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Diffstat (limited to 'sal/osl/w32/interlck.c')
| -rw-r--r-- | sal/osl/w32/interlck.c | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/sal/osl/w32/interlck.c b/sal/osl/w32/interlck.c new file mode 100644 index 000000000000..d2170b7a672e --- /dev/null +++ b/sal/osl/w32/interlck.c @@ -0,0 +1,144 @@ +/************************************************************************* + * + * $RCSfile: interlck.c,v $ + * + * $Revision: 1.1.1.1 $ + * + * last change: $Author: hr $ $Date: 2000-09-18 15:17:23 $ + * + * The Contents of this file are made available subject to the terms of + * either of the following licenses + * + * - GNU Lesser General Public License Version 2.1 + * - Sun Industry Standards Source License Version 1.1 + * + * Sun Microsystems Inc., October, 2000 + * + * GNU Lesser General Public License Version 2.1 + * ============================================= + * Copyright 2000 by Sun Microsystems, Inc. + * 901 San Antonio Road, Palo Alto, CA 94303, USA + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License version 2.1, as published by the Free Software Foundation. + * + * 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + * + * Sun Industry Standards Source License Version 1.1 + * ================================================= + * The contents of this file are subject to the Sun Industry Standards + * Source License Version 1.1 (the "License"); You may not use this file + * except in compliance with the License. You may obtain a copy of the + * License at http://www.openoffice.org/license.html. + * + * Software provided under this License is provided on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, + * WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS, + * MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING. + * See the License for the specific provisions governing your rights and + * obligations concerning the Software. + * + * The Initial Developer of the Original Code is: Sun Microsystems, Inc. + * + * Copyright: 2000 by Sun Microsystems, Inc. + * + * All Rights Reserved. + * + * Contributor(s): _______________________________________ + * + * + ************************************************************************/ + +#include "system.h" + +#include <osl/interlck.h> +#include <osl/diagnose.h> + +/* For all Intel x86 above x486 we use a spezial inline assembler implementation. + The main reason is that WIN9? does not return the result of the operation. + Instead there is only returned a value greater than zero is the increment + result is greater than zero, but not the the result of the addition. + For Windows NT the native function could be used, because the correct result + is returned. Beacuse of simpler code maintance and performace reasons we use + on every x86-Windows-Platform the inline assembler implementation. +*/ + +/*****************************************************************************/ +/* osl_incrementInterlockedCount */ +/*****************************************************************************/ +oslInterlockedCount SAL_CALL osl_incrementInterlockedCount(oslInterlockedCount* pCount) +#ifdef _M_IX86 +#pragma warning(disable: 4035) +{ + __asm + { + mov ecx, pCount + mov eax, 1 + lock xadd dword ptr [ecx],eax + inc eax + } +} +#pragma warning(default: 4035) +#else +#pragma message("WARNING: Using system InterlockedIncrement") +{ + return (InterlockedIncrement(pCount)); +} +#endif + +/*****************************************************************************/ +/* osl_decrementInterlockedCount */ +/*****************************************************************************/ +oslInterlockedCount SAL_CALL osl_decrementInterlockedCount(oslInterlockedCount* pCount) +#ifdef _M_IX86 +#pragma warning(disable: 4035) +{ + __asm + { + mov ecx, pCount + mov eax, -1 + lock xadd dword ptr [ecx],eax + dec eax + } +} +#pragma warning(default: 4035) +#else +#pragma message("WARNING: Using system InterlockedDecrement") +{ + return (InterlockedDecrement(pCount)); +} +#endif + +/************************************************************************* +* +* $Log: not supported by cvs2svn $ +* Revision 1.6 2000/09/18 14:29:01 willem.vandorp +* OpenOffice header added. +* +* Revision 1.5 1999/10/27 15:13:35 mfe +* Change of Copyright, removed compiler warnings, code clean up, ... +* +* Revision 1.4 1999/03/02 15:23:11 rh +* #62469 MessageBox if Winsock failed, and new interlocked count in assembler +* +* Revision 1.3 1999/02/15 15:36:06 mm +* #61896 W95 fix, mutex instead of sytem call +* +* Revision 1.2 1999/01/20 19:09:49 jsc +* #61011# Typumstellung +* +* Revision 1.1 1998/09/22 14:57:55 rh +* added interlock functions +* +*************************************************************************/ + |