generic-library/cppzmq
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Merge pull request #450 from gummif/gfa/build-examples

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Problem: Examples are not compiled
This commit is contained in:
Simon Giesecke 2020-11-25 09:57:17 +01:00 committed by GitHub
commit 05ff657b1a
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6 changed files with 99 additions and 9 deletions
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3
CMakeLists.txt
View File

@ -101,4 +101,7 @@ option(CPPZMQ_BUILD_TESTS "Whether or not to build the tests" ON)
if (CPPZMQ_BUILD_TESTS)
enable_testing()
add_subdirectory(tests)
if (CMAKE_CXX_STANDARD AND NOT CMAKE_CXX_STANDARD EQUAL 98 AND CMAKE_CXX_STANDARD GREATER_EQUAL 11)
add_subdirectory(examples)
endif()
endif()

16
README.md
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@ -53,7 +53,7 @@ int main()
sock.send(zmq::str_buffer("Hello, world"), zmq::send_flags::dontwait);
}
```
This a more complex example where we send and receive multi-part messages.
This a more complex example where we send and receive multi-part messages over TCP with a wildcard port.
```c++
#include <iostream>
#include <zmq_addon.hpp>
@ -61,10 +61,14 @@ This a more complex example where we send and receive multi-part messages.
int main()
{
zmq::context_t ctx;
zmq::socket_t sock1(ctx, zmq::socket_type::pair);
zmq::socket_t sock2(ctx, zmq::socket_type::pair);
sock1.bind("inproc://test");
sock2.connect("inproc://test");
zmq::socket_t sock1(ctx, zmq::socket_type::push);
zmq::socket_t sock2(ctx, zmq::socket_type::pull);
sock1.bind("tcp://127.0.0.1:*");
const std::string last_endpoint =
sock1.get(zmq::sockopt::last_endpoint);
std::cout << "Connecting to "
<< last_endpoint << std::endl;
sock2.connect(last_endpoint);
std::array<zmq::const_buffer, 2> send_msgs = {
zmq::str_buffer("foo"),
@ -84,6 +88,8 @@ int main()
}
```
See the `examples` directory for more examples. When the project is compiled with tests enabled, each example gets compiled to an executable.
Compatibility Guidelines
========================

39
examples/CMakeLists.txt Normal file
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@ -0,0 +1,39 @@
cmake_minimum_required(VERSION 3.0 FATAL_ERROR)
project(cppzmq-examples CXX)
# place binaries and libraries according to GNU standards
include(GNUInstallDirs)
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/${CMAKE_INSTALL_LIBDIR})
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/${CMAKE_INSTALL_LIBDIR})
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/${CMAKE_INSTALL_BINDIR})
find_package(Threads)
add_executable(
pubsub_multithread_inproc
pubsub_multithread_inproc.cpp
)
target_link_libraries(
pubsub_multithread_inproc
PRIVATE cppzmq ${CMAKE_THREAD_LIBS_INIT}
)
add_executable(
hello_world
hello_world.cpp
)
target_link_libraries(
hello_world
PRIVATE cppzmq ${CMAKE_THREAD_LIBS_INIT}
)
add_executable(
multipart_messages
multipart_messages.cpp
)
target_link_libraries(
multipart_messages
PRIVATE cppzmq ${CMAKE_THREAD_LIBS_INIT}
)

9
examples/hello_world.cpp Normal file
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@ -0,0 +1,9 @@
#include <zmq.hpp>
int main()
{
zmq::context_t ctx;
zmq::socket_t sock(ctx, zmq::socket_type::push);
sock.bind("inproc://test");
sock.send(zmq::str_buffer("Hello, world"), zmq::send_flags::dontwait);
}

31
examples/multipart_messages.cpp Normal file
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@ -0,0 +1,31 @@
#include <iostream>
#include <zmq_addon.hpp>
int main()
{
zmq::context_t ctx;
zmq::socket_t sock1(ctx, zmq::socket_type::push);
zmq::socket_t sock2(ctx, zmq::socket_type::pull);
sock1.bind("tcp://127.0.0.1:*");
const std::string last_endpoint =
sock1.get(zmq::sockopt::last_endpoint);
std::cout << "Connecting to "
<< last_endpoint << std::endl;
sock2.connect(last_endpoint);
std::array<zmq::const_buffer, 2> send_msgs = {
zmq::str_buffer("foo"),
zmq::str_buffer("bar!")
};
if (!zmq::send_multipart(sock1, send_msgs))
return 1;
std::vector<zmq::message_t> recv_msgs;
const auto ret = zmq::recv_multipart(
sock2, std::back_inserter(recv_msgs));
if (!ret)
return 1;
std::cout << "Got " << *ret
<< " messages" << std::endl;
return 0;
}

10
examples/pubsub_multithread_inproc.cpp
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@ -40,9 +40,10 @@ void SubscriberThread1(zmq::context_t *ctx) {
zmq::recv_result_t result =
zmq::recv_multipart(subscriber, std::back_inserter(recv_msgs));
assert(result && "recv failed");
assert(*result == 2);
std::cout << "Thread2: [" << recv_msgs[0].to_string_view() << "] "
<< recv_msgs[1].to_string_view() << std::endl;
std::cout << "Thread2: [" << recv_msgs[0].to_string() << "] "
<< recv_msgs[1].to_string() << std::endl;
}
}
@ -60,9 +61,10 @@ void SubscriberThread2(zmq::context_t *ctx) {
zmq::recv_result_t result =
zmq::recv_multipart(subscriber, std::back_inserter(recv_msgs));
assert(result && "recv failed");
assert(*result == 2);
std::cout << "Thread3: [" << recv_msgs[0].to_string_view() << "] "
<< recv_msgs[1].to_string_view() << std::endl;
std::cout << "Thread3: [" << recv_msgs[0].to_string() << "] "
<< recv_msgs[1].to_string() << std::endl;
}
}