[PATCH] D24864: [libcxxabi] Refactor pthread usage into a separate API

[Asiri Rathnayake via cfe-commits]

rmaprath created this revision.
rmaprath added reviewers: EricWF, mclow.lists, jroelofs, compnerd.
rmaprath added a subscriber: cfe-commits.

This is simply a cleanup of D18482 (patch taken with permission) while adapting it to match what we have already implemented for libcxx.

Note that I haven't included the external-threading stuff yet, this is only refactoring pthread usage of libcxxabi. A follow-up patch will add the external-threading support.

https://reviews.llvm.org/D24864

Files:
  include/__cxxabi_config.h
  src/config.h
  src/cxa_exception.cpp
  src/cxa_exception_storage.cpp
  src/cxa_guard.cpp
  src/fallback_malloc.ipp
  src/threading_support.h
  test/test_fallback_malloc.pass.cpp

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