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/* Copyright (C) 2004 MySQL AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#ifdef _WIN32
# include "sb_win.h"
#endif
#ifdef HAVE_PTHREAD_H
# include <pthread.h>
#endif
#include "sysbench.h"
/* How to test scheduler pthread_yield or sched_yield */
#ifdef HAVE_PTHREAD_YIELD
#define YIELD pthread_yield
#elif defined (_WIN32)
#define YIELD SwitchToThread
#else
#define YIELD sched_yield
#endif
/* Threads test arguments */
static sb_arg_t threads_args[] =
{
{
"thread-yields", "number of yields to do per request", SB_ARG_TYPE_INT,
"1000"
},
{"thread-locks", "number of locks per thread", SB_ARG_TYPE_INT, "8"},
{NULL, NULL, SB_ARG_TYPE_NULL, NULL}
};
/* Threads test operations */
static int threads_init(void);
static int threads_prepare(void);
static void threads_print_mode(void);
static sb_request_t threads_get_request(int tid);
static int threads_execute_request(sb_request_t *, int);
static int threads_cleanup(void);
static sb_test_t threads_test =
{
"threads",
"Threads subsystem performance test",
{
threads_init,
threads_prepare,
NULL,
threads_print_mode,
threads_get_request,
threads_execute_request,
NULL,
NULL,
threads_cleanup,
NULL
},
{
NULL,
NULL,
NULL,
NULL
},
threads_args,
{NULL, NULL}
};
static unsigned int thread_yields;
static unsigned int thread_locks;
static pthread_mutex_t *test_mutexes;
static unsigned int req_performed;
int register_test_threads(sb_list_t *tests)
{
SB_LIST_ADD_TAIL(&threads_test.listitem, tests);
return 0;
}
int threads_init(void)
{
thread_yields = sb_get_value_int("thread-yields");
thread_locks = sb_get_value_int("thread-locks");
req_performed = 0;
return 0;
}
int threads_prepare(void)
{
unsigned int i;
test_mutexes = (pthread_mutex_t *)malloc(thread_locks *
sizeof(pthread_mutex_t));
if (test_mutexes == NULL)
{
log_text(LOG_FATAL, "Memory allocation failure!");
return 1;
}
for(i = 0; i < thread_locks; i++)
pthread_mutex_init(test_mutexes + i, NULL);
return 0;
}
int threads_cleanup(void)
{
unsigned int i;
for(i=0; i < thread_locks; i++)
pthread_mutex_destroy(test_mutexes + i);
free(test_mutexes);
return 0;
}
sb_request_t threads_get_request(int tid)
{
sb_request_t sb_req;
sb_threads_request_t *threads_req = &sb_req.u.threads_request;
(void)tid; /* unused */
SB_THREAD_MUTEX_LOCK();
if (req_performed >= sb_globals.max_requests)
{
sb_req.type = SB_REQ_TYPE_NULL;
SB_THREAD_MUTEX_UNLOCK();
return sb_req;
}
sb_req.type = SB_REQ_TYPE_THREADS;
threads_req->lock_num = req_performed % thread_locks;
req_performed++;
SB_THREAD_MUTEX_UNLOCK();
return sb_req;
}
int threads_execute_request(sb_request_t *sb_req, int thread_id)
{
unsigned int i;
sb_threads_request_t *threads_req = &sb_req->u.threads_request;
log_msg_t msg;
log_msg_oper_t op_msg;
/* Prepare log message */
msg.type = LOG_MSG_TYPE_OPER;
msg.data = &op_msg;
LOG_EVENT_START(msg, thread_id);
for(i = 0; i < thread_yields; i++)
{
pthread_mutex_lock(&test_mutexes[threads_req->lock_num]);
YIELD();
pthread_mutex_unlock(&test_mutexes[threads_req->lock_num]);
}
LOG_EVENT_STOP(msg, thread_id);
return 0;
}
void threads_print_mode(void)
{
log_text(LOG_INFO, "Doing thread subsystem performance test");
log_text(LOG_INFO, "Thread yields per test: %d Locks used: %d",
thread_yields, thread_locks);
}
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