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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 "wtperf.h"
static int
check_timing(CONFIG *cfg,
const char *name, struct timespec start, struct timespec *stop)
{
uint64_t last_interval;
int ret;
if ((ret = __wt_epoch(NULL, stop)) != 0) {
lprintf(cfg, ret, 0,
"Get time failed in cycle_idle_tables.");
cfg->error = ret;
return (ret);
}
last_interval = (uint64_t)(WT_TIMEDIFF_SEC(*stop, start));
if (last_interval > cfg->idle_table_cycle) {
lprintf(cfg, ret, 0,
"Cycling idle table failed because %s took %" PRIu64
" seconds which is longer than configured acceptable"
" maximum of %" PRIu32 ".",
name, last_interval, cfg->idle_table_cycle);
cfg->error = ETIMEDOUT;
return (ETIMEDOUT);
}
return (0);
}
/*
* Regularly create, open a cursor and drop a table.
* Measure how long each step takes, and flag an error if it exceeds the
* configured maximum.
*/
static void *
cycle_idle_tables(void *arg)
{
struct timespec start, stop;
CONFIG *cfg;
WT_SESSION *session;
WT_CURSOR *cursor;
int cycle_count, ret;
char uri[512];
cfg = (CONFIG *)arg;
cycle_count = 0;
if ((ret = cfg->conn->open_session(
cfg->conn, NULL, cfg->sess_config, &session)) != 0) {
lprintf(cfg, ret, 0,
"Error opening a session on %s", cfg->home);
return (NULL);
}
for (cycle_count = 0; cfg->idle_cycle_run; ++cycle_count) {
snprintf(uri, 512, "%s_cycle%07d", cfg->uris[0], cycle_count);
/* Don't busy cycle in this loop. */
__wt_sleep(1, 0);
/* Setup a start timer. */
if ((ret = __wt_epoch(NULL, &start)) != 0) {
lprintf(cfg, ret, 0,
"Get time failed in cycle_idle_tables.");
cfg->error = ret;
return (NULL);
}
/* Create a table. */
if ((ret = session->create(
session, uri, cfg->table_config)) != 0) {
if (ret == EBUSY)
continue;
lprintf(cfg, ret, 0,
"Table create failed in cycle_idle_tables.");
cfg->error = ret;
return (NULL);
}
if (check_timing(cfg, "create", start, &stop) != 0)
return (NULL);
start = stop;
/* Open and close cursor. */
if ((ret = session->open_cursor(
session, uri, NULL, NULL, &cursor)) != 0) {
lprintf(cfg, ret, 0,
"Cursor open failed in cycle_idle_tables.");
cfg->error = ret;
return (NULL);
}
if ((ret = cursor->close(cursor)) != 0) {
lprintf(cfg, ret, 0,
"Cursor close failed in cycle_idle_tables.");
cfg->error = ret;
return (NULL);
}
if (check_timing(cfg, "cursor", start, &stop) != 0)
return (NULL);
start = stop;
/*
* Drop the table. Keep retrying on EBUSY failure - it is an
* expected return when checkpoints are happening.
*/
while ((ret = session->drop(session, uri, "force")) == EBUSY)
__wt_sleep(1, 0);
if (ret != 0 && ret != EBUSY) {
lprintf(cfg, ret, 0,
"Table drop failed in cycle_idle_tables.");
cfg->error = ret;
return (NULL);
}
if (check_timing(cfg, "drop", start, &stop) != 0)
return (NULL);
}
return (NULL);
}
/*
* Start a thread the creates and drops tables regularly.
* TODO: Currently accepts a pthread_t as a parameter, since it is not
* possible to portably statically initialize it in the global configuration
* structure. Should reshuffle the configuration structure so explicit static
* initialization isn't necessary.
*/
int
start_idle_table_cycle(CONFIG *cfg, pthread_t *idle_table_cycle_thread)
{
pthread_t thread_id;
int ret;
if (cfg->idle_table_cycle == 0)
return (0);
cfg->idle_cycle_run = true;
if ((ret = pthread_create(
&thread_id, NULL, cycle_idle_tables, cfg)) != 0) {
lprintf(
cfg, ret, 0, "Error creating idle table cycle thread.");
cfg->idle_cycle_run = false;
return (ret);
}
*idle_table_cycle_thread = thread_id;
return (0);
}
int
stop_idle_table_cycle(CONFIG *cfg, pthread_t idle_table_cycle_thread)
{
int ret;
if (cfg->idle_table_cycle == 0 || !cfg->idle_cycle_run)
return (0);
cfg->idle_cycle_run = false;
if ((ret = pthread_join(idle_table_cycle_thread, NULL)) != 0) {
lprintf(
cfg, ret, 0, "Error joining idle table cycle thread.");
return (ret);
}
return (0);
}
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