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/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 2003-2013. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* %CopyrightEnd%
*/
#ifndef ERL_GOODFIT_ALLOC__
#define ERL_GOODFIT_ALLOC__
#include "erl_alloc_util.h"
#define ERTS_ALC_GF_ALLOC_VSN_STR "2.1"
typedef struct GFAllctr_t_ GFAllctr_t;
typedef struct {
UWord mbsd;
} GFAllctrInit_t;
#define ERTS_DEFAULT_GF_ALLCTR_INIT { \
3, /* (amount) mbsd: max (mbc) block search depth */\
}
void erts_gfalc_init(void);
Allctr_t *erts_gfalc_start(GFAllctr_t *, GFAllctrInit_t *, AllctrInit_t *);
#endif /* #ifndef ERL_GOODFIT_ALLOC__ */
#if defined(GET_ERL_GF_ALLOC_IMPL) && !defined(ERL_GF_ALLOC_IMPL__)
#define ERL_GF_ALLOC_IMPL__
#define GET_ERL_ALLOC_UTIL_IMPL
#include "erl_alloc_util.h"
#define NO_OF_BKT_IX_BITS (8)
#if defined(ARCH_64)
# define SUB_MASK_IX_SHIFT (6)
#else
# define SUB_MASK_IX_SHIFT (5)
#endif
#define NO_OF_BKTS (((UWord) 1) << NO_OF_BKT_IX_BITS)
#define NO_OF_SUB_MASKS (NO_OF_BKTS/(((UWord) 1) << SUB_MASK_IX_SHIFT))
typedef struct {
UWord main;
UWord sub[NO_OF_SUB_MASKS];
} BucketMask_t;
typedef struct GFFreeBlock_t_ GFFreeBlock_t;
struct GFFreeBlock_t_ {
Block_t block_head;
GFFreeBlock_t *prev;
GFFreeBlock_t *next;
};
struct GFAllctr_t_ {
Allctr_t allctr; /* Has to be first! */
char * last_aux_mbc_start;
char * last_aux_mbc_end;
UWord bkt_max_size_d;
UWord bkt_intrvl_d;
BucketMask_t bucket_mask;
GFFreeBlock_t * buckets[NO_OF_BKTS];
UWord max_blk_search;
};
UWord erts_gfalc_test(UWord, UWord, UWord);
#endif /* #if defined(GET_ERL_GF_ALLOC_IMPL)
&& !defined(ERL_GF_ALLOC_IMPL__) */
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