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/*-
* 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) 1996-2000\nSleepycat Software Inc. All rights reserved.\n";
static const char revid[] =
"$Id: db_deadlock.c,v 11.19 2001/01/18 18:36:57 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 <unistd.h>
#endif
#include "db_int.h"
#include "clib_ext.h"
int main __P((int, char *[]));
void usage __P((void));
void version_check __P((void));
DB_ENV *dbenv;
const char
*progname = "db_deadlock"; /* Program name. */
int
main(argc, argv)
int argc;
char *argv[];
{
extern char *optarg;
extern int optind;
u_int32_t atype;
time_t now;
long usecs;
u_int32_t flags;
int ch, e_close, exitval, ret, verbose;
char *home, *logfile;
version_check();
atype = DB_LOCK_DEFAULT;
home = logfile = NULL;
usecs = 0;
flags = 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 'o':
atype = DB_LOCK_OLDEST;
break;
case 'y':
atype = DB_LOCK_YOUNGEST;
break;
default:
usage();
/* NOTREACHED */
}
if (optarg[1] != '\0')
usage();
break;
case 'h':
home = optarg;
break;
case 'L':
logfile = optarg;
break;
case 't':
(void)__db_getlong(NULL,
progname, optarg, 1, LONG_MAX, &usecs);
usecs *= 1000000;
break;
case 'V':
printf("%s\n", db_version(NULL, NULL, NULL));
exit(0);
case 'v':
verbose = 1;
break;
case 'w':
LF_SET(DB_LOCK_CONFLICT);
break;
case '?':
default:
usage();
}
argc -= optind;
argv += optind;
if (argc != 0)
usage();
if (usecs == 0 && !LF_ISSET(DB_LOCK_CONFLICT)) {
fprintf(stderr,
"%s: at least one of -t and -w must be specified\n",
progname);
exit(1);
}
/*
* We detect every 100ms (100000 us) when we're running in
* DB_LOCK_CONFLICT mode.
*/
if (usecs == 0)
usecs = 100000;
/* 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: %s\n", 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 = lock_detect(dbenv, flags, atype, NULL)) != 0) {
dbenv->err(dbenv, ret, "lock_detect");
goto shutdown;
}
/* Make a pass every "usecs" usecs. */
(void)__os_sleep(dbenv, 0, 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: %s\n", progname, db_strerror(ret));
}
/* Resend any caught signal. */
__db_util_sigresend();
return (exitval);
}
void
usage()
{
(void)fprintf(stderr,
"usage: db_deadlock [-Vvw] [-a o | y] [-h home] [-L file] [-t sec]\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.%d\n",
progname, DB_VERSION_MAJOR, DB_VERSION_MINOR,
DB_VERSION_PATCH, v_major, v_minor, v_patch);
exit (1);
}
}
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