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Kirill Smelkov
mariadb
Commits
ea7cb6c2
Commit
ea7cb6c2
authored
16 years ago
by
Michael Widenius
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Add missing file: Testing of mutex-wrong-usage-detector
parent
32f81bab
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mysys/test_thr_mutex.c
mysys/test_thr_mutex.c
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mysys/test_thr_mutex.c
0 → 100644
View file @
ea7cb6c2
/* Copyright (C) 2008 Sun Microsystems, Inc
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; version 2 of the License.
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 */
/* Testing of deadlock detector */
#include <my_global.h>
#include <mysys_priv.h>
int
main
(
int
argc
__attribute__
((
unused
)),
char
**
argv
)
{
pthread_mutex_t
LOCK_A
,
LOCK_B
,
LOCK_C
,
LOCK_D
,
LOCK_E
,
LOCK_F
,
LOCK_G
;
pthread_mutex_t
LOCK_H
,
LOCK_I
;
MY_INIT
(
argv
[
0
]);
DBUG_ENTER
(
"main"
);
DBUG_PUSH
(
"d:t:O,/tmp/trace"
);
printf
(
"This program is testing the mutex deadlock detection.
\n
"
"It should print out different failures of wrong mutex usage"
"on stderr
\n\n
"
);
safe_mutex_deadlock_detector
=
1
;
pthread_mutex_init
(
&
LOCK_A
,
MY_MUTEX_INIT_FAST
);
pthread_mutex_init
(
&
LOCK_B
,
MY_MUTEX_INIT_FAST
);
pthread_mutex_init
(
&
LOCK_C
,
MY_MUTEX_INIT_FAST
);
pthread_mutex_init
(
&
LOCK_D
,
MY_MUTEX_INIT_FAST
);
pthread_mutex_init
(
&
LOCK_E
,
MY_MUTEX_INIT_FAST
);
pthread_mutex_init
(
&
LOCK_F
,
MY_MUTEX_INIT_FAST
);
pthread_mutex_init
(
&
LOCK_G
,
MY_MUTEX_INIT_FAST
);
pthread_mutex_init
(
&
LOCK_H
,
MY_MUTEX_INIT_FAST
);
pthread_mutex_init
(
&
LOCK_I
,
MY_MUTEX_INIT_FAST
);
printf
(
"Testing A->B and B->A
\n
"
);
fflush
(
stdout
);
pthread_mutex_lock
(
&
LOCK_A
);
pthread_mutex_lock
(
&
LOCK_B
);
pthread_mutex_unlock
(
&
LOCK_A
);
pthread_mutex_unlock
(
&
LOCK_B
);
/* Test different (wrong) lock order */
pthread_mutex_lock
(
&
LOCK_B
);
pthread_mutex_lock
(
&
LOCK_A
);
/* Should give warning */
pthread_mutex_unlock
(
&
LOCK_A
);
pthread_mutex_unlock
(
&
LOCK_B
);
/* Check that we don't get another warning for same lock */
printf
(
"Testing A->B and B->A again (should not give a warning)
\n
"
);
pthread_mutex_lock
(
&
LOCK_B
);
pthread_mutex_lock
(
&
LOCK_A
);
pthread_mutex_unlock
(
&
LOCK_A
);
pthread_mutex_unlock
(
&
LOCK_B
);
/*
Test of ring with many mutex
We also unlock mutex in different orders to get the unlock code properly
tested.
*/
printf
(
"Testing A->C and C->D and D->A
\n
"
);
pthread_mutex_lock
(
&
LOCK_A
);
pthread_mutex_lock
(
&
LOCK_C
);
pthread_mutex_unlock
(
&
LOCK_A
);
pthread_mutex_unlock
(
&
LOCK_C
);
pthread_mutex_lock
(
&
LOCK_C
);
pthread_mutex_lock
(
&
LOCK_D
);
pthread_mutex_unlock
(
&
LOCK_D
);
pthread_mutex_unlock
(
&
LOCK_C
);
pthread_mutex_lock
(
&
LOCK_D
);
pthread_mutex_lock
(
&
LOCK_A
);
/* Should give warning */
pthread_mutex_unlock
(
&
LOCK_A
);
pthread_mutex_unlock
(
&
LOCK_D
);
printf
(
"Testing E -> F ; H -> I ; F -> H ; H -> I -> E
\n
"
);
fflush
(
stdout
);
pthread_mutex_lock
(
&
LOCK_E
);
pthread_mutex_lock
(
&
LOCK_F
);
pthread_mutex_unlock
(
&
LOCK_E
);
pthread_mutex_unlock
(
&
LOCK_F
);
pthread_mutex_lock
(
&
LOCK_H
);
pthread_mutex_lock
(
&
LOCK_I
);
pthread_mutex_unlock
(
&
LOCK_I
);
pthread_mutex_unlock
(
&
LOCK_H
);
pthread_mutex_lock
(
&
LOCK_F
);
pthread_mutex_lock
(
&
LOCK_H
);
pthread_mutex_unlock
(
&
LOCK_H
);
pthread_mutex_unlock
(
&
LOCK_F
);
pthread_mutex_lock
(
&
LOCK_H
);
pthread_mutex_lock
(
&
LOCK_I
);
pthread_mutex_lock
(
&
LOCK_E
);
/* Should give warning */
pthread_mutex_unlock
(
&
LOCK_E
);
pthread_mutex_unlock
(
&
LOCK_I
);
pthread_mutex_unlock
(
&
LOCK_H
);
printf
(
"
\n
Following shouldn't give any warnings
\n
"
);
printf
(
"Testing A->B and B->A without deadlock detection
\n
"
);
fflush
(
stdout
);
/* Reinitialize mutex to get rid of old wrong usage markers */
pthread_mutex_destroy
(
&
LOCK_A
);
pthread_mutex_destroy
(
&
LOCK_B
);
pthread_mutex_init
(
&
LOCK_A
,
MY_MUTEX_INIT_FAST
);
pthread_mutex_init
(
&
LOCK_B
,
MY_MUTEX_INIT_FAST
);
/* Start testing */
my_pthread_mutex_lock
(
&
LOCK_A
,
MYF
(
MYF_NO_DEADLOCK_DETECTION
));
pthread_mutex_lock
(
&
LOCK_B
);
pthread_mutex_unlock
(
&
LOCK_A
);
pthread_mutex_unlock
(
&
LOCK_B
);
pthread_mutex_lock
(
&
LOCK_A
);
my_pthread_mutex_lock
(
&
LOCK_B
,
MYF
(
MYF_NO_DEADLOCK_DETECTION
));
pthread_mutex_unlock
(
&
LOCK_A
);
pthread_mutex_unlock
(
&
LOCK_B
);
printf
(
"Testing A -> C ; B -> C ; A->B
\n
"
);
fflush
(
stdout
);
pthread_mutex_lock
(
&
LOCK_A
);
pthread_mutex_lock
(
&
LOCK_C
);
pthread_mutex_unlock
(
&
LOCK_C
);
pthread_mutex_unlock
(
&
LOCK_A
);
pthread_mutex_lock
(
&
LOCK_B
);
pthread_mutex_lock
(
&
LOCK_C
);
pthread_mutex_unlock
(
&
LOCK_C
);
pthread_mutex_unlock
(
&
LOCK_B
);
pthread_mutex_lock
(
&
LOCK_A
);
pthread_mutex_lock
(
&
LOCK_B
);
pthread_mutex_unlock
(
&
LOCK_B
);
pthread_mutex_unlock
(
&
LOCK_A
);
/* Cleanup */
pthread_mutex_destroy
(
&
LOCK_A
);
pthread_mutex_destroy
(
&
LOCK_B
);
pthread_mutex_destroy
(
&
LOCK_C
);
pthread_mutex_destroy
(
&
LOCK_D
);
pthread_mutex_destroy
(
&
LOCK_E
);
pthread_mutex_destroy
(
&
LOCK_F
);
pthread_mutex_destroy
(
&
LOCK_G
);
pthread_mutex_destroy
(
&
LOCK_H
);
pthread_mutex_destroy
(
&
LOCK_I
);
my_end
(
MY_DONT_FREE_DBUG
);
exit
(
0
);
}
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