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Fixed possible use of old cached times if runtime went backwards.

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If ngx_time_sigsafe_update() updated only ngx_cached_err_log_time, and
then clock was adjusted backwards, the cached_time[slot].sec might
accidentally match current seconds on next ngx_time_update() call,
resulting in various cached times not being updated.

Fix is to clear the cached_time[slot].sec to explicitly mark cached times
are stale and need updating.
This commit is contained in:
Maxim Dounin 2012-08-03 09:10:39 +00:00
parent d053bacb9c
commit 25197b3229
1 changed files with 4 additions and 0 deletions
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4
src/core/ngx_times.c
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@ -211,6 +211,10 @@ ngx_time_sigsafe_update(void)
slot++; slot++;
} }
tp = &cached_time[slot];
tp->sec = 0;
ngx_gmtime(sec + cached_gmtoff * 60, &tm); ngx_gmtime(sec + cached_gmtoff * 60, &tm);
p = &cached_err_log_time[slot][0]; p = &cached_err_log_time[slot][0];