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What Is It?

so5extra is a collection of various SObjectizer's extensions. so5extra is built on top of SObjectizer and intended to simplify development of SObjectizer-based applications.

At the current moment so5extra contains the following components:

  • so_5::extra::async_op. Several implementation of async operations. Contains subcomponents so_5::extra::async_op::time_unlimited (async operations without a limit for execution time) and so_5::extra::async_op::time_limited (async operations with a time limit);
  • so_5::extra::disp::asio_one_thread. A dispatcher which runs Asio's io_service::run() on a separate worker thread and schedules execution of event-handler via asio::post() facility;
  • so_5::extra::disp::asio_thread_pool. A dispatcher which runs Asio's io_service::run() on a thread pool and schedules execution of event-handler via asio::post() facility;
  • so_5::extra::env_infrastructures::asio::simple_mtsafe. An implementation of thread-safe single threaded environment infrastructure on top of Asio;
  • so_5::extra::env_infrastructures::asio::simple_not_mtsafe. An implementation of not-thread-safe single threaded environment infrastructure on top of Asio;
  • so_5::extra::enveloped_msg. A set of tools for working with enveloped messages;
  • so_5::extra::mboxes::collecting_mbox. An implementation of mbox which collects messages of type T and sends bunches of collected messages to the target mbox;
  • so_5::extra::mboxes::broadcast::fixed_mbox. An implementation of mbox which broadcasts messages to a set of destination mboxes;
  • so_5::extra::mboxes::proxy. A proxy-mbox which delegates all calls to the underlying actual mbox. Such proxy simplifies development of custom mboxes.
  • so_5::extra::mboxes::retained_msg. An implementation of mbox which holds the last sent message and automatically resend it to every new subscriber for this message type;
  • so_5::extra::mboxes::round_robin. An implementation of round-robin mbox which performs delivery of messages by round-robin scheme;
  • so_5::extra::mchains::fixed_size. An implementation of fixed-size mchain which capacity is known at the compile-time;
  • so_5::extra::revocable_msg. A set of tools for sending messages/signals those can be revoked;
  • so_5::extra::revocable_timer. A set of tools for sending delayed/periodic messages/signals those can be revoked;
  • so_5::extra::shutdowner. A tool to simplify prevention of SObjectizer shutdown in cases where some agents require more time for graceful shutdown (like storing caches to disk and stuff like that);
  • so_5::extra::sync. A set of tools for performing synchronous interaction between agents (or threads if only mchains are used).

More features can be added to so5extra in future. Some of so5extra's features can become parts of SObjectizer itself if they will be in wide use.

Obtaining And Using

The Old-School Way

Obtaining

so5extra can be obtained from source-code repository via Git. For example:

git clone https://github.com/stiffstream/so5extra

so5extra can also be downloaded from the corresponding Releases section on GitHub. There are two types of achives with so5extra:

  • archives with so5extra sources only (with names like so5extra-1.4.0.tar.xz);
  • archives with so5extra and all dependecies, like SObjectizer and Asio. These archives have names like so5extra-1.4.0-full.tar.xz).

If so5extra is got from repository or downloaded as archive without dependecies inside then obtaining of dependecies could be necessary. It can be done via mxxruexternals command:

git clone https://github.com/stiffstream/so5extra
cd so5extra
mxxruexternals

Note: mxxruexternals is a part of Mxx_ru gem. To use Mxx_ru it is necessary to install Ruby and then Mxx_ru gem (by gem install Mxx_ru).

Using

so5extra is a header-only library. There is no need to compile and link so5extra itself. Only INCLUDE path must be set appropriately.

Using via CMake

Since v.1.2.1 there is the very basic support for CMake: so5extra can be used in CMake-based projects. There is dev/so_5_extra/CMakeFiles.txt for that.

But building so5extra's examples and/or tests via CMake is not supported. If you want to have CMake support for these things let us known via "info at stiffstream dot com".

Obtaining And Using Via vcpkg

Since v.1.2.1 so5extra is available via vcpkg library manager.

To install so5extra it is necessary to use vcpkg install command:

vcpkg install so5extra

To use so5extra it is necessary to add the following lines in your CMakeFiles.txt:

find_package(so5extra CONFIG REQUIRED)
find_package(sobjectizer CONFIG REQUIRED)

And then it is necessary to link your target against SObjectizer's libraries:

target_link_libraries(your_target sobjectizer::SharedLib)
target_link_libraries(your_target sobjectizer::so5extra)

For example: this is a simple CMakeFiles.txt file for so5extra's sample delivery_receipt:

find_package(so5extra CONFIG REQUIRED)
find_package(sobjectizer CONFIG REQUIRED)

set(SAMPLE sample.so_5_extra.delivery_receipt)
add_executable(${SAMPLE} main.cpp)
target_link_libraries(${SAMPLE} sobjectizer::SharedLib)
target_link_libraries(${SAMPLE} sobjectizer::so5extra)
install(TARGETS ${SAMPLE} DESTINATION bin)

Obtaining And Using Via Conan

Installing And Adding To conanfile.txt

Since Nov 2018 so5extra can be used via Conan dependency manager. To use so5extra it is necessary to do the following steps.

Add the corresponding remote to your conan:

conan remote add stiffstream https://api.bintray.com/conan/stiffstream/public

It can be also necessary to add public-conan remote:

conan remote add public-conan https://api.bintray.com/conan/bincrafters/public-conan

Add so5extra to conanfile.txt of your project:

[requires]
so5extra/1.4.0@stiffstream/stable

It also may be necessary to specify shared option for SObjectizer. For example, for build SObjectizer as a static library:

[options]
sobjectizer:shared=False

Install dependencies for your project:

conan install SOME_PATH --build=missing

Adding so5extra To Your CMakeLists.txt

Please note that so5extra and SObjectizer should be added to your CMakeLists.txt via find_package command:

...
include(${CMAKE_BINARY_DIR}/conanbuildinfo.cmake)
conan_basic_setup()

find_package(sobjectizer CONFIG REQUIRED)
find_package(so5extra CONFIG REQUIRED)
...
target_link_libraries(your_target sobjectizer::SharedLib) # Or sobjectizer::StaticLib
target_link_libraries(your_target sobjectizer::so5extra)

Building Samples And Tests

To build so5extra samples and tests it is necessary to use Ruby and Mxx_ru gem. For example:

git clone https://github.com/stiffstream/so5extra
cd so5extra
mxxruexternals
cd dev
ruby build.rb

All tests and samples will be built. If it is necessary to build only examples it can be done by:

git clone https://github.com/stiffstream/so5extra
cd so5extra
mxxruexternals
cd dev
ruby sample/so_5_extra/build_samples.rb

Building API Reference Manual

API Reference Manual can be build via doxygen. Just go into dev subdirectory where Doxygen file is located and run doxygen. The generated documentation in HTML format will be stored into doc/html subdir.

License

Since v.1.4.0 so5extra is distributed under BSD-3-CLAUSE license (see LICENSE file).

For the license of SObjectizer library see LICENSE file in SObjectizer distributive.

For the license of asio library see COPYING file in asio distributive.

For the license of doctest library see LICENSE file in doctest distributive.

About

so5extra is a collection of various SObjectizer's extensions. so5extra is built on top of SObjectizer and intended to simplify development of SObjectizer-based applications.

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