1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
|
/* 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"
typedef struct
{
pthread_mutex_t mutex;
char pad[256];
} thread_lock;
/* Mutex test arguments */
static sb_arg_t mutex_args[] =
{
{"mutex-num", "total size of mutex array", SB_ARG_TYPE_INT, "4096"},
{"mutex-locks", "number of mutex locks to do per thread",
SB_ARG_TYPE_INT, "50000"},
{"mutex-loops", "number of empty loops to do inside mutex lock",
SB_ARG_TYPE_INT, "10000"},
{NULL, NULL, SB_ARG_TYPE_NULL, NULL}
};
/* Mutex test operations */
static int mutex_init(void);
static void mutex_print_mode(void);
static sb_request_t mutex_get_request(int tid);
static int mutex_execute_request(sb_request_t *, int);
static int mutex_done(void);
static sb_test_t mutex_test =
{
"mutex",
"Mutex performance test",
{
mutex_init,
NULL,
NULL,
mutex_print_mode,
mutex_get_request,
mutex_execute_request,
NULL,
NULL,
NULL,
mutex_done
},
{
NULL,
NULL,
NULL,
NULL
},
mutex_args,
{NULL, NULL}
};
static thread_lock *thread_locks;
static unsigned int mutex_num;
static unsigned int mutex_loops;
static unsigned int mutex_locks;
static unsigned int global_var;
int register_test_mutex(sb_list_t *tests)
{
SB_LIST_ADD_TAIL(&mutex_test.listitem, tests);
return 0;
}
int mutex_init(void)
{
unsigned int i;
mutex_num = sb_get_value_int("mutex-num");
mutex_loops = sb_get_value_int("mutex-loops");
mutex_locks = sb_get_value_int("mutex-locks");
thread_locks = (thread_lock *)malloc(mutex_num * sizeof(thread_lock));
if (thread_locks == NULL)
{
log_text(LOG_FATAL, "Memory allocation failure!");
return 1;
}
for (i = 0; i < mutex_num; i++)
pthread_mutex_init(&thread_locks[i].mutex, NULL);
return 0;
}
int mutex_done(void)
{
unsigned int i;
for(i=0; i < mutex_num; i++)
pthread_mutex_destroy(&thread_locks[i].mutex);
free(thread_locks);
return 0;
}
sb_request_t mutex_get_request(int tid)
{
sb_request_t sb_req;
sb_mutex_request_t *mutex_req = &sb_req.u.mutex_request;
(void)tid; /* unused */
sb_req.type = SB_REQ_TYPE_MUTEX;
mutex_req->nlocks = mutex_locks;
mutex_req->nloops = mutex_loops;
return sb_req;
}
int mutex_execute_request(sb_request_t *sb_req, int thread_id)
{
unsigned int i;
unsigned int c=0;
unsigned int current_lock;
sb_mutex_request_t *mutex_req = &sb_req->u.mutex_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);
do
{
current_lock = rand() % mutex_num;
for (i = 0; i < mutex_req->nloops; i++)
c++;
pthread_mutex_lock(&thread_locks[current_lock].mutex);
global_var++;
pthread_mutex_unlock(&thread_locks[current_lock].mutex);
mutex_req->nlocks--;
}
while (mutex_req->nlocks > 0);
LOG_EVENT_STOP(msg, thread_id);
/* Perform only one request per thread */
return 1;
}
void mutex_print_mode(void)
{
log_text(LOG_INFO, "Doing mutex performance test");
}
|
