* PING^2: [PATCH v3] eliminate mutex in fast path of __register_frame
@ 2022-08-26 13:01 Thomas Neumann
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From: Thomas Neumann @ 2022-08-26 13:01 UTC (permalink / raw)
To: gcc-patches
Summary: __register_frame and the corresponding _Unwind_Find_FDE use a
global mutex for frame registration and unwinding. This can lead to very
poor performance on machines with high core counts. This patch organizes
the frames in a b-tree with read-optimized synchronization instead,
which allows for fully parallel unwinding.
See:
https://gcc.gnu.org/pipermail/gcc-patches/2022-June/597256.html
Best
Thomas
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2022-08-26 13:01 PING^2: [PATCH v3] eliminate mutex in fast path of __register_frame Thomas Neumann
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