Initialize Tizen 2.3submit/tizen_2.3/20140531.1157412.3a_releasetizen_2.3

1 files changed, 1197 insertions, 0 deletions

diff --git a/src/socket_base.cpp b/src/socket_base.cpp
new file mode 100644
index 0000000..ca681c0
--- /dev/null
+++ b/src/socket_base.cpp
@@ -0,0 +1,1197 @@
+/*
+    Copyright (c) 2009-2011 250bpm s.r.o.
+    Copyright (c) 2007-2009 iMatix Corporation
+    Copyright (c) 2011 VMware, Inc.
+    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 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 <new>
+#include <string>
+#include <algorithm>
+
+#include "platform.hpp"
+
+#if defined ZMQ_HAVE_WINDOWS
+#include "windows.hpp"
+#if defined _MSC_VER
+#if defined WINCE
+#include <cmnintrin.h>
+#else
+#include <intrin.h>
+#endif
+#endif
+#else
+#include <unistd.h>
+#endif
+
+#include "socket_base.hpp"
+#include "tcp_listener.hpp"
+#include "ipc_listener.hpp"
+#include "tcp_connecter.hpp"
+#include "io_thread.hpp"
+#include "session_base.hpp"
+#include "config.hpp"
+#include "pipe.hpp"
+#include "err.hpp"
+#include "ctx.hpp"
+#include "platform.hpp"
+#include "likely.hpp"
+#include "msg.hpp"
+#include "address.hpp"
+#include "ipc_address.hpp"
+#include "tcp_address.hpp"
+#ifdef ZMQ_HAVE_OPENPGM
+#include "pgm_socket.hpp"
+#endif
+
+#include "pair.hpp"
+#include "pub.hpp"
+#include "sub.hpp"
+#include "req.hpp"
+#include "rep.hpp"
+#include "pull.hpp"
+#include "push.hpp"
+#include "dealer.hpp"
+#include "router.hpp"
+#include "xpub.hpp"
+#include "xsub.hpp"
+
+bool zmq::socket_base_t::check_tag ()
+{
+    return tag == 0xbaddecaf;
+}
+
+zmq::socket_base_t *zmq::socket_base_t::create (int type_, class ctx_t *parent_,
+    uint32_t tid_, int sid_)
+{
+    socket_base_t *s = NULL;
+    switch (type_) {
+
+    case ZMQ_PAIR:
+        s = new (std::nothrow) pair_t (parent_, tid_, sid_);
+        break;
+    case ZMQ_PUB:
+        s = new (std::nothrow) pub_t (parent_, tid_, sid_);
+        break;
+    case ZMQ_SUB:
+        s = new (std::nothrow) sub_t (parent_, tid_, sid_);
+        break;
+    case ZMQ_REQ:
+        s = new (std::nothrow) req_t (parent_, tid_, sid_);
+        break;
+    case ZMQ_REP:
+        s = new (std::nothrow) rep_t (parent_, tid_, sid_);
+        break;
+    case ZMQ_DEALER:
+        s = new (std::nothrow) dealer_t (parent_, tid_, sid_);
+        break;
+    case ZMQ_ROUTER:
+        s = new (std::nothrow) router_t (parent_, tid_, sid_);
+        break;     
+    case ZMQ_PULL:
+        s = new (std::nothrow) pull_t (parent_, tid_, sid_);
+        break;
+    case ZMQ_PUSH:
+        s = new (std::nothrow) push_t (parent_, tid_, sid_);
+        break;
+    case ZMQ_XPUB:
+        s = new (std::nothrow) xpub_t (parent_, tid_, sid_);
+        break;
+    case ZMQ_XSUB:
+        s = new (std::nothrow) xsub_t (parent_, tid_, sid_);
+        break;
+    default:
+        errno = EINVAL;
+        return NULL;
+    }
+    alloc_assert (s);
+    return s;
+}
+
+zmq::socket_base_t::socket_base_t (ctx_t *parent_, uint32_t tid_, int sid_) :
+    own_t (parent_, tid_),
+    tag (0xbaddecaf),
+    ctx_terminated (false),
+    destroyed (false),
+    last_tsc (0),
+    ticks (0),
+    rcvmore (false),
+    monitor_socket (NULL),
+    monitor_events (0)
+{
+    options.socket_id = sid_;
+}
+
+zmq::socket_base_t::~socket_base_t ()
+{
+    stop_monitor ();
+    zmq_assert (destroyed);
+}
+
+zmq::mailbox_t *zmq::socket_base_t::get_mailbox ()
+{
+    return &mailbox;
+}
+
+void zmq::socket_base_t::stop ()
+{
+    //  Called by ctx when it is terminated (zmq_term).
+    //  'stop' command is sent from the threads that called zmq_term to
+    //  the thread owning the socket. This way, blocking call in the
+    //  owner thread can be interrupted.
+    send_stop ();
+}
+
+int zmq::socket_base_t::parse_uri (const char *uri_,
+                        std::string &protocol_, std::string &address_)
+{
+    zmq_assert (uri_ != NULL);
+
+    std::string uri (uri_);
+    std::string::size_type pos = uri.find ("://");
+    if (pos == std::string::npos) {
+        errno = EINVAL;
+        return -1;
+    }
+    protocol_ = uri.substr (0, pos);
+    address_ = uri.substr (pos + 3);
+    
+    if (protocol_.empty () || address_.empty ()) {
+        errno = EINVAL;
+        return -1;
+    }
+    return 0;
+}
+
+int zmq::socket_base_t::check_protocol (const std::string &protocol_)
+{
+    //  First check out whether the protcol is something we are aware of.
+    if (protocol_ != "inproc" && protocol_ != "ipc" && protocol_ != "tcp" &&
+          protocol_ != "pgm" && protocol_ != "epgm") {
+        errno = EPROTONOSUPPORT;
+        return -1;
+    }
+
+    //  If 0MQ is not compiled with OpenPGM, pgm and epgm transports
+    //  are not avaialble.
+#if !defined ZMQ_HAVE_OPENPGM
+    if (protocol_ == "pgm" || protocol_ == "epgm") {
+        errno = EPROTONOSUPPORT;
+        return -1;
+    }
+#endif
+
+    //  IPC transport is not available on Windows and OpenVMS.
+#if defined ZMQ_HAVE_WINDOWS || defined ZMQ_HAVE_OPENVMS
+    if (protocol_ == "ipc") {
+        //  Unknown protocol.
+        errno = EPROTONOSUPPORT;
+        return -1;
+    }
+#endif
+
+    //  Check whether socket type and transport protocol match.
+    //  Specifically, multicast protocols can't be combined with
+    //  bi-directional messaging patterns (socket types).
+    if ((protocol_ == "pgm" || protocol_ == "epgm") &&
+          options.type != ZMQ_PUB && options.type != ZMQ_SUB &&
+          options.type != ZMQ_XPUB && options.type != ZMQ_XSUB) {
+        errno = ENOCOMPATPROTO;
+        return -1;
+    }
+
+    //  Protocol is available.
+    return 0;
+}
+
+void zmq::socket_base_t::attach_pipe (pipe_t *pipe_, bool icanhasall_)
+{
+    //  First, register the pipe so that we can terminate it later on.
+    pipe_->set_event_sink (this);
+    pipes.push_back (pipe_);
+    
+    //  Let the derived socket type know about new pipe.
+    xattach_pipe (pipe_, icanhasall_);
+
+    //  If the socket is already being closed, ask any new pipes to terminate
+    //  straight away.
+    if (is_terminating ()) {
+        register_term_acks (1);
+        pipe_->terminate (false);
+    }
+}
+
+int zmq::socket_base_t::setsockopt (int option_, const void *optval_,
+    size_t optvallen_)
+{
+    if (unlikely (ctx_terminated)) {
+        errno = ETERM;
+        return -1;
+    }
+
+    //  First, check whether specific socket type overloads the option.
+    int rc = xsetsockopt (option_, optval_, optvallen_);
+    if (rc == 0 || errno != EINVAL)
+        return rc;
+
+    //  If the socket type doesn't support the option, pass it to
+    //  the generic option parser.
+    return options.setsockopt (option_, optval_, optvallen_);
+}
+
+int zmq::socket_base_t::getsockopt (int option_, void *optval_,
+    size_t *optvallen_)
+{
+    if (unlikely (ctx_terminated)) {
+        errno = ETERM;
+        return -1;
+    }
+
+    if (option_ == ZMQ_RCVMORE) {
+        if (*optvallen_ < sizeof (int)) {
+            errno = EINVAL;
+            return -1;
+        }
+        *((int*) optval_) = rcvmore ? 1 : 0;
+        *optvallen_ = sizeof (int);
+        return 0;
+    }
+
+    if (option_ == ZMQ_FD) {
+        if (*optvallen_ < sizeof (fd_t)) {
+            errno = EINVAL;
+            return -1;
+        }
+        *((fd_t*) optval_) = mailbox.get_fd ();
+        *optvallen_ = sizeof (fd_t);
+        return 0;
+    }
+
+    if (option_ == ZMQ_EVENTS) {
+        if (*optvallen_ < sizeof (int)) {
+            errno = EINVAL;
+            return -1;
+        }
+        int rc = process_commands (0, false);
+        if (rc != 0 && (errno == EINTR || errno == ETERM))
+            return -1;
+        errno_assert (rc == 0);
+        *((int*) optval_) = 0;
+        if (has_out ())
+            *((int*) optval_) |= ZMQ_POLLOUT;
+        if (has_in ())
+            *((int*) optval_) |= ZMQ_POLLIN;
+        *optvallen_ = sizeof (int);
+        return 0;
+    }
+
+    return options.getsockopt (option_, optval_, optvallen_);
+}
+
+int zmq::socket_base_t::bind (const char *addr_)
+{
+    if (unlikely (ctx_terminated)) {
+        errno = ETERM;
+        return -1;
+    }
+
+    //  Process pending commands, if any.
+    int rc = process_commands (0, false);
+    if (unlikely (rc != 0))
+        return -1;
+
+    //  Parse addr_ string.
+    std::string protocol;
+    std::string address;
+    rc = parse_uri (addr_, protocol, address);
+    if (rc != 0)
+        return -1;
+
+    rc = check_protocol (protocol);
+    if (rc != 0)
+        return -1;
+
+    if (protocol == "inproc") {
+        endpoint_t endpoint = {this, options};
+        int rc = register_endpoint (addr_, endpoint);
+        if (rc == 0) {
+            // Save last endpoint URI
+            options.last_endpoint.assign (addr_);
+        }
+        return rc;
+    }
+
+    if (protocol == "pgm" || protocol == "epgm") {
+        //  For convenience's sake, bind can be used interchageable with
+        //  connect for PGM and EPGM transports.
+        return connect (addr_);
+    }
+
+    //  Remaining trasnports require to be run in an I/O thread, so at this
+    //  point we'll choose one.
+    io_thread_t *io_thread = choose_io_thread (options.affinity);
+    if (!io_thread) {
+        errno = EMTHREAD;
+        return -1;
+    }
+
+    if (protocol == "tcp") {
+        tcp_listener_t *listener = new (std::nothrow) tcp_listener_t (
+            io_thread, this, options);
+        alloc_assert (listener);
+        int rc = listener->set_address (address.c_str ());
+        if (rc != 0) {
+            delete listener;
+            event_bind_failed (address, zmq_errno());
+            return -1;
+        }
+
+        // Save last endpoint URI
+        listener->get_address (options.last_endpoint);
+
+        add_endpoint (addr_, (own_t *) listener);
+        return 0;
+    }
+
+#if !defined ZMQ_HAVE_WINDOWS && !defined ZMQ_HAVE_OPENVMS
+    if (protocol == "ipc") {
+        ipc_listener_t *listener = new (std::nothrow) ipc_listener_t (
+            io_thread, this, options);
+        alloc_assert (listener);
+        int rc = listener->set_address (address.c_str ());
+        if (rc != 0) {
+            delete listener;
+            event_bind_failed (address, zmq_errno());
+            return -1;
+        }
+
+        // Save last endpoint URI
+        listener->get_address (options.last_endpoint);
+
+        add_endpoint (addr_, (own_t *) listener);
+        return 0;
+    }
+#endif
+
+    zmq_assert (false);
+    return -1;
+}
+
+int zmq::socket_base_t::connect (const char *addr_)
+{
+    if (unlikely (ctx_terminated)) {
+        errno = ETERM;
+        return -1;
+    }
+
+    //  Process pending commands, if any.
+    int rc = process_commands (0, false);
+    if (unlikely (rc != 0))
+        return -1;
+
+    //  Parse addr_ string.
+    std::string protocol;
+    std::string address;
+    rc = parse_uri (addr_, protocol, address);
+    if (rc != 0)
+        return -1;
+
+    rc = check_protocol (protocol);
+    if (rc != 0)
+        return -1;
+
+    if (protocol == "inproc") {
+
+        //  TODO: inproc connect is specific with respect to creating pipes
+        //  as there's no 'reconnect' functionality implemented. Once that
+        //  is in place we should follow generic pipe creation algorithm.
+
+        //  Find the peer endpoint.
+        endpoint_t peer = find_endpoint (addr_);
+        if (!peer.socket)
+            return -1;
+
+        // The total HWM for an inproc connection should be the sum of
+        // the binder's HWM and the connector's HWM.
+        int sndhwm = 0;
+        if (options.sndhwm != 0 && peer.options.rcvhwm != 0)
+            sndhwm = options.sndhwm + peer.options.rcvhwm;
+        int rcvhwm = 0;
+        if (options.rcvhwm != 0 && peer.options.sndhwm != 0)
+            rcvhwm = options.rcvhwm + peer.options.sndhwm;
+
+        //  Create a bi-directional pipe to connect the peers.
+        object_t *parents [2] = {this, peer.socket};
+        pipe_t *pipes [2] = {NULL, NULL};
+        int hwms [2] = {sndhwm, rcvhwm};
+        bool delays [2] = {options.delay_on_disconnect, options.delay_on_close};
+        int rc = pipepair (parents, pipes, hwms, delays);
+        errno_assert (rc == 0);
+
+        //  Attach local end of the pipe to this socket object.
+        attach_pipe (pipes [0]);
+
+        //  If required, send the identity of the local socket to the peer.
+        if (peer.options.recv_identity) {
+            msg_t id;
+            rc = id.init_size (options.identity_size);
+            errno_assert (rc == 0);
+            memcpy (id.data (), options.identity, options.identity_size);
+            id.set_flags (msg_t::identity);
+            bool written = pipes [0]->write (&id);
+            zmq_assert (written);
+            pipes [0]->flush ();
+        }
+
+        //  If required, send the identity of the peer to the local socket.
+        if (options.recv_identity) {
+            msg_t id;
+            rc = id.init_size (peer.options.identity_size);
+            errno_assert (rc == 0);
+            memcpy (id.data (), peer.options.identity, peer.options.identity_size);
+            id.set_flags (msg_t::identity);
+            bool written = pipes [1]->write (&id);
+            zmq_assert (written);
+            pipes [1]->flush ();
+        }
+
+        //  Attach remote end of the pipe to the peer socket. Note that peer's
+        //  seqnum was incremented in find_endpoint function. We don't need it
+        //  increased here.
+        send_bind (peer.socket, pipes [1], false);
+
+        // Save last endpoint URI
+        options.last_endpoint.assign (addr_);
+
+        return 0;
+    }
+
+    //  Choose the I/O thread to run the session in.
+    io_thread_t *io_thread = choose_io_thread (options.affinity);
+    if (!io_thread) {
+        errno = EMTHREAD;
+        return -1;
+    }
+
+    address_t *paddr = new (std::nothrow) address_t (protocol, address);
+    alloc_assert (paddr);
+
+    //  Resolve address (if needed by the protocol)
+    if (protocol == "tcp") {
+        paddr->resolved.tcp_addr = new (std::nothrow) tcp_address_t ();
+        alloc_assert (paddr->resolved.tcp_addr);
+        int rc = paddr->resolved.tcp_addr->resolve (
+            address.c_str (), false, options.ipv4only ? true : false);
+        if (rc != 0) {
+            delete paddr;
+            return -1;
+        }
+    }
+#if !defined ZMQ_HAVE_WINDOWS && !defined ZMQ_HAVE_OPENVMS
+    else
+    if (protocol == "ipc") {
+        paddr->resolved.ipc_addr = new (std::nothrow) ipc_address_t ();
+        alloc_assert (paddr->resolved.ipc_addr);
+        int rc = paddr->resolved.ipc_addr->resolve (address.c_str ());
+        if (rc != 0) {
+            delete paddr;
+            return -1;
+        }
+    }
+#endif
+#ifdef ZMQ_HAVE_OPENPGM
+    if (protocol == "pgm" || protocol == "epgm") {
+        struct pgm_addrinfo_t *res = NULL;
+        uint16_t port_number = 0;
+        int rc = pgm_socket_t::init_address(address.c_str(), &res, &port_number);
+        if (res != NULL)
+            pgm_freeaddrinfo (res);
+        if (rc != 0 || port_number == 0)
+            return -1;
+    }
+#endif
+    //  Create session.
+    session_base_t *session = session_base_t::create (io_thread, true, this,
+        options, paddr);
+    errno_assert (session);
+
+    //  PGM does not support subscription forwarding; ask for all data to be
+    //  sent to this pipe.
+    bool icanhasall = protocol == "pgm" || protocol == "epgm";
+
+    if (options.delay_attach_on_connect != 1 || icanhasall) {
+        //  Create a bi-directional pipe.
+        object_t *parents [2] = {this, session};
+        pipe_t *pipes [2] = {NULL, NULL};
+        int hwms [2] = {options.sndhwm, options.rcvhwm};
+        bool delays [2] = {options.delay_on_disconnect, options.delay_on_close};
+        rc = pipepair (parents, pipes, hwms, delays);
+        errno_assert (rc == 0);
+
+        //  Attach local end of the pipe to the socket object.
+        attach_pipe (pipes [0], icanhasall);
+
+        //  Attach remote end of the pipe to the session object later on.
+        session->attach_pipe (pipes [1]);
+    }
+
+    //  Save last endpoint URI
+    paddr->to_string (options.last_endpoint);
+
+    add_endpoint (addr_, (own_t *) session);
+    return 0;
+}
+
+void zmq::socket_base_t::add_endpoint (const char *addr_, own_t *endpoint_)
+{
+    //  Activate the session. Make it a child of this socket.
+    launch_child (endpoint_);
+    endpoints.insert (endpoints_t::value_type (std::string (addr_), endpoint_));
+}
+
+int zmq::socket_base_t::term_endpoint (const char *addr_)
+{
+    //  Check whether the library haven't been shut down yet.
+    if (unlikely (ctx_terminated)) {
+        errno = ETERM;
+        return -1;
+    }
+
+    //  Check whether endpoint address passed to the function is valid.
+    if (unlikely (!addr_)) {
+        errno = EINVAL;
+        return -1;
+    }
+
+    //  Process pending commands, if any, since there could be pending unprocessed process_own()'s
+    //  (from launch_child() for example) we're asked to terminate now.
+    int rc = process_commands (0, false);
+    if (unlikely (rc != 0))
+        return -1;
+
+    //  Find the endpoints range (if any) corresponding to the addr_ string.
+    std::pair <endpoints_t::iterator, endpoints_t::iterator> range = endpoints.equal_range (std::string (addr_));
+    if (range.first == range.second)
+        return -1;
+
+    for (endpoints_t::iterator it = range.first; it != range.second; ++it)
+        term_child (it->second);
+    endpoints.erase (range.first, range.second);
+    return 0;
+}
+
+int zmq::socket_base_t::send (msg_t *msg_, int flags_)
+{
+    //  Check whether the library haven't been shut down yet.
+    if (unlikely (ctx_terminated)) {
+        errno = ETERM;
+        return -1;
+    }
+
+    //  Check whether message passed to the function is valid.
+    if (unlikely (!msg_ || !msg_->check ())) {
+        errno = EFAULT;
+        return -1;
+    }
+
+    //  Process pending commands, if any.
+    int rc = process_commands (0, true);
+    if (unlikely (rc != 0))
+        return -1;
+
+    //  Clear any user-visible flags that are set on the message.
+    msg_->reset_flags (msg_t::more);
+
+    //  At this point we impose the flags on the message.
+    if (flags_ & ZMQ_SNDMORE)
+        msg_->set_flags (msg_t::more);
+
+    //  Try to send the message.
+    rc = xsend (msg_, flags_);
+    if (rc == 0)
+        return 0;
+    if (unlikely (errno != EAGAIN))
+        return -1;
+
+    //  In case of non-blocking send we'll simply propagate
+    //  the error - including EAGAIN - up the stack.
+    if (flags_ & ZMQ_DONTWAIT || options.sndtimeo == 0)
+        return -1;
+
+    //  Compute the time when the timeout should occur.
+    //  If the timeout is infite, don't care. 
+    int timeout = options.sndtimeo;
+    uint64_t end = timeout < 0 ? 0 : (clock.now_ms () + timeout);
+
+    //  Oops, we couldn't send the message. Wait for the next
+    //  command, process it and try to send the message again.
+    //  If timeout is reached in the meantime, return EAGAIN.
+    while (true) {
+        if (unlikely (process_commands (timeout, false) != 0))
+            return -1;
+        rc = xsend (msg_, flags_);
+        if (rc == 0)
+            break;
+        if (unlikely (errno != EAGAIN))
+            return -1;
+        if (timeout > 0) {
+            timeout = (int) (end - clock.now_ms ());
+            if (timeout <= 0) {
+                errno = EAGAIN;
+                return -1;
+            }
+        }
+    }
+    return 0;
+}
+
+int zmq::socket_base_t::recv (msg_t *msg_, int flags_)
+{
+    //  Check whether the library haven't been shut down yet.
+    if (unlikely (ctx_terminated)) {
+        errno = ETERM;
+        return -1;
+    }
+
+    //  Check whether message passed to the function is valid.
+    if (unlikely (!msg_ || !msg_->check ())) {
+        errno = EFAULT;
+        return -1;
+    }
+
+    //  Once every inbound_poll_rate messages check for signals and process
+    //  incoming commands. This happens only if we are not polling altogether
+    //  because there are messages available all the time. If poll occurs,
+    //  ticks is set to zero and thus we avoid this code.
+    //
+    //  Note that 'recv' uses different command throttling algorithm (the one
+    //  described above) from the one used by 'send'. This is because counting
+    //  ticks is more efficient than doing RDTSC all the time.
+    if (++ticks == inbound_poll_rate) {
+        if (unlikely (process_commands (0, false) != 0))
+            return -1;
+        ticks = 0;
+    }
+
+    //  Get the message.
+    int rc = xrecv (msg_, flags_);
+    if (unlikely (rc != 0 && errno != EAGAIN))
+        return -1;
+
+    //  If we have the message, return immediately.
+    if (rc == 0) {
+        extract_flags (msg_);
+        return 0;
+    }
+
+    //  If the message cannot be fetched immediately, there are two scenarios.
+    //  For non-blocking recv, commands are processed in case there's an
+    //  activate_reader command already waiting int a command pipe.
+    //  If it's not, return EAGAIN.
+    if (flags_ & ZMQ_DONTWAIT || options.rcvtimeo == 0) {
+        if (unlikely (process_commands (0, false) != 0))
+            return -1;
+        ticks = 0;
+
+        rc = xrecv (msg_, flags_);
+        if (rc < 0)
+            return rc;
+        extract_flags (msg_);
+        return 0;
+    }
+
+    //  Compute the time when the timeout should occur.
+    //  If the timeout is infite, don't care. 
+    int timeout = options.rcvtimeo;
+    uint64_t end = timeout < 0 ? 0 : (clock.now_ms () + timeout);
+
+    //  In blocking scenario, commands are processed over and over again until
+    //  we are able to fetch a message.
+    bool block = (ticks != 0);
+    while (true) {
+        if (unlikely (process_commands (block ? timeout : 0, false) != 0))
+            return -1;
+        rc = xrecv (msg_, flags_);
+        if (rc == 0) {
+            ticks = 0;
+            break;
+        }
+        if (unlikely (errno != EAGAIN))
+            return -1;
+        block = true;
+        if (timeout > 0) {
+            timeout = (int) (end - clock.now_ms ());
+            if (timeout <= 0) {
+                errno = EAGAIN;
+                return -1;
+            }
+        }
+    }
+
+    extract_flags (msg_);
+    return 0;
+}
+
+int zmq::socket_base_t::close ()
+{
+    //  Mark the socket as dead
+    tag = 0xdeadbeef;
+    
+    //  Transfer the ownership of the socket from this application thread
+    //  to the reaper thread which will take care of the rest of shutdown
+    //  process.
+    send_reap (this);
+
+    return 0;
+}
+
+bool zmq::socket_base_t::has_in ()
+{
+    return xhas_in ();
+}
+
+bool zmq::socket_base_t::has_out ()
+{
+    return xhas_out ();
+}
+
+void zmq::socket_base_t::start_reaping (poller_t *poller_)
+{
+    //  Plug the socket to the reaper thread.
+    poller = poller_;
+    handle = poller->add_fd (mailbox.get_fd (), this);
+    poller->set_pollin (handle);
+
+    //  Initialise the termination and check whether it can be deallocated
+    //  immediately.
+    terminate ();
+    check_destroy ();
+}
+
+int zmq::socket_base_t::process_commands (int timeout_, bool throttle_)
+{
+    int rc;
+    command_t cmd;
+    if (timeout_ != 0) {
+
+        //  If we are asked to wait, simply ask mailbox to wait.
+        rc = mailbox.recv (&cmd, timeout_);
+    }
+    else {
+
+        //  If we are asked not to wait, check whether we haven't processed
+        //  commands recently, so that we can throttle the new commands.
+
+        //  Get the CPU's tick counter. If 0, the counter is not available.
+        uint64_t tsc = zmq::clock_t::rdtsc ();
+
+        //  Optimised version of command processing - it doesn't have to check
+        //  for incoming commands each time. It does so only if certain time
+        //  elapsed since last command processing. Command delay varies
+        //  depending on CPU speed: It's ~1ms on 3GHz CPU, ~2ms on 1.5GHz CPU
+        //  etc. The optimisation makes sense only on platforms where getting
+        //  a timestamp is a very cheap operation (tens of nanoseconds).
+        if (tsc && throttle_) {
+
+            //  Check whether TSC haven't jumped backwards (in case of migration
+            //  between CPU cores) and whether certain time have elapsed since
+            //  last command processing. If it didn't do nothing.
+            if (tsc >= last_tsc && tsc - last_tsc <= max_command_delay)
+                return 0;
+            last_tsc = tsc;
+        }
+
+        //  Check whether there are any commands pending for this thread.
+        rc = mailbox.recv (&cmd, 0);
+    }
+
+    //  Process all available commands.
+    while (rc == 0) {
+        cmd.destination->process_command (cmd);
+        rc = mailbox.recv (&cmd, 0);
+    }
+
+    if (errno == EINTR)
+        return -1;
+
+    zmq_assert (errno == EAGAIN);
+
+    if (ctx_terminated) {
+        errno = ETERM;
+        return -1;
+    }
+
+    return 0;
+}
+
+void zmq::socket_base_t::process_stop ()
+{
+    //  Here, someone have called zmq_term while the socket was still alive.
+    //  We'll remember the fact so that any blocking call is interrupted and any
+    //  further attempt to use the socket will return ETERM. The user is still
+    //  responsible for calling zmq_close on the socket though!
+    stop_monitor ();
+    ctx_terminated = true;
+}
+
+void zmq::socket_base_t::process_bind (pipe_t *pipe_)
+{
+    attach_pipe (pipe_);
+}
+
+void zmq::socket_base_t::process_term (int linger_)
+{
+    //  Unregister all inproc endpoints associated with this socket.
+    //  Doing this we make sure that no new pipes from other sockets (inproc)
+    //  will be initiated.
+    unregister_endpoints (this);
+
+    //  Ask all attached pipes to terminate.
+    for (pipes_t::size_type i = 0; i != pipes.size (); ++i)
+        pipes [i]->terminate (false);
+    register_term_acks ((int) pipes.size ());
+
+    //  Continue the termination process immediately.
+    own_t::process_term (linger_);
+}
+
+void zmq::socket_base_t::process_destroy ()
+{
+    destroyed = true;
+}
+
+int zmq::socket_base_t::xsetsockopt (int, const void *, size_t)
+{
+    errno = EINVAL;
+    return -1;
+}
+
+bool zmq::socket_base_t::xhas_out ()
+{
+    return false;
+}
+
+int zmq::socket_base_t::xsend (msg_t *, int)
+{
+    errno = ENOTSUP;
+    return -1;
+}
+
+bool zmq::socket_base_t::xhas_in ()
+{
+    return false;
+}
+
+int zmq::socket_base_t::xrecv (msg_t *, int)
+{
+    errno = ENOTSUP;
+    return -1;
+}
+
+void zmq::socket_base_t::xread_activated (pipe_t *)
+{
+    zmq_assert (false);
+}
+void zmq::socket_base_t::xwrite_activated (pipe_t *)
+{
+    zmq_assert (false);
+}
+
+void zmq::socket_base_t::xhiccuped (pipe_t *)
+{
+    zmq_assert (false);
+}
+
+void zmq::socket_base_t::in_event ()
+{
+    //  This function is invoked only once the socket is running in the context
+    //  of the reaper thread. Process any commands from other threads/sockets
+    //  that may be available at the moment. Ultimately, the socket will
+    //  be destroyed.
+    process_commands (0, false);
+    check_destroy ();
+}
+
+void zmq::socket_base_t::out_event ()
+{
+    zmq_assert (false);
+}
+
+void zmq::socket_base_t::timer_event (int)
+{
+    zmq_assert (false);
+}
+
+void zmq::socket_base_t::check_destroy ()
+{
+    //  If the object was already marked as destroyed, finish the deallocation.
+    if (destroyed) {
+
+        //  Remove the socket from the reaper's poller.
+        poller->rm_fd (handle);
+
+        //  Remove the socket from the context.
+        destroy_socket (this);
+
+        //  Notify the reaper about the fact.
+        send_reaped ();
+
+        //  Deallocate.
+        own_t::process_destroy ();
+    }
+}
+
+void zmq::socket_base_t::read_activated (pipe_t *pipe_)
+{
+    xread_activated (pipe_);
+}
+
+void zmq::socket_base_t::write_activated (pipe_t *pipe_)
+{
+    xwrite_activated (pipe_);
+}
+
+void zmq::socket_base_t::hiccuped (pipe_t *pipe_)
+{
+    if (options.delay_attach_on_connect == 1)
+        pipe_->terminate (false);
+    else
+        // Notify derived sockets of the hiccup
+        xhiccuped (pipe_);
+}
+
+void zmq::socket_base_t::terminated (pipe_t *pipe_)
+{
+    //  Notify the specific socket type about the pipe termination.
+    xterminated (pipe_);
+
+    //  Remove the pipe from the list of attached pipes and confirm its
+    //  termination if we are already shutting down.
+    pipes.erase (pipe_);
+    if (is_terminating ())
+        unregister_term_ack ();
+}
+
+void zmq::socket_base_t::extract_flags (msg_t *msg_)
+{
+    //  Test whether IDENTITY flag is valid for this socket type.
+    if (unlikely (msg_->flags () & msg_t::identity))
+        zmq_assert (options.recv_identity);
+  
+    //  Remove MORE flag.
+    rcvmore = msg_->flags () & msg_t::more ? true : false;
+}
+
+int zmq::socket_base_t::monitor (const char *addr_, int events_)
+{
+    int rc;
+    if (unlikely (ctx_terminated)) {
+        errno = ETERM;
+        return -1;
+    }
+
+    // Support deregistering monitoring endpoints as well
+    if (addr_ == NULL) {
+        stop_monitor ();
+        return 0;
+    }
+
+    //  Parse addr_ string.
+    std::string protocol;
+    std::string address;
+    rc = parse_uri (addr_, protocol, address);
+    if (rc != 0)
+        return -1;
+
+    rc = check_protocol (protocol);
+    if (rc != 0)
+        return -1;
+
+    // Event notification only supported over inproc://
+    if (protocol != "inproc") {
+        errno = EPROTONOSUPPORT;
+        return -1;
+    }
+
+    // Register events to monitor
+    monitor_events = events_;
+    monitor_socket = zmq_socket (get_ctx (), ZMQ_PAIR);
+    if (monitor_socket == NULL)
+        return -1;
+
+    // Never block context termination on pending event messages
+    int linger = 0;
+    rc = zmq_setsockopt (monitor_socket, ZMQ_LINGER, &linger, sizeof (linger));
+    if (rc == -1)
+         stop_monitor ();
+
+    // Spawn the monitor socket endpoint
+    rc = zmq_bind (monitor_socket, addr_);
+    if (rc == -1)
+         stop_monitor ();
+    return rc;
+}
+
+void zmq::socket_base_t::event_connected (std::string &addr_, int fd_)
+{
+    if (monitor_events & ZMQ_EVENT_CONNECTED) {
+        zmq_event_t event;
+        event.event = ZMQ_EVENT_CONNECTED;
+        event.data.connected.addr = (char *) malloc (addr_.size () + 1);
+        copy_monitor_address (event.data.connected.addr, addr_);
+        event.data.connected.fd = fd_;
+        monitor_event (event);
+    }
+}
+
+void zmq::socket_base_t::event_connect_delayed (std::string &addr_, int err_)
+{
+    if (monitor_events & ZMQ_EVENT_CONNECT_DELAYED) {
+        zmq_event_t event;
+        event.event = ZMQ_EVENT_CONNECT_DELAYED;
+        event.data.connect_delayed.addr = (char *) malloc (addr_.size () + 1);
+        copy_monitor_address (event.data.connect_delayed.addr, addr_);
+        event.data.connect_delayed.err = err_;
+        monitor_event (event);
+    }
+}
+
+void zmq::socket_base_t::event_connect_retried (std::string &addr_, int interval_)
+{
+    if (monitor_events & ZMQ_EVENT_CONNECT_RETRIED) {
+        zmq_event_t event;
+        event.event = ZMQ_EVENT_CONNECT_RETRIED;
+        event.data.connect_retried.addr = (char *) malloc (addr_.size () + 1);
+        copy_monitor_address (event.data.connect_retried.addr, addr_);
+        event.data.connect_retried.interval = interval_;
+        monitor_event (event);
+    }
+}
+
+void zmq::socket_base_t::event_listening (std::string &addr_, int fd_)
+{
+    if (monitor_events & ZMQ_EVENT_LISTENING) {
+        zmq_event_t event;
+        event.event = ZMQ_EVENT_LISTENING;
+        event.data.listening.addr = (char *) malloc (addr_.size () + 1);
+        copy_monitor_address (event.data.listening.addr, addr_);
+        event.data.listening.fd = fd_;
+        monitor_event (event);
+    }
+}
+
+void zmq::socket_base_t::event_bind_failed (std::string &addr_, int err_)
+{
+    if (monitor_events & ZMQ_EVENT_BIND_FAILED) {
+        zmq_event_t event;
+        event.event = ZMQ_EVENT_BIND_FAILED;
+        event.data.bind_failed.addr = (char *) malloc (addr_.size () + 1);
+        copy_monitor_address (event.data.bind_failed.addr, addr_);
+        event.data.bind_failed.err = err_;
+        monitor_event (event);
+    }
+}
+
+void zmq::socket_base_t::event_accepted (std::string &addr_, int fd_)
+{
+    if (monitor_events & ZMQ_EVENT_ACCEPTED) {
+        zmq_event_t event;
+        event.event = ZMQ_EVENT_ACCEPTED;
+        event.data.accepted.addr = (char *) malloc (addr_.size () + 1);
+        copy_monitor_address (event.data.accepted.addr, addr_);
+        event.data.accepted.fd = fd_;
+        monitor_event (event);
+    }
+}
+
+void zmq::socket_base_t::event_accept_failed (std::string &addr_, int err_)
+{
+    if (monitor_events & ZMQ_EVENT_ACCEPT_FAILED) {
+        zmq_event_t event;
+        event.event = ZMQ_EVENT_ACCEPT_FAILED;
+        event.data.accept_failed.addr = (char *) malloc (addr_.size () + 1);
+        copy_monitor_address (event.data.accept_failed.addr, addr_);
+        event.data.accept_failed.err= err_;
+        monitor_event (event);
+    }
+}
+
+void zmq::socket_base_t::event_closed (std::string &addr_, int fd_)
+{
+    if (monitor_events & ZMQ_EVENT_CLOSED) {
+        zmq_event_t event;
+        event.event = ZMQ_EVENT_CLOSED;
+        event.data.closed.addr = (char *) malloc (addr_.size () + 1);
+        copy_monitor_address (event.data.closed.addr, addr_);
+        event.data.closed.fd = fd_;
+        monitor_event (event);
+    }
+}
+
+void zmq::socket_base_t::event_close_failed (std::string &addr_, int err_)
+{
+    if (monitor_events & ZMQ_EVENT_CLOSE_FAILED) {
+        zmq_event_t event;
+        event.event = ZMQ_EVENT_CLOSE_FAILED;
+        event.data.close_failed.addr = (char *) malloc (addr_.size () + 1);
+        copy_monitor_address (event.data.close_failed.addr, addr_);
+        event.data.close_failed.err = err_;
+        monitor_event (event);
+    }
+}
+
+void zmq::socket_base_t::event_disconnected (std::string &addr_, int fd_)
+{
+    if (monitor_events & ZMQ_EVENT_DISCONNECTED) {
+        zmq_event_t event;
+        event.event = ZMQ_EVENT_DISCONNECTED;
+        event.data.disconnected.addr = (char *) malloc (addr_.size () + 1);
+        copy_monitor_address (event.data.disconnected.addr, addr_);
+        event.data.disconnected.fd = fd_;
+        monitor_event (event);
+    }
+}
+
+void zmq::socket_base_t::copy_monitor_address (char *dest_, std::string &src_)
+{
+    alloc_assert (dest_);
+    dest_[src_.size ()] = 0;
+    memcpy (dest_, src_.c_str (), src_.size ());
+}
+
+void zmq::socket_base_t::monitor_event (zmq_event_t event_)
+{
+    if (monitor_socket) {
+        zmq_msg_t msg;
+        void *event_data = malloc (sizeof (event_));
+        alloc_assert (event_data);
+        memcpy (event_data, &event_, sizeof (event_));
+        zmq_msg_init_data (&msg, event_data, sizeof (event_), zmq_free_event, NULL);
+        zmq_sendmsg (monitor_socket, &msg, 0);
+        zmq_msg_close (&msg);
+    }
+}
+
+void zmq::socket_base_t::stop_monitor()
+{
+    if (monitor_socket) {
+        zmq_close (monitor_socket);
+        monitor_socket = NULL;
+        monitor_events = 0;
+    }
+}