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authorMartin Sustrik <sustrik@fastmq.commkdir>2009-08-06 10:47:34 +0200
committerMartin Sustrik <sustrik@fastmq.commkdir>2009-08-06 10:47:34 +0200
commitb8b4acef4c2ba1a169ce84c1fb4c70a5676ebba3 (patch)
treead29407ed2db35765fda969e297f7f0efd9ff39a /src/dispatcher.cpp
parent43fa72b7ee6b6d97b84a555ce8902cee855aeb72 (diff)
dispatcher renamed to context
Diffstat (limited to 'src/dispatcher.cpp')
-rw-r--r--src/dispatcher.cpp266
1 files changed, 0 insertions, 266 deletions
diff --git a/src/dispatcher.cpp b/src/dispatcher.cpp
deleted file mode 100644
index 56a5e0b..0000000
--- a/src/dispatcher.cpp
+++ /dev/null
@@ -1,266 +0,0 @@
-/*
- Copyright (c) 2007-2009 FastMQ Inc.
-
- 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 <http://www.gnu.org/licenses/>.
-*/
-
-#include "../include/zmq.h"
-
-#include "dispatcher.hpp"
-#include "app_thread.hpp"
-#include "io_thread.hpp"
-#include "platform.hpp"
-#include "err.hpp"
-#include "pipe.hpp"
-#include "pipe_reader.hpp"
-#include "pipe_writer.hpp"
-#include "session.hpp"
-#include "i_api.hpp"
-
-#if defined ZMQ_HAVE_WINDOWS
-#include "windows.h"
-#endif
-
-zmq::dispatcher_t::dispatcher_t (int app_threads_, int io_threads_)
-{
-#ifdef ZMQ_HAVE_WINDOWS
- // Intialise Windows sockets. Note that WSAStartup can be called multiple
- // times given that WSACleanup will be called for each WSAStartup.
- WORD version_requested = MAKEWORD (2, 2);
- WSADATA wsa_data;
- int rc = WSAStartup (version_requested, &wsa_data);
- zmq_assert (rc == 0);
- zmq_assert (LOBYTE (wsa_data.wVersion) == 2 &&
- HIBYTE (wsa_data.wVersion) == 2);
-#endif
-
- // Create application thread proxies.
- for (int i = 0; i != app_threads_; i++) {
- app_thread_t *app_thread = new app_thread_t (this, i);
- zmq_assert (app_thread);
- app_threads.push_back (app_thread);
- signalers.push_back (app_thread->get_signaler ());
- }
-
- // Create I/O thread objects.
- for (int i = 0; i != io_threads_; i++) {
- io_thread_t *io_thread = new io_thread_t (this, i + app_threads_);
- zmq_assert (io_thread);
- io_threads.push_back (io_thread);
- signalers.push_back (io_thread->get_signaler ());
- }
-
- // Create command pipe matrix.
- command_pipes = new command_pipe_t [signalers.size () * signalers.size ()];
- zmq_assert (command_pipes);
-
- // Launch I/O threads.
- for (int i = 0; i != io_threads_; i++)
- io_threads [i]->start ();
-}
-
-void zmq::dispatcher_t::shutdown ()
-{
- delete this;
-}
-
-zmq::dispatcher_t::~dispatcher_t ()
-{
- // Ask I/O threads to terminate.
- for (io_threads_t::size_type i = 0; i != io_threads.size (); i++)
- io_threads [i]->stop ();
-
- // Wait till I/O threads actually terminate.
- for (io_threads_t::size_type i = 0; i != io_threads.size (); i++)
- io_threads [i]->join ();
-
- // At this point the current thread is the only thread with access to
- // our internal data. Deallocation will be done exclusively in this thread.
- for (app_threads_t::size_type i = 0; i != app_threads.size (); i++)
- app_threads [i]->shutdown ();
- for (io_threads_t::size_type i = 0; i != io_threads.size (); i++)
- io_threads [i]->shutdown ();
-
- delete [] command_pipes;
-
- // Deallocate all the pipes, pipe readers and pipe writers.
- for (pipes_t::iterator it = pipes.begin (); it != pipes.end (); it++) {
- delete it->pipe;
- delete it->reader;
- delete it->writer;
- }
-
-#ifdef ZMQ_HAVE_WINDOWS
- // On Windows, uninitialise socket layer.
- int rc = WSACleanup ();
- wsa_assert (rc != SOCKET_ERROR);
-#endif
-}
-
-int zmq::dispatcher_t::thread_slot_count ()
-{
- return signalers.size ();
-}
-
-zmq::i_api *zmq::dispatcher_t::create_socket (int type_)
-{
- threads_sync.lock ();
- app_thread_t *thread = choose_app_thread ();
- if (!thread) {
- threads_sync.unlock ();
- return NULL;
- }
- i_api *s = thread->create_socket (type_);
- threads_sync.unlock ();
- return s;
-}
-
-zmq::app_thread_t *zmq::dispatcher_t::choose_app_thread ()
-{
- // Check whether thread ID is already assigned. If so, return it.
- for (app_threads_t::size_type i = 0; i != app_threads.size (); i++)
- if (app_threads [i]->is_current ())
- return app_threads [i];
-
- // Check whether there's an unused thread slot in the dispatcher.
- for (app_threads_t::size_type i = 0; i != app_threads.size (); i++)
- if (app_threads [i]->make_current ())
- return app_threads [i];
-
- // Thread limit was exceeded.
- errno = EMFILE;
- return NULL;
-}
-
-zmq::io_thread_t *zmq::dispatcher_t::choose_io_thread (uint64_t taskset_)
-{
- zmq_assert (io_threads.size () > 0);
-
- // Find the I/O thread with minimum load.
- int min_load = io_threads [0]->get_load ();
- io_threads_t::size_type result = 0;
- for (io_threads_t::size_type i = 1; i != io_threads.size (); i++) {
- if (!taskset_ || (taskset_ & (uint64_t (1) << i))) {
- int load = io_threads [i]->get_load ();
- if (load < min_load) {
- min_load = load;
- result = i;
- }
- }
- }
-
- return io_threads [result];
-}
-
-void zmq::dispatcher_t::create_pipe (object_t *reader_parent_,
- object_t *writer_parent_, uint64_t hwm_, uint64_t lwm_,
- pipe_reader_t **reader_, pipe_writer_t **writer_)
-{
- // Create the pipe, reader & writer triple.
- pipe_t *pipe = new pipe_t;
- zmq_assert (pipe);
- pipe_reader_t *reader = new pipe_reader_t (reader_parent_, pipe,
- hwm_, lwm_);
- zmq_assert (reader);
- pipe_writer_t *writer = new pipe_writer_t (writer_parent_, pipe, reader,
- hwm_, lwm_);
- zmq_assert (writer);
- reader->set_peer (writer);
-
- // Store the pipe in the repository.
- pipe_info_t info = {pipe, reader, writer};
- pipes_sync.lock ();
- pipe->set_index (pipes.size ());
- pipes.push_back (info);
- pipes_sync.unlock ();
-
- *reader_ = reader;
- *writer_ = writer;
-}
-
-void zmq::dispatcher_t::destroy_pipe (pipe_t *pipe_)
-{
- // Remove the pipe from the repository.
- pipe_info_t info;
- pipes_sync.lock ();
- pipes_t::size_type i = pipe_->get_index ();
- info = pipes [i];
- pipes [i] = pipes.back ();
- pipes.pop_back ();
- pipes_sync.unlock ();
-
- // Deallocate the pipe and associated pipe reader & pipe writer.
- zmq_assert (info.pipe == pipe_);
- delete info.pipe;
- delete info.reader;
- delete info.writer;
-}
-
-int zmq::dispatcher_t::register_inproc_endpoint (const char *endpoint_,
- session_t *session_)
-{
- inproc_endpoint_sync.lock ();
- inproc_endpoints_t::iterator it = inproc_endpoints.find (endpoint_);
-
- if (it != inproc_endpoints.end ()) {
- inproc_endpoint_sync.unlock ();
- errno = EADDRINUSE;
- return -1;
- }
-
- inproc_endpoints.insert (std::make_pair (endpoint_, session_));
-
- inproc_endpoint_sync.unlock ();
- return 0;
-}
-
-zmq::object_t *zmq::dispatcher_t::get_inproc_endpoint (const char *endpoint_)
-{
- inproc_endpoint_sync.lock ();
- inproc_endpoints_t::iterator it = inproc_endpoints.find (endpoint_);
-
- if (it == inproc_endpoints.end ()) {
- inproc_endpoint_sync.unlock ();
- errno = EADDRNOTAVAIL;
- return NULL;
- }
-
- it->second->inc_seqnum ();
- object_t *session = it->second;
-
- inproc_endpoint_sync.unlock ();
- return session;
-}
-
-void zmq::dispatcher_t::unregister_inproc_endpoints (session_t *session_)
-{
- inproc_endpoint_sync.lock ();
-
- // Remove the connection from the repository.
- // TODO: Yes, the algorithm has O(n^2) complexity. Should be O(log n).
- for (inproc_endpoints_t::iterator it = inproc_endpoints.begin ();
- it != inproc_endpoints.end ();) {
- if (it->second == session_) {
- inproc_endpoints.erase (it);
- it = inproc_endpoints.begin ();
- }
- else
- it++;
- }
-
- inproc_endpoint_sync.unlock ();
-}
-