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locking issues,

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test for LONGLONG_MIN in decimal.c


myisam/mi_create.c:
  lock THR_LOCK_myisam later
mysys/thr_alarm.c:
  remove misplaced comment and "safety" if()
server-tools/instance-manager/instance.cc:
  add unlock
strings/decimal.c:
  correct the test for LONGLONG_MIN. fix debug sprintf
This commit is contained in:
unknown 2005-12-23 20:50:28 +01:00
parent 06e9966396
commit bcc1ecd37b
4 changed files with 20 additions and 21 deletions
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5
myisam/mi_create.c
View file

@ -72,7 +72,6 @@ int mi_create(const char *name,uint keys,MI_KEYDEF *keydefs,
}
LINT_INIT(dfile);
LINT_INIT(file);
pthread_mutex_lock(&THR_LOCK_myisam);
errpos=0;
options=0;
bzero((byte*) &share,sizeof(share));
@ -135,7 +134,7 @@ int mi_create(const char *name,uint keys,MI_KEYDEF *keydefs,
pack_reclength++;
min_pack_length++;
/* We must test for 257 as length includes pack-length */
if (test(rec->length >= 257))
if (test(rec->length >= 257))
{
long_varchar_count++;
pack_reclength+= 2; /* May be packed on 3 bytes */
@ -542,6 +541,8 @@ int mi_create(const char *name,uint keys,MI_KEYDEF *keydefs,
if (! (flags & HA_DONT_TOUCH_DATA))
share.state.create_time= (long) time((time_t*) 0);
pthread_mutex_lock(&THR_LOCK_myisam);
if (ci->index_file_name)
{
fn_format(filename, ci->index_file_name,"",MI_NAME_IEXT,4);

26
mysys/thr_alarm.c
View file

@ -401,7 +401,7 @@ void end_thr_alarm(my_bool free_structures)
{
DBUG_ENTER("end_thr_alarm");
if (alarm_aborted != 1) /* If memory not freed */
{
{
pthread_mutex_lock(&LOCK_alarm);
DBUG_PRINT("info",("Resheduling %d waiting alarms",alarm_queue.elements));
alarm_aborted= -1; /* mark aborted */
@ -415,13 +415,10 @@ void end_thr_alarm(my_bool free_structures)
if (free_structures)
{
struct timespec abstime;
/*
The following test is just for safety, the caller should not
depend on this
*/
DBUG_ASSERT(!alarm_queue.elements);
/* Wait until alarm thread dies */
DBUG_ASSERT(!alarm_queue.elements);
/* Wait until alarm thread dies */
set_timespec(abstime, 10); /* Wait up to 10 seconds */
while (alarm_thread_running)
{
@ -429,16 +426,13 @@ void end_thr_alarm(my_bool free_structures)
if (error == ETIME || error == ETIMEDOUT)
break; /* Don't wait forever */
}
if (!alarm_queue.elements)
delete_queue(&alarm_queue);
alarm_aborted= 1;
pthread_mutex_unlock(&LOCK_alarm);
if (!alarm_thread_running) /* Safety */
{
delete_queue(&alarm_queue);
alarm_aborted= 1;
pthread_mutex_unlock(&LOCK_alarm);
if (!alarm_thread_running) /* Safety */
{
pthread_mutex_destroy(&LOCK_alarm);
pthread_cond_destroy(&COND_alarm);
}
pthread_mutex_destroy(&LOCK_alarm);
pthread_cond_destroy(&COND_alarm);
}
}
else

3
server-tools/instance-manager/instance.cc
View file

@ -255,7 +255,10 @@ static void start_and_monitor_instance(Instance_options *old_instance_options,
log_info("starting instance %s", instance_name_buff);
if (start_process(old_instance_options, &process_info))
{
instance_map->unlock();
return; /* error is logged */
}
/* allow users to delete instances */
instance_map->unlock();

7
strings/decimal.c
View file

@ -1069,9 +1069,9 @@ int decimal2longlong(decimal_t *from, longlong *to)
}
}
/* boundary case: 9223372036854775808 */
if (unlikely(from->sign==0 && x < 0 && -x < 0))
if (unlikely(from->sign==0 && x == LONGLONG_MIN))
{
*to= -1-x;
*to= LONGLONG_MAX;
return E_DEC_OVERFLOW;
}
@ -2675,7 +2675,8 @@ void test_pr(const char *s1, int prec, int dec, char filler, const char *orig,
int slen= sizeof(s2);
int res;
sprintf(s, "'%s', %d, %d, '%c'", s1, prec, dec, filler);
sprintf(s, filler ? "'%s', %d, %d, '%c'" : "'%s', %d, %d, '\\0'",
s1, prec, dec, filler);
end= strend(s1);
string2decimal(s1, &a, &end);
res= decimal2string(&a, s2, &slen, prec, dec, filler);