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137 lines
3.9 KiB
C
137 lines
3.9 KiB
C
3 years ago
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// SPDX-License-Identifier: LGPL-3.0-or-later
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/**
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* \file sys/interlocked.h
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*
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* Lock-free atomic operations on integers and pointers.
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*
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* \copyright The DoubleFourteen Code Forge (c) All Rights Reserved
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* \author Lorenzo Cogotti
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*/
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#ifndef DF_SYS_INTERLOCKED_H_
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#define DF_SYS_INTERLOCKED_H_
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#include "xpt.h"
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/**
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* \fn void Smp_AtomicStore(long *p, long v)
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* \fn void Smp_AtomicStoreRx(long *p, long v)
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* \fn void Smp_AtomicStoreRel(long *p, long v)
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* \fn void Smp_AtomicStorePtr(void **p, void *v)
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* \fn void Smp_AtomicStorePtrRx(void **p, void *v)
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* \fn void Smp_AtomicStorePtrRel(void **p, void *v)
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* \fn void Smp_AtomicStore8(Sint8 *p, Sint8 v)
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* \fn void Smp_AtomicStore8Rx(Sint8 *p, Sint8 v)
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* \fn void Smp_AtomicStore8Rel(Sint8 *p, Sint8 v)
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* \fn void Smp_AtomicStore16(Sint16 *p, Sint16 v)
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* \fn void Smp_AtomicStore16Rx(Sint16 *p, Sint16 v)
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* \fn void Smp_AtomicStore16Rel(Sint16 *p, Sint16 v)
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* \fn void Smp_AtomicStore32(Sint32 *p, Sint32 v)
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* \fn void Smp_AtomicStore32Rx(Sint32 *p, Sint32 v)
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* \fn void Smp_AtomicStore32Rel(Sint32 *p, Sint32 v)
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* \fn void Smp_AtomicStore64(Sint64 *p, Sint64 v)
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* \fn void Smp_AtomicStore64Rx(Sint64 *p, Sint64 v)
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* \fn void Smp_AtomicStore64Rel(Sint64 *p, Sint64 v)
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*
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* Atomic store operation to a variable or pointer.
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*
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* \note Only a subset of the fixed-size variants may be available on
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* specific architectures.
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*/
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#ifdef _MSC_VER
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#include "interlocked_intrin_msvc.h"
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#include "interlocked_ops_msvc.h"
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#else
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#if __GCC_ATOMIC_LONG_LOCK_FREE != 2
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#error "interlocked.h requires lock-free atomics on long!"
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#endif
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#if __GCC_ATOMIC_POINTER_LOCK_FREE != 2
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#error "interlocked.h requires lock-free atomics on void *!"
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#endif
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/******************************************************************************
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* ATOMICS ON FIXED SIZE INTEGERS *
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******************************************************************************/
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#if __GCC_ATOMIC_CHAR_LOCK_FREE == 2
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#define INTERLOCKED_INT8
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#define INTERLOCKED_TYPE Sint8
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#define INTERLOCKED_SUFFIX 8
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#include "interlocked_ops_gcc.h"
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#undef INTERLOCKED_TYPE
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#undef INTERLOCKED_SUFFIX
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#endif /* INTERLOCKED_INT8 */
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#if (__SIZEOF_SHORT__ == 2 && __GCC_ATOMIC_SHORT_LOCK_FREE == 2) || \
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(__SIZEOF_INT__ == 2 && __GCC_ATOMIC_INT_LOCK_FREE == 2)
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#define INTERLOCKED_INT16
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#define INTERLOCKED_TYPE Sint16
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#define INTERLOCKED_SUFFIX 16
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#include "interlocked_ops_gcc.h"
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#undef INTERLOCKED_TYPE
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#undef INTERLOCKED_SUFFIX
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#endif /* INTERLOCKED_INT16 */
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#if (__SIZEOF_INT__ == 4 && __GCC_ATOMIC_INT_LOCK_FREE == 2) || \
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(__SIZEOF_LONG__ == 4)
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#define INTERLOCKED_INT32
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#define INTERLOCKED_TYPE Sint32
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#define INTERLOCKED_SUFFIX 32
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#include "interlocked_ops_gcc.h"
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#undef INTERLOCKED_TYPE
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#undef INTERLOCKED_SUFFIX
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#endif /* INTERLOCKED_INT32 */
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#if (__SIZEOF_LONG_LONG__ == 8 && __GCC_ATOMIC_LONG_LONG_LOCK_FREE == 2) || \
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(__SIZEOF_LONG__ == 8)
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#define INTERLOCKED_INT64
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#define INTERLOCKED_TYPE Sint64
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#define INTERLOCKED_SUFFIX 64
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#include "interlocked_ops_gcc.h"
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#undef INTERLOCKED_TYPE
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#undef INTERLOCKED_SUFFIX
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#endif /* INTERLOCKED_INT64 */
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/******************************************************************************
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* ATOMICS ON LONG INTEGERS *
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******************************************************************************/
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#define INTERLOCKED_TYPE long
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#define INTERLOCKED_SUFFIX
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#include "interlocked_ops_gcc.h"
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#undef INTERLOCKED_TYPE
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#undef INTERLOCKED_SUFFIX
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/******************************************************************************
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* ATOMICS ON POINTERS *
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******************************************************************************/
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#define INTERLOCKED_TYPE void *
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#define INTERLOCKED_SUFFIX Ptr
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#define INTERLOCKED_NO_ARIT
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#include "interlocked_ops_gcc.h"
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#undef INTERLOCKED_TYPE
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#undef INTERLOCKED_SUFFIX
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#undef INTERLOCKED_NO_ARIT
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#endif
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#endif
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