/*
* Copyright (c) 2008-2021 Jonathan Schleifer <js@nil.im>
*
* All rights reserved.
*
* This file is part of ObjFW. It may be distributed under the terms of the
* Q Public License 1.0, which can be found in the file LICENSE.QPL included in
* the packaging of this file.
*
* Alternatively, it may be distributed under the terms of the GNU General
* Public License, either version 2 or 3, which can be found in the file
* LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
* file.
*/
static OF_INLINE int
OFAtomicIntAdd(volatile int *_Nonnull p, int i)
{
return (*p += i);
}
static OF_INLINE int32_t
OFAtomicInt32Add(volatile int32_t *_Nonnull p, int32_t i)
{
return (*p += i);
}
static OF_INLINE void *_Nullable
OFAtomicPointerAdd(void *volatile _Nullable *_Nonnull p, intptr_t i)
{
return (*(char *volatile *)p += i);
}
static OF_INLINE int
OFAtomicIntSubtract(volatile int *_Nonnull p, int i)
{
return (*p -= i);
}
static OF_INLINE int32_t
OFAtomicInt32Subtract(volatile int32_t *_Nonnull p, int32_t i)
{
return (*p -= i);
}
static OF_INLINE void *_Nullable
OFAtomicPointerSubtract(void *volatile _Nullable *_Nonnull p, intptr_t i)
{
return (*(char *volatile *)p -= i);
}
static OF_INLINE int
OFAtomicIntIncrease(volatile int *_Nonnull p)
{
return ++*p;
}
static OF_INLINE int32_t
OFAtomicInt32Increase(volatile int32_t *_Nonnull p)
{
return ++*p;
}
static OF_INLINE int
OFAtomicIntDecrease(volatile int *_Nonnull p)
{
return --*p;
}
static OF_INLINE int32_t
OFAtomicInt32Decrease(volatile int32_t *_Nonnull p)
{
return --*p;
}
static OF_INLINE unsigned int
OFAtomicIntOr(volatile unsigned int *_Nonnull p, unsigned int i)
{
return (*p |= i);
}
static OF_INLINE uint32_t
OFAtomicInt32Or(volatile uint32_t *_Nonnull p, uint32_t i)
{
return (*p |= i);
}
static OF_INLINE unsigned int
OFAtomicIntAnd(volatile unsigned int *_Nonnull p, unsigned int i)
{
return (*p &= i);
}
static OF_INLINE uint32_t
OFAtomicInt32And(volatile uint32_t *_Nonnull p, uint32_t i)
{
return (*p &= i);
}
static OF_INLINE unsigned int
OFAtomicIntXor(volatile unsigned int *_Nonnull p, unsigned int i)
{
return (*p ^= i);
}
static OF_INLINE uint32_t
OFAtomicInt32Xor(volatile uint32_t *_Nonnull p, uint32_t i)
{
return (*p ^= i);
}
static OF_INLINE bool
OFAtomicIntCompareSwap(volatile int *_Nonnull p, int o, int n)
{
if (*p == o) {
*p = n;
return true;
}
return false;
}
static OF_INLINE bool
OFAtomicInt32CompareAndSwap(volatile int32_t *_Nonnull p, int32_t o, int32_t n)
{
if (*p == o) {
*p = n;
return true;
}
return false;
}
static OF_INLINE bool
OFAtomicPointerCompareAndSwap(void *volatile _Nullable *_Nonnull p,
void *_Nullable o, void *_Nullable n)
{
if (*p == o) {
*p = n;
return true;
}
return false;
}
static OF_INLINE void
of_memory_barrier(void)
{
/* nop */
}
static OF_INLINE void
of_memory_barrier_acquire(void)
{
/* nop */
}
static OF_INLINE void
of_memory_barrier_release(void)
{
/* nop */
}