Just wondering. If memory usage was the concern, why not simple compile
without tracing?
This way we pay one more slot per thread. Plus some lookup. What do we earn?
Maybe I'm missing something?
Joerg
On Sat, Oct 28, 2017 at 09:01:15PM +0200, felix.winkelm...@bevuta.com
wrote:
This is intended to fix #1356: threads may be retained too long in the
trace buffer, because some sort of method is required to extract the
call chain for a specific thread (multiple threads can create entries in
the trace buffer and thus must be distinguished).
Now a thread has an additional slot with a unique ID, which is stored
in the trace buffer instead of the thread itself. Peter suggested a
gensym, but this patch uses a pair, which is (slightly) cheaper and
doesn't bump the gensym counter.
Looks good to me, pushed!
Cheers,
Peter
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