log_method.c
上传用户:tsgydb
上传日期:2007-04-14
资源大小:10674k
文件大小:2k
- /*-
- * See the file LICENSE for redistribution information.
- *
- * Copyright (c) 1999, 2000
- * Sleepycat Software. All rights reserved.
- */
- #include "db_config.h"
- #ifndef lint
- static const char revid[] = "$Id: log_method.c,v 11.14 2000/11/30 00:58:40 ubell Exp $";
- #endif /* not lint */
- #ifndef NO_SYSTEM_INCLUDES
- #include <sys/types.h>
- #include <stdlib.h>
- #include <string.h>
- #include <unistd.h>
- #endif
- #ifdef HAVE_RPC
- #include "db_server.h"
- #endif
- #include "db_int.h"
- #include "log.h"
- #ifdef HAVE_RPC
- #include "gen_client_ext.h"
- #include "rpc_client_ext.h"
- #endif
- static int __log_set_lg_max __P((DB_ENV *, u_int32_t));
- static int __log_set_lg_bsize __P((DB_ENV *, u_int32_t));
- static int __log_set_lg_dir __P((DB_ENV *, const char *));
- /*
- * __log_dbenv_create --
- * Log specific initialization of the DB_ENV structure.
- *
- * PUBLIC: void __log_dbenv_create __P((DB_ENV *));
- */
- void
- __log_dbenv_create(dbenv)
- DB_ENV *dbenv;
- {
- dbenv->lg_bsize = LG_BSIZE_DEFAULT;
- dbenv->set_lg_bsize = __log_set_lg_bsize;
- dbenv->lg_max = LG_MAX_DEFAULT;
- dbenv->set_lg_max = __log_set_lg_max;
- dbenv->set_lg_dir = __log_set_lg_dir;
- #ifdef HAVE_RPC
- /*
- * If we have a client, overwrite what we just setup to
- * point to client functions.
- */
- if (F_ISSET(dbenv, DB_ENV_RPCCLIENT)) {
- dbenv->set_lg_bsize = __dbcl_set_lg_bsize;
- dbenv->set_lg_max = __dbcl_set_lg_max;
- dbenv->set_lg_dir = __dbcl_set_lg_dir;
- }
- #endif
- }
- /*
- * __log_set_lg_bsize --
- * Set the log buffer size.
- */
- static int
- __log_set_lg_bsize(dbenv, lg_bsize)
- DB_ENV *dbenv;
- u_int32_t lg_bsize;
- {
- ENV_ILLEGAL_AFTER_OPEN(dbenv, "set_lg_bsize");
- /* Let's not be silly. */
- if (lg_bsize > dbenv->lg_max / 4) {
- __db_err(dbenv, "log buffer size must be <= log file size / 4");
- return (EINVAL);
- }
- dbenv->lg_bsize = lg_bsize;
- return (0);
- }
- /*
- * __log_set_lg_max --
- * Set the maximum log file size.
- */
- static int
- __log_set_lg_max(dbenv, lg_max)
- DB_ENV *dbenv;
- u_int32_t lg_max;
- {
- ENV_ILLEGAL_AFTER_OPEN(dbenv, "set_lg_max");
- /* Let's not be silly. */
- if (lg_max < dbenv->lg_bsize * 4) {
- __db_err(dbenv, "log file size must be >= log buffer size * 4");
- return (EINVAL);
- }
- dbenv->lg_max = lg_max;
- return (0);
- }
- /*
- * __log_set_lg_dir --
- * Set the log file directory.
- */
- static int
- __log_set_lg_dir(dbenv, dir)
- DB_ENV *dbenv;
- const char *dir;
- {
- if (dbenv->db_log_dir != NULL)
- __os_freestr(dbenv->db_log_dir);
- return (__os_strdup(dbenv, dir, &dbenv->db_log_dir));
- }