db_printlog.c
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) 1996, 1997, 1998, 1999, 2000
- * Sleepycat Software. All rights reserved.
- */
- #include "db_config.h"
- #ifndef lint
- static const char copyright[] =
- "Copyright (c) 1996-2000nSleepycat Software Inc. All rights reserved.n";
- static const char revid[] =
- "$Id: db_printlog.c,v 11.23 2001/01/18 18:36:58 bostic Exp $";
- #endif
- #ifndef NO_SYSTEM_INCLUDES
- #include <sys/types.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <unistd.h>
- #endif
- #include "db_int.h"
- #include "db_page.h"
- #include "btree.h"
- #include "db_am.h"
- #include "hash.h"
- #include "log.h"
- #include "qam.h"
- #include "txn.h"
- int main __P((int, char *[]));
- void usage __P((void));
- void version_check __P((void));
- DB_ENV *dbenv;
- const char
- *progname = "db_printlog"; /* Program name. */
- int
- main(argc, argv)
- int argc;
- char *argv[];
- {
- extern char *optarg;
- extern int optind;
- DBT data;
- DB_LSN key;
- int ch, e_close, exitval, nflag, ret;
- char *home;
- version_check();
- e_close = exitval = 0;
- nflag = 0;
- home = NULL;
- while ((ch = getopt(argc, argv, "h:NV")) != EOF)
- switch (ch) {
- case 'h':
- home = optarg;
- break;
- case 'N':
- nflag = 1;
- if ((ret = db_env_set_panicstate(0)) != 0) {
- fprintf(stderr,
- "%s: db_env_set_panicstate: %sn",
- progname, db_strerror(ret));
- return (1);
- }
- break;
- case 'V':
- printf("%sn", db_version(NULL, NULL, NULL));
- exit(0);
- case '?':
- default:
- usage();
- }
- argc -= optind;
- argv += optind;
- if (argc > 0)
- usage();
- /* Handle possible interruptions. */
- __db_util_siginit();
- /*
- * Create an environment object and initialize it for error
- * reporting.
- */
- if ((ret = db_env_create(&dbenv, 0)) != 0) {
- fprintf(stderr,
- "%s: db_env_create: %sn", progname, db_strerror(ret));
- goto shutdown;
- }
- e_close = 1;
- dbenv->set_errfile(dbenv, stderr);
- dbenv->set_errpfx(dbenv, progname);
- if (nflag && (ret = dbenv->set_mutexlocks(dbenv, 0)) != 0) {
- dbenv->err(dbenv, ret, "set_mutexlocks");
- goto shutdown;
- }
- /*
- * An environment is required, but as all we're doing is reading log
- * files, we create one if it doesn't already exist. If we create
- * it, create it private so it automatically goes away when we're done.
- */
- if ((ret = dbenv->open(dbenv, home,
- DB_JOINENV | DB_USE_ENVIRON, 0)) != 0 &&
- (ret = dbenv->open(dbenv, home,
- DB_CREATE | DB_INIT_LOG | DB_PRIVATE | DB_USE_ENVIRON, 0)) != 0) {
- dbenv->err(dbenv, ret, "open");
- goto shutdown;
- }
- /* Initialize print callbacks. */
- if ((ret = __bam_init_print(dbenv)) != 0 ||
- (ret = __crdel_init_print(dbenv)) != 0 ||
- (ret = __db_init_print(dbenv)) != 0 ||
- (ret = __qam_init_print(dbenv)) != 0 ||
- (ret = __ham_init_print(dbenv)) != 0 ||
- (ret = __log_init_print(dbenv)) != 0 ||
- (ret = __txn_init_print(dbenv)) != 0) {
- dbenv->err(dbenv, ret, "callback: initialization");
- goto shutdown;
- }
- memset(&data, 0, sizeof(data));
- while (!__db_util_interrupted()) {
- if ((ret = log_get(dbenv, &key, &data, DB_NEXT)) != 0) {
- if (ret == DB_NOTFOUND)
- break;
- dbenv->err(dbenv, ret, "log_get");
- goto shutdown;
- }
- /*
- * XXX
- * We use DB_TXN_ABORT as our op because that's the only op
- * that calls the underlying recovery function without any
- * consideration as to the contents of the transaction list.
- */
- ret = __db_dispatch(dbenv, &data, &key, DB_TXN_ABORT, NULL);
- /*
- * XXX
- * Just in case the underlying routines don't flush.
- */
- (void)fflush(stdout);
- if (ret != 0) {
- dbenv->err(dbenv, ret, "tx: dispatch");
- goto shutdown;
- }
- }
- if (0) {
- shutdown: exitval = 1;
- }
- if (e_close && (ret = dbenv->close(dbenv, 0)) != 0) {
- exitval = 1;
- fprintf(stderr,
- "%s: dbenv->close: %sn", progname, db_strerror(ret));
- }
- /* Resend any caught signal. */
- __db_util_sigresend();
- return (exitval);
- }
- void
- usage()
- {
- fprintf(stderr, "usage: db_printlog [-NV] [-h home]n");
- exit (1);
- }
- void
- version_check()
- {
- int v_major, v_minor, v_patch;
- /* Make sure we're loaded with the right version of the DB library. */
- (void)db_version(&v_major, &v_minor, &v_patch);
- if (v_major != DB_VERSION_MAJOR ||
- v_minor != DB_VERSION_MINOR || v_patch != DB_VERSION_PATCH) {
- fprintf(stderr,
- "%s: version %d.%d.%d doesn't match library version %d.%d.%dn",
- progname, DB_VERSION_MAJOR, DB_VERSION_MINOR,
- DB_VERSION_PATCH, v_major, v_minor, v_patch);
- exit (1);
- }
- }