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dmsetup: only free resources once in the final interval

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The _update_interval_times() function is called once per reported
object: when shutting down at the end of a run only the first call
should free timestamps. Clear the timestamp pointers after free
and use this to signal to other callers that the clock is already
shut down.
This commit is contained in:
Bryn M. Reeves 2015-08-12 19:16:05 +01:00
parent 0f45aa7f31
commit e96041e18f
1 changed files with 9 additions and 0 deletions
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9
tools/dmsetup.c
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@ -637,6 +637,12 @@ static int _update_interval_times(void)
uint64_t delta_t;
int r = 0;
/*
* Clock shutdown for exit - nothing to do.
*/
if (_timer_fd == TIMER_STOPPED && !_cycle_timestamp)
return 1;
/*
* Current timestamp. If _new_interval is set this is used as
* the new cycle start timestamp.
@ -717,6 +723,9 @@ out:
if (_cycle_timestamp)
dm_timestamp_destroy(_cycle_timestamp);
dm_timestamp_destroy(this_timestamp);
/* Clear timestamp pointers to signal shutdown. */
_cycle_timestamp = this_timestamp = NULL;
}
return r;
}