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// (C) Copyright 2012 Howard Hinnant
// (C) Copyright 2012 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)
// adapted from the example given by Howard Hinnant in
#include <boost/config.hpp>
#define BOOST_THREAD_VERSION 4
#define BOOST_THREAD_QUEUE_DEPRECATE_OLD
#if ! defined BOOST_NO_CXX11_DECLTYPE
#define BOOST_RESULT_OF_USE_DECLTYPE
#endif
#include <iostream>
#include <boost/thread/scoped_thread.hpp>
#ifdef XXXX
#include <boost/thread/externally_locked_stream.hpp>
typedef boost::externally_locked_stream<std::ostream> the_ostream;
#else
typedef std::ostream the_ostream;
typedef std::istream the_istream;
#endif
#include <boost/thread/sync_queue.hpp>
void producer(the_ostream &mos, boost::sync_queue<int> & sbq)
{
using namespace boost;
try {
for(int i=0; ;++i)
{
sbq.push_back(i);
//sbq << i;
mos << "push_back(" << i << ") "<< sbq.size()<<"\n";
this_thread::sleep_for(chrono::milliseconds(200));
}
}
catch(sync_queue_is_closed&)
{
mos << "closed !!!\n";
}
catch(...)
{
mos << "exception !!!\n";
}
}
void consumer(
the_ostream &mos,
boost::sync_queue<int> & sbq)
{
using namespace boost;
try {
for(int i=0; ;++i)
{
int r;
sbq.pull_front(r);
//sbq >> r;
mos << i << " pull(" << r << ") "<< sbq.size()<<"\n";
this_thread::sleep_for(chrono::milliseconds(250));
}
}
catch(sync_queue_is_closed&)
{
mos << "closed !!!\n";
}
catch(...)
{
mos << "exception !!!\n";
}
}
void consumer2(the_ostream &mos, boost::sync_queue<int> & sbq)
{
using namespace boost;
try {
for(int i=0; ;++i)
{
int r;
queue_op_status st = sbq.try_pull_front(r);
if (queue_op_status::closed == st) break;
if (queue_op_status::success == st) {
mos << i << " pull(" << r << ")\n";
}
this_thread::sleep_for(chrono::milliseconds(250));
}
}
catch(...)
{
mos << "exception !!!\n";
}
}
void consumer3(the_ostream &mos, boost::sync_queue<int> & sbq)
{
using namespace boost;
try {
for(int i=0; ;++i)
{
int r;
queue_op_status res = sbq.wait_pull_front(r);
if (res==queue_op_status::closed) break;
mos << i << " wait_pull_front(" << r << ")\n";
this_thread::sleep_for(chrono::milliseconds(250));
}
}
catch(...)
{
mos << "exception !!!\n";
}
}
int main()
{
using namespace boost;
#ifdef XXXX
recursive_mutex terminal_mutex;
externally_locked_stream<std::ostream> mcerr(std::cerr, terminal_mutex);
externally_locked_stream<std::ostream> mcout(std::cout, terminal_mutex);
externally_locked_stream<std::istream> mcin(std::cin, terminal_mutex);
#else
the_ostream &mcerr = std::cout;
the_ostream &mcout = std::cerr;
//the_istream &mcin = std::cin;
#endif
sync_queue<int> sbq;
{
mcout << "begin of main" << std::endl;
scoped_thread<> t11(boost::thread(producer, boost::ref(mcerr), boost::ref(sbq)));
scoped_thread<> t12(boost::thread(producer, boost::ref(mcerr), boost::ref(sbq)));
scoped_thread<> t2(boost::thread(consumer, boost::ref(mcout), boost::ref(sbq)));
this_thread::sleep_for(chrono::seconds(1));
mcout << "closed()" << std::endl;
sbq.close();
mcout << "closed()" << std::endl;
} // all threads joined here.
mcout << "end of main" << std::endl;
return 0;
}
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