2004-07-16 04:46:01 +04:00
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/*
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Copyright (c) 2002, Thomas Kurschel
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Part of Radeon kernel driver
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Memory manager used for graphics mem
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*/
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#ifndef _MEMMGR_H
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#define _MEMMGR_H
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#include <OS.h>
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// allocated memory block
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typedef struct mem_block {
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struct mem_block *prev, *next;
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uint32 base;
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uint32 size;
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void *tag;
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bool alloced;
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} mem_block;
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// memory heap
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typedef struct mem_info {
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mem_block *first;
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2005-03-30 01:09:05 +04:00
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area_id heap_area;
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2004-07-16 04:46:01 +04:00
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uint32 block_size;
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sem_id lock;
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mem_block *heap;
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mem_block *unused;
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uint32 heap_entries;
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} mem_info;
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mem_info *mem_init( uint32 start, uint32 len, uint32 block_size, uint32 heap_entries );
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void mem_destroy( mem_info *mem );
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status_t mem_alloc( mem_info *mem, uint32 size, void *tag, uint32 *block, uint32 *offset );
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status_t mem_free( mem_info *mem, uint32 block_id, void *tag );
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void mem_freetag( mem_info *mem, void *tag );
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#endif
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