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Author SHA1 Message Date
Marshall Clow
23ef151614 Update synposis in <memory> to show move semantics for weak_ptr; add tests for already existing move semantics. Mark LWG issues #2315 (no changes needed), 2316 (move semantics for weak_ptr), 2252 (previous commit) and 2271 (previous commit) as complete. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@202931 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-03-05 03:12:04 +00:00
Logan Chien
e1678a18d9 Remove default function template argument from the header. 
GCC will treat the default function template arguments as a
compilation error if C++0x is not enabled.

This commit workaround the compilation error by moving the
SFINAE check to function argument instead of the template
argument.


git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@200523 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-31 09:30:46 +00:00
Howard Hinnant
3f81e9eeba This fixes a very subtle ABI problem concerning the copy constructor of 
pair, and a couple of pair-like implementation detail types.  The
C++98/03 and 11 standards all specify that the copy constructor of
pair<int, int> is trivial. However as libc++ tracked the draft C++11
standard over the years, this copy constructor became non-trivial, and
then just recently was corrected back to trivial for C++11.

Unfortunately (for libc++1) the Itanium ABI specifies different calling
conventions for trivial and non-trivial copy constructors.  Therefore
currently the C++03 libc++ copy constructor for pair<int, int> is ABI
incompatible with the C++11 libc++ copy constructor for pair<int, int>.
This is Bad(tm).   This patch corrects the situation by making this copy
constructor trivial in C++03 mode as well.

Just in case it is needed for an incomplete C++11 compiler, libc++
retains the ability to support pair with rvalue references, but without
defaulted special members.  However the pair needs non-trivial special
members to implement this special case, (as it did when clang was in
this place a couple of years ago).

During this work a bug was also found and fixed in
is_trivially_constructible.

And there is a minor drive-by fix in <__config> regarding
__type_visibility__.

A test is updated to ensure that the copy constructor of pair<int, int>
is trivial in both C++03 and C++11.  This test will necessarily fail for
a compiler that implements rvalue references but not defaulted special
members.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@194536 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-11-13 00:39:22 +00:00
Howard Hinnant
8127758024 David Chisnall: macro protect 'test' in __has_pointer_type_imp. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@191126 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-09-21 01:45:05 +00:00
Howard Hinnant
37c4acfe5e G M: Make shared_ptr a little more gentle for some compilers. No impact on clang. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@190732 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-09-13 23:56:00 +00:00
Marshall Clow
1b5f3adcef Updated the synopsis for weak_ptr<T>::owner_before to match the code. No code changes. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@189812 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-09-03 14:37:50 +00:00
Marshall Clow
08b4f3f99b LWG Issue 2162: mark allocator_traits::maxsize as noexcept 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@189399 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-08-27 20:22:15 +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
a4e87abbb9 My previous reorganization of addressof broke -std=c++03. Thanks much to Arnold Schwaighofer for catching this. This patch also catches a few more missing addressof in <future>, thanks go to Zhihao Yuan for catching these. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@187997 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-08-08 18:38:55 +00:00
Arnold Schwaighofer
a709c823f7 Revert r187927. 
Zhihao Yuan: Replace operator& with addressof in reference_wrapper constructor.

It breaks a clang bootstrap.



git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@187959 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-08-08 03:06:24 +00:00
Howard Hinnant
d8bfe7ba56 Zhihao Yuan: Replace operator& with addressof in reference_wrapper constructor. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@187927 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-08-07 23:02:42 +00:00
Howard Hinnant
24ae8f8e5b Matthew Dempsky: Attached patch replaces the type punning with memcpy(), which on 
x86/x86-64 clang optimizes to direct word accesses anyway.  This fixes an unaligned word access in murmurhash/cityhash.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@185558 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-07-03 17:39:28 +00:00
Marshall Clow
fb5511027b Adorn make_unique with visibility and inline attributes 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@185468 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-07-02 20:06:09 +00:00
Marshall Clow
fd7481e96d Implement n3656 - make_unique. Thanks to Howard for the review and suggestions. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@185352 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-07-01 18:16:03 +00:00
Howard Hinnant
9360e9f944 Minor bug fix for allowing an extension of const-qualified types in containers. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@183481 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-06-07 01:56:37 +00:00
Howard Hinnant
8c23819220 Expose accidentally removed __compressed_pair constructor taking piecewise_construct_t. This fixes http://llvm.org/bugs/show_bug.cgi?id=15918 . 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@181217 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-05-06 16:58:36 +00:00
Howard Hinnant
05e7d24b3d default_delete needs a static_assert against void types. I had previously thought that sizeof(void) would take care of this. I was wrong. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@180213 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-04-24 19:44:26 +00:00
Howard Hinnant
4313ec3975 addressof misbehaving for type with an implicit conversion operator to char&. This fixes http://llvm.org/bugs/show_bug.cgi?id=15754 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@179608 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-04-16 17:27:56 +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
4a0e74fff8 Alexey Samsonov: #ifdefs out undefined function in static build of libc++ w/o RTTI. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@176026 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-02-25 15:50:36 +00:00
Howard Hinnant
f619e230cc Fix exception safety bug in vector::push_back 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@172250 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-01-11 20:36:59 +00:00
Howard Hinnant
9c0df1416f Rename uses of _ and __ because these are getting stepped on by macros from other system code. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@167038 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-10-30 19:06:59 +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
5fec82dc0d Implement [util.smartptr.shared.atomic]. This is the last unimplemented 
section in libc++.  This requires a recompiled dylib.  Failure to rebuild
the dylib will result in a link-time error if and only if the functions from
[util.smartptr.shared.atomic] are used.

The implementation is not lock free.  After considerable thought, I know of no
way to make the implementation lock free.  Ideas welcome along that front.  But
changing the ABI of shared_ptr is not on the table at this point.

The mutex used to lock these function is encapsulated by std::__sp_mut.  The
only thing the client knows about std::__sp_mut is that it has a void* data
member, can't be constructed, and has lock and unlock members.  Within the
binary __sp_mut is currently implemented as a pointer to a std::mutex.  That can
change in the future without disturbing the ABI (as long as sizeof(__sp_mut)
remains constant.

I specifically did not make __sp_mut a spin lock as I have a pathological
distrust of spin locks.  Testing on OS X reveals that the use of std::mutex in
this role is not a large performance penalty as long as the contention for the
mutex is low (more likely to get the lock than to have to wait).  In the future
we can still make __sp_mut a spin lock if that is what is desired (without ABI
damage).

The dylib contains 16 __sp_mut's to be chosen based on the hash of the address
of the shared_ptr.  The constant 16 is a ball-park reasonable space/time
tradeoff.

std::hash<T*> was changed to call __murmur2_or_cityhash, instead of the identity
function.  I had thought we had already done this, but I was mistaken.

All of this is under #if __has_feature(cxx_atomic) even though the
implementation is not lock free, because the signatures require access to
std::memory_order, which is currently available only under
__has_feature(cxx_atomic).

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@160940 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-07-30 01:40:57 +00:00
Howard Hinnant
46e9493c68 Appy constexpr to <memory>. Picked up a few missing noexcepts as well. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@159902 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-07-07 20:56:04 +00:00
Howard Hinnant
9b763e0945 Revert fix to http://llvm.org/bugs/show_bug.cgi?id=12867 for the reason now included in the code comment. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@157128 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-19 20:20:49 +00:00
Howard Hinnant
762657693d Protect __shared_weak_count::__get_deleter declaration with _LIBCPP_NO_RTTI. Fixes http://llvm.org/bugs/show_bug.cgi?id=12867 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@157049 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-18 13:06:21 +00:00
Howard Hinnant
87073e4bfb Greatly scale back ambitions of emulating move semantics in C++03 mode. It was causing more problems than it solved. This fixes http://llvm.org/bugs/show_bug.cgi?id=12704. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@155918 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-01 15:37:54 +00:00
Howard Hinnant
7786188d15 Modernize conversion to bool to the explicit bool conversion operator (library wide). This fixes http://llvm.org/bugs/show_bug.cgi?id=12058. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@151088 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-02-21 21:46:43 +00:00
Howard Hinnant
3fadda314a Modernize relational operators for shared_ptr and unique_ptr. This includes adding support for nullptr, and using less<T*>. Fixes http://llvm.org/bugs/show_bug.cgi?id=12056. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@151084 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-02-21 21:02:58 +00:00
Howard Hinnant
b0bfd9bdd6 Implement a few optimizations for vector push_back and insert. Fixes r10828365. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@150542 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-02-15 00:41:34 +00:00
Howard Hinnant
a18778751c Enable full functionality of shared_ptr<const void> by adding allocator<const void>. Credit to John Hurley for discovering this bug. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@148508 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-01-19 23:15:22 +00:00
Howard Hinnant
571994088f 1. Fix make_shared<const T>. 2. Allow allocator<const T> as an extension. 3. Refactor work which fixed unique_ptr<const T[]>. 4. Remove no-longer-needed private declarations from unique_ptr. 5. Add constraints to some shared_ptr and weak_ptr constructors and assignment operators so that is_constructible/is_assignable give the correct answers for shared_ptr and weak_ptr. 6. Make defensive preparations in the shared_ptr free functions for the introduction of shared_ptr<T[]> in the future. 7. As an optimization, add move constructor and move assignment to weak_ptr. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@147437 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-01-02 17:56:02 +00:00
Howard Hinnant
8292d74270 The exception recovery mechanism for the uninitialized_* algorithms did not work for iterators into discontiguous memory. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@147343 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-29 17:45:35 +00:00
Howard Hinnant
6cc99fa338 Fix http://llvm.org/bugs/show_bug.cgi?id=11616 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@146881 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-19 17:58:44 +00:00
Howard Hinnant
8e84350ebf Allow unique_ptr<T const []> to be constructed and assigned from a unique_ptr<T[]> 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@146853 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-18 21:19:44 +00:00
Howard Hinnant
0a63119a76 Allow unique_ptr<T const []> to be constructed with a T* (in addition to a const T*) 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@146736 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-16 15:37:23 +00:00
Howard Hinnant
d4cf215e08 Fix http://llvm.org/bugs/show_bug.cgi?id=11461. Credit Alberto Ganesh Barbati. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@146345 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-11 20:31:33 +00:00
Howard Hinnant
c00f75dc75 Installation of CityHash by Craig Silverstein 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@146329 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-10 20:28:56 +00:00
Howard Hinnant
40c13d31c5 Starting using murmur2 when combining multiple size_t's into a single hash, and also for basic_string. Also made hash<thread::id> ever so slighly more portable. I had to tweak one test which is questionable (definitely not portable) anyway. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@145795 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-05 00:08:45 +00:00
Howard Hinnant
cf2654bae7 Version #next on the hash functions for scalars. This builds on Dave's work, extends it to T*, and changes the way double and long double are handled (no longer convert to float on 32 bit). I also picked up a minor bug with uninitialized bits on the upper end of size_t when sizeof(size_t) > sizeof(T), e.g. in hash<float>. Most of the functionality has been put in one place: __scalar_hash in <memory>. Unfortunately I could not reuse __scalar_hash for hash<long double> on x86 because of the padding bits which need to be zeroed. I didn't want to add this zeroing step to the more general __scalar_hash when it isn't needed (in the absence of padding bits). I'm not ignoring the hash<string> issue (possibly changing that to a better hash). I just haven't gotten there yet. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@145778 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-03 21:11:36 +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
f8800b12c5 Fix <rdar://problem/10217868>. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@140907 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-01 00:26:36 +00:00
Howard Hinnant
23369ee812 Configure to get along with 2.9 clang 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@136526 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-29 21:35:53 +00:00
Howard Hinnant
464aa5cad3 http://llvm.org/bugs/show_bug.cgi?id=10390 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@135393 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-18 15:51:59 +00:00
Howard Hinnant
61aa6013c3 Correct for new rules regarding implicitly deleted special members. http://llvm.org/bugs/show_bug.cgi?id=10191 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@134248 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-01 19:24:36 +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