typedef struct Pool Pool;struct Pool {	char*	name;	uintptr	maxsize; 	uintptr	cursize;	uintptr	curfree;	uintptr	curalloc; 	ulong	minarena;	/* smallest size of new arena */	ulong	quantum;	/* allocated blocks should be multiple of */	ulong	minblock;	/* smallest newly allocated block */ 	void*	freeroot;	/* actually Free* */	void*	arenalist;	/* actually Arena* */ 	void*	(*alloc)(ulong);	int	(*merge)(void*, void*);	void	(*move)(void* from, void* to);	void	(*free)(void*, ulong); 	int	flags;	int	nfree;	int	lastcompact; 	void	(*lock)(Pool*);	void	(*unlock)(Pool*);	void	(*print)(Pool*, char*, ...);	void	(*panic)(Pool*, char*, ...);	void	(*logstack)(Pool*); 	void*	private;}; extern void*	poolalloc(Pool*, ulong);extern void*	poolallocalign(Pool*, ulong, ulong, long, ulong);extern void	poolfree(Pool*, void*);extern ulong	poolmsize(Pool*, void*);extern int	poolisoverlap(Pool*, void*, ulong);extern void	poolreset(Pool*);extern void*	poolrealloc(Pool*, void*, ulong);extern void	poolcheck(Pool*);extern int	poolcompact(Pool*);extern void	poolblockcheck(Pool*, void*);extern void	pooldump(Pool*); extern Pool*	mainmem;extern Pool*	imagmem;extern Pool*	secrmem; enum {	/* flags */	POOL_ANTAGONISM	= 1<<0,	POOL_PARANOIA	= 1<<1,	POOL_VERBOSITY	= 1<<2,	POOL_DEBUGGING	= 1<<3,	POOL_LOGGING	= 1<<4,	POOL_TOLERANCE	= 1<<5,	POOL_NOREUSE	= 1<<6,	POOL_SCRUB	= 1<<7,};