bcm5719-llvm/libcxx/docs/DesignDocs/ThreadingSupportAPI.rst, branch meklort-10.0.1

[cmake] Add a config option LIBCXX_HAS_WIN32_THREAD_API for enforcing win32 threads

2018-01-05T20:48:29+00:00

This allows keeping libcxx using win32 threads even if a version of pthread.h is installed. This matches the existing cmake option LIBCXX_HAS_PTHREAD_API. Also add missing documentation about the internal define _LIBCPP_HAS_THREAD_API_WIN32. Differential Revision: https://reviews.llvm.org/D41764 llvm-svn: 321896

[libcxx] Improve design documentation for the external-thread-library

2017-01-16T12:44:08+00:00

configuration NFC. Differential revision: https://reviews.llvm.org/D28610 Reviewers: EricWF llvm-svn: 292108

[libc++] Cleanup and document <__threading_support>

2017-01-06T20:05:40+00:00

Summary: This patch attempts to clean up the macro configuration mess in `<__threading_support>`, specifically the mess involving external threading variants. Additionally this patch adds design documentation for `<__threading_support>` and the configuration macros it uses. The primary change in this patch is separating the idea of an "external API" provided by `<__external_threading>` and the idea of having an external threading library. Now `_LIBCPP_HAS_THREAD_API_EXTERNAL` means that libc++ should use `<__external_threading>` and that the header is expected to exist. Additionally the new macro `_LIBCPP_HAS_THREAD_LIBRARY_EXTERNAL` is now used to configure for using an "external library" with the default threading API. Reviewers: compnerd, rmaprath Subscribers: smeenai, cfe-commits, mgorny Differential Revision: https://reviews.llvm.org/D28316 llvm-svn: 291275