api/abi-default/atomic.h

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/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright (c) 2015-2018 Linaro Limited
 * Copyright (c) 2021 ARM Limited
 */
 
#ifndef ODP_ABI_ATOMIC_H_
#define ODP_ABI_ATOMIC_H_
 
#ifdef __cplusplus
extern "C" {
#endif
 
#include <odp/api/std_types.h>
#include <odp/api/align.h>
 
typedef struct ODP_ALIGNED(sizeof(uint32_t)) odp_atomic_u32_s {
    uint32_t v; 
} odp_atomic_u32_t;
 
#if __GCC_ATOMIC_LLONG_LOCK_FREE >= 2
 
typedef struct ODP_ALIGNED(sizeof(uint64_t)) odp_atomic_u64_s {
    uint64_t v; 
} odp_atomic_u64_t;
 
#else
 
#define ODP_ATOMIC_U64_LOCK 1
 
typedef struct ODP_ALIGNED(sizeof(uint64_t)) odp_atomic_u64_s {
    uint64_t v; 
    /* Some architectures do not support lock-free operations on 64-bit
     * data types. We use a spin lock to ensure atomicity. */
    char lock; 
} odp_atomic_u64_t;
 
#endif
 
#if defined(__SIZEOF_INT128__) || defined(_ODP_LOCK_FREE_128BIT_ATOMICS)
 
typedef struct ODP_ALIGNED(sizeof(odp_u128_t)) odp_atomic_u128_s {
    odp_u128_t v; 
} odp_atomic_u128_t;
 
#else
 
typedef struct ODP_ALIGNED(sizeof(odp_u128_t)) odp_atomic_u128_s {
    odp_u128_t v; 
    /* Some architectures do not support lock-free operations on 128-bit
     * data types. We use a spin lock to ensure atomicity. */
    char lock; 
} odp_atomic_u128_t;
 
#endif
 
#ifdef __cplusplus
}
#endif
 
#endif