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Author SHA1 Message Date
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
Douglas Gregor
35d2fcfc8e Teach libc++ about the addressof() overloads it needs to work with 
Objective-C Automatic Reference Counting, where Objective-C object
pointers can have several different qualifiers (__strong, __weak,
__autoreleasing, __unsafe_unretained). These addressof() overloads are
only provided in ARC mode, and the __weak variant is conditionalized
on having weak-reference support in the ARC runtime.

For historical reasons, Clang provides these definitions itself, and
defines the macro _LIBCPP_PREDEFINED_OBJC_ARC_ADDRESSOF to note when
it as done so. The code belongs here, and this redundancy will be
eliminated in the future.

Addresses <rdar://problem/9658274>.


git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@133656 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-22 22:17:44 +00:00
Howard Hinnant
2b1b2d40d7 Provide names for template and function parameters in forward declarations. The purpose is to aid automated documentation tools. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@133008 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-14 19:58:17 +00:00
Howard Hinnant
18884f4e9f Second try at getting noexcept on move and swap for deque. I changed std::alloctor to propagate_on_container_move_assignment so as to make deque<T> move assignment noexcept. What we really need is a compile-time switch that says an allocator always compares equal. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@132490 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-02 21:38:57 +00:00
Howard Hinnant
1694d23e23 noexcept for <memory>. I've added a few extension noexcept to: allocator_traits<A>::deallocate, allocaate<T>::deallocate, return_temporary_buffer, and default_delete<T>::operator()(T*) const. My rationale was: If a std-dicated noexcept function needs to call another std-defined function, that called function must be noexcept. We're all a little new to noexcept, so things like this are to be expected. Also included fix for broken __is_swappable trait pointed out by Marc Glisse, thanks Marc|. And fixed a test case for is_nothrow_destructible. Destructors are now noexcept by default| 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@132261 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-28 14:41:13 +00:00
Howard Hinnant
e003ce4899 __invokable and __invoke_of now check for incomplete types and issue a compile-time diagnostic if they are used with incomplete types for anything except a return type. Note that both arguments *and* parameters are checked for completeness. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@131818 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-22 00:09:02 +00:00
Howard Hinnant
6b41c6047b Corrected some bugs in both memory and the tests. Preparing for being able to turn on support for alias templates. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@131199 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-11 20:21:19 +00:00
Howard Hinnant
2529d02b5d Qualify calls to addressof with std::. Bug 9106 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@124726 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-02-02 17:36:20 +00:00
Howard Hinnant
ac38bae75b fix guard 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@123269 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-11 20:02:45 +00:00
Michael J. Spencer
626916fc25 Add CMake build and fix major Linux blockers. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@121510 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-12-10 19:47:54 +00:00
Howard Hinnant
1468b668aa N3142. Many of these traits are just placeholders with medium quality emulation; waiting on compiler intrinsics to do it right. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@119854 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-19 22:17:28 +00:00
Howard Hinnant
2f6a627394 LWG 1339 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@119699 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-18 16:13:03 +00:00
Howard Hinnant
47761071be LWG 1404 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@119609 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-18 01:40:00 +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
28dbbe0596 Dave Zarzycki showed how the efficiency of shared_ptr could be significantly 
increased.  The following program is running 49% faster:

#include <iostream>
#include <memory>
#include <chrono>
#include <vector>
#include "chrono_io"

int main()
{
    typedef std::chrono::high_resolution_clock Clock;
    Clock::time_point t0 = Clock::now();
    {
        std::shared_ptr<int> p(new int (1));
        std::vector<std::shared_ptr<int> > v(1000000, p);
        v.insert(v.begin(), p);
        v.insert(v.begin(), p);
        v.insert(v.begin(), p);
        v.insert(v.begin(), p);
    }
    Clock::time_point t1 = Clock::now();
    std::cout << (t1-t0) << '\n';
}


git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@119388 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-16 21:33:17 +00:00
Howard Hinnant
726a76fb47 I have reverted all contributions made by Jesse Towner in revision 110724 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@119383 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-16 21:10:23 +00:00
Howard Hinnant
828948148d visibility-decoration. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@114551 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-22 16:48:34 +00:00
Howard Hinnant
36cdf027d2 I am experimenting with putting visibility-default attributes on all struct/classes in libc++. This checkin decorates only basic_string and vector as an experiment, and for review by those in this audience that might know more about visibilty than I do. If I get no negative feedback on this procedure I will begin to decorate the entire library in this way. 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@113590 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-10 16:42:26 +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
92172b891f US 108, N3109 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@111747 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-21 21:14:53 +00:00
Howard Hinnant
e92c3d74ce US 107 
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@111538 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-19 18:39:17 +00:00