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#ifndef BOOST_DETAIL_LIGHTWEIGHT_THREAD_HPP_INCLUDED
#define BOOST_DETAIL_LIGHTWEIGHT_THREAD_HPP_INCLUDED
// MS compatible compilers support #pragma once
#if defined(_MSC_VER) && (_MSC_VER >= 1020)
# pragma once
#endif
// boost/detail/lightweight_thread.hpp
//
// Copyright (c) 2002 Peter Dimov and Multi Media Ltd.
// Copyright (c) 2008 Peter Dimov
//
// 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>
#include <memory>
#include <cerrno>
// pthread_create, pthread_join
#if defined( BOOST_HAS_PTHREADS )
#include <pthread.h>
#else
#include <windows.h>
#include <process.h>
typedef HANDLE pthread_t;
int pthread_create( pthread_t * thread, void const *, unsigned (__stdcall * start_routine) (void*), void* arg )
{
HANDLE h = (HANDLE)_beginthreadex( 0, 0, start_routine, arg, 0, 0 );
if( h != 0 )
{
*thread = h;
return 0;
}
else
{
return EAGAIN;
}
}
int pthread_join( pthread_t thread, void ** /*value_ptr*/ )
{
::WaitForSingleObject( thread, INFINITE );
::CloseHandle( thread );
return 0;
}
#endif
// template<class F> int lw_thread_create( pthread_t & pt, F f );
namespace boost
{
namespace detail
{
class lw_abstract_thread
{
public:
virtual ~lw_abstract_thread() {}
virtual void run() = 0;
};
#if defined( BOOST_HAS_PTHREADS )
extern "C" void * lw_thread_routine( void * pv )
{
std::auto_ptr<lw_abstract_thread> pt( static_cast<lw_abstract_thread *>( pv ) );
pt->run();
return 0;
}
#else
unsigned __stdcall lw_thread_routine( void * pv )
{
std::auto_ptr<lw_abstract_thread> pt( static_cast<lw_abstract_thread *>( pv ) );
pt->run();
return 0;
}
#endif
template<class F> class lw_thread_impl: public lw_abstract_thread
{
public:
explicit lw_thread_impl( F f ): f_( f )
{
}
void run()
{
f_();
}
private:
F f_;
};
template<class F> int lw_thread_create( pthread_t & pt, F f )
{
std::auto_ptr<lw_abstract_thread> p( new lw_thread_impl<F>( f ) );
int r = pthread_create( &pt, 0, lw_thread_routine, p.get() );
if( r == 0 )
{
p.release();
}
return r;
}
} // namespace detail
} // namespace boost
#endif // #ifndef BOOST_DETAIL_LIGHTWEIGHT_THREAD_HPP_INCLUDED
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