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28 Commits

Author SHA1 Message Date
Eric Fiselier
12150a7eb0 Fix const default initialization of lock_guard<> 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@272804 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-06-15 17:04:40 +00:00
Eric Fiselier
10b52a0e56 Implement variadic lock_guard. 
Summary:
This patch implements the variadic `lock_guard` paper. 

Making `lock_guard` variadic is a ABI breaking change because the specialization `lock_guard<_Mutex>` mangles differently then when it was the primary template. This change only provides variadic `lock_guard` in ABI V2 or when `_LIBCPP_ABI_VARIADIC_LOCK_GUARD` is defined.

Note that in ABI V2 `lock_guard` must always be declared as a variadic template, even in C++03, in order to keep the ABI consistent. For this reason `lock_guard` is forward declared as a variadic template in all standard dialects and therefore depends on variadic templates being provided as an extension in C++03. All supported versions of Clang and GCC provide this extension.




Reviewers: mclow.lists

Subscribers: K-ballo, mclow.lists, cfe-commits

Differential Revision: http://reviews.llvm.org/D21260

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@272634 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-06-14 03:48:09 +00:00
Asiri Rathnayake
35ff03b7c2 Refactor pthread usage of libcxx. 
This patch extracts out all the pthread dependencies of libcxx into the
new header __threading_support. The motivation is to make it easy to
re-target libcxx into platforms that do not support pthread.

Original patch from Fulvio Esposito (fulvio.esposito@outlook.com) - D11781

Applied with tweaks - D19412

Change-Id: I301111f0075de93dd8129416e06babc195aa936b

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@268734 91177308-0d34-0410-b5e6-96231b3b80d8
 2016-05-06 14:06:29 +00:00
Jonathan Roelofs
044df63102 Do not include pthread.h and sched.h when threads are disabled 
Patch by Philippe Daouadi!

http://reviews.llvm.org/D9639


git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@246168 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-08-27 17:47:34 +00:00
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
Eric Fiselier
bc1e44d14e LWG2442: call_once() shouldn't DECAY_COPY(). Patch from K-Ballo. 
This patch fixes LWG issue 2422 by removing the DECAY_COPY from call once.
The review can be found here: http://reviews.llvm.org/D10191


git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@239654 91177308-0d34-0410-b5e6-96231b3b80d8
 2015-06-13 02:23:00 +00:00
Sergey Dmitrouk
fff544efbd Explicitly include <sched.h> for sched_yield() 
It might be implicitly included by <pthread.h> (and that's why it worked
so far), but it's not guaranteed (for example, this is not the case with
newlib).

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@223661 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-12-08 14:50:21 +00:00
Jonathan Roelofs
8d86b2e686 Allow libc++ to be built on systems without POSIX threads 
If you're crazy enough to want this sort of thing, then add
-D_LIBCPP_HAS_NO_THREADS to your CXXFLAGS and
--param=additiona_features=libcpp-has-no-threads to your lit commnad line.

http://reviews.llvm.org/D3969


git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@217271 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-09-05 19:45:05 +00:00
Marshall Clow
05d116eb87 std::once_flag was forward declared with _LIBCPP_TYPE_VIS decoration, and the defined with _LIBCPP_TYPE_VIS_ONLY decoration. Make them match 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@214219 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-07-29 21:05:31 +00:00
Howard Hinnant
0f678bd69e Nico Rieck: this patch series fixes visibility issues on Windows as explained in <http://lists.cs.uiuc.edu/pipermail/cfe-dev/2013-August/031214.html>. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@188192 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-08-12 18:38:34 +00:00
Howard Hinnant
83eade6abb No functionality change at this time. I've split _LIBCPP_VISIBLE up into two flags: _LIBCPP_TYPE_VIS and _LIBCPP_FUNC_VIS. This is in preparation for taking advantage of clang's new __type_visibility__ attribute. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@176593 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-03-06 23:30:19 +00:00
Howard Hinnant
33be35effe Dimitry Andric: many visibility fixes. Howard: Much appreciated. Can you send me a patch to CREDITS.TXT? 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@163862 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-14 00:39:16 +00:00
Howard Hinnant
499c61f999 noexcept and constexpr applied to <mutex>. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@160604 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-07-21 16:13:09 +00:00
Howard Hinnant
ec3773c2da Quash a whole bunch of warnings 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@145624 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-01 20:21:04 +00:00
Howard Hinnant
9996844df0 Further macro protection by replacing _[A-Z] with _[A-Z]p 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@145410 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-29 18:15:50 +00:00
Howard Hinnant
66c6f9733b Add protection from min/max macros 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@145407 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-29 16:45:27 +00:00
Howard Hinnant
08e17472e4 Windows support by Ruben Van Boxem. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@142235 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-17 20:05:10 +00:00
Howard Hinnant
0949eedbd6 _STD -> _VSTD to avoid macro clash on windows 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@134190 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-30 21:18:19 +00:00
Howard Hinnant
57cff290a4 I had a giant misunderstanding of what 'synchronizes with' meant in [futures.async]/p5. This invalidated the current design of async in <future>. This is a new design, based on my new understanding, which has been confirmed on the lwg mailing list. The summary is that ~future() (and ~shared_future()) will block when they are created from within async, and the thread hasn't finished yet. As part of this work I created two new type traits: __invokable<F, Args...>::value and __invoke_of<F, Args...>::type. These are what result_of<F(Args...)> wanted to be when it grew up, but never will be. __invoke_of is carefully crafted so that it can serve as its own enable_if (type doesn't exist if the signature isn't invokable). All of this work is C++11 only. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@131639 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-19 15:05:04 +00:00
Howard Hinnant
ad935d583d Brought call_once variadic call up to current spec, which allows move-only functors and move-only arguments, but disallows functors with non-const lvalue reference parameters. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@131414 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-16 19:05:11 +00:00
Howard Hinnant
6fd4b669ca Fixing an ambiguity in variadics found by clang. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@123337 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-12 22:56:59 +00:00
Howard Hinnant
f8f852138f N3191: C++ Timeout Specification 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@119909 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-20 19:16:30 +00:00
Howard Hinnant
b64f8b07c1 license change 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@119395 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-16 22:09:02 +00:00
Howard Hinnant
b9af2eae4a visibility-decoration. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@114559 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-22 18:02:38 +00:00
Howard Hinnant
73d21a4f07 Changed __config to react to all of clang's currently documented has_feature flags, and renamed _LIBCPP_MOVE to _LIBCPP_HAS_NO_RVALUE_REFERENCES to be more consistent with the rest of the libc++'s flags, and with clang's nomenclature. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@113086 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-04 23:28:19 +00:00
Howard Hinnant
324bb03bb9 Fixing whitespace problems 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@111750 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-22 00:02:43 +00:00
Howard Hinnant
f5256e16df Wiped out some non-ascii characters that snuck into the copyright. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@103516 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-11 21:36:01 +00:00
Howard Hinnant
bc8d3f97eb libcxx initial import 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@103490 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-11 19:42:16 +00:00