[Hexagon] [runtime] Protect access to global HexagonBufferManager map#12807
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adstraw
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LGTM; great work debugging by the team.
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Nov 25, 2022
…apache#12807) * Protect access to global buffer manager map * Fix lint
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Each thread has its own thread local storage for workspace and pool objects. But those perform allocations from a global HexagonBufferManager. We found a case where the map was not getting updated during AllocWorkspace, which then later caused FreeWorkspace to fail.
Added a mutex to protect all access to the map.
cc: @nverke @JosephTheOctonaut @adstraw @supersat
cc @areusch @mehrdadh