lwp_heap.h

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#ifndef __LWP_HEAP_H__
#define __LWP_HEAP_H__

#include <gctypes.h>
#include "machine/asm.h"

#define HEAP_BLOCK_USED                 1
#define HEAP_BLOCK_FREE                 0

#define HEAP_DUMMY_FLAG                 (0+HEAP_BLOCK_USED)

#define HEAP_OVERHEAD                   (sizeof(u32)*2)
#define HEAP_BLOCK_USED_OVERHEAD        (sizeof(void*)*2)
#define HEAP_MIN_SIZE                   (HEAP_OVERHEAD+sizeof(heap_block))

#ifdef __cplusplus
extern "C" {
#endif

typedef struct _heap_block_st heap_block;
struct _heap_block_st {
    u32 back_flag;
    u32 front_flag;
    heap_block *next;
    heap_block *prev;
};

typedef struct _heap_iblock_st {
    u32 free_blocks;
    u32 free_size;
    u32 used_blocks;
    u32 used_size;
} heap_iblock;

typedef struct _heap_cntrl_st {
    heap_block *start;
    heap_block *final;

    heap_block *first;
    heap_block *perm_null;
    heap_block *last;
    u32 pg_size;
    u32 reserved;
} heap_cntrl;

u32 __lwp_heap_init(heap_cntrl *theheap,void *start_addr,u32 size,u32 pg_size);
void* __lwp_heap_allocate(heap_cntrl *theheap,u32 size);
BOOL __lwp_heap_free(heap_cntrl *theheap,void *ptr);
u32 __lwp_heap_getinfo(heap_cntrl *theheap,heap_iblock *theinfo);

#ifdef LIBOGC_INTERNAL
#include <libogc/lwp_heap.inl>
#endif

#ifdef __cplusplus
    }
#endif

#endif