cxx_mpool.cpp
上传用户:tsgydb
上传日期:2007-04-14
资源大小:10674k
文件大小:4k
- /*-
- * See the file LICENSE for redistribution information.
- *
- * Copyright (c) 1997, 1998, 1999, 2000
- * Sleepycat Software. All rights reserved.
- */
- #include "db_config.h"
- #ifndef lint
- static const char revid[] = "$Id: cxx_mpool.cpp,v 11.11 2000/09/21 15:05:45 dda Exp $";
- #endif /* not lint */
- #include <errno.h>
- #include "db_cxx.h"
- #include "cxx_int.h"
- ////////////////////////////////////////////////////////////////////////
- // //
- // DbMpoolFile //
- // //
- ////////////////////////////////////////////////////////////////////////
- DbMpoolFile::DbMpoolFile()
- : imp_(0)
- {
- }
- DbMpoolFile::~DbMpoolFile()
- {
- }
- int DbMpoolFile::open(DbEnv *envp, const char *file,
- u_int32_t flags, int mode, size_t pagesize,
- DB_MPOOL_FINFO *finfop, DbMpoolFile **result)
- {
- int err;
- DB_MPOOLFILE *mpf;
- DB_ENV *env = unwrap(envp);
- if ((err = ::memp_fopen(env, file, flags, mode, pagesize,
- finfop, &mpf)) != 0) {
- DB_ERROR("DbMpoolFile::open", err, envp->error_policy());
- return (err);
- }
- *result = new DbMpoolFile();
- (*result)->imp_ = wrap(mpf);
- return (0);
- }
- int DbMpoolFile::close()
- {
- DB_MPOOLFILE *mpf = unwrap(this);
- int err = 0;
- if (!mpf) {
- err = EINVAL;
- }
- else if ((err = ::memp_fclose(mpf)) != 0) {
- DB_ERROR("DbMpoolFile::close", err, ON_ERROR_UNKNOWN);
- return (err);
- }
- imp_ = 0; // extra safety
- // This may seem weird, but is legal as long as we don't access
- // any data before returning.
- //
- delete this;
- return (0);
- }
- int DbMpoolFile::get(db_pgno_t *pgnoaddr, u_int32_t flags, void *pagep)
- {
- DB_MPOOLFILE *mpf = unwrap(this);
- int err = 0;
- if (!mpf) {
- err = EINVAL;
- }
- else if ((err = ::memp_fget(mpf, pgnoaddr, flags, pagep)) != 0) {
- DB_ERROR("DbMpoolFile::get", err, ON_ERROR_UNKNOWN);
- }
- return (err);
- }
- int DbMpoolFile::put(void *pgaddr, u_int32_t flags)
- {
- DB_MPOOLFILE *mpf = unwrap(this);
- int err = 0;
- if (!mpf) {
- err = EINVAL;
- }
- else if ((err = ::memp_fput(mpf, pgaddr, flags)) != 0) {
- DB_ERROR("DbMpoolFile::put", err, ON_ERROR_UNKNOWN);
- }
- return (err);
- }
- int DbMpoolFile::set(void *pgaddr, u_int32_t flags)
- {
- DB_MPOOLFILE *mpf = unwrap(this);
- int err = 0;
- if (!mpf) {
- err = EINVAL;
- }
- else if ((err = ::memp_fset(mpf, pgaddr, flags)) != 0) {
- DB_ERROR("DbMpoolFile::set", err, ON_ERROR_UNKNOWN);
- }
- return (err);
- }
- int DbMpoolFile::sync()
- {
- DB_MPOOLFILE *mpf = unwrap(this);
- int err = 0;
- if (!mpf) {
- err = EINVAL;
- }
- else if ((err = ::memp_fsync(mpf)) != 0 && err != DB_INCOMPLETE) {
- DB_ERROR("DbMpoolFile::sync", err, ON_ERROR_UNKNOWN);
- }
- return (err);
- }
- ////////////////////////////////////////////////////////////////////////
- // //
- // DbMpool //
- // //
- ////////////////////////////////////////////////////////////////////////
- int DbEnv::memp_register(int ftype,
- pgin_fcn_type pgin_fcn,
- pgout_fcn_type pgout_fcn)
- {
- DB_ENV *env = unwrap(this);
- int err = 0;
- if ((err = ::memp_register(env, ftype, pgin_fcn, pgout_fcn)) != 0) {
- DB_ERROR("DbEnv::memp_register", err, error_policy());
- return (err);
- }
- return (err);
- }
- int DbEnv::memp_stat(DB_MPOOL_STAT **gsp, DB_MPOOL_FSTAT ***fsp,
- db_malloc_fcn_type db_malloc_fcn)
- {
- DB_ENV *env = unwrap(this);
- int err = 0;
- if ((err = ::memp_stat(env, gsp, fsp, db_malloc_fcn)) != 0) {
- DB_ERROR("DbEnv::memp_stat", err, error_policy());
- return (err);
- }
- return (err);
- }
- int DbEnv::memp_sync(DbLsn *sn)
- {
- DB_ENV *env = unwrap(this);
- int err = 0;
- if ((err = ::memp_sync(env, sn)) != 0 && err != DB_INCOMPLETE) {
- DB_ERROR("DbEnv::memp_sync", err, error_policy());
- return (err);
- }
- return (err);
- }
- int DbEnv::memp_trickle(int pct, int *nwrotep)
- {
- DB_ENV *env = unwrap(this);
- int err = 0;
- if ((err = ::memp_trickle(env, pct, nwrotep)) != 0) {
- DB_ERROR("DbEnv::memp_trickle", err, error_policy());
- return (err);
- }
- return (err);
- }