jehanne/sys/include/pool.h

64 lines
1.7 KiB
C

/*
* This file is part of the UCB release of Plan 9. It is subject to the license
* terms in the LICENSE file found in the top-level directory of this
* distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
* part of the UCB release of Plan 9, including this file, may be copied,
* modified, propagated, or distributed except according to the terms contained
* in the LICENSE file.
*/
typedef struct Pool Pool;
struct Pool {
char* name;
uintptr_t maxsize;
uintptr_t cursize;
uintptr_t curfree;
uintptr_t curalloc;
uint32_t minarena; /* smallest size of new arena */
uint32_t quantum; /* allocated blocks should be multiple of */
uint32_t minblock; /* smallest newly allocated block */
int flags;
int nfree;
int lastcompact;
void* freeroot; /* actually Free* */
void* arenalist; /* actually Arena* */
void* (*alloc)(uint32_t);
int (*merge)(void*, void*);
void (*move)(void* from, void* to);
void (*lock)(Pool*);
void (*unlock)(Pool*);
void (*print)(Pool*, char*, ...);
void (*panic)(Pool*, char*, ...);
void (*logstack)(Pool*);
void* private;
};
extern void* poolalloc(Pool*, uint32_t);
extern void* poolallocalign(Pool*, uint32_t, uint32_t, int32_t, uint32_t);
extern void poolfree(Pool*, void*);
extern uint32_t poolmsize(Pool*, void*);
extern void* poolrealloc(Pool*, void*, uint32_t);
extern void poolcheck(Pool*);
extern int poolcompact(Pool*);
extern void poolblockcheck(Pool*, void*);
extern Pool* mainmem;
extern Pool* imagmem;
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,
};