Viewing file:  atomic.h (4.97 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2013 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2011 Sandia National Laboratories. All rights reserved.
* Copyright (c) 2014-2017 Los Alamos National Security, LLC. All rights
* reserved.
* Copyright (c) 2017 Research Organization for Information Science
* and Technology (RIST). All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#ifndef OPAL_SYS_ARCH_ATOMIC_H
#define OPAL_SYS_ARCH_ATOMIC_H 1
/**********************************************************************
*
* Memory Barriers
*
*********************************************************************/
#define OPAL_HAVE_ATOMIC_MEM_BARRIER 1
static inline void opal_atomic_mb(void)
{
__sync_synchronize();
}
static inline void opal_atomic_rmb(void)
{
__sync_synchronize();
}
static inline void opal_atomic_wmb(void)
{
__sync_synchronize();
}
#define MB() opal_atomic_mb()
/**********************************************************************
*
* Atomic math operations
*
*********************************************************************/
#define OPAL_HAVE_ATOMIC_COMPARE_EXCHANGE_32 1
static inline bool opal_atomic_compare_exchange_strong_32 (volatile int32_t *addr, int32_t *oldval, int32_t newval)
{
int32_t prev = __sync_val_compare_and_swap (addr, *oldval, newval);
bool ret = prev == *oldval;
*oldval = prev;
return ret;
}
#define opal_atomic_compare_exchange_strong_acq_32 opal_atomic_compare_exchange_strong_32
#define opal_atomic_compare_exchange_strong_rel_32 opal_atomic_compare_exchange_strong_32
#define OPAL_HAVE_ATOMIC_MATH_32 1
#define OPAL_HAVE_ATOMIC_ADD_32 1
static inline int32_t opal_atomic_fetch_add_32(volatile int32_t *addr, int32_t delta)
{
return __sync_fetch_and_add(addr, delta);
}
#define OPAL_HAVE_ATOMIC_AND_32 1
static inline int32_t opal_atomic_fetch_and_32(volatile int32_t *addr, int32_t value)
{
return __sync_fetch_and_and(addr, value);
}
#define OPAL_HAVE_ATOMIC_OR_32 1
static inline int32_t opal_atomic_fetch_or_32(volatile int32_t *addr, int32_t value)
{
return __sync_fetch_and_or(addr, value);
}
#define OPAL_HAVE_ATOMIC_XOR_32 1
static inline int32_t opal_atomic_fetch_xor_32(volatile int32_t *addr, int32_t value)
{
return __sync_fetch_and_xor(addr, value);
}
#define OPAL_HAVE_ATOMIC_SUB_32 1
static inline int32_t opal_atomic_fetch_sub_32(volatile int32_t *addr, int32_t delta)
{
return __sync_fetch_and_sub(addr, delta);
}
#if OPAL_ASM_SYNC_HAVE_64BIT
#define OPAL_HAVE_ATOMIC_COMPARE_EXCHANGE_64 1
static inline bool opal_atomic_compare_exchange_strong_64 (volatile int64_t *addr, int64_t *oldval, int64_t newval)
{
int64_t prev = __sync_val_compare_and_swap (addr, *oldval, newval);
bool ret = prev == *oldval;
*oldval = prev;
return ret;
}
#define opal_atomic_compare_exchange_strong_acq_64 opal_atomic_compare_exchange_strong_64
#define opal_atomic_compare_exchange_strong_rel_64 opal_atomic_compare_exchange_strong_64
#define OPAL_HAVE_ATOMIC_MATH_64 1
#define OPAL_HAVE_ATOMIC_ADD_64 1
static inline int64_t opal_atomic_fetch_add_64(volatile int64_t *addr, int64_t delta)
{
return __sync_fetch_and_add(addr, delta);
}
#define OPAL_HAVE_ATOMIC_AND_64 1
static inline int64_t opal_atomic_fetch_and_64(volatile int64_t *addr, int64_t value)
{
return __sync_fetch_and_and(addr, value);
}
#define OPAL_HAVE_ATOMIC_OR_64 1
static inline int64_t opal_atomic_fetch_or_64(volatile int64_t *addr, int64_t value)
{
return __sync_fetch_and_or(addr, value);
}
#define OPAL_HAVE_ATOMIC_XOR_64 1
static inline int64_t opal_atomic_fetch_xor_64(volatile int64_t *addr, int64_t value)
{
return __sync_fetch_and_xor(addr, value);
}
#define OPAL_HAVE_ATOMIC_SUB_64 1
static inline int64_t opal_atomic_fetch_sub_64(volatile int64_t *addr, int64_t delta)
{
return __sync_fetch_and_sub(addr, delta);
}
#endif
#if OPAL_HAVE_SYNC_BUILTIN_CSWAP_INT128
static inline bool opal_atomic_compare_exchange_strong_128 (volatile opal_int128_t *addr,
opal_int128_t *oldval, opal_int128_t newval)
{
opal_int128_t prev = __sync_val_compare_and_swap (addr, *oldval, newval);
bool ret = prev == *oldval;
*oldval = prev;
return ret;
}
#define OPAL_HAVE_ATOMIC_COMPARE_EXCHANGE_128 1
#endif
#endif /* ! OPAL_SYS_ARCH_ATOMIC_H */
|