1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
|
#ifndef BLT_POOL_H
#define BLT_POOL_H
typedef struct Blt_PoolChainStruct {
struct Blt_PoolChainStruct *nextPtr;
} Blt_PoolChain;
#define BLT_STRING_ITEMS 0
#define BLT_FIXED_SIZE_ITEMS 1
#define BLT_VARIABLE_SIZE_ITEMS 2
typedef struct Blt_PoolStruct *Blt_Pool;
typedef void *(Blt_PoolAllocProc) _ANSI_ARGS_((Blt_Pool pool, size_t size));
typedef void (Blt_PoolFreeProc) _ANSI_ARGS_((Blt_Pool pool, void *item));
struct Blt_PoolStruct {
Blt_PoolChain *headPtr; /* Chain of malloc'ed chunks. */
Blt_PoolChain *freePtr; /* List of deleted items. This is only used
* for fixed size items. */
size_t poolSize; /* Log2 of # of items in the current block. */
size_t itemSize; /* Size of an item. */
size_t bytesLeft; /* # of bytes left in the current chunk. */
size_t waste;
Blt_PoolAllocProc *allocProc;
Blt_PoolFreeProc *freeProc;
};
EXTERN Blt_Pool Blt_PoolCreate _ANSI_ARGS_((int type));
EXTERN void Blt_PoolDestroy _ANSI_ARGS_((Blt_Pool pool));
#define Blt_PoolAllocItem(poolPtr, n) (*((poolPtr)->allocProc))(poolPtr, n)
#define Blt_PoolFreeItem(poolPtr, item) (*((poolPtr)->freeProc))(poolPtr, item)
#endif /* BLT_POOL_H */
|
