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[libomptarget][amdgpu] Precisely manage hsa lifetime

Authored by JonChesterfield on Sep 9 2021, 8:30 AM.



The hsa library must be initialized before any calls into it and
destructed after the last call into it. There have been a number of bugs in
this area related to member variables which would like to use raii to manage
resources acquired from hsa.

This patch moves the init/shutdown of hsa into a class, such that when used as
the first member variable (could be a base), the lifetime of other member
variables are reliably scoped within it. This will allow other classes to use
raii reliably when used as member variables within the global.

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Event Timeline

JonChesterfield created this revision.Sep 9 2021, 8:30 AM
JonChesterfield requested review of this revision.Sep 9 2021, 8:30 AM
Herald added a project: Restricted Project. · View Herald TranscriptSep 9 2021, 8:30 AM
pdhaliwal added inline comments.Sep 9 2021, 8:44 AM

This can be removed.

  • Drop second shutdown call
JonChesterfield marked an inline comment as done.Sep 9 2021, 9:09 AM
JonChesterfield added inline comments.


JonChesterfield marked an inline comment as done.Sep 9 2021, 9:10 AM
pdhaliwal accepted this revision.Sep 9 2021, 9:25 AM

Looks good! Thanks.

This revision is now accepted and ready to land.Sep 9 2021, 9:25 AM
This revision was landed with ongoing or failed builds.Sep 9 2021, 9:28 AM
This revision was automatically updated to reflect the committed changes.