/* * store_aufs.h * * Internal declarations for the aufs routines */#ifndef __ASYNC_IO_H__#define __ASYNC_IO_H__extern int n_asyncufs_dirs;extern int squidaio_nthreads;extern int squidaio_magic1;extern int squidaio_magic2;/* Base number of threads if not specified to configure. * Weighted by number of directories (see aiops.c) */#define THREAD_FACTOR 16/* Queue limit where swapouts are deferred (load calculation) */#define MAGIC1_FACTOR 10#define MAGIC1 squidaio_magic1/* Queue limit where swapins are deferred (open/create fails) */#define MAGIC2_FACTOR 20#define MAGIC2 squidaio_magic2struct _squidaio_result_t {    int aio_return;    int aio_errno;    void *_data;		/* Internal housekeeping */    void *data;			/* Available to the caller */};typedef struct _squidaio_result_t squidaio_result_t;typedef void AIOCB(int fd, void *cbdata, const char *buf, int aio_return, int aio_errno);void squidaio_init(void);void squidaio_shutdown(void);int squidaio_cancel(squidaio_result_t *);int squidaio_open(const char *, int, mode_t, squidaio_result_t *);int squidaio_read(int, char *, int, off_t, int, squidaio_result_t *);int squidaio_write(int, char *, int, off_t, int, squidaio_result_t *);int squidaio_close(int, squidaio_result_t *);int squidaio_stat(const char *, struct stat *, squidaio_result_t *);int squidaio_unlink(const char *, squidaio_result_t *);int squidaio_truncate(const char *, off_t length, squidaio_result_t *);int squidaio_opendir(const char *, squidaio_result_t *);squidaio_result_t *squidaio_poll_done(void);int squidaio_operations_pending(void);int squidaio_sync(void);int squidaio_get_queue_len(void);void *squidaio_xmalloc(int size);void squidaio_xfree(void *p, int size);void squidaio_stats(StoreEntry *);void aioInit(void);void aioDone(void);void aioCancel(int);void aioOpen(const char *, int, mode_t, AIOCB *, void *);void aioClose(int);void aioWrite(int, off_t offset, char *, int size, AIOCB *, void *, FREE *);void aioRead(int, off_t offset, int size, AIOCB *, void *);void aioStat(char *, struct stat *, AIOCB *, void *);void aioUnlink(const char *, AIOCB *, void *);void aioTruncate(const char *, off_t length, AIOCB *, void *);int aioCheckCallbacks(SwapDir *);void aioSync(SwapDir *);int aioQueueSize(void);#endif