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1 | /* |
2 | * Copyright Andrey Semashev 2016. | |
3 | * Distributed under the Boost Software License, Version 1.0. | |
4 | * (See accompanying file LICENSE_1_0.txt or copy at | |
5 | * http://www.boost.org/LICENSE_1_0.txt) | |
6 | */ | |
7 | ||
8 | #include <iostream> | |
9 | #include <string> | |
10 | #include <boost/log/utility/ipc/reliable_message_queue.hpp> | |
11 | #include <boost/log/utility/ipc/object_name.hpp> | |
12 | #include <boost/log/utility/open_mode.hpp> | |
13 | ||
14 | namespace logging = boost::log; | |
15 | namespace keywords = boost::log::keywords; | |
16 | ||
17 | //[ example_util_ipc_reliable_mq_writer | |
18 | int main() | |
19 | { | |
20 | typedef logging::ipc::reliable_message_queue queue_t; | |
21 | ||
22 | // Create a message_queue_type object that is associated with the interprocess | |
23 | // message queue named "ipc_message_queue". | |
24 | queue_t queue | |
25 | ( | |
26 | keywords::name = logging::ipc::object_name(logging::ipc::object_name::user, "ipc_message_queue"), | |
27 | keywords::open_mode = logging::open_mode::open_or_create, /*< create the queue, if not yet created >*/ | |
28 | keywords::capacity = 256, /*< if the queue has to be created, allocate 256 blocks... >*/ | |
29 | keywords::block_size = 1024, /*< ... of 1 KiB each for messages >*/ | |
30 | keywords::overflow_policy = queue_t::fail_on_overflow /*< if the queue is full, return error to the writer >*/ | |
31 | ); | |
32 | ||
33 | // Send a message through the queue | |
34 | std::string message = "Hello, Viewer!"; | |
35 | queue_t::operation_result result = queue.send(message.data(), message.size()); | |
36 | ||
37 | // See if the message was sent | |
38 | switch (result) | |
39 | { | |
40 | case queue_t::operation_result::succeeded: | |
41 | std::cout << "Message sent successfully" << std::endl; | |
42 | break; | |
43 | ||
44 | case queue_t::operation_result::no_space: | |
45 | std::cout << "Message could not be sent because the queue is full" << std::endl; | |
46 | break; | |
47 | ||
48 | case queue_t::operation_result::aborted: | |
49 | // This can happen is overflow_policy is block_on_overflow | |
50 | std::cout << "Message sending operation has been interrupted" << std::endl; | |
51 | break; | |
52 | } | |
53 | ||
54 | return 0; | |
55 | } | |
56 | //] |