On Wed, 18 Sep 2024 15:37:49 +0800
fengchengwen <fengcheng...@huawei.com> wrote:
> ...
>
> > +
> > +static enum {
> > + LOG_TIMESTAMP_NONE = 0,
> > + LOG_TIMESTAMP_TIME, /* time since start */
> > + LOG_TIMESTAMP_DELTA, /* time since last message */
> > + LOG_TIMESTAMP_RELTIME, /* relative time since last message */
> > + LOG_TIMESTAMP_CTIME, /* Unix standard time format */
> > + LOG_TIMESTAMP_ISO, /* ISO8601 time format */
>
> Some of the impl should consider multiple-thread safety.
>
> And for multiple-process, how about the secondary-processes align the
> main-process.
As much as possible, they are thread safe, that is why locatime_r is used.
Of course if multiple threads are printing it is possible that time stamps
could be out of order. I.e CPU A got timestamp and is formatting message,
and CPU B got timestamp is formatting message. The formatting might take longer
for A.
