Commit Graph

3 Commits

Author SHA1 Message Date
Martin Storsjo bf02a09103 [cmake] Add a config option LIBCXX_HAS_WIN32_THREAD_API for enforcing win32 threads
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
2018-01-05 20:48:29 +00:00
Asiri Rathnayake e3d832a3e8 [libcxx] Improve design documentation for the external-thread-library
configuration

NFC.

Differential revision: https://reviews.llvm.org/D28610

Reviewers: EricWF
llvm-svn: 292108
2017-01-16 12:44:08 +00:00
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