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28 Commits

Author SHA1 Message Date
Howard Hinnant
74f4da7219 Stephan Tolksdorf: fixes the issue in the <atomic> header and adds corresponding tests. I've used macros to fall back to a user-provided default constructor if _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS (though I suspect that there won't be many users defining that macro). 
The tests use placement new to check that atomic values get properly zero-initialized. I had to modify the atomic_is_lock_free test, because default initialization of an object of const type 'const A' (aka 'const atomic<int>') requires a user-provided default constructor.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@180945 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-05-02 20:18:43 +00:00
Howard Hinnant
7b9d6a8d40 Implement the ATOMIC_*_LOCK_FREE macros. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@173084 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-01-21 20:39:41 +00:00
Howard Hinnant
6ae47055f9 atomic_bool was missing (just a typedef to atomic<bool>). 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@171498 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-01-04 18:58:50 +00:00
Howard Hinnant
7eb9f1e3a3 Align <atomic> with clang r163964 which disallows const _Atomic types. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@164004 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-16 20:33:09 +00:00
Howard Hinnant
300c67ab92 Apply noexcept and constexpr to <atomic>. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@154526 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-11 20:14:21 +00:00
Richard Smith
6186c7fe6a Switch libc++ from __atomic_* builtins to __c11_atomic_* builtins. 
Per discussion with Howard, we are not interested in maintaining
compatibility with older versions of clang.

All tests pass with ToT clang, except for two which assert due to
a pre-existing, unrelated bug.


git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@154521 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-11 18:55:46 +00:00
David Chisnall
b2292091cb Now that clang supports doing the right thing with regard to atomic 
initialisation, do the right thing with regard to atomic initialisation.

Note: clang r154507 or later required for <atomic> to work now.



git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@154508 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-11 17:26:23 +00:00
David Chisnall
0341c820a0 Fix use of __atomic_is_lock_free() intrinsic. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@154093 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-05 13:13:24 +00:00
David Chisnall
83b2c84a3c Some fixes to <atomic> operations to explicitly use atomic types and operations. 
The integral types now work with clang trunk (if you remove the guard), although we're still missing an intrinsic for initialising atomics (needed for C1x too).

Howard: Please review.



git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@146865 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-19 11:44:20 +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
154002bb5d Provide a more readable error message for <atomic> until it is implemented. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@128636 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-03-31 16:39:39 +00:00
Howard Hinnant
770d1c4ea7 After a long break to wait for the atomic spec to settle, this completes the library part of <atomic>. It currently won't even parse as it depends on the existence of the intrinsics specified at http://libcxx.llvm.org/atomic_design_a.html. Everything has been tested using fake intrinsics which have now been removed. As the intrinsics come online, the ATOMIC_* macros will need to be adjusted to reflect which operations are lock-free. These macros will probably need to be #ifdef'd for each supported platform. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@121267 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-08 17:20:28 +00:00
Howard Hinnant
d2f6afbfab atomics ... 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@121204 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-07 23:24:41 +00:00
Howard Hinnant
91e2f26fec Work on <atomic> continues. The file size is actually sane now... 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@121181 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-07 20:46:14 +00:00
Howard Hinnant
4777bf2799 Getting <atomic> warmed back up. We have a hopefully more stable spec now. And I believe the intrinsic spec at http://libcxx.llvm.org/atomic_design_a.html is still good. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@121064 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-06 23:10:08 +00:00
Howard Hinnant
bce9c3132d [atomics.types.address] 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@117033 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-21 17:44:19 +00:00
Howard Hinnant
5bbe97ddaa atomic_schar, atomic_uchar, atomic_short, atomic_ushort, atomic_int, atomic_uint, atomic_long, atomic_ulong, atomic_llong, atomic_ullong, atomic_char16_t, atomic_char32_t and atomic_wchar_t. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@116860 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-19 21:22:10 +00:00
Howard Hinnant
e738501eb3 atomic_char 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@116813 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-19 16:51:18 +00:00
Howard Hinnant
21ef47f436 Changing <atomic> to follow Design A 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@116742 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-18 20:39:07 +00:00
Howard Hinnant
6cac2c2c9c Make flag type configurable by the compiler 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@115614 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-05 14:02:23 +00:00
Howard Hinnant
002f1d341b Filling out the infrastructure in <atomic> 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@115577 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-04 23:55:35 +00:00
Howard Hinnant
611fdaf229 Still working on the basic design of <atomic>. I'm working towards a system by which the compiler only needs to define the strongest intrinsics it can. Weaker atomics in the library automatically try stronger and stronger variants, picking the weakest compiler intrinsic available. If no compiler intrinsics are available for a given operation, the library locks a mutex and does the job. Better documentation to follow... 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@115538 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-10-04 18:52:54 +00:00
Howard Hinnant
79101aec3a [atomics.flag] completed. Initialization is not working on clang and can't be made to work without defaulted default constructors. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@115207 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-30 21:05:29 +00:00
Howard Hinnant
f701e25c49 Name change of intrinsics as suggested by Jeffrey Yasskin 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@115145 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-30 14:04:35 +00:00
Howard Hinnant
767ae2b483 Contemplating this <atomic> reorganization... 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@115087 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-29 21:20:03 +00:00
Howard Hinnant
ed760f40b7 Wrestling with the slowly dawning realization that <atomic> isn't implementable on any compiler at my disposal... 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@115054 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-29 18:13:54 +00:00
Howard Hinnant
d1176e29b0 [atomics.order] 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@114966 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-28 17:13:38 +00:00
Howard Hinnant
8f73c63658 Getting started on <atomic> 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@114887 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-27 21:17:38 +00:00