Commits on Sep 25, 2024

1. [PAL/Linux-SGX] Print SGX stats on SIGUSR1 and reset them …

   This commit adds support to dump and reset SGX-related statistics
   interactively, using SIGUSR1 signal. This helps to collect SGX-related
   statistics only for a particular period, e.g. skipping the Gramine
   startup and application initialization time and concentrating only on
   the actual application processing.
   
   The printed-out statistics are not precise, as the "stats collecting"
   thread may run in parallel with other threads that update the
   statistics. However, this imprecise implementation is simple and enough
   for perf analysis.
   
   This commit also breaks compatibility: SGX statistics can now only be
   collected and printed when Gramine is built in debug or debugoptimized
   mode. However, this should not affect users as SGX stats is tailored for
   manual debugging and profiling sessions.
   
   Co-authored-by: TejaswineeL <[email protected]>
   Signed-off-by: Dmitrii Kuvaiskii <[email protected]>
   Signed-off-by: TejaswineeL <[email protected]>

   

   Dmitrii Kuvaiskii and TejaswineeL committed Sep 25, 2024
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