37 lines
No EOL
925 B
C
37 lines
No EOL
925 B
C
#ifndef __CUTIL_HEAP_H
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#define __CUTIL_HEAP_H
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#include "cutypes.h"
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typedef struct mblock_s {
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struct mblock_s* prev;
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struct mblock_s* next;
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uword size;
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u8 data[1];
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} mblock_t;
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typedef struct {
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u8* data;
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uword size;
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} mheap_t;
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#ifdef CU_64BIT
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# define MBLOCK_ALIGN 5
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#else
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# define MBLOCK_ALIGN 4
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#endif
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#define MBLOCK_SIZE (CU_WORD_SIZE*3)
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#define MBLOCK_SIZE_MASK ((CU_WORD_BITS/8) - 1)
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#define MBLOCK_ALIGN_SIZE(size) (cu_round2_up((size), MBLOCK_ALIGN))
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#define MBLOCK_ATTR_ALLOC (1<<0)
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#define IS_MBLOCK_ALLOC(mblock) (mblock->size & MBLOCK_ATTR_ALLOC)
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void heap_init(mheap_t* heap, void* data, uword size);
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void heap_join(mblock_t* start, int dir);
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void heap_split(mblock_t* block, size_t req_size);
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void* heap_alloc(mheap_t* heap, size_t size);
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void* heap_realloc(mheap_t* heap, void* mem, size_t size);
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void heap_free(mheap_t* heap, void* mem);
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#endif |