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log_manager.cc

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blockbuf_get_writepos, when all existing buffers in blockbuf list are full, a new block buffer is created and added to the list. Adding to the list is done with mutex on hold. Mutex shouldn't be freed before the next iteration in while loop, which expects that bblist mutex is on hold. At the end of the function, removed an unnecessary debug assertion.

testlog.c
	Enabled more intensive write test. Replaced TRUE and FALSE with true, false, respectively.

skygw_utils.cc
	simple_mutex_unlock, added debug assertion to ensure that pthread mutex's user counter is always at least 0 (it goes negative in double free).
This commit is contained in:
vraatikka
2013-10-10 16:46:51 +03:00
parent e1c7887726
commit cd507f1461
3 changed files with 31 additions and 14 deletions
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19
log_manager/test/testlog.c
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@ -40,9 +40,12 @@ static void* thr_run_morelog(void* data);
#define NTHR 256
#define NITER 100
#if 1
# define TEST1
#endif
#if 0
#define TEST1
#define TEST2
# define TEST2
#endif
#define TEST3
@ -172,13 +175,13 @@ int main(int argc, char* argv[])
do {
skygw_message_wait(mes);
simple_mutex_lock(mtx, TRUE);
simple_mutex_lock(mtx, true);
if (nactive > 0) {
simple_mutex_unlock(mtx);
continue;
}
break;
} while(TRUE);
} while(true);
for (i=0; i<NTHR; i++) {
pthread_join(thr[i]->tid, NULL);
@ -223,13 +226,13 @@ int main(int argc, char* argv[])
do {
skygw_message_wait(mes);
simple_mutex_lock(mtx, TRUE);
simple_mutex_lock(mtx, true);
if (nactive > 0) {
simple_mutex_unlock(mtx);
continue;
}
break;
} while(TRUE);
} while(true);
for (i=0; i<NTHR; i++) {
pthread_join(thr[i]->tid, NULL);
@ -504,7 +507,7 @@ static void* thr_run(
skygw_logmanager_init( 0, NULL);
skygw_logmanager_init( 0, NULL);
skygw_logmanager_done();
simple_mutex_lock(td->mtx, TRUE);
simple_mutex_lock(td->mtx, true);
*td->nactive -= 1;
simple_mutex_unlock(td->mtx);
skygw_message_send(td->mes);
@ -557,7 +560,7 @@ static void* thr_run_morelog(
str,
i);
}
simple_mutex_lock(td->mtx, TRUE);
simple_mutex_lock(td->mtx, true);
*td->nactive -= 1;
simple_mutex_unlock(td->mtx);
skygw_message_send(td->mes);