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Minor fixup in <ratio> and add optional support for shared_mutex and upgrade_mutex which must be opted into with #define _LIBCPP_SHARED_LOCK

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@120258 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Howard Hinnant
2010-11-28 19:41:07 +00:00
parent d397d03651
commit ac417faebc
2 changed files with 36 additions and 16 deletions
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32
include/__mutex_base
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@@ -18,6 +18,16 @@
#pragma GCC system_header
#ifdef _LIBCPP_SHARED_LOCK
namespace ting {
template <class> class shared_lock;
template <class> class upgrade_lock;
}
#endif // _LIBCPP_SHARED_LOCK
_LIBCPP_BEGIN_NAMESPACE_STD
class _LIBCPP_VISIBLE mutex
@@ -143,6 +153,28 @@ public:
__u.__owns_ = false;
return *this;
}
#ifdef _LIBCPP_SHARED_LOCK
unique_lock(ting::shared_lock<mutex_type>&&, try_to_lock_t);
template <class _Clock, class _Duration>
unique_lock(ting::shared_lock<mutex_type>&&,
const chrono::time_point<_Clock, _Duration>&);
template <class _Rep, class _Period>
unique_lock(ting::shared_lock<mutex_type>&&,
const chrono::duration<_Rep, _Period>&);
explicit unique_lock(ting::upgrade_lock<mutex_type>&&);
unique_lock(ting::upgrade_lock<mutex_type>&&, try_to_lock_t);
template <class _Clock, class _Duration>
unique_lock(ting::upgrade_lock<mutex_type>&&,
const chrono::time_point<_Clock, _Duration>&);
template <class _Rep, class _Period>
unique_lock(ting::upgrade_lock<mutex_type>&&,
const chrono::duration<_Rep, _Period>&);
#endif // _LIBCPP_SHARED_LOCK
#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
void lock();