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This should be nothing but a load-time optimization. I'm trying to reduce load time initializers and this is a big one. No visible functionality change intended.

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@177212 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Howard Hinnant 2013-03-16 00:17:53 +00:00
parent e47bc9bc4f
commit e33c2d1926
1 changed files with 9 additions and 1 deletions
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10
src/memory.cpp
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@ -122,7 +122,15 @@ __shared_weak_count::__get_deleter(const type_info&) const _NOEXCEPT
#if __has_feature(cxx_atomic) #if __has_feature(cxx_atomic)
static const std::size_t __sp_mut_count = 16; static const std::size_t __sp_mut_count = 16;
static mutex mut_back[__sp_mut_count]; static pthread_mutex_t mut_back_imp[__sp_mut_count] =
{
PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER,
PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER,
PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER,
PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER
};
static mutex* mut_back = reinterpret_cast<std::mutex*>(mut_back_imp);
_LIBCPP_CONSTEXPR __sp_mut::__sp_mut(void* p) _NOEXCEPT _LIBCPP_CONSTEXPR __sp_mut::__sp_mut(void* p) _NOEXCEPT
: __lx(p) : __lx(p)