Eric Fiselier c6e466911f [libcxx] Add atomic_support.h header to src that handles needed atomic operations. ...

Summary:
In some places in libc++ we need to use the `__atomic_*` builtins. This patch adds a header that provides access to those builtins in a uniform way from within the dylib source.

If the compiler building the dylib does not support these builtins then a warning is issued.

Only relaxed loads are needed within the headers. A singe function to do these relaxed loads has been added to `<memory>`.

This patch applies the new atomic builtins to `__shared_count` and `call_once`.

Reviewers: mclow.lists

Subscribers: majnemer, jroelofs, cfe-commits

Differential Revision: http://reviews.llvm.org/D10406

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@241532 91177308-0d34-0410-b5e6-96231b3b80d8

2015-07-07 00:27:16 +00:00

..

support

[libcxx] Add atomic_support.h header to src that handles needed atomic operations.

2015-07-07 00:27:16 +00:00

algorithm.cpp

Allow libc++ to be built on systems without POSIX threads

2014-09-05 19:45:05 +00:00

bind.cpp

license change

2010-11-16 22:09:02 +00:00

chrono.cpp

When building libc++, we use '"' as a delimiter instead of '<' when including libc++ header files. This is so that the dylib gets built with our headers; rather than the system-installed ones. We do this in most places already, just fixing a couple of inconsistent uses.

2015-06-23 14:45:02 +00:00

condition_variable.cpp

Allow libc++ to be built on systems without POSIX threads

2014-09-05 19:45:05 +00:00

config_elast.h

Reword ELAST warning

2015-02-24 01:59:38 +00:00

debug.cpp

Fix use after free and calls to operator comma in debug mode

2015-03-19 03:20:02 +00:00

exception.cpp

Move uncaught_exeption() definition inside the #ifdef block like uncaught_exceptions()

2015-06-02 22:25:23 +00:00

future.cpp

Fix PR23293 - Do not unlock shared state before notifying consumers.

2015-06-12 00:41:34 +00:00

hash.cpp

Fix typos

2014-05-15 11:27:39 +00:00

ios.cpp

[libcxx] Set _LIBCPP_ELAST for mingw.

2015-01-06 17:34:51 +00:00

iostream.cpp

Make the presence of stdin and stdout optional.

2015-03-26 14:35:46 +00:00

locale.cpp

Make locale code compile on CloudABI.

2015-07-06 15:39:36 +00:00

memory.cpp

[libcxx] Add atomic_support.h header to src that handles needed atomic operations.

2015-07-07 00:27:16 +00:00

mutex.cpp

[libcxx] Add atomic_support.h header to src that handles needed atomic operations.

2015-07-07 00:27:16 +00:00

new.cpp

Fix for LWG Issue 2458: N3778 and new library deallocation signatures.

2015-05-18 17:48:45 +00:00

optional.cpp

Add all the relational operators to std::experimental::optional. Also update bad_optional_access to match the Library Fundamentals draft standard. This is not all of the upcoming changes to optional, though.

2014-12-09 14:49:17 +00:00

random.cpp

Add support for arc4random() to random_device.

2015-03-10 07:46:06 +00:00

regex.cpp

Base regex code on char_class_type.

2014-07-29 19:23:39 +00:00

shared_mutex.cpp

Implement N4508: shared_mutex. Reviewed as http://reviews.llvm.org/D10480

2015-06-30 14:04:14 +00:00

stdexcept.cpp

Exceptions store the message as reference counted string for

2014-04-30 19:54:11 +00:00

string.cpp

Print log/error messages on stderr, not stdout

2015-03-10 07:57:43 +00:00

strstream.cpp

Switch to using C++ style casts.

2014-01-04 17:43:00 +00:00

system_error.cpp

Fix -Wpessimizing-move warning by remove the call to std::move.

2015-04-30 21:47:28 +00:00

thread.cpp

Don't include <sys/sysctl.h> on CloudABI.

2015-03-10 08:01:10 +00:00

typeinfo.cpp

Re-add bad_cast and bad_typeid default ctor definitions under libsupc++.

2013-10-03 22:04:10 +00:00

utility.cpp

Put std::piecewise_construct_t back into the dylib for ABI stability. When clients are in C++11/constexpr mode this will be safely ignored because piecewise_construct is then declared with internal linkage.

2012-04-03 23:45:46 +00:00

valarray.cpp

Revert "Turn off extern templates for most uses."

2014-08-15 17:58:56 +00:00