Update of /cvsroot/boost/boost/boost/detail
In directory sc8-pr-cvs3.sourceforge.net:/tmp/cvs-serv14175/boost/detail
Modified Files:
atomic_count.hpp
Added Files:
atomic_count_gcc_x86.hpp
Log Message:
atomic_count_gcc_x86 added since _sync doesn't work on i386
--- NEW FILE: atomic_count_gcc_x86.hpp ---
#ifndef BOOST_DETAIL_ATOMIC_COUNT_GCC_X86_HPP_INCLUDED
#define BOOST_DETAIL_ATOMIC_COUNT_GCC_X86_HPP_INCLUDED
//
// boost/detail/atomic_count_gcc_x86.hpp
//
// atomic_count for g++ on 486+/AMD64
//
// Copyright 2007 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)
//
namespace boost
{
namespace detail
{
class atomic_count
{
public:
explicit atomic_count( long v ) : value_( static_cast< int >( v ) ) {}
void operator++()
{
__asm__
(
"lock\n\t"
"incl %0":
"+m"( value_ ): // output (%0)
: // inputs
"cc" // clobbers
);
}
long operator--()
{
return atomic_exchange_and_add( &value_, -1 ) - 1;
}
operator long() const
{
return atomic_exchange_and_add( &value_, 0 );
}
private:
atomic_count(atomic_count const &);
atomic_count & operator=(atomic_count const &);
mutable int value_;
private:
static int atomic_exchange_and_add( int * pw, int dv )
{
// int r = *pw;
// *pw += dv;
// return r;
int r;
__asm__ __volatile__
(
"lock\n\t"
"xadd %1, %0":
"+m"( *pw ), "=r"( r ): // outputs (%0, %1)
"1"( dv ): // inputs (%2 == %1)
"memory", "cc" // clobbers
);
return r;
}
};
} // namespace detail
} // namespace boost
#endif // #ifndef BOOST_DETAIL_ATOMIC_COUNT_SYNC_HPP_INCLUDED
Index: atomic_count.hpp
===================================================================
RCS file: /cvsroot/boost/boost/boost/detail/atomic_count.hpp,v
retrieving revision 1.12
retrieving revision 1.13
diff -u -d -r1.12 -r1.13
--- atomic_count.hpp 28 Apr 2007 16:15:13 -0000 1.12
+++ atomic_count.hpp 8 May 2007 20:14:38 -0000 1.13
@@ -90,16 +90,30 @@
}
#elif defined(BOOST_AC_USE_PTHREADS)
+
# include <boost/detail/atomic_count_pthreads.hpp>
+
+#elif defined( __GNUC__ ) && ( defined( __i386__ ) || defined( __x86_64__ ) )
+
+# include <boost/detail/atomic_count_gcc_x86.hpp>
+
#elif defined(WIN32) || defined(_WIN32) || defined(__WIN32__)
+
# include <boost/detail/atomic_count_win32.hpp>
+
#elif defined( __GNUC__ ) && ( __GNUC__ * 100 + __GNUC_MINOR__ >= 401 )
+
# include <boost/detail/atomic_count_sync.hpp>
+
#elif defined(__GLIBCPP__) || defined(__GLIBCXX__)
+
# include <boost/detail/atomic_count_gcc.hpp>
+
#elif defined(BOOST_HAS_PTHREADS)
+
# define BOOST_AC_USE_PTHREADS
# include <boost/detail/atomic_count_pthreads.hpp>
+
#else
// Use #define BOOST_DISABLE_THREADS to avoid the error
-------------------------------------------------------------------------
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