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103 lines
3.3 KiB
C++
103 lines
3.3 KiB
C++
/*
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Copyright (c) 2007-2016 Contributors as noted in the AUTHORS file
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This file is part of libzmq, the ZeroMQ core engine in C++.
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libzmq is free software; you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License (LGPL) as published
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by the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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As a special exception, the Contributors give you permission to link
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this library with independent modules to produce an executable,
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regardless of the license terms of these independent modules, and to
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copy and distribute the resulting executable under terms of your choice,
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provided that you also meet, for each linked independent module, the
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terms and conditions of the license of that module. An independent
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module is a module which is not derived from or based on this library.
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If you modify this library, you must extend this exception to your
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version of the library.
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libzmq is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "testutil.hpp"
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#include <zmq.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <vector>
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void test_system_max ()
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{
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// Keep allocating sockets until we run out of system resources
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const int no_of_sockets = 2 * 65536;
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void *ctx = zmq_ctx_new ();
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zmq_ctx_set (ctx, ZMQ_MAX_SOCKETS, no_of_sockets);
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std::vector<void *> sockets;
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while (true) {
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void *socket = zmq_socket (ctx, ZMQ_PAIR);
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if (!socket)
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break;
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sockets.push_back (socket);
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}
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assert (static_cast<int> (sockets.size ()) <= no_of_sockets);
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printf ("Socket creation failed after %i sockets\n",
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static_cast<int> (sockets.size ()));
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// System is out of resources, further calls to zmq_socket should return NULL
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for (unsigned int i = 0; i < 10; ++i) {
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void *socket = zmq_socket (ctx, ZMQ_PAIR);
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assert (socket == NULL);
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}
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// Clean up.
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for (unsigned int i = 0; i < sockets.size (); ++i)
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zmq_close (sockets[i]);
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zmq_ctx_destroy (ctx);
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}
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void test_zmq_default_max ()
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{
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// Keep allocating sockets until we hit the default limit
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void *ctx = zmq_ctx_new ();
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std::vector<void *> sockets;
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while (true) {
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void *socket = zmq_socket (ctx, ZMQ_PAIR);
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if (!socket)
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break;
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sockets.push_back (socket);
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}
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// We may stop sooner if system has fewer available sockets
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assert (sockets.size () <= ZMQ_MAX_SOCKETS_DFLT);
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// Further calls to zmq_socket should return NULL
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for (unsigned int i = 0; i < 10; ++i) {
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void *socket = zmq_socket (ctx, ZMQ_PAIR);
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assert (socket == NULL);
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}
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// Clean up
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for (unsigned int i = 0; i < sockets.size (); ++i)
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zmq_close (sockets[i]);
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zmq_ctx_destroy (ctx);
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}
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int main (void)
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{
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setup_test_environment ();
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test_system_max ();
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test_zmq_default_max ();
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return 0;
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}
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