libcopp

cross-platform coroutine library of c++

in developing ...

Build & Run Unit Test in	Linux+OSX(Clang+GCC)	Windows(VC+MinGW)
Status

Gitter

LICENSE

License under the MIT license

Document

Generate document with doxygen.

Doxygen file located at doc/libcopp.doxyfile .

INSTALL

libcopp use cmake to generate makefile and switch build tools.

Prerequisites

• [required] GCC or Clang or VC support ISO C++ 03 and upper
• [required] cmake 3.1.0 and upper
• [optional] gtest 1.6.0 and upper (better test supported)
• [optional] Boost.Test (Boost.Test supported)

Unix

• [required] ar, as, ld (binutils)
• [optional] if using gtest, pthread is required.

Windows

• [required] masm (in vc)
• [optional] if using gtest, pthread is required.

Build

1. make a build directory

mkdir build

2. run cmake command

cmake <libcopp dir> [options]

options can be cmake options. such as set compile toolchains, source directory or options of libcopp that control build actions. libcopp options are listed below:

-DBUILD_SHARED_LIBS=YES|NO [default=NO] enable build dynamic library.

-DLIBCOPP_ENABLE_SEGMENTED_STACKS=YES|NO [default=NO] enable split stack supported context.(it's only availabe in linux and gcc 4.7.0 or upper)

-DLIBCOPP_ENABLE_VALGRIND=YES|NO [default=YES] enable valgrind supported context.

-DGTEST_ROOT=[path] set gtest library install prefix path

3. make libcopp

make [options]

4. run test [optional]

test/coroutine_test

5. install [optional]

make install

Or you can just copy include directory and libcopp.a in lib or lib64 into your project to use it.

USAGE

Just include headers and linking library file of your platform to use libcopp

Example

coroutine_context example

There is a simple example of using coroutine context below:

#include <cstdio>
#include <cstring>
#include <iostream>
#include <inttypes.h>
#include <stdint.h>

// include context header file
#include <libcopp/coroutine/coroutine_context_container.h>

// define a coroutine runner
class my_runner : public copp::detail::coroutine_runnable_base
{
public:
    int operator()() {
        // ... your code here ...printf("cortoutine %" PRIxPTR " exit and return %d.\n", (intptr_t)&co_obj, co_obj.get_ret_code());
        copp::coroutine_context_default* addr = get_coroutine_context<copp::coroutine_context_default>();
        std::cout<< "cortoutine "<< addr<< " is running."<< std::endl;

        addr->yield();
        std::cout<< "cortoutine "<< addr<< " is resumed."<< std::endl;

        return 1;
    }
};

int main() {
    // create a coroutine
    copp::coroutine_context_default co_obj;
    std::cout<< "cortoutine "<< &co_obj<< " is created."<< std::endl;

    // create a runner
    my_runner runner;

    // bind runner to coroutine object
    co_obj.create(&runner);

    // start a coroutine
    co_obj.start();

    // yield from runner
    std::cout<< "cortoutine "<< &co_obj<< " is yield."<< std::endl;
    co_obj.resume();

    std::cout<< "cortoutine "<< &co_obj<< " exit and return "<< co_obj.get_ret_code()<< "."<< std::endl;
    return 0;
}

And then, you can custom many function such as set your stack allocator, coroutine type and etc. by set your template parameters of coroutine context. Notice: One coroutine runner can only below to one coroutine context

coroutine task example

There is a simple example of using coroutine task below:

#include <iostream>

// include task header file
#include <libcotask/task.h>

typedef cotask::task<> my_task_t;

int main(int argc, char* argv[]) {
    // create a task using factory function [with lambda expression]
	my_task_t::prt_t task = my_task_t::create([](){
	    std::cout<< "task "<< cotask::this_task::get_task()->get_id()<< " started"<< std::endl;
        cotask::this_task::get_task()->yield();
		std::cout<< "task "<< cotask::this_task::get_task()->get_id()<< " resumed"<< std::endl;
		return 0;
    });
	
	std::cout<< "task "<< task->get_id()<< " created"<< std::endl;
    // start a task
    task->start();

	std::cout<< "task "<< task->get_id()<< " yield"<< std::endl;
	task->resume();
	std::cout<< "task "<< task->get_id()<< " stoped, ready to be destroyed."<< std::endl;

    return 0;
}

And then, you can custom many functions by set your macro type of coroutine and task to do some other function.

NOTICE

split stack support: if in Linux and user gcc 4.7.0 or upper, add -DLIBCOPP_ENABLE_SEGMENTED_STACKS=YES to use split stack supported context.

DEVELOPER

basic coroutine object summary

safe coroutine object summary

HISTORY

2016-06-16

1. [BOOST] merge boost.context 1.61.0 and use the new jump progress(see https://owent.net/90QQw for detail)
2. [BOOST] enable valgrind support if valgrind/valgrind.h exists
3. [CXX] use cmake to detect the function of compiler
4. [OPTIMIZE] using pthread key when c++11 TLS not available
5. [OPTIMIZE] remove coroutine_context_safe_base.coroutine_context_base is also thread safe now
6. [OPTIMIZE] remove all global variables of cotask
7. [OPTIMIZE] remove std/thread.h， add noexpect if available
8. [CI] CI use build matrix to test more compiler
9. [BUILD] use RelWithDebInfo for default

2016-02-27

1. v0.2.0, this version is used in our server for about one year.

2015-12-29

1. add support for valgrind
2. add ci configure
3. merge boost.context 1.60.0
4. add -fPIC, fix spin lock
5. some environment do not support TLS, make these environment can compile success

2014-07-25

v0.1.0

THANKS TO

mutouyun