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/* -*- c++ -*- */
/*
* Copyright (C) 2001-2003 William E. Kempf
* Copyright (C) 2007 Anthony Williams
* Copyright 2008 Free Software Foundation, Inc.
*
* 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)
*/
/*
* This was extracted from Boost 1.35.0 and fixed.
*/
#include <gruel/thread_group.h>
namespace gruel
{
thread_group::thread_group()
{
}
thread_group::~thread_group()
{
// We shouldn't have to scoped_lock here, since referencing this object
// from another thread while we're deleting it in the current thread is
// going to lead to undefined behavior any way.
for (std::list<boost::thread*>::iterator it = m_threads.begin();
it != m_threads.end(); ++it)
{
delete (*it);
}
}
boost::thread* thread_group::create_thread(const boost::function0<void>& threadfunc)
{
// No scoped_lock required here since the only "shared data" that's
// modified here occurs inside add_thread which does scoped_lock.
std::auto_ptr<boost::thread> thrd(new boost::thread(threadfunc));
add_thread(thrd.get());
return thrd.release();
}
void thread_group::add_thread(boost::thread* thrd)
{
boost::lock_guard<boost::shared_mutex> guard(m_mutex);
// For now we'll simply ignore requests to add a thread object multiple
// times. Should we consider this an error and either throw or return an
// error value?
std::list<boost::thread*>::iterator it = std::find(m_threads.begin(),
m_threads.end(), thrd);
BOOST_ASSERT(it == m_threads.end());
if (it == m_threads.end())
m_threads.push_back(thrd);
}
void thread_group::remove_thread(boost::thread* thrd)
{
boost::lock_guard<boost::shared_mutex> guard(m_mutex);
// For now we'll simply ignore requests to remove a thread object that's
// not in the group. Should we consider this an error and either throw or
// return an error value?
std::list<boost::thread*>::iterator it = std::find(m_threads.begin(),
m_threads.end(), thrd);
BOOST_ASSERT(it != m_threads.end());
if (it != m_threads.end())
m_threads.erase(it);
}
void thread_group::join_all()
{
boost::shared_lock<boost::shared_mutex> guard(m_mutex);
for (std::list<boost::thread*>::iterator it = m_threads.begin();
it != m_threads.end(); ++it)
{
(*it)->join();
}
}
void thread_group::interrupt_all()
{
boost::shared_lock<boost::shared_mutex> guard(m_mutex);
for(std::list<boost::thread*>::iterator it=m_threads.begin(),end=m_threads.end();
it!=end;
++it)
{
(*it)->interrupt();
}
}
size_t thread_group::size() const
{
boost::shared_lock<boost::shared_mutex> guard(m_mutex);
return m_threads.size();
}
} // namespace gruel
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