[PATCH] D68351: [profile] Add a mode to continuously sync counter updates to a file

[Sajjad Mirza via Phabricator via llvm-commits]

sajjadm added a comment.

Not sure it belongs in this CL specifically, but would it be possible to later add a mode that defers the initialization of the mmap'd file until specifically requested by the process?



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Comment at: compiler-rt/lib/profile/InstrProfiling.h:179
+ * program initialization time. If the filename is changed in one image, there
+ * is no way to remap the counter-to-file mappings in every other image.
  */
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I'm afraid I don't follow, could you explain in more detail why changing the filename is a problem?


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  https://reviews.llvm.org/D68351/new/

https://reviews.llvm.org/D68351