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#ifndef CONDITION_TEST_COMMON_HPP
#define CONDITION_TEST_COMMON_HPP
// Copyright (C) 2007 Anthony Williams
//
// 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/thread/condition_variable.hpp>
#include <boost/thread/mutex.hpp>
#include <boost/thread/thread_time.hpp>
unsigned const timeout_seconds=5;
struct wait_for_flag
{
boost::mutex mutex;
boost::condition_variable cond_var;
bool flag;
unsigned woken;
wait_for_flag():
flag(false),woken(0)
{}
struct check_flag
{
bool const& flag;
check_flag(bool const& flag_):
flag(flag_)
{}
bool operator()() const
{
return flag;
}
private:
void operator=(check_flag&);
};
void wait_without_predicate()
{
boost::mutex::scoped_lock lock(mutex);
while(!flag)
{
cond_var.wait(lock);
}
++woken;
}
void wait_with_predicate()
{
boost::mutex::scoped_lock lock(mutex);
cond_var.wait(lock,check_flag(flag));
if(flag)
{
++woken;
}
}
void timed_wait_without_predicate()
{
boost::system_time const timeout=boost::get_system_time()+boost::posix_time::seconds(timeout_seconds);
boost::mutex::scoped_lock lock(mutex);
while(!flag)
{
if(!cond_var.timed_wait(lock,timeout))
{
return;
}
}
++woken;
}
void timed_wait_with_predicate()
{
boost::system_time const timeout=boost::get_system_time()+boost::posix_time::seconds(timeout_seconds);
boost::mutex::scoped_lock lock(mutex);
if(cond_var.timed_wait(lock,timeout,check_flag(flag)) && flag)
{
++woken;
}
}
void relative_timed_wait_with_predicate()
{
boost::mutex::scoped_lock lock(mutex);
if(cond_var.timed_wait(lock,boost::posix_time::seconds(timeout_seconds),check_flag(flag)) && flag)
{
++woken;
}
}
};
#endif
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