From e645fc2693acc796304498909786b7b47005b429 Mon Sep 17 00:00:00 2001 From: Martin Lucina Date: Mon, 23 Jan 2012 08:53:35 +0100 Subject: Imported Upstream version 2.1.3 --- src/signaler.cpp | 351 ------------------------------------------------------- 1 file changed, 351 deletions(-) delete mode 100644 src/signaler.cpp (limited to 'src/signaler.cpp') diff --git a/src/signaler.cpp b/src/signaler.cpp deleted file mode 100644 index d4a9214..0000000 --- a/src/signaler.cpp +++ /dev/null @@ -1,351 +0,0 @@ -/* - Copyright (c) 2007-2010 iMatix Corporation - - 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 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. - - You should have received a copy of the Lesser GNU General Public License - along with this program. If not, see . -*/ - -#include "signaler.hpp" -#include "platform.hpp" -#include "err.hpp" -#include "fd.hpp" -#include "ip.hpp" - -#if defined ZMQ_HAVE_OPENVMS -#include -#include -#elif defined ZMQ_HAVE_WINDOWS -#include "windows.hpp" -#else -#include -#include -#include -#endif - -zmq::fd_t zmq::signaler_t::get_fd () -{ - return r; -} - -#if defined ZMQ_HAVE_WINDOWS - -zmq::signaler_t::signaler_t () -{ - // Windows have no 'socketpair' function. CreatePipe is no good as pipe - // handles cannot be polled on. Here we create the socketpair by hand. - - 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); - - memset (&addr, 0, sizeof (addr)); - 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); - - // 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); - - // Set the read site of the pair to non-blocking mode. - unsigned long argp = 1; - rc = ioctlsocket (r, FIONBIO, &argp); - wsa_assert (rc != SOCKET_ERROR); - - // We don't need the listening socket anymore. Close it. - rc = closesocket (listener); - wsa_assert (rc != SOCKET_ERROR); -} - -zmq::signaler_t::~signaler_t () -{ - int rc = closesocket (w); - wsa_assert (rc != SOCKET_ERROR); - - rc = closesocket (r); - wsa_assert (rc != SOCKET_ERROR); -} - -void zmq::signaler_t::send (const command_t &cmd_) -{ - // TODO: Note that send is a blocking operation. - // How should we behave if the signal cannot be written to the signaler? - // Even worse: What if half of a command is written? - int rc = ::send (w, (char*) &cmd_, sizeof (command_t), 0); - win_assert (rc != SOCKET_ERROR); - zmq_assert (rc == sizeof (command_t)); -} - -bool zmq::signaler_t::recv (command_t *cmd_, bool block_) -{ - if (block_) { - - // Switch to blocking mode. - unsigned long argp = 0; - int rc = ioctlsocket (r, FIONBIO, &argp); - wsa_assert (rc != SOCKET_ERROR); - } - - bool result; - int nbytes = ::recv (r, (char*) cmd_, sizeof (command_t), 0); - if (nbytes == -1 && WSAGetLastError () == WSAEWOULDBLOCK) { - result = false; - } - else { - wsa_assert (nbytes != -1); - - // Check whether we haven't got half of a signal. - zmq_assert (nbytes % sizeof (uint32_t) == 0); - - result = true; - } - - if (block_) { - - // Switch back to non-blocking mode. - unsigned long argp = 1; - int rc = ioctlsocket (r, FIONBIO, &argp); - wsa_assert (rc != SOCKET_ERROR); - } - - return result; -} - -#elif defined ZMQ_HAVE_HPUX || defined ZMQ_HAVE_AIX - -#include -#include - -zmq::signaler_t::signaler_t () -{ - int sv [2]; - int rc = socketpair (AF_UNIX, SOCK_STREAM, 0, sv); - errno_assert (rc == 0); - w = sv [0]; - r = sv [1]; - - // Set the reader to non-blocking mode. - int flags = fcntl (r, F_GETFL, 0); - if (flags == -1) - flags = 0; - rc = fcntl (r, F_SETFL, flags | O_NONBLOCK); - errno_assert (rc != -1); -} - -zmq::signaler_t::~signaler_t () -{ - close (w); - close (r); -} - -void zmq::signaler_t::send (const command_t &cmd_) -{ - ssize_t nbytes; - do { - nbytes = ::send (w, &cmd_, sizeof (command_t), 0); - } while (nbytes == -1 && errno == EINTR); - errno_assert (nbytes != -1); - zmq_assert (nbytes == sizeof (command_t)); -} - -bool zmq::signaler_t::recv (command_t *cmd_, bool block_) -{ - if (block_) { - - // Set the reader to blocking mode. - int flags = fcntl (r, F_GETFL, 0); - if (flags == -1) - flags = 0; - int rc = fcntl (r, F_SETFL, flags & ~O_NONBLOCK); - 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; - } - else { - zmq_assert (nbytes != -1); - - // Check whether we haven't got half of command. - zmq_assert (nbytes == sizeof (command_t)); - - result = true; - } - - if (block_) { - - // Set the reader to non-blocking mode. - int flags = fcntl (r, F_GETFL, 0); - if (flags == -1) - flags = 0; - int rc = fcntl (r, F_SETFL, flags | O_NONBLOCK); - errno_assert (rc != -1); - } - - return result; -} - -#else - -#include -#include - -zmq::signaler_t::signaler_t () -{ - // Make sure that command can be written to the socket in atomic fashion. - // If this wasn't guaranteed, commands from different threads would be - // interleaved. - zmq_assert (sizeof (command_t) <= PIPE_BUF); - - int sv [2]; - int rc = socketpair (AF_UNIX, SOCK_STREAM, 0, sv); - errno_assert (rc == 0); - w = sv [0]; - r = sv [1]; -} - -zmq::signaler_t::~signaler_t () -{ - close (w); - close (r); -} - -void zmq::signaler_t::send (const command_t &cmd_) -{ - // TODO: Note that send is a blocking operation. - // How should we behave if the command cannot be written to the signaler? - ssize_t nbytes; - do { - nbytes = ::send (w, &cmd_, sizeof (command_t), 0); - } while (nbytes == -1 && errno == EINTR); - errno_assert (nbytes != -1); - - // This should never happen as we've already checked that command size is - // less than PIPE_BUF. - zmq_assert (nbytes == sizeof (command_t)); -} - -bool 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; - - errno_assert (nbytes != -1); - - // Check whether we haven't got half of command. - zmq_assert (nbytes == sizeof (command_t)); - - return true; -} - -#endif - -#if defined ZMQ_HAVE_OPENVMS - -int zmq::signaler_t::socketpair (int domain_, int type_, int protocol_, - int sv_ [2]) -{ - int listener; - sockaddr_in lcladdr; - socklen_t lcladdr_len; - int rc; - int on = 1; - - zmq_assert (type_ == SOCK_STREAM); - - // Fill in the localhost address (127.0.0.1). - memset (&lcladdr, 0, sizeof (lcladdr)); - lcladdr.sin_family = AF_INET; - lcladdr.sin_addr.s_addr = htonl (INADDR_LOOPBACK); - lcladdr.sin_port = 0; - - listener = socket (AF_INET, SOCK_STREAM, 0); - errno_assert (listener != -1); - - rc = setsockopt (listener, IPPROTO_TCP, TCP_NODELAY, &on, sizeof (on)); - errno_assert (rc != -1); - - rc = setsockopt (listener, IPPROTO_TCP, TCP_NODELACK, &on, sizeof (on)); - errno_assert (rc != -1); - - rc = bind(listener, (struct sockaddr*) &lcladdr, sizeof (lcladdr)); - errno_assert (rc != -1); - - lcladdr_len = sizeof (lcladdr); - - rc = getsockname (listener, (struct sockaddr*) &lcladdr, &lcladdr_len); - errno_assert (rc != -1); - - rc = listen (listener, 1); - errno_assert (rc != -1); - - sv_ [0] = socket (AF_INET, SOCK_STREAM, 0); - errno_assert (rc != -1); - - rc = setsockopt (sv_ [0], IPPROTO_TCP, TCP_NODELAY, &on, sizeof (on)); - errno_assert (rc != -1); - - rc = setsockopt (sv_ [0], IPPROTO_TCP, TCP_NODELACK, &on, sizeof (on)); - errno_assert (rc != -1); - - rc = connect (sv_ [0], (struct sockaddr*) &lcladdr, sizeof (lcladdr)); - errno_assert (rc != -1); - - sv_ [1] = accept (listener, NULL, NULL); - errno_assert (sv_ [1] != -1); - - close (listener); - - return 0; -} - -#endif - -- cgit v1.2.3