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Diffstat (limited to 'sal/osl/unx/interlck.c')
| -rw-r--r-- | sal/osl/unx/interlck.c | 196 |
1 files changed, 0 insertions, 196 deletions
diff --git a/sal/osl/unx/interlck.c b/sal/osl/unx/interlck.c deleted file mode 100644 index a32f67c11..000000000 --- a/sal/osl/unx/interlck.c +++ /dev/null @@ -1,196 +0,0 @@ -/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ -/************************************************************************* - * - * 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/armarch.h> -#include <osl/interlck.h> -#include <osl/diagnose.h> - -#if ( defined ( SOLARIS ) || defined ( NETBSD ) ) && defined ( SPARC ) -#error please use asm/interlck_sparc.s -#elif defined ( SOLARIS) && defined ( X86 ) -#error please use asm/interlck_x86.s -#elif defined ( ARM ) && (( __GNUC__ < 4 ) || (( __GNUC__ == 4) && ( __GNUC_MINOR__ < 6 ))) && ( __ARM_ARCH__ >= 6) -// assembler implementation for gcc <4.6 on arm -// originally contributed by Eric Bachard / OOo4Kids -// replaced with the asm code generated by Linaro gcc 4.5 -// which includes memory barriers to make it SMP-safe -// #i117017# and lp#726529 -oslInterlockedCount SAL_CALL osl_incrementInterlockedCount(oslInterlockedCount* pCount) -{ - register oslInterlockedCount nCount __asm__ ("r1"); - int nResult; - - __asm__ __volatile__ ( -" dmb\n" -"1: ldrex %0, [%3]\n" -" add %0, %0, #1\n" -" strex %1, %0, [%3]\n" -" teq %1, #0\n" -" bne 1b\n" -" dmb\n" - : "=&r" (nCount), "=&r" (nResult), "=m" (*pCount) - : "r" (pCount) - : "memory"); - - return nCount; -} - -oslInterlockedCount SAL_CALL osl_decrementInterlockedCount(oslInterlockedCount* pCount) -{ - register oslInterlockedCount nCount __asm__ ("r1"); - int nResult; - - __asm__ __volatile__ ( -" dmb\n" -"0: ldrex %0, [%3]\n" -" sub %0, %0, #1\n" -" strex %1, %0, [%3]\n" -" teq %1, #0\n" -" bne 0b\n" -" dmb\n" - : "=&r" (nCount), "=&r" (nResult), "=m" (*pCount) - : "r" (pCount) - : "memory"); - - return nCount; -} -#elif defined ( GCC ) && ( defined ( X86 ) || defined ( X86_64 ) ) -/* That's possible on x86-64 too since oslInterlockedCount is a sal_Int32 */ - -extern int osl_isSingleCPU; - -/*****************************************************************************/ -/* osl_incrementInterlockedCount */ -/*****************************************************************************/ -oslInterlockedCount SAL_CALL osl_incrementInterlockedCount(oslInterlockedCount* pCount) -{ - // Fast case for old, slow, single CPU Intel machines for whom - // interlocking is a performance nightmare. - register oslInterlockedCount nCount asm("%eax"); - nCount = 1; - - if ( osl_isSingleCPU ) { - __asm__ __volatile__ ( - "xaddl %0, %1\n\t" - : "+r" (nCount), "+m" (*pCount) - : /* nothing */ - : "memory"); - return ++nCount; - } -#if ( __GNUC__ > 4 ) || (( __GNUC__ == 4) && ( __GNUC_MINOR__ >= 4 )) - else - return __sync_add_and_fetch (pCount, 1); -#else - else { - __asm__ __volatile__ ( - "lock\n\t" - "xaddl %0, %1\n\t" - : "+r" (nCount), "+m" (*pCount) - : /* nothing */ - : "memory"); - } - return ++nCount; -#endif -} - -oslInterlockedCount SAL_CALL osl_decrementInterlockedCount(oslInterlockedCount* pCount) -{ - register oslInterlockedCount nCount asm("%eax"); - nCount = -1; - - if ( osl_isSingleCPU ) { - __asm__ __volatile__ ( - "xaddl %0, %1\n\t" - : "+r" (nCount), "+m" (*pCount) - : /* nothing */ - : "memory"); - return --nCount; - } -#if ( __GNUC__ > 4 ) || (( __GNUC__ == 4) && ( __GNUC_MINOR__ >= 4 )) - else - return __sync_sub_and_fetch (pCount, 1); -#else - else { - __asm__ __volatile__ ( - "lock\n\t" - "xaddl %0, %1\n\t" - : "+r" (nCount), "+m" (*pCount) - : /* nothing */ - : "memory"); - } - return --nCount; -#endif -} -#elif ( __GNUC__ > 4 ) || (( __GNUC__ == 4) && ( __GNUC_MINOR__ >= 4 )) -oslInterlockedCount SAL_CALL osl_incrementInterlockedCount(oslInterlockedCount* pCount) -{ - return __sync_add_and_fetch(pCount, 1); -} -oslInterlockedCount SAL_CALL osl_decrementInterlockedCount(oslInterlockedCount* pCount) -{ - return __sync_sub_and_fetch(pCount, 1); -} -#else -/* use only if nothing else works, expensive due to single mutex for all reference counts */ - -static pthread_mutex_t InterLock = PTHREAD_MUTEX_INITIALIZER; - -/*****************************************************************************/ -/* osl_incrementInterlockedCount */ -/*****************************************************************************/ -oslInterlockedCount SAL_CALL osl_incrementInterlockedCount(oslInterlockedCount* pCount) -{ - oslInterlockedCount Count; - - pthread_mutex_lock(&InterLock); - Count = ++(*pCount); - pthread_mutex_unlock(&InterLock); - - return (Count); -} - -/*****************************************************************************/ -/* osl_decrementInterlockedCount */ -/*****************************************************************************/ -oslInterlockedCount SAL_CALL osl_decrementInterlockedCount(oslInterlockedCount* pCount) -{ - oslInterlockedCount Count; - - pthread_mutex_lock(&InterLock); - Count = --(*pCount); - pthread_mutex_unlock(&InterLock); - - return (Count); -} - -#endif /* default */ - -/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |