Eric Fiselier 00f6beaed4 [libc++] Cleanup and document <__threading_support> ... 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		2017-01-06 20:05:40 +00:00
..
ABIVersioning.rst	Use __config_site when building libc++. Also cleanup ABI versioning doc	2015-10-14 00:22:05 +00:00
CapturingConfigInfo.rst
DebugMode.rst	Implement a throwing version of _LIBCPP_ASSERT.	2016-12-28 04:58:52 +00:00
ThreadingSupportAPI.rst	[libc++] Cleanup and document <__threading_support>	2017-01-06 20:05:40 +00:00
VisibilityMacros.rst	Fix Sphinx build error caused by bad indentation	2017-01-05 00:04:37 +00:00