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|
/* Copyright (c) 2013, Linaro Limited
* All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
/**
* @file
*
* ODP atomic operations
*/
#ifndef ODP_ATOMIC_H_
#define ODP_ATOMIC_H_
#ifdef __cplusplus
extern "C" {
#endif
#include <odp_std_types.h>
/**
* Atomic integer
*/
typedef int32_t odp_atomic_int_t;
/**
* Atomic unsigned integer 64 bits
*/
typedef uint64_t odp_atomic_u64_t;
/**
* Atomic unsigned integer 32 bits
*/
typedef uint32_t odp_atomic_u32_t;
/**
* Initialize atomic integer
*
* @param ptr An integer atomic variable
*
*/
static inline void odp_atomic_init_int(odp_atomic_int_t *ptr)
{
*ptr = 0;
}
/**
* Load value of atomic integer
*
* @param ptr An atomic variable
*
* @return atomic integer value
*/
static inline int odp_atomic_load_int(odp_atomic_int_t *ptr)
{
return *ptr;
}
/**
* Store value to atomic integer
*
* @param ptr An atomic variable
* @param new_value Store new_value to a variable
*
*/
static inline void odp_atomic_store_int(odp_atomic_int_t *ptr, int new_value)
{
*ptr = new_value;
}
/**
* Fetch and add atomic integer
*
* @param ptr An atomic variable
* @param value A value to be added to the variable
*
* @return Value of the variable before the operation
*/
static inline int odp_atomic_fetch_add_int(odp_atomic_int_t *ptr, int value)
{
return __sync_fetch_and_add(ptr, value);
}
/**
* Fetch and substract atomic integer
*
* @param ptr An atomic int variable
* @param value A value to be subtracted from the variable
*
* @return Value of the variable before the operation
*/
static inline int odp_atomic_fetch_sub_int(odp_atomic_int_t *ptr, int value)
{
return __sync_fetch_and_sub(ptr, value);
}
/**
* Increment atomic integer by 1
*
* @param ptr An atomic variable
*
*/
static inline void odp_atomic_inc_int(odp_atomic_int_t *ptr)
{
odp_atomic_fetch_add_int(ptr, 1);
}
/**
* Decrement atomic integer by 1
*
* @param ptr An atomic variable
*
*/
static inline void odp_atomic_dec_int(odp_atomic_int_t *ptr)
{
odp_atomic_fetch_sub_int(ptr, 1);
}
/**
* Initialize atomic uint32
*
* @param ptr An atomic variable
*
*/
static inline void odp_atomic_init_u32(odp_atomic_u32_t *ptr)
{
*ptr = 0;
}
/**
* Load value of atomic uint32
*
* @param ptr An atomic variable
*
* @return atomic uint32 value
*/
static inline uint32_t odp_atomic_load_u32(odp_atomic_u32_t *ptr)
{
return *ptr;
}
/**
* Store value to atomic uint32
*
* @param ptr An atomic variable
* @param new_value Store new_value to a variable
*
*/
static inline void odp_atomic_store_u32(odp_atomic_u32_t *ptr,
uint32_t new_value)
{
*ptr = new_value;
}
/**
* Fetch and add atomic uint32
*
* @param ptr An atomic variable
* @param value A value to be added to the variable
*
* @return Value of the variable before the operation
*/
static inline uint32_t odp_atomic_fetch_add_u32(odp_atomic_u32_t *ptr,
uint32_t value)
{
return __sync_fetch_and_add(ptr, value);
}
/**
* Fetch and substract uint32
*
* @param ptr An atomic variable
* @param value A value to be sub to the variable
*
* @return Value of the variable before the operation
*/
static inline uint32_t odp_atomic_fetch_sub_u32(odp_atomic_u32_t *ptr,
uint32_t value)
{
return __sync_fetch_and_sub(ptr, value);
}
/**
* Increment atomic uint32 by 1
*
* @param ptr An atomic variable
*
*/
static inline void odp_atomic_inc_u32(odp_atomic_u32_t *ptr)
{
odp_atomic_fetch_add_u32(ptr, 1);
}
/**
* Decrement atomic uint32 by 1
*
* @param ptr An atomic variable
*
*/
static inline void odp_atomic_dec_u32(odp_atomic_u32_t *ptr)
{
odp_atomic_fetch_sub_u32(ptr, 1);
}
/**
* Initialize atomic uint64
*
* @param ptr An atomic variable
*
*/
static inline void odp_atomic_init_u64(odp_atomic_u64_t *ptr)
{
*ptr = 0;
}
/**
* Load value of atomic uint64
*
* @param ptr An atomic variable
*
* @return atomic uint64 value
*/
static inline uint64_t odp_atomic_load_u64(odp_atomic_u64_t *ptr)
{
return *ptr;
}
/**
* Store value to atomic uint64
*
* @param ptr An atomic variable
* @param new_value Store new_value to a variable
*
*/
static inline void odp_atomic_store_u64(odp_atomic_u64_t *ptr,
uint64_t new_value)
{
*ptr = new_value;
}
/**
* Add atomic uint64
*
* @param ptr An atomic variable
* @param value A value to be added to the variable
*
*/
static inline void odp_atomic_add_u64(odp_atomic_u64_t *ptr, uint64_t value)
{
__sync_fetch_and_add(ptr, value);
}
/**
* Fetch and add atomic uint64
*
* @param ptr An atomic variable
* @param value A value to be added to the variable
*
* @return Value of the variable before the operation
*/
static inline uint64_t odp_atomic_fetch_add_u64(odp_atomic_u64_t *ptr,
uint64_t value)
{
return __sync_fetch_and_add(ptr, value);
}
/**
* Subtract atomic uint64
*
* @param ptr An atomic variable
* @param value A value to be subtracted from the variable
*
*/
static inline void odp_atomic_sub_u64(odp_atomic_u64_t *ptr, uint64_t value)
{
__sync_fetch_and_sub(ptr, value);
}
/**
* Fetch and subtract atomic uint64
*
* @param ptr An atomic variable
* @param value A value to be subtracted from the variable
*
* @return Value of the variable before the operation
*/
static inline uint64_t odp_atomic_fetch_sub_u64(odp_atomic_u64_t *ptr,
uint64_t value)
{
return __sync_fetch_and_sub(ptr, value);
}
/**
* Increment atomic uint64 by 1
*
* @param ptr An atomic variable
*
*/
static inline void odp_atomic_inc_u64(odp_atomic_u64_t *ptr)
{
odp_atomic_fetch_add_u64(ptr, 1);
}
/**
* Deccrement atomic uint64 by 1
*
* @param ptr An atomic variable
*
*/
static inline void odp_atomic_dec_u64(odp_atomic_u64_t *ptr)
{
odp_atomic_fetch_sub_u64(ptr, 1);
}
#ifdef __cplusplus
}
#endif
#endif
|
