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36 lines
937 B
C
36 lines
937 B
C
#pragma once
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#include <_libc/list.h>
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#include <stddef.h>
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#include <stdint.h>
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#define BLOCK_ALLOC 1
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#define BLOCK_MMAP 2
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#define BLOCK_MAGIC_MASK 0xFFFFFFC
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#define BLOCK_MAGIC 0xBAD8EA0
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// Fits ~56 blocks of 256
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#define SMALL_ZONE_ELEM 256
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#define SMALL_ZONE_SIZE (4 * 0x1000)
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// Fits ~31 block of 2K
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#define MID_ZONE_ELEM 2048
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#define MID_ZONE_SIZE (16 * 0x1000)
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// Fits ~15 blocks of 8K
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#define LARGE_ZONE_ELEM 8192
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#define LARGE_ZONE_SIZE (32 * 0x1000)
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// Larger objects are allocated directly using mmap()
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struct block {
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struct block *prev, *next;
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uint32_t flags, size;
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};
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struct zone {
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size_t size;
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struct list_head list;
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};
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extern struct list_head small_zone_list, mid_zone_list, large_zone_list;
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struct zone *zone_create(size_t size);
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void zone_destroy(struct zone *zone);
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