163 lines
3.8 KiB
C++
163 lines
3.8 KiB
C++
/*
|
|
* Copyright (c) 2016 MariaDB Corporation Ab
|
|
*
|
|
* Use of this software is governed by the Business Source License included
|
|
* in the LICENSE.TXT file and at www.mariadb.com/bsl11.
|
|
*
|
|
* Change Date: 2020-01-01
|
|
*
|
|
* On the date above, in accordance with the Business Source License, use
|
|
* of this software will be governed by version 2 or later of the General
|
|
* Public License.
|
|
*/
|
|
|
|
#include <maxscale/atomic.h>
|
|
|
|
/**
|
|
* @file atomic.c - Implementation of atomic operations for MaxScale
|
|
*/
|
|
|
|
int atomic_add(int *variable, int value)
|
|
{
|
|
#ifdef MXS_USE_ATOMIC_BUILTINS
|
|
return __atomic_fetch_add(variable, value, __ATOMIC_SEQ_CST);
|
|
#else
|
|
return __sync_fetch_and_add(variable, value);
|
|
#endif
|
|
}
|
|
|
|
uint32_t atomic_add_uint32(uint32_t *variable, int32_t value)
|
|
{
|
|
#ifdef MXS_USE_ATOMIC_BUILTINS
|
|
return __atomic_fetch_add(variable, value, __ATOMIC_SEQ_CST);
|
|
#else
|
|
return __sync_fetch_and_add(variable, value);
|
|
#endif
|
|
}
|
|
|
|
int64_t atomic_add_int64(int64_t *variable, int64_t value)
|
|
{
|
|
#ifdef MXS_USE_ATOMIC_BUILTINS
|
|
return __atomic_fetch_add(variable, value, __ATOMIC_SEQ_CST);
|
|
#else
|
|
return __sync_fetch_and_add(variable, value);
|
|
#endif
|
|
}
|
|
|
|
uint64_t atomic_add_uint64(uint64_t *variable, int64_t value)
|
|
{
|
|
#ifdef MXS_USE_ATOMIC_BUILTINS
|
|
return __atomic_fetch_add(variable, value, __ATOMIC_SEQ_CST);
|
|
#else
|
|
return __sync_fetch_and_add(variable, value);
|
|
#endif
|
|
}
|
|
|
|
int atomic_load_int(const int *variable)
|
|
{
|
|
#ifdef MXS_USE_ATOMIC_BUILTINS
|
|
return __atomic_load_n(variable, __ATOMIC_SEQ_CST);
|
|
#else
|
|
return __sync_fetch_and_or(variable, 0);
|
|
#endif
|
|
}
|
|
|
|
int32_t atomic_load_int32(const int32_t *variable)
|
|
{
|
|
#ifdef MXS_USE_ATOMIC_BUILTINS
|
|
return __atomic_load_n(variable, __ATOMIC_SEQ_CST);
|
|
#else
|
|
return __sync_fetch_and_or(variable, 0);
|
|
#endif
|
|
}
|
|
|
|
int64_t atomic_load_int64(const int64_t *variable)
|
|
{
|
|
#ifdef MXS_USE_ATOMIC_BUILTINS
|
|
return __atomic_load_n(variable, __ATOMIC_SEQ_CST);
|
|
#else
|
|
return __sync_fetch_and_or(variable, 0);
|
|
#endif
|
|
}
|
|
|
|
uint32_t atomic_load_uint32(const uint32_t *variable)
|
|
{
|
|
#ifdef MXS_USE_ATOMIC_BUILTINS
|
|
return __atomic_load_n(variable, __ATOMIC_SEQ_CST);
|
|
#else
|
|
return __sync_fetch_and_or(variable, 0);
|
|
#endif
|
|
}
|
|
|
|
uint64_t atomic_load_uint64(const uint64_t *variable)
|
|
{
|
|
#ifdef MXS_USE_ATOMIC_BUILTINS
|
|
return __atomic_load_n(variable, __ATOMIC_SEQ_CST);
|
|
#else
|
|
return __sync_fetch_and_or(variable, 0);
|
|
#endif
|
|
}
|
|
|
|
void* atomic_load_ptr(void * const *variable)
|
|
{
|
|
#ifdef MXS_USE_ATOMIC_BUILTINS
|
|
return __atomic_load_n(variable, __ATOMIC_SEQ_CST);
|
|
#else
|
|
return __sync_fetch_and_or((void **)variable, 0);
|
|
#endif
|
|
}
|
|
|
|
void atomic_store_int32(int *variable, int value)
|
|
{
|
|
#ifdef MXS_USE_ATOMIC_BUILTINS
|
|
__atomic_store_n(variable, value, __ATOMIC_SEQ_CST);
|
|
#else
|
|
__sync_synchronize();
|
|
*variable = value;
|
|
__sync_synchronize();
|
|
#endif
|
|
}
|
|
|
|
void atomic_store_int64(int64_t *variable, int64_t value)
|
|
{
|
|
#ifdef MXS_USE_ATOMIC_BUILTINS
|
|
__atomic_store_n(variable, value, __ATOMIC_SEQ_CST);
|
|
#else
|
|
__sync_synchronize();
|
|
*variable = value;
|
|
__sync_synchronize();
|
|
#endif
|
|
}
|
|
|
|
void atomic_store_uint64(uint64_t *variable, uint64_t value)
|
|
{
|
|
#ifdef MXS_USE_ATOMIC_BUILTINS
|
|
__atomic_store_n(variable, value, __ATOMIC_SEQ_CST);
|
|
#else
|
|
__sync_synchronize();
|
|
*variable = value;
|
|
__sync_synchronize();
|
|
#endif
|
|
}
|
|
|
|
void atomic_store_ptr(void **variable, void *value)
|
|
{
|
|
#ifdef MXS_USE_ATOMIC_BUILTINS
|
|
__atomic_store_n(variable, value, __ATOMIC_SEQ_CST);
|
|
#else
|
|
__sync_synchronize();
|
|
*variable = value;
|
|
__sync_synchronize();
|
|
#endif
|
|
}
|
|
|
|
bool atomic_cas_ptr(void **variable, void** old_value, void *new_value)
|
|
{
|
|
#ifdef MXS_USE_ATOMIC_BUILTINS
|
|
return __atomic_compare_exchange_n(variable, old_value, new_value,
|
|
false, __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST);
|
|
#else
|
|
return __sync_bool_compare_and_swap(variable, *old_value, new_value);
|
|
#endif
|
|
}
|