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/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 2010. All Rights Reserved.
*
* The contents of this file are subject to the Erlang Public License,
* Version 1.1, (the "License"); you may not use this file except in
* compliance with the License. You should have received a copy of the
* Erlang Public License along with this software. If not, it can be
* retrieved online at http://www.erlang.org/.
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
* %CopyrightEnd%
*/
/*
* Description: The ethread atomic API
* Author: Rickard Green
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#define ETHR_INLINE_FUNC_NAME_(X) X ## __
#define ETHR_ATOMIC_IMPL__
#include "ethread.h"
#include "ethr_internal.h"
#ifndef ETHR_HAVE_NATIVE_ATOMICS
ethr_atomic_protection_t ethr_atomic_protection__[1 << ETHR_ATOMIC_ADDR_BITS];
#endif
int
ethr_init_atomics(void)
{
#ifndef ETHR_HAVE_NATIVE_ATOMICS
{
int i;
for (i = 0; i < (1 << ETHR_ATOMIC_ADDR_BITS); i++) {
res = ethr_spinlock_init(ðr_atomic_protection__[i].u.lck);
if (res != 0)
return res;
}
}
#endif
return 0;
}
void
ethr_atomic_init(ethr_atomic_t *var, ethr_sint_t i)
{
ETHR_ASSERT(var);
ethr_atomic_init__(var, i);
}
void
ethr_atomic_set(ethr_atomic_t *var, ethr_sint_t i)
{
ETHR_ASSERT(!ethr_not_inited__);
ETHR_ASSERT(var);
ethr_atomic_set__(var, i);
}
ethr_sint_t
ethr_atomic_read(ethr_atomic_t *var)
{
ETHR_ASSERT(!ethr_not_inited__);
ETHR_ASSERT(var);
return ethr_atomic_read__(var);
}
ethr_sint_t
ethr_atomic_add_read(ethr_atomic_t *var, ethr_sint_t incr)
{
ETHR_ASSERT(!ethr_not_inited__);
ETHR_ASSERT(var);
return ethr_atomic_add_read__(var, incr);
}
ethr_sint_t
ethr_atomic_inc_read(ethr_atomic_t *var)
{
ETHR_ASSERT(!ethr_not_inited__);
ETHR_ASSERT(var);
return ethr_atomic_inc_read__(var);
}
ethr_sint_t
ethr_atomic_dec_read(ethr_atomic_t *var)
{
ETHR_ASSERT(!ethr_not_inited__);
ETHR_ASSERT(var);
return ethr_atomic_dec_read__(var);
}
void
ethr_atomic_add(ethr_atomic_t *var, ethr_sint_t incr)
{
ETHR_ASSERT(!ethr_not_inited__);
ETHR_ASSERT(var);
ethr_atomic_add__(var, incr);
}
void
ethr_atomic_inc(ethr_atomic_t *var)
{
ETHR_ASSERT(!ethr_not_inited__);
ETHR_ASSERT(var);
ethr_atomic_inc__(var);
}
void
ethr_atomic_dec(ethr_atomic_t *var)
{
ETHR_ASSERT(!ethr_not_inited__);
ETHR_ASSERT(var);
ethr_atomic_dec__(var);
}
ethr_sint_t
ethr_atomic_read_band(ethr_atomic_t *var, ethr_sint_t mask)
{
ETHR_ASSERT(!ethr_not_inited__);
ETHR_ASSERT(var);
return ethr_atomic_read_band__(var, mask);
}
ethr_sint_t
ethr_atomic_read_bor(ethr_atomic_t *var, ethr_sint_t mask)
{
ETHR_ASSERT(!ethr_not_inited__);
ETHR_ASSERT(var);
return ethr_atomic_read_bor__(var, mask);
}
ethr_sint_t
ethr_atomic_xchg(ethr_atomic_t *var, ethr_sint_t new)
{
ETHR_ASSERT(!ethr_not_inited__);
ETHR_ASSERT(var);
return ethr_atomic_xchg__(var, new);
}
ethr_sint_t
ethr_atomic_cmpxchg(ethr_atomic_t *var, ethr_sint_t new, ethr_sint_t expected)
{
ETHR_ASSERT(!ethr_not_inited__);
ETHR_ASSERT(var);
return ethr_atomic_cmpxchg__(var, new, expected);
}
ethr_sint_t
ethr_atomic_read_acqb(ethr_atomic_t *var)
{
ETHR_ASSERT(!ethr_not_inited__);
ETHR_ASSERT(var);
return ethr_atomic_read_acqb__(var);
}
ethr_sint_t
ethr_atomic_inc_read_acqb(ethr_atomic_t *var)
{
ETHR_ASSERT(!ethr_not_inited__);
ETHR_ASSERT(var);
return ethr_atomic_inc_read_acqb__(var);
}
void
ethr_atomic_set_relb(ethr_atomic_t *var, ethr_sint_t i)
{
ETHR_ASSERT(!ethr_not_inited__);
ETHR_ASSERT(var);
ethr_atomic_set_relb__(var, i);
}
void
ethr_atomic_dec_relb(ethr_atomic_t *var)
{
ETHR_ASSERT(!ethr_not_inited__);
ETHR_ASSERT(var);
ethr_atomic_dec_relb__(var);
}
ethr_sint_t
ethr_atomic_dec_read_relb(ethr_atomic_t *var)
{
ETHR_ASSERT(!ethr_not_inited__);
ETHR_ASSERT(var);
return ethr_atomic_dec_read_relb__(var);
}
ethr_sint_t
ethr_atomic_cmpxchg_acqb(ethr_atomic_t *var, ethr_sint_t new, ethr_sint_t exp)
{
ETHR_ASSERT(!ethr_not_inited__);
ETHR_ASSERT(var);
return ethr_atomic_cmpxchg_acqb__(var, new, exp);
}
ethr_sint_t
ethr_atomic_cmpxchg_relb(ethr_atomic_t *var, ethr_sint_t new, ethr_sint_t exp)
{
ETHR_ASSERT(!ethr_not_inited__);
ETHR_ASSERT(var);
return ethr_atomic_cmpxchg_relb__(var, new, exp);
}
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