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Re: [PATCH] Add working-set size and hotness information to fdo summary (issue6465057)
Xinliang David Li <davidxl@google.com> writes:
>
> Process level synchronization problems can happen when two processes
> (running the instrumented binary) exit at the same time. The
> updated/merged counters from one process may be overwritten by another
> process -- this is true for both counter data and summary data.
> Solution 3) does not introduce any new problems.
You could just use lockf() ?
-Andi