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kernel-dev-old/src/include/kernel/memm/allocator/raw.h

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2023-12-13 02:24:25 +08:00
#ifndef RAW_H
#define RAW_H 1
#include <types.h>
#define MEMM_RAW_ALLOCATOR 1
typedef struct __raw_allocator_cell
{
usize capacity; // 是content的长度
usize length; // 是实际使用的长度
u8 content[0];
} raw_allocator_cell;
// 原始分配器
// 包括至少一个cell分配时像cell的分裂一样将空白的一段分成两段
// 释放时只把length归零并不将cell合并
// length=0的cell称为空cell
// 在分配时遇到第一个空cell时将紧随其后的空cell都合并掉
typedef struct __raw_allocator_t
{
usize size, reserved;
raw_allocator_cell cells[0];
} raw_allocator_t;
void raw_allocator_new(raw_allocator_t *allocator, usize size);
void *raw_allocator_allocate(raw_allocator_t *allocator, usize size, usize align);
void raw_allocator_free(raw_allocator_t *allocator, void *mem);
#endif