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authorDan Klein <danklei@cisco.com>2015-08-24 13:22:48 +0300
committerDan Klein <danklei@cisco.com>2015-08-24 13:22:48 +0300
commitdab741a80699f86e86c91718872a052cca9bbb25 (patch)
tree1959c4a2cea440170a5113dcb067796cb20ffb64 /external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/select.cpp
parentd3f26ece7d4383df0b22fe9c3cb3e695381ec737 (diff)
Fixed dependencies of Control Plane to use external_lib sources
Diffstat (limited to 'external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/select.cpp')
-rw-r--r--external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/select.cpp234
1 files changed, 234 insertions, 0 deletions
diff --git a/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/select.cpp b/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/select.cpp
new file mode 100644
index 00000000..ec0d2e82
--- /dev/null
+++ b/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/select.cpp
@@ -0,0 +1,234 @@
+/*
+ Copyright (c) 2007-2015 Contributors as noted in the AUTHORS file
+
+ This file is part of libzmq, the ZeroMQ core engine in C++.
+
+ libzmq is free software; you can redistribute it and/or modify it under
+ the terms of the GNU Lesser General Public License (LGPL) as published
+ by the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ As a special exception, the Contributors give you permission to link
+ this library with independent modules to produce an executable,
+ regardless of the license terms of these independent modules, and to
+ copy and distribute the resulting executable under terms of your choice,
+ provided that you also meet, for each linked independent module, the
+ terms and conditions of the license of that module. An independent
+ module is a module which is not derived from or based on this library.
+ If you modify this library, you must extend this exception to your
+ version of the library.
+
+ libzmq 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 "select.hpp"
+#if defined ZMQ_USE_SELECT
+
+#include "platform.hpp"
+#if defined ZMQ_HAVE_WINDOWS
+#include "windows.hpp"
+#elif defined ZMQ_HAVE_HPUX
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#elif defined ZMQ_HAVE_OPENVMS
+#include <sys/types.h>
+#include <sys/time.h>
+#else
+#include <sys/select.h>
+#endif
+
+#include <string.h>
+#include <algorithm>
+
+#include "err.hpp"
+#include "config.hpp"
+#include "i_poll_events.hpp"
+
+zmq::select_t::select_t (const zmq::ctx_t &ctx_) :
+ ctx(ctx_),
+ maxfd (retired_fd),
+ retired (false),
+ stopping (false)
+{
+ // Clear file descriptor sets.
+ FD_ZERO (&source_set_in);
+ FD_ZERO (&source_set_out);
+ FD_ZERO (&source_set_err);
+}
+
+zmq::select_t::~select_t ()
+{
+ worker.stop ();
+}
+
+zmq::select_t::handle_t zmq::select_t::add_fd (fd_t fd_, i_poll_events *events_)
+{
+ // Store the file descriptor.
+ fd_entry_t entry = {fd_, events_};
+ fds.push_back (entry);
+
+ // Ensure we do not attempt to select () on more than FD_SETSIZE
+ // file descriptors.
+ zmq_assert (fds.size () <= FD_SETSIZE);
+
+ // Start polling on errors.
+ FD_SET (fd_, &source_set_err);
+
+ // Adjust maxfd if necessary.
+ if (fd_ > maxfd)
+ maxfd = fd_;
+
+ // Increase the load metric of the thread.
+ adjust_load (1);
+
+ return fd_;
+}
+
+void zmq::select_t::rm_fd (handle_t handle_)
+{
+ // Mark the descriptor as retired.
+ fd_set_t::iterator it;
+ for (it = fds.begin (); it != fds.end (); ++it)
+ if (it->fd == handle_)
+ break;
+ zmq_assert (it != fds.end ());
+ it->fd = retired_fd;
+ retired = true;
+
+ // Stop polling on the descriptor.
+ FD_CLR (handle_, &source_set_in);
+ FD_CLR (handle_, &source_set_out);
+ FD_CLR (handle_, &source_set_err);
+
+ // Discard all events generated on this file descriptor.
+ FD_CLR (handle_, &readfds);
+ FD_CLR (handle_, &writefds);
+ FD_CLR (handle_, &exceptfds);
+
+ // Adjust the maxfd attribute if we have removed the
+ // highest-numbered file descriptor.
+ if (handle_ == maxfd) {
+ maxfd = retired_fd;
+ for (fd_set_t::iterator it = fds.begin (); it != fds.end (); ++it)
+ if (it->fd > maxfd)
+ maxfd = it->fd;
+ }
+
+ // Decrease the load metric of the thread.
+ adjust_load (-1);
+}
+
+void zmq::select_t::set_pollin (handle_t handle_)
+{
+ FD_SET (handle_, &source_set_in);
+}
+
+void zmq::select_t::reset_pollin (handle_t handle_)
+{
+ FD_CLR (handle_, &source_set_in);
+}
+
+void zmq::select_t::set_pollout (handle_t handle_)
+{
+ FD_SET (handle_, &source_set_out);
+}
+
+void zmq::select_t::reset_pollout (handle_t handle_)
+{
+ FD_CLR (handle_, &source_set_out);
+}
+
+void zmq::select_t::start ()
+{
+ ctx.start_thread (worker, worker_routine, this);
+}
+
+void zmq::select_t::stop ()
+{
+ stopping = true;
+}
+
+int zmq::select_t::max_fds ()
+{
+ return FD_SETSIZE;
+}
+
+void zmq::select_t::loop ()
+{
+ while (!stopping) {
+
+ // Execute any due timers.
+ int timeout = (int) execute_timers ();
+
+ // Intialise the pollsets.
+ memcpy (&readfds, &source_set_in, sizeof source_set_in);
+ memcpy (&writefds, &source_set_out, sizeof source_set_out);
+ memcpy (&exceptfds, &source_set_err, sizeof source_set_err);
+
+ // Wait for events.
+#ifdef ZMQ_HAVE_OSX
+ struct timeval tv = {(long) (timeout / 1000), timeout % 1000 * 1000};
+#else
+ struct timeval tv = {(long) (timeout / 1000),
+ (long) (timeout % 1000 * 1000)};
+#endif
+#ifdef ZMQ_HAVE_WINDOWS
+ int rc = select (0, &readfds, &writefds, &exceptfds,
+ timeout ? &tv : NULL);
+ wsa_assert (rc != SOCKET_ERROR);
+#else
+ int rc = select (maxfd + 1, &readfds, &writefds, &exceptfds,
+ timeout ? &tv : NULL);
+ if (rc == -1) {
+ errno_assert (errno == EINTR);
+ continue;
+ }
+#endif
+
+ // If there are no events (i.e. it's a timeout) there's no point
+ // in checking the pollset.
+ if (rc == 0)
+ continue;
+
+ for (fd_set_t::size_type i = 0; i < fds.size (); i ++) {
+ if (fds [i].fd == retired_fd)
+ continue;
+ if (FD_ISSET (fds [i].fd, &exceptfds))
+ fds [i].events->in_event ();
+ if (fds [i].fd == retired_fd)
+ continue;
+ if (FD_ISSET (fds [i].fd, &writefds))
+ fds [i].events->out_event ();
+ if (fds [i].fd == retired_fd)
+ continue;
+ if (FD_ISSET (fds [i].fd, &readfds))
+ fds [i].events->in_event ();
+ }
+
+ // Destroy retired event sources.
+ if (retired) {
+ fds.erase (std::remove_if (fds.begin (), fds.end (),
+ zmq::select_t::is_retired_fd), fds.end ());
+ retired = false;
+ }
+ }
+}
+
+void zmq::select_t::worker_routine (void *arg_)
+{
+ ((select_t*) arg_)->loop ();
+}
+
+bool zmq::select_t::is_retired_fd (const fd_entry_t &entry)
+{
+ return (entry.fd == retired_fd);
+}
+
+#endif