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/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 2008-2010. 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%
*/
/*
* Native ethread atomics on TILE64/TILEPro.
*
*/
#ifndef ETHREAD_TILE_ATOMIC_H
#define ETHREAD_TILE_ATOMIC_H
#include <atomic.h>
/* An atomic is an aligned int accessed via locked operations.
*/
typedef struct {
volatile long counter;
} ethr_native_atomic_t;
#define ETHR_MEMORY_BARRIER __insn_mf()
#ifdef ETHR_TRY_INLINE_FUNCS
static ETHR_INLINE void
ethr_native_atomic_init(ethr_native_atomic_t *var, long i)
{
var->counter = i;
}
static ETHR_INLINE void
ethr_native_atomic_set(ethr_native_atomic_t *var, long i)
{
__insn_mf();
atomic_exchange_acq(&var->counter, i);
}
static ETHR_INLINE long
ethr_native_atomic_read(ethr_native_atomic_t *var)
{
return var->counter;
}
static ETHR_INLINE void
ethr_native_atomic_add(ethr_native_atomic_t *var, long incr)
{
__insn_mf();
atomic_add(&var->counter, incr);
}
static ETHR_INLINE void
ethr_native_atomic_inc(ethr_native_atomic_t *var)
{
__insn_mf();
atomic_increment(&var->counter);
}
static ETHR_INLINE void
ethr_native_atomic_dec(ethr_native_atomic_t *var)
{
__insn_mf();
atomic_decrement(&var->counter);
}
static ETHR_INLINE long
ethr_native_atomic_add_return(ethr_native_atomic_t *var, long incr)
{
__insn_mf();
return atomic_exchange_and_add(&var->counter, incr) + incr;
}
static ETHR_INLINE long
ethr_native_atomic_inc_return(ethr_native_atomic_t *var)
{
return ethr_native_atomic_add_return(var, 1);
}
static ETHR_INLINE long
ethr_native_atomic_dec_return(ethr_native_atomic_t *var)
{
return ethr_native_atomic_add_return(var, -1);
}
static ETHR_INLINE long
ethr_native_atomic_and_retold(ethr_native_atomic_t *var, long mask)
{
/* Implement a barrier suitable for a mutex unlock. */
__insn_mf();
return atomic_and_val(&var->counter, mask);
}
static ETHR_INLINE long
ethr_native_atomic_or_retold(ethr_native_atomic_t *var, long mask)
{
__insn_mf();
return atomic_or_val(&var->counter, mask);
}
static ETHR_INLINE long
ethr_native_atomic_xchg(ethr_native_atomic_t *var, long val)
{
__insn_mf();
return atomic_exchange_acq(&var->counter, val);
}
static ETHR_INLINE long
ethr_native_atomic_cmpxchg(ethr_native_atomic_t *var, long new, long expected)
{
/* Implement a barrier suitable for a mutex unlock. */
__insn_mf();
return atomic_compare_and_exchange_val_acq(&var->counter, new, expected);
}
#endif /* ETHR_TRY_INLINE_FUNCS */
#endif /* ETHREAD_TILE_ATOMIC_H */
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