[PATCH] D68653: [scudo][standalone] Get statistics in a char buffer

[Kostya Kortchinsky via Phabricator via llvm-commits]

cryptoad created this revision.
cryptoad added reviewers: morehouse, hctim, vitalybuka, eugenis, cferris.
Herald added subscribers: Sanitizers, delcypher.
Herald added projects: LLVM, Sanitizers.

Following up on D68471 <https://reviews.llvm.org/D68471>, this CL introduces some `getStats` APIs to
gather statistics in char buffers (`ScopedString` really) instead of
printing them out right away. Ultimately `printStats` will just
output the buffer, but that allows us to potentially do some work
on the intermediate buffer, and can be used for a `mallocz` type
of functionality. This allows us to pretty much get rid of all the
`Printf` calls around, but I am keeping the function in for
debugging purposes.

This changes the existing tests to use the new APIs when required.

I will add new tests as suggested in D68471 <https://reviews.llvm.org/D68471> in another CL.


Repository:
  rCRT Compiler Runtime

https://reviews.llvm.org/D68653

Files:
  lib/scudo/standalone/combined.h
  lib/scudo/standalone/crc32_hw.cpp
  lib/scudo/standalone/primary32.h
  lib/scudo/standalone/primary64.h
  lib/scudo/standalone/quarantine.h
  lib/scudo/standalone/secondary.cpp
  lib/scudo/standalone/secondary.h
  lib/scudo/standalone/size_class_map.h
  lib/scudo/standalone/string_utils.cpp
  lib/scudo/standalone/string_utils.h
  lib/scudo/standalone/tests/primary_test.cpp
  lib/scudo/standalone/tests/quarantine_test.cpp
  lib/scudo/standalone/tests/secondary_test.cpp

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