db_deadlock.c
上传用户:romrleung
上传日期:2022-05-23
资源大小:18897k
文件大小:5k
- /*-
- * See the file LICENSE for redistribution information.
- *
- * Copyright (c) 1996-2002
- * Sleepycat Software. All rights reserved.
- */
- #include "db_config.h"
- #ifndef lint
- static const char copyright[] =
- "Copyright (c) 1996-2002nSleepycat Software Inc. All rights reserved.n";
- static const char revid[] =
- "$Id: db_deadlock.c,v 11.38 2002/08/08 03:50:32 bostic Exp $";
- #endif
- #ifndef NO_SYSTEM_INCLUDES
- #include <sys/types.h>
- #if TIME_WITH_SYS_TIME
- #include <sys/time.h>
- #include <time.h>
- #else
- #if HAVE_SYS_TIME_H
- #include <sys/time.h>
- #else
- #include <time.h>
- #endif
- #endif
- #include <limits.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <unistd.h>
- #endif
- #include "db_int.h"
- int main __P((int, char *[]));
- int usage __P((void));
- int version_check __P((const char *));
- int
- main(argc, argv)
- int argc;
- char *argv[];
- {
- extern char *optarg;
- extern int optind;
- const char *progname = "db_deadlock";
- DB_ENV *dbenv;
- u_int32_t atype;
- time_t now;
- long secs, usecs;
- int ch, e_close, exitval, ret, verbose;
- char *home, *logfile, *str;
- if ((ret = version_check(progname)) != 0)
- return (ret);
- atype = DB_LOCK_DEFAULT;
- home = logfile = NULL;
- secs = usecs = 0;
- e_close = exitval = verbose = 0;
- while ((ch = getopt(argc, argv, "a:h:L:t:Vvw")) != EOF)
- switch (ch) {
- case 'a':
- switch (optarg[0]) {
- case 'e':
- atype = DB_LOCK_EXPIRE;
- break;
- case 'm':
- atype = DB_LOCK_MAXLOCKS;
- break;
- case 'n':
- atype = DB_LOCK_MINLOCKS;
- break;
- case 'o':
- atype = DB_LOCK_OLDEST;
- break;
- case 'w':
- atype = DB_LOCK_MINWRITE;
- break;
- case 'y':
- atype = DB_LOCK_YOUNGEST;
- break;
- default:
- return (usage());
- /* NOTREACHED */
- }
- if (optarg[1] != ' ')
- return (usage());
- break;
- case 'h':
- home = optarg;
- break;
- case 'L':
- logfile = optarg;
- break;
- case 't':
- if ((str = strchr(optarg, '.')) != NULL) {
- *str++ = ' ';
- if (*str != ' ' && __db_getlong(
- NULL, progname, str, 0, LONG_MAX, &usecs))
- return (EXIT_FAILURE);
- }
- if (*optarg != ' ' && __db_getlong(
- NULL, progname, optarg, 0, LONG_MAX, &secs))
- return (EXIT_FAILURE);
- if (secs == 0 && usecs == 0)
- return (usage());
- break;
- case 'V':
- printf("%sn", db_version(NULL, NULL, NULL));
- return (EXIT_SUCCESS);
- case 'v':
- verbose = 1;
- break;
- case 'w': /* Undocumented. */
- /* Detect every 100ms (100000 us) when polling. */
- secs = 0;
- usecs = 100000;
- break;
- case '?':
- default:
- return (usage());
- }
- argc -= optind;
- argv += optind;
- if (argc != 0)
- return (usage());
- /* Handle possible interruptions. */
- __db_util_siginit();
- /* Log our process ID. */
- if (logfile != NULL && __db_util_logset(progname, logfile))
- goto shutdown;
- /*
- * 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 (verbose) {
- (void)dbenv->set_verbose(dbenv, DB_VERB_DEADLOCK, 1);
- (void)dbenv->set_verbose(dbenv, DB_VERB_WAITSFOR, 1);
- }
- /* An environment is required. */
- if ((ret = dbenv->open(dbenv, home,
- DB_JOINENV | DB_USE_ENVIRON, 0)) != 0) {
- dbenv->err(dbenv, ret, "open");
- goto shutdown;
- }
- while (!__db_util_interrupted()) {
- if (verbose) {
- (void)time(&now);
- dbenv->errx(dbenv, "running at %.24s", ctime(&now));
- }
- if ((ret = dbenv->lock_detect(dbenv, 0, atype, NULL)) != 0) {
- dbenv->err(dbenv, ret, "DB_ENV->lock_detect");
- goto shutdown;
- }
- /* Make a pass every "secs" secs and "usecs" usecs. */
- if (secs == 0 && usecs == 0)
- break;
- (void)__os_sleep(dbenv, secs, usecs);
- }
- if (0) {
- shutdown: exitval = 1;
- }
- /* Clean up the logfile. */
- if (logfile != NULL)
- remove(logfile);
- /* Clean up the environment. */
- 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 == 0 ? EXIT_SUCCESS : EXIT_FAILURE);
- }
- int
- usage()
- {
- (void)fprintf(stderr, "%snt%sn",
- "usage: db_deadlock [-Vv]",
- "[-a e | m | n | o | w | y] [-h home] [-L file] [-t sec.usec]");
- return (EXIT_FAILURE);
- }
- int
- version_check(progname)
- const char *progname;
- {
- 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);
- return (EXIT_FAILURE);
- }
- return (0);
- }