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/*
* The MIT License
*
* Wavefront Alignment Algorithms
* Copyright (c) 2017 by Santiago Marco-Sola <santiagomsola@gmail.com>
*
* This file is part of Wavefront Alignment Algorithms.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* PROJECT: Wavefront Alignment Algorithms
* AUTHOR(S): Santiago Marco-Sola <santiagomsola@gmail.com>
* DESCRIPTION: Basic bitmap datastructure (static)
*/
#ifndef BITMAP_H_
#define BITMAP_H_
/*
* Includes
*/
#include "system/mm_allocator.h"
#define BITMAP_BLOCK_ELEMENTS 64
#define BITMAP_BLOCK_MASK 0x0000000000000001ul
/*
* Utils
*/
#define BITMAP_PREFETCH_BLOCK(bm,position) \
PREFETCH(bm->bitmap_blocks+(position/BITMAP_BLOCK_ELEMENTS))
#define BITMAP_GET_BLOCK(bm,position,block_bitmap_ptr) \
const uint64_t block_num = position / BITMAP_BLOCK_ELEMENTS; \
uint64_t* const block_bitmap_ptr = &(bm->bitmap_blocks[block_num].bitmap)
#define BM_BLOCK_IS_SET(block_bitmap,position) \
(block_bitmap & (BITMAP_BLOCK_MASK << (position % BITMAP_BLOCK_ELEMENTS)))
#define BM_BLOCK_SET(block_bitmap,position) \
(block_bitmap |= (BITMAP_BLOCK_MASK << (position % BITMAP_BLOCK_ELEMENTS)))
/*
* Bitmap
*/
typedef struct {
uint64_t counter;
uint64_t bitmap;
} bitmap_block_t;
typedef struct {
// Bitmap
uint64_t num_blocks;
bitmap_block_t* bitmap_blocks;
// MM
mm_allocator_t* mm_allocator;
} bitmap_t;
/*
* Setup
*/
bitmap_t* bitmap_new(
const uint64_t length,
mm_allocator_t* const mm_allocator);
void bitmap_delete(
bitmap_t* const bitmap);
/*
* Accessors
*/
void bitmap_set(
bitmap_t* const bitmap,
const uint64_t pos);
bool bitmap_is_set(
bitmap_t* const bitmap,
const uint64_t pos);
bool bitmap_check__set(
bitmap_t* const bitmap,
const uint64_t pos);
/*
* Rank
*/
void bitmap_update_counters(
bitmap_t* const bitmap);
uint64_t bitmap_erank(
bitmap_t* const bitmap,
const uint64_t pos);
#endif /* BITMAP_H_ */
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