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stl_threads.h (_Atomic_swap): New function.

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* include/bits/stl_threads.h (_Atomic_swap): New function.
	    (_Swap_lock_struct<__dummy>::_S_swap_lock): New data.
	    * testsuite/ext/rope.cc: New file.

From-SVN: r45999
This commit is contained in:
Dimitris Vyzovitis 2001-10-03 21:19:31 +00:00 committed by Loren J. Rittle
parent b52a8930ff
commit 8bf4eeece3
3 changed files with 66 additions and 0 deletions
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6
libstdc++-v3/ChangeLog
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@ -1,3 +1,9 @@
2001-10-03 Dimitris Vyzovitis <vyzo@media.mit.edu>
* include/bits/stl_threads.h (_Atomic_swap): New function.
(_Swap_lock_struct<__dummy>::_S_swap_lock): New data.
* testsuite/ext/rope.cc: New file.
2001-10-02 Benjamin Kosnik <bkoz@redhat.com>
* config/locale/time_members_gnu.h: Remove.

22
libstdc++-v3/include/bits/stl_threads.h
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@ -202,6 +202,28 @@ struct _Refcount_Base
// later, if required. You can start by cloning the __STL_PTHREADS
// path while making the obvious changes. Later it could be optimized
// to use the atomicity.h abstraction layer from libstdc++-v3.
// vyzo: simple _Atomic_swap implementation following the guidelines above
// We use a template here only to get a unique initialized instance.
template<int __dummy>
struct _Swap_lock_struct {
static __gthread_mutex_t _S_swap_lock;
};
template<int __dummy>
__gthread_mutex_t
_Swap_lock_struct<__dummy>::_S_swap_lock = __GTHREAD_MUTEX_INIT;
// This should be portable, but performance is expected
// to be quite awful. This really needs platform specific
// code.
inline unsigned long _Atomic_swap(unsigned long * __p, unsigned long __q) {
__gthread_mutex_lock(&_Swap_lock_struct<0>::_S_swap_lock);
unsigned long __result = *__p;
*__p = __q;
__gthread_mutex_unlock(&_Swap_lock_struct<0>::_S_swap_lock);
return __result;
}
#else
// GCC extension end
# ifdef __STL_SGI_THREADS

38
libstdc++-v3/testsuite/ext/rope.cc Normal file
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@ -0,0 +1,38 @@
// 2001-10-03 From: Dimitris Vyzovitis <vyzo@media.mit.edu>
// Copyright (C) 2001 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING. If not, write to the Free
// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// USA.
// rope (SGI extension)
#include <ext/rope>
#include <iostream>
void test01()
{
std::crope foo;
foo += "bar";
const char* data = foo.c_str();
std::cout << data << std::endl;
}
int main()
{
test01();
return 0;
}