// Copyright (C) 2012-2013 Vicente Botet
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

#include <boost/config.hpp>
#if ! defined BOOST_NO_CXX11_DECLTYPE
#define BOOST_RESULT_OF_USE_DECLTYPE
#endif
#include <iostream>

#define BOOST_THREAD_VERSION 4
#define BOOST_THREAD_PROVIDES_EXECUTORS
//#define BOOST_THREAD_USES_LOG
#define BOOST_THREAD_USES_LOG_THREAD_ID
#define BOOST_THREAD_QUEUE_DEPRECATE_OLD

#include <boost/thread/caller_context.hpp>
#include <boost/thread/executors/basic_thread_pool.hpp>
#include <boost/thread/executors/loop_executor.hpp>
#include <boost/thread/executors/serial_executor.hpp>
#include <boost/thread/executors/inline_executor.hpp>
#include <boost/thread/executors/thread_executor.hpp>
#include <boost/thread/executors/executor.hpp>
#include <boost/thread/executors/executor_adaptor.hpp>
#include <boost/thread/executor.hpp>
#include <boost/thread/future.hpp>
#include <boost/assert.hpp>
#include <string>
#include <iostream>
#include <cassert>

boost::future<void> p(boost::future<void> f) {
 assert(f.is_ready());
 return boost::make_ready_future();
}

void p1()
{
 // std::cout << BOOST_CONTEXTOF << std::endl;
 //boost::this_thread::sleep_for(boost::chrono::milliseconds(200));
}

void p2()
{
 // std::cout << BOOST_CONTEXTOF << std::endl;
 //boost::this_thread::sleep_for(boost::chrono::seconds(10));
}

int f1()
{
 std::cout << BOOST_CONTEXTOF << std::endl;
 boost::this_thread::sleep_for(boost::chrono::seconds(1));
 std::cout << BOOST_CONTEXTOF << std::endl;
 return 1;
}
int f2(int i)
{
 // std::cout << BOOST_CONTEXTOF << std::endl;
 boost::this_thread::sleep_for(boost::chrono::seconds(2));
 return i + 1;
}

void submit_some(boost::executor& tp)
{
 for (int i = 0; i < 3; ++i) {
 tp.submit(&p2);
 }
 for (int i = 0; i < 3; ++i) {
 tp.submit(&p1);
 }

}


void at_th_entry(boost::basic_thread_pool& )
{

}

int test_executor_adaptor()
{
 std::cout << BOOST_CONTEXTOF << std::endl;
 {
 try
 {
 {
 boost::executor_adaptor < boost::basic_thread_pool > ea(4);
 std::cout << BOOST_CONTEXTOF << std::endl;
 submit_some( ea);
 std::cout << BOOST_CONTEXTOF << std::endl;
#if 1
 // fixme
 // ERROR= tr1::bad_weak_ptr
 {
 boost::future<int> t1 = boost::async(ea, &f1);
 boost::future<int> t2 = boost::async(ea, &f1);
 std::cout << BOOST_CONTEXTOF << " t1= " << t1.get() << std::endl;
 std::cout << BOOST_CONTEXTOF << " t2= " << t2.get() << std::endl;
 }
 std::cout << BOOST_CONTEXTOF << std::endl;
 submit_some(ea);
 std::cout << BOOST_CONTEXTOF << std::endl;
 {
 boost::basic_thread_pool ea3(1);
 std::cout << BOOST_CONTEXTOF << std::endl;
 boost::future<int> t1 = boost::async(ea3, &f1);
 std::cout << BOOST_CONTEXTOF << std::endl;
 boost::future<int> t2 = boost::async(ea3, &f1);
 std::cout << BOOST_CONTEXTOF << std::endl;
 //boost::future<int> t2 = boost::async(ea3, f2, 1); // todo this doesn't compiles yet on C++11
 //boost::future<int> t2 = boost::async(ea3, boost::bind(f2, 1)); // todo this doesn't compiles yet on C++98
 std::cout << BOOST_CONTEXTOF << " t1= " << t1.get() << std::endl;
 std::cout << BOOST_CONTEXTOF << " t2= " << t2.get() << std::endl;
 }
#endif
 std::cout << BOOST_CONTEXTOF << std::endl;
 submit_some(ea);
 std::cout << BOOST_CONTEXTOF << std::endl;
 }
 std::cout << BOOST_CONTEXTOF << std::endl;
 {
 boost::executor_adaptor < boost::loop_executor > ea2;
 submit_some( ea2);
 ea2.underlying_executor().run_queued_closures();
 }
#if ! defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
 std::cout << BOOST_CONTEXTOF << std::endl;
 {
 boost::executor_adaptor < boost::basic_thread_pool > ea1(4);
 boost::executor_adaptor < boost::serial_executor > ea2(ea1);
 submit_some(ea2);
 }
#endif
 std::cout << BOOST_CONTEXTOF << std::endl;
 {
 boost::executor_adaptor < boost::inline_executor > ea1;
 submit_some(ea1);
 }
 std::cout << BOOST_CONTEXTOF << std::endl;
 {
 boost::executor_adaptor < boost::thread_executor > ea1;
 submit_some(ea1);
 }
 std::cout << BOOST_CONTEXTOF << std::endl;
#if 1
 // fixme
 // ERROR= tr1::bad_weak_ptr
 {
 boost::basic_thread_pool ea(4, at_th_entry);
 boost::future<int> t1 = boost::async(ea, &f1);
 std::cout << BOOST_CONTEXTOF << " t1= " << t1.get() << std::endl;
 }
#endif
 std::cout << BOOST_CONTEXTOF << std::endl;
 {
 boost::async(&f1);
 }
#if 1
 // fixme
 // ERROR= tr1::bad_weak_ptr

 std::cout << BOOST_CONTEXTOF << std::endl;
 {
 boost::basic_thread_pool ea(1);
 boost::async(ea,&f1);
 }
#endif
 std::cout << BOOST_CONTEXTOF << std::endl;
 boost::this_thread::sleep_for(boost::chrono::milliseconds(200));
 std::cout << BOOST_CONTEXTOF << std::endl;
 }
 catch (std::exception& ex)
 {
 std::cout << "ERROR= " << ex.what() << "" << std::endl;
 return 1;
 }
 catch (...)
 {
 std::cout << " ERROR= exception thrown" << std::endl;
 return 2;
 }
 }
 // std::cout << BOOST_CONTEXTOF << std::endl;
 return 0;
}


int main()
{
 return test_executor_adaptor();

#if 0 && defined BOOST_THREAD_PROVIDES_FUTURE_CONTINUATION \
 && defined BOOST_THREAD_PROVIDES_EXECUTORS \
 && ! defined BOOST_NO_CXX11_RVALUE_REFERENCES

 boost::basic_thread_pool executor;
 // compiles
 boost::make_ready_future().then(&p);

 // ??
 boost::make_ready_future().then(executor, &p);

 // doesn't compile
 boost::make_ready_future().then(executor, &p);
#endif
}