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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>
* VERSION: v21.02.15
* DESCRIPTION: Simple managed-memory allocator that reduces the overhead
* of using malloc/calloc/free functions by allocating slabs of memory
* and dispatching memory segments in order.
*/
#ifndef MM_ALLOCATOR_H_
#define MM_ALLOCATOR_H_
#include "utils/vector.h"
/*
* Configuration
*/
//#define MM_ALLOCATOR_LOG
#define MM_ALLOCATOR_ALIGNMENT 8 // 64bits
/*
* MM-Allocator
*/
typedef struct {
// Metadata
uint64_t request_ticker; // Request ticker
// Memory segments
uint64_t segment_size; // Memory segment size (bytes)
vector_t* segments; // Memory segments (mm_allocator_segment_t*)
vector_t* segments_free; // Completely free segments (mm_allocator_segment_t*)
uint64_t current_segment_idx; // Current segment being used (serving memory)
// Malloc memory
vector_t* malloc_requests; // Malloc requests (mm_malloc_request_t)
uint64_t malloc_requests_freed; // Total malloc request freed and still in vector
} mm_allocator_t;
/*
* Setup
*/
mm_allocator_t* mm_allocator_new(
const uint64_t segment_size);
void mm_allocator_clear(
mm_allocator_t* const mm_allocator);
void mm_allocator_delete(
mm_allocator_t* const mm_allocator);
/*
* Allocator
*/
void* mm_allocator_allocate(
mm_allocator_t* const mm_allocator,
const uint64_t num_bytes,
const bool zero_mem,
const uint64_t align_bytes
#ifdef MM_ALLOCATOR_LOG
,const char* func_name,
uint64_t line_no
#endif
);
#ifdef MM_ALLOCATOR_LOG
#define mm_allocator_alloc(mm_allocator,type) \
((type*)mm_allocator_allocate(mm_allocator,sizeof(type),false,MM_ALLOCATOR_ALIGNMENT,__func__,(uint64_t)__LINE__))
#define mm_allocator_malloc(mm_allocator,num_bytes) \
(mm_allocator_allocate(mm_allocator,num_bytes,false,MM_ALLOCATOR_ALIGNMENT,__func__,(uint64_t)__LINE__))
#define mm_allocator_calloc(mm_allocator,num_elements,type,clear_mem) \
((type*)mm_allocator_allocate(mm_allocator,(num_elements)*sizeof(type),clear_mem,MM_ALLOCATOR_ALIGNMENT,__func__,(uint64_t)__LINE__))
#else
#define mm_allocator_alloc(mm_allocator,type) \
((type*)mm_allocator_allocate(mm_allocator,sizeof(type),false,MM_ALLOCATOR_ALIGNMENT))
#define mm_allocator_malloc(mm_allocator,num_bytes) \
(mm_allocator_allocate(mm_allocator,num_bytes,false,MM_ALLOCATOR_ALIGNMENT))
#define mm_allocator_calloc(mm_allocator,num_elements,type,clear_mem) \
((type*)mm_allocator_allocate(mm_allocator,(num_elements)*sizeof(type),clear_mem,MM_ALLOCATOR_ALIGNMENT))
#endif
#define mm_allocator_uint64(mm_allocator) mm_allocator_malloc(mm_allocator,sizeof(uint64_t))
#define mm_allocator_uint32(mm_allocator) mm_allocator_malloc(mm_allocator,sizeof(uint32_t))
#define mm_allocator_uint16(mm_allocator) mm_allocator_malloc(mm_allocator,sizeof(uint16_t))
#define mm_allocator_uint8(mm_allocator) mm_allocator_malloc(mm_allocator,sizeof(uint8_t))
/*
* Free
*/
void mm_allocator_free(
mm_allocator_t* const mm_allocator,
void* const memory);
/*
* Utils
*/
void mm_allocator_get_occupation(
mm_allocator_t* const mm_allocator,
uint64_t* const bytes_used_malloc,
uint64_t* const bytes_used_allocator,
uint64_t* const bytes_free_available,
uint64_t* const bytes_free_fragmented);
/*
* Display
*/
void mm_allocator_print(
FILE* const stream,
mm_allocator_t* const mm_allocator,
const bool display_requests);
#endif /* MM_ALLOCATOR_H_ */
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