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MDEV-17845 Extreme high open file limit used

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SHOW STATUS LIKE 'Open_files' was showing 18446744073709551615

my_file_opened used statistic_increment/statistic_decrement,
so one-off errors were normal and expected. But they confused
monitoring tools, so let's move my_file_opened to use atomics.
This commit is contained in:
Sergei Golubchik
2019-05-04 13:11:25 +02:00
parent 3d7e06d4ab
commit 15c79c41e4
8 changed files with 36 additions and 35 deletions
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2
mysys/my_fopen.c
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@ -223,7 +223,7 @@ FILE *my_fdopen(File Filedes, const char *name, int Flags, myf MyFlags)
{
if (my_file_info[Filedes].type != UNOPEN)
{
statistic_decrement(my_file_opened, &THR_LOCK_open); /* File is opened with my_open ! */
thread_safe_decrement32(&my_file_opened); /* File is opened with my_open ! */
}
else
{