diff options
| -rw-r--r-- | sal/osl/w32/interlck.c | 38 |
1 files changed, 26 insertions, 12 deletions
diff --git a/sal/osl/w32/interlck.c b/sal/osl/w32/interlck.c index fe879dffbbf2..9dc15ca6ce84 100644 --- a/sal/osl/w32/interlck.c +++ b/sal/osl/w32/interlck.c @@ -4,9 +4,9 @@ * * $RCSfile: interlck.c,v $ * - * $Revision: 1.3 $ + * $Revision: 1.4 $ * - * last change: $Author: rt $ $Date: 2005-09-08 15:06:36 $ + * last change: $Author: rt $ $Date: 2006-10-27 12:00:24 $ * * The Contents of this file are made available subject to * the terms of GNU Lesser General Public License Version 2.1. @@ -38,6 +38,8 @@ #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 @@ -56,10 +58,17 @@ oslInterlockedCount SAL_CALL osl_incrementInterlockedCount(oslInterlockedCount* { __asm { - mov ecx, pCount - mov eax, 1 - lock xadd dword ptr [ecx],eax - inc eax + 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) @@ -79,10 +88,17 @@ oslInterlockedCount SAL_CALL osl_decrementInterlockedCount(oslInterlockedCount* { __asm { - mov ecx, pCount - mov eax, -1 - lock xadd dword ptr [ecx],eax - dec eax + 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) @@ -92,5 +108,3 @@ oslInterlockedCount SAL_CALL osl_decrementInterlockedCount(oslInterlockedCount* return (InterlockedDecrement(pCount)); } #endif - - |