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Diffstat (limited to 'sal/osl/w32/interlck.c')
| -rw-r--r-- | sal/osl/w32/interlck.c | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/sal/osl/w32/interlck.c b/sal/osl/w32/interlck.c new file mode 100644 index 000000000000..14589e56184a --- /dev/null +++ b/sal/osl/w32/interlck.c @@ -0,0 +1,142 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org 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 version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +#include "system.h" + +#include <osl/interlck.h> +#include <osl/diagnose.h> + +extern int osl_isSingleCPU; + +/* 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 +#ifdef __MINGW32__ +{ + asm + ( + " movl %0, %%ecx\n" + " movl $1, %%eax\n" + " movl %1, %%edx\n" + " cmpl $0, %%edx\n" + " je 1f\n" + " xadd %%eax, (%%ecx)\n" + " jmp 2f\n" + "1:\n" + " lock xadd %%eax, (%%ecx)\n" + "2:\n" + " incl %%eax\n" + ::"m"(pCount),"m"(osl_isSingleCPU) + ); +} +#else +#pragma warning(disable: 4035) +{ + __asm + { + mov ecx, pCount + mov eax, 1 + mov edx, osl_isSingleCPU + cmp edx, 0 + je is_not_single + xadd dword ptr [ecx],eax + jmp cont + is_not_single: + lock xadd dword ptr [ecx],eax + cont: + inc eax + } +} +#pragma warning(default: 4035) +#endif +#else +#pragma message("WARNING: Using system InterlockedIncrement") +{ + return (InterlockedIncrement(pCount)); +} +#endif + +/*****************************************************************************/ +/* osl_decrementInterlockedCount */ +/*****************************************************************************/ +oslInterlockedCount SAL_CALL osl_decrementInterlockedCount(oslInterlockedCount* pCount) +#ifdef _M_IX86 +#ifdef __MINGW32__ +{ + asm + ( + " movl %0, %%ecx\n" + " orl $-1, %%eax\n" + " movl %1, %%edx\n" + " cmpl $0, %%edx\n" + " je 1f\n" + " xadd %%eax, (%%ecx)\n" + " jmp 2f\n" + "1:\n" + " lock xadd %%eax, (%%ecx)\n" + "2:\n" + " decl %%eax\n" + ::"m"(pCount),"m"(osl_isSingleCPU) + ); +} +#else +#pragma warning(disable: 4035) +{ + __asm + { + mov ecx, pCount + or eax, -1 + mov edx, osl_isSingleCPU + cmp edx, 0 + je is_not_single + xadd dword ptr [ecx],eax + jmp cont + is_not_single: + lock xadd dword ptr [ecx],eax + cont: + dec eax + } +} +#pragma warning(default: 4035) +#endif +#else +#pragma message("WARNING: Using system InterlockedDecrement") +{ + return (InterlockedDecrement(pCount)); +} +#endif |