57 lines
2.1 KiB
C++
57 lines
2.1 KiB
C++
/*
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* Copyright Andrey Semashev 2016.
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* Distributed under the Boost Software License, Version 1.0.
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* (See accompanying file LICENSE_1_0.txt or copy at
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* http://www.boost.org/LICENSE_1_0.txt)
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*/
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#include <iostream>
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#include <string>
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#include <boost/log/utility/ipc/reliable_message_queue.hpp>
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#include <boost/log/utility/ipc/object_name.hpp>
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#include <boost/log/utility/open_mode.hpp>
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namespace logging = boost::log;
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namespace keywords = boost::log::keywords;
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//[ example_util_ipc_reliable_mq_writer
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int main()
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{
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typedef logging::ipc::reliable_message_queue queue_t;
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// Create a message_queue_type object that is associated with the interprocess
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// message queue named "ipc_message_queue".
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queue_t queue
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(
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keywords::name = logging::ipc::object_name(logging::ipc::object_name::user, "ipc_message_queue"),
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keywords::open_mode = logging::open_mode::open_or_create, /*< create the queue, if not yet created >*/
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keywords::capacity = 256, /*< if the queue has to be created, allocate 256 blocks... >*/
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keywords::block_size = 1024, /*< ... of 1 KiB each for messages >*/
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keywords::overflow_policy = queue_t::fail_on_overflow /*< if the queue is full, return error to the writer >*/
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);
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// Send a message through the queue
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std::string message = "Hello, Viewer!";
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queue_t::operation_result result = queue.send(message.data(), static_cast< queue_t::size_type >(message.size()));
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// See if the message was sent
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switch (result)
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{
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case queue_t::operation_result::succeeded:
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std::cout << "Message sent successfully" << std::endl;
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break;
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case queue_t::operation_result::no_space:
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std::cout << "Message could not be sent because the queue is full" << std::endl;
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break;
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case queue_t::operation_result::aborted:
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// This can happen is overflow_policy is block_on_overflow
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std::cout << "Message sending operation has been interrupted" << std::endl;
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break;
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}
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return 0;
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}
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//]
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