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/*-
* Public Domain 2014-2016 MongoDB, Inc.
* Public Domain 2008-2014 WiredTiger, Inc.
*
* This is free and unencumbered software released into the public domain.
*
* Anyone is free to copy, modify, publish, use, compile, sell, or
* distribute this software, either in source code form or as a compiled
* binary, for any purpose, commercial or non-commercial, and by any
* means.
*
* In jurisdictions that recognize copyright laws, the author or authors
* of this software dedicate any and all copyright interest in the
* software to the public domain. We make this dedication for the benefit
* of the public at large and to the detriment of our heirs and
* successors. We intend this dedication to be an overt act of
* relinquishment in perpetuity of all present and future rights to this
* software under copyright law.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#include "test_util.h"
#define HOME_SIZE 512
#define HOME_BASE "WT_TEST"
static char home[HOME_SIZE]; /* Base home directory */
static char hometmp[HOME_SIZE]; /* Each conn home directory */
static const char * const uri = "table:main";
#define WTOPEN_CFG_COMMON \
"create,log=(file_max=10M,archive=false,enabled)," \
"statistics=(fast),statistics_log=(wait=5),"
#define WT_CONFIG0 \
WTOPEN_CFG_COMMON \
"transaction_sync=(enabled=false)"
#define WT_CONFIG1 \
WTOPEN_CFG_COMMON \
"transaction_sync=(enabled,method=none)"
#define WT_CONFIG2 \
WTOPEN_CFG_COMMON \
"transaction_sync=(enabled,method=fsync)"
#define MAX_DBS 10
#define MAX_IDLE_TIME 30
#define IDLE_INCR 5
#define MAX_KV 100
#define MAX_VAL 128
static void usage(void)
WT_GCC_FUNC_DECL_ATTRIBUTE((noreturn));
static void
usage(void)
{
fprintf(stderr,
"usage: %s [-I] [-D maxdbs] [-h dir]\n", progname);
exit(EXIT_FAILURE);
}
extern int __wt_optind;
extern char *__wt_optarg;
static WT_CONNECTION **connections = NULL;
static WT_CURSOR **cursors = NULL;
static WT_RAND_STATE rnd;
static WT_SESSION **sessions = NULL;
static int
get_stat(WT_SESSION *stat_session, int stat_field, uint64_t *valuep)
{
WT_CURSOR *statc;
const char *desc, *pvalue;
int ret;
testutil_check(stat_session->open_cursor(stat_session,
"statistics:", NULL, NULL, &statc));
statc->set_key(statc, stat_field);
if ((ret = statc->search(statc)) != 0)
return (ret);
ret = statc->get_value(statc, &desc, &pvalue, valuep);
testutil_check(statc->close(statc));
return (ret);
}
static void
run_ops(int dbs)
{
WT_ITEM data;
int db_set, i, key;
uint32_t db;
uint8_t buf[MAX_VAL];
memset(buf, 0, sizeof(buf));
for (i = 0; i < MAX_VAL; ++i)
buf[i] = (uint8_t)__wt_random(&rnd);
data.data = buf;
/*
* Write a small amount of data into a random subset of the databases.
*/
db_set = dbs / 4;
for (i = 0; i < db_set; ++i) {
db = __wt_random(&rnd) % (uint32_t)dbs;
printf("Write to database %" PRIu32 "\n", db);
for (key = 0; key < MAX_KV; ++key) {
data.size = __wt_random(&rnd) % MAX_VAL;
cursors[db]->set_key(cursors[db], key);
cursors[db]->set_value(cursors[db], &data);
testutil_check(cursors[db]->insert(cursors[db]));
}
}
}
int
main(int argc, char *argv[])
{
uint64_t cond_reset, cond_wait;
uint64_t *cond_reset_orig;
int cfg, ch, dbs, i;
bool idle;
const char *working_dir, *wt_cfg;
char cmd[128];
(void)testutil_set_progname(argv);
dbs = MAX_DBS;
working_dir = HOME_BASE;
idle = false;
while ((ch = __wt_getopt(progname, argc, argv, "D:h:I")) != EOF)
switch (ch) {
case 'D':
dbs = atoi(__wt_optarg);
break;
case 'h':
working_dir = __wt_optarg;
break;
case 'I':
idle = true;
break;
default:
usage();
}
argc -= __wt_optind;
argv += __wt_optind;
if (argc != 0)
usage();
/*
* Allocate arrays for connection handles, sessions, statistics
* cursors and, if needed, data cursors.
*/
connections = dcalloc((size_t)dbs, sizeof(WT_CONNECTION *));
sessions = dcalloc((size_t)dbs, sizeof(WT_SESSION *));
cond_reset_orig = dcalloc((size_t)dbs, sizeof(uint64_t));
cursors = idle ? NULL : dcalloc((size_t)dbs, sizeof(WT_CURSOR *));
memset(cmd, 0, sizeof(cmd));
/*
* Set up all the directory names.
*/
testutil_work_dir_from_path(home, HOME_SIZE, working_dir);
testutil_make_work_dir(home);
__wt_random_init(&rnd);
for (i = 0; i < dbs; ++i) {
testutil_check(__wt_snprintf(
hometmp, HOME_SIZE, "%s/%s.%d", home, HOME_BASE, i));
testutil_make_work_dir(hometmp);
/*
* Open each database. Rotate different configurations
* among them. Open a session and statistics cursor.
* If writing data, create the table and open a data cursor.
*/
cfg = i % 3;
if (cfg == 0)
wt_cfg = WT_CONFIG0;
else if (cfg == 1)
wt_cfg = WT_CONFIG1;
else
wt_cfg = WT_CONFIG2;
testutil_check(wiredtiger_open(
hometmp, NULL, wt_cfg, &connections[i]));
testutil_check(connections[i]->open_session(connections[i],
NULL, NULL, &sessions[i]));
if (!idle) {
testutil_check(sessions[i]->create(sessions[i],
uri, "key_format=Q,value_format=u"));
testutil_check(sessions[i]->open_cursor(sessions[i],
uri, NULL, NULL, &cursors[i]));
}
}
sleep(10);
/*
* Record original reset setting. There could have been some
* activity during the creation period.
*/
for (i = 0; i < dbs; ++i)
testutil_check(get_stat(sessions[i],
WT_STAT_CONN_COND_AUTO_WAIT_RESET, &cond_reset_orig[i]));
for (i = 0; i < MAX_IDLE_TIME; i += IDLE_INCR) {
if (!idle)
run_ops(dbs);
printf("Sleep %d (%d of %d)\n", IDLE_INCR, i, MAX_IDLE_TIME);
sleep(IDLE_INCR);
}
for (i = 0; i < dbs; ++i) {
testutil_check(get_stat(sessions[i],
WT_STAT_CONN_COND_AUTO_WAIT_RESET, &cond_reset));
testutil_check(get_stat(sessions[i],
WT_STAT_CONN_COND_AUTO_WAIT, &cond_wait));
/*
* On an idle workload there should be no resets of condition
* variables during the idle period. Even with a light
* workload, resets should not be very common. We look for 5%.
*/
if (idle && cond_reset != cond_reset_orig[i])
testutil_die(ERANGE,
"condition reset on idle connection %d of %" PRIu64,
i, cond_reset);
if (!idle && cond_reset > cond_wait / 20)
testutil_die(ERANGE, "connection %d condition reset %"
PRIu64 " exceeds 5%% of %" PRIu64,
i, cond_reset, cond_wait);
testutil_check(connections[i]->close(connections[i], NULL));
}
/* Cleanup allocated memory. */
free(connections);
free(sessions);
free(cond_reset_orig);
free(cursors);
return (EXIT_SUCCESS);
}
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