertions, 34 deletions

diff --git a/src/signaler.cpp b/src/signaler.cpp
index d4a9214..08edb1e 100644
--- a/src/signaler.cpp
+++ b/src/signaler.cpp
@@ -4,16 +4,16 @@
     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/>.
 */
 
@@ -49,10 +49,10 @@ zmq::signaler_t::signaler_t ()
     struct sockaddr_in addr;
     SOCKET listener;
     int addrlen = sizeof (addr);
-           
+
     w = INVALID_SOCKET; 
     r = INVALID_SOCKET;
-    
+
     fd_t rcs = (listener = socket (AF_INET, SOCK_STREAM, 0));
     wsa_assert (rcs != INVALID_SOCKET);
 
@@ -60,25 +60,34 @@ zmq::signaler_t::signaler_t ()
     addr.sin_family = AF_INET;
     addr.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
     addr.sin_port = 0;
-            
+
     int rc = bind (listener, (const struct sockaddr*) &addr, sizeof (addr));
     wsa_assert (rc != SOCKET_ERROR);
 
     rc = getsockname (listener, (struct sockaddr*) &addr, &addrlen);
     wsa_assert (rc != SOCKET_ERROR);
-            
+
     //  Listen for incomming connections.
     rc = listen (listener, 1);
     wsa_assert (rc != SOCKET_ERROR);
-                     
+
     //  Create the socket.
     w = WSASocket (AF_INET, SOCK_STREAM, 0, NULL, 0,  0);
     wsa_assert (w != INVALID_SOCKET);
-                      
+
+    //  Increase signaler SNDBUF if requested in config.hpp.
+    if (signaler_sndbuf_size) {
+        int sndbuf = signaler_sndbuf_size;
+        socklen_t sndbuf_size = sizeof sndbuf;
+        rc = setsockopt (w, SOL_SOCKET, SO_SNDBUF, (const char *)&sndbuf,
+            sndbuf_size);
+        errno_assert (rc == 0);
+    }
+
     //  Connect to the remote peer.
     rc = connect (w, (sockaddr *) &addr, sizeof (addr));
     wsa_assert (rc != SOCKET_ERROR);
-                                    
+
     //  Accept connection from w.
     r = accept (listener, NULL, NULL);
     wsa_assert (r != INVALID_SOCKET);
@@ -112,7 +121,7 @@ void zmq::signaler_t::send (const command_t &cmd_)
     zmq_assert (rc == sizeof (command_t));
 }
 
-bool zmq::signaler_t::recv (command_t *cmd_, bool block_)
+int zmq::signaler_t::recv (command_t *cmd_, bool block_)
 {
     if (block_) {
 
@@ -122,10 +131,12 @@ bool zmq::signaler_t::recv (command_t *cmd_, bool block_)
         wsa_assert (rc != SOCKET_ERROR);
     }
 
-    bool result;
+    int err;
+    int result;
     int nbytes = ::recv (r, (char*) cmd_, sizeof (command_t), 0);
     if (nbytes == -1 && WSAGetLastError () == WSAEWOULDBLOCK) {
-        result = false;
+        err = EAGAIN;
+        result = -1;
     }
     else {
         wsa_assert (nbytes != -1);
@@ -133,7 +144,7 @@ bool zmq::signaler_t::recv (command_t *cmd_, bool block_)
         //  Check whether we haven't got half of a signal.
         zmq_assert (nbytes % sizeof (uint32_t) == 0);
 
-        result = true;
+        result = 0;
     }
 
     if (block_) {
@@ -144,6 +155,8 @@ bool zmq::signaler_t::recv (command_t *cmd_, bool block_)
         wsa_assert (rc != SOCKET_ERROR);
     }
 
+    if (result == -1)
+        errno = err;
     return result;
 }
 
@@ -166,6 +179,14 @@ zmq::signaler_t::signaler_t ()
         flags = 0;
     rc = fcntl (r, F_SETFL, flags | O_NONBLOCK);
     errno_assert (rc != -1);
+
+    //  Increase signaler SNDBUF if requested in config.hpp.
+    if (signaler_sndbuf_size) {
+        int sndbuf = signaler_sndbuf_size;
+        socklen_t sndbuf_size = sizeof sndbuf;
+        rc = setsockopt (w, SOL_SOCKET, SO_SNDBUF, &sndbuf, sndbuf_size);
+        errno_assert (rc == 0);
+    }
 }
 
 zmq::signaler_t::~signaler_t ()
@@ -184,7 +205,7 @@ void zmq::signaler_t::send (const command_t &cmd_)
     zmq_assert (nbytes == sizeof (command_t));
 }
 
-bool zmq::signaler_t::recv (command_t *cmd_, bool block_)
+int zmq::signaler_t::recv (command_t *cmd_, bool block_)
 {
     if (block_) {
 
@@ -196,13 +217,12 @@ bool zmq::signaler_t::recv (command_t *cmd_, bool block_)
         errno_assert (rc != -1);
     }
 
-    bool result;
-    ssize_t nbytes;
-    do {
-        nbytes = ::recv (r, (char*) cmd_, sizeof (command_t), 0);
-    } while (nbytes == -1 && errno == EINTR);
-    if (nbytes == -1 && errno == EAGAIN) {
-        result = false;
+    int err;
+    int result;
+    ssize_t nbytes = ::recv (r, (char*) cmd_, sizeof (command_t), 0);
+    if (nbytes == -1 && (errno == EAGAIN || errno == EINTR)) {
+        err = errno;
+        result = -1;
     }
     else {
         zmq_assert (nbytes != -1);
@@ -210,7 +230,7 @@ bool zmq::signaler_t::recv (command_t *cmd_, bool block_)
         //  Check whether we haven't got half of command.
         zmq_assert (nbytes == sizeof (command_t));
 
-        result = true;
+        result = 0;
     }
 
    if (block_) {
@@ -223,6 +243,8 @@ bool zmq::signaler_t::recv (command_t *cmd_, bool block_)
         errno_assert (rc != -1);
     }
 
+    if (result == -1)
+        errno = err;
     return result;
 }
 
@@ -243,6 +265,14 @@ zmq::signaler_t::signaler_t ()
     errno_assert (rc == 0);
     w = sv [0];
     r = sv [1];
+
+    //  Increase signaler SNDBUF if requested in config.hpp.
+    if (signaler_sndbuf_size) {
+        int sndbuf = signaler_sndbuf_size;
+        socklen_t sndbuf_size = sizeof sndbuf;
+        rc = setsockopt (w, SOL_SOCKET, SO_SNDBUF, &sndbuf, sndbuf_size);
+        errno_assert (rc == 0);
+    }
 }
 
 zmq::signaler_t::~signaler_t ()
@@ -266,24 +296,18 @@ void zmq::signaler_t::send (const command_t &cmd_)
     zmq_assert (nbytes == sizeof (command_t));
 }
 
-bool zmq::signaler_t::recv (command_t *cmd_, bool block_)
+int zmq::signaler_t::recv (command_t *cmd_, bool block_)
 {
     ssize_t nbytes;
-    do {
-        nbytes = ::recv (r, cmd_, sizeof (command_t),
-            block_ ? 0 : MSG_DONTWAIT);
-    } while (nbytes == -1 && errno == EINTR);
-
-    //  If there's no signal available return false.
-    if (nbytes == -1 && errno == EAGAIN)
-        return false;
-
+    nbytes = ::recv (r, cmd_, sizeof (command_t), block_ ? 0 : MSG_DONTWAIT);
+    if (nbytes == -1 && (errno == EAGAIN || errno == EINTR))
+        return -1;
     errno_assert (nbytes != -1);
 
     //  Check whether we haven't got half of command.
     zmq_assert (nbytes == sizeof (command_t));
 
-    return true;
+    return 0;
 }
 
 #endif