mp_cmpr.c File Reference

#include "config.h"
#include <sys/types.h>
#include <string.h>
#include <errno.h>
#include "db_int.h"
#include "db_page.h"
#include "shqueue.h"
#include "db_shash.h"
#include "mp.h"
#include "common_ext.h"
#include "zlib.h"

Go to the source code of this file.

Classes

struct _cmprmeta

Defines

#define CMPR_DIVIDE(n) ((n) >> (dbenv->mp_cmpr_info->coefficient))

#define CMPR_MAX (dbenv->mp_cmpr_info->max_npages)

#define CMPR_META_COMPRESSED 0x02

#define CMPR_META_NORMAL 0x01

#define CMPR_MULTIPLY(n) ((n) << (dbenv->mp_cmpr_info->coefficient))

Typedefs

typedef struct _cmprmeta CMPRMETA

Functions

static int __memp_cmpr_info_valid (DB_ENV *dbenv, DB_CMPR_INFO *cmpr_info)

static int __memp_cmpr_page (DB_MPOOLFILE *dbmfp, CMPR *cmpr, DB_IO *db_io, ssize_t *niop)

static int __memp_cmpr_page __P ((DB_MPOOLFILE *, CMPR *, DB_IO *, ssize_t *))

int CDB___memp_cmpr (DB_MPOOLFILE *dbmfp, BH *bhp, DB_IO *db_io, int flag, ssize_t *niop)

int CDB___memp_cmpr_alloc (DB_MPOOLFILE *dbmfp, db_pgno_t *pgnop, size_t pagesize, BH *bhp, int *first_nonreused_chain_posp)

int CDB___memp_cmpr_alloc_chain (DB_MPOOL *dbmp, BH *bhp, int alloc_type)

int CDB___memp_cmpr_close (DB_ENV *dbenv, DB_MPOOLFILE *dbmfp)

u_int8_t CDB___memp_cmpr_coefficient (DB_ENV *dbenv)

int CDB___memp_cmpr_create (DB_ENV *dbenv, DB_FH *fhp, size_t pgsize, int flags)

int CDB___memp_cmpr_deflate (DB_ENV *dbenv, const u_int8_t *inbuff, int inbuff_length, u_int8_t **outbuffp, int *outbuff_lengthp, void *user_data)

int CDB___memp_cmpr_free (DB_MPOOLFILE *dbmfp, db_pgno_t pgno, size_t pagesize)

int CDB___memp_cmpr_free_chain (DB_MPOOL *dbmp, BH *bhp)

int CDB___memp_cmpr_inflate (DB_ENV *dbenv, const u_int8_t *inbuff, int inbuff_length, u_int8_t *outbuff, int outbuff_length, void *user_data)

int CDB___memp_cmpr_open (DB_ENV *dbenv, MPOOLFILE *mfp, const char *path)

int CDB___memp_cmpr_read (DB_MPOOLFILE *dbmfp, BH *bhp, DB_IO *db_io, ssize_t *niop)

int CDB___memp_cmpr_read_meta (DB_ENV *dbenv, DB_FH *fhp, void *buff, size_t buff_length, ssize_t *nrp)

int CDB___memp_cmpr_write (DB_MPOOLFILE *dbmfp, BH *bhp, DB_IO *db_io, ssize_t *niop)

Variables

static DB_CMPR_INFO default_cmpr_info

static const char sccsid [] = "@(#)mp_cmpr.c 1.1 (Senga) 01/08/99"

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