Add array support to std::shared_ptr for C++17
* doc/xml/manual/status_cxx2017.xml: Update status. * doc/html/manual/status.html: Regenerate. * include/bits/shared_ptr.h (shared_ptr(unique_ptr<_Yp, _Del>)): Add extension constructor to maintain C++14 behaviour. * include/bits/shared_ptr_base.h (__sp_array_delete): Add new struct. (__shared_count(_Ptr, false_type), __shared_count(_Ptr, true_type)): New constructors. (__sp_compatible_with, __sp_is_constructible): Add specializations for array support. (__sp_is_constructible_arr, __sp_is_constructible_arrN): New helpers. (__shared_ptr_access): New base class for observer member functions. (__shared_ptr::element_type): Use remove_extent. (__shared_ptr::_UniqCompatible): Add __sp_compatible_with check. (__shared_ptr(_Yp*)): Use tag dispatching to call new __shared_count constructor. (__shared_ptr(unique_ptr<_Yp, _Del>)): Add extension constructor. (__shared_ptr::operator*, __shared_ptr::operator->): Remove and inherit from __shared_ptr_access base class. (__shared_ptr::__has_esft_base): Return false for array types. (__weak_ptr::element_type): Use remove_extent. * include/experimental/bits/shared_ptr.h (__libfund_v1): Remove. (__shared_ptr<__libfund_v1<_Tp>>): Remove specializations. (__wak_ptr<__libfund_v1<_Tp>>): Likewise. (experimental::__sp_compatible_v): Redefine using __sp_compatible_with. (experimental::__sp_is_constructible_v): Redefine using __sp_is_constructible. (get_deleter, operator<<): Change argument from __shared_ptr to shared_ptr. * testsuite/20_util/shared_ptr/cons/array.cc: New test. * testsuite/20_util/shared_ptr/cons/unique_ptr_array.cc: Adjust for new behaviour. * testsuite/20_util/shared_ptr/observers/array.cc: Test observers for arrays. * testsuite/20_util/shared_ptr/observers/array_neg.cc: New test. From-SVN: r242369
This commit is contained in:
Jonathan Wakely
Jonathan Wakely
parent
a2b4c18823
commit
b2343559f2
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@ -1,3 +1,41 @@
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2016-11-13 Jonathan Wakely <jwakely@redhat.com>
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* doc/xml/manual/status_cxx2017.xml: Update status.
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* doc/html/manual/status.html: Regenerate.
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* include/bits/shared_ptr.h (shared_ptr(unique_ptr<_Yp, _Del>)): Add
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extension constructor to maintain C++14 behaviour.
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* include/bits/shared_ptr_base.h (__sp_array_delete): Add new struct.
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(__shared_count(_Ptr, false_type), __shared_count(_Ptr, true_type)):
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New constructors.
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(__sp_compatible_with, __sp_is_constructible): Add specializations
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for array support.
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(__sp_is_constructible_arr, __sp_is_constructible_arrN): New helpers.
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(__shared_ptr_access): New base class for observer member functions.
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(__shared_ptr::element_type): Use remove_extent.
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(__shared_ptr::_UniqCompatible): Add __sp_compatible_with check.
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(__shared_ptr(_Yp*)): Use tag dispatching to call new __shared_count
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constructor.
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(__shared_ptr(unique_ptr<_Yp, _Del>)): Add extension constructor.
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(__shared_ptr::operator*, __shared_ptr::operator->): Remove and
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inherit from __shared_ptr_access base class.
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(__shared_ptr::__has_esft_base): Return false for array types.
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(__weak_ptr::element_type): Use remove_extent.
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* include/experimental/bits/shared_ptr.h (__libfund_v1): Remove.
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(__shared_ptr<__libfund_v1<_Tp>>): Remove specializations.
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(__wak_ptr<__libfund_v1<_Tp>>): Likewise.
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(experimental::__sp_compatible_v): Redefine using
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__sp_compatible_with.
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(experimental::__sp_is_constructible_v): Redefine using
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__sp_is_constructible.
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(get_deleter, operator<<): Change argument from __shared_ptr to
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shared_ptr.
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* testsuite/20_util/shared_ptr/cons/array.cc: New test.
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* testsuite/20_util/shared_ptr/cons/unique_ptr_array.cc: Adjust for
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new behaviour.
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* testsuite/20_util/shared_ptr/observers/array.cc: Test observers for
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arrays.
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* testsuite/20_util/shared_ptr/observers/array_neg.cc: New test.
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2016-11-13 Ville Voutilainen <ville.voutilainen@gmail.com>
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Implement P0403R1, Literal suffixes for basic_string_view.
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@ -565,11 +565,11 @@ Feature-testing recommendations for C++</a>.
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<a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0220r1.html" target="_top">
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P0220R1
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</a>
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</td><td align="center"> 7 </td><td align="left"> <code class="code">__cpp_lib_apply >= 201603</code> </td></tr><tr bgcolor="#C8B0B0"><td align="left"> Library Fundamentals V1 TS Components: <code class="code">shared_ptr<T[]></code> </td><td align="left">
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</td><td align="center"> 7 </td><td align="left"> <code class="code">__cpp_lib_apply >= 201603</code> </td></tr><tr><td align="left"> Library Fundamentals V1 TS Components: <code class="code">shared_ptr<T[]></code> </td><td align="left">
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<a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0220r1.html" target="_top">
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P0220R1
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</a>
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</td><td align="center"> No </td><td align="left"> <code class="code">__cpp_lib_shared_ptr_arrays >= 201603</code> </td></tr><tr><td align="left"> Library Fundamentals V1 TS Components: Searchers </td><td align="left">
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</td><td align="center"> 7 </td><td align="left"> <code class="code">__cpp_lib_shared_ptr_arrays >= 201603</code> </td></tr><tr><td align="left"> Library Fundamentals V1 TS Components: Searchers </td><td align="left">
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<a class="link" href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0220r1.html" target="_top">
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P0220R1
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</a>
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@ -158,14 +158,13 @@ Feature-testing recommendations for C++</link>.
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</row>
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<row>
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<?dbhtml bgcolor="#C8B0B0" ?>
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<entry> Library Fundamentals V1 TS Components: <code>shared_ptr<T[]></code> </entry>
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<entry>
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<link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0220r1.html">
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P0220R1
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</link>
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</entry>
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<entry align="center"> No </entry>
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<entry align="center"> 7 </entry>
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<entry> <code>__cpp_lib_shared_ptr_arrays >= 201603</code> </entry>
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</row>
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@ -277,6 +277,16 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
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shared_ptr(unique_ptr<_Yp, _Del>&& __r)
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: __shared_ptr<_Tp>(std::move(__r)) { }
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#if __cplusplus <= 201402L && _GLIBCXX_USE_DEPRECATED
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// This non-standard constructor exists to support conversions that
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// were possible in C++11 and C++14 but are ill-formed in C++17.
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// If an exception is thrown this constructor has no effect.
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template<typename _Yp, typename _Del,
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_Constructible<unique_ptr<_Yp, _Del>, __sp_array_delete>* = 0>
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shared_ptr(unique_ptr<_Yp, _Del>&& __r)
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: __shared_ptr<_Tp>(std::move(__r), __sp_array_delete()) { }
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#endif
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/**
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* @brief Construct an empty %shared_ptr.
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* @post use_count() == 0 && get() == nullptr
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@ -559,6 +559,12 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
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_Impl _M_impl;
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};
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// The default deleter for shared_ptr<T[]> and shared_ptr<T[N]>.
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struct __sp_array_delete
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{
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template<typename _Yp>
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void operator()(_Yp* __p) const { delete[] __p; }
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};
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template<_Lock_policy _Lp>
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class __shared_count
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@ -582,6 +588,16 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
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}
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}
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template<typename _Ptr>
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__shared_count(_Ptr __p, /* is_array = */ false_type)
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: __shared_count(__p)
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{ }
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template<typename _Ptr>
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__shared_count(_Ptr __p, /* is_array = */ true_type)
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: __shared_count(__p, __sp_array_delete{}, allocator<void>())
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{ }
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template<typename _Ptr, typename _Deleter>
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__shared_count(_Ptr __p, _Deleter __d)
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: __shared_count(__p, std::move(__d), allocator<void>())
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@ -848,8 +864,12 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
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_M_pi = nullptr;
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}
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// Helper traits for shared_ptr
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#define __cpp_lib_shared_ptr_arrays 201603
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// Helper traits for shared_ptr of array:
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// A pointer type Y* is said to be compatible with a pointer type T* when
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// either Y* is convertible to T* or Y is U[N] and T is U cv [].
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template<typename _Yp_ptr, typename _Tp_ptr>
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struct __sp_compatible_with
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: false_type
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@ -860,17 +880,161 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
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: is_convertible<_Yp*, _Tp*>::type
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{ };
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template<typename _Tp, _Lock_policy _Lp>
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class __shared_ptr
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template<typename _Up, size_t _Nm>
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struct __sp_compatible_with<_Up(*)[_Nm], _Up(*)[]>
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: true_type
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{ };
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template<typename _Up, size_t _Nm>
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struct __sp_compatible_with<_Up(*)[_Nm], const _Up(*)[]>
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: true_type
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{ };
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template<typename _Up, size_t _Nm>
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struct __sp_compatible_with<_Up(*)[_Nm], volatile _Up(*)[]>
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: true_type
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{ };
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template<typename _Up, size_t _Nm>
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struct __sp_compatible_with<_Up(*)[_Nm], const volatile _Up(*)[]>
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: true_type
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{ };
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// Test conversion from Y(*)[N] to U(*)[N] without forming invalid type Y[N].
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template<typename _Up, size_t _Nm, typename _Yp, typename = void>
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struct __sp_is_constructible_arrN
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: false_type
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{ };
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template<typename _Up, size_t _Nm, typename _Yp>
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struct __sp_is_constructible_arrN<_Up, _Nm, _Yp, __void_t<_Yp[_Nm]>>
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: is_convertible<_Yp(*)[_Nm], _Up(*)[_Nm]>::type
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{ };
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// Test conversion from Y(*)[] to U(*)[] without forming invalid type Y[].
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template<typename _Up, typename _Yp, typename = void>
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struct __sp_is_constructible_arr
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: false_type
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{ };
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template<typename _Up, typename _Yp>
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struct __sp_is_constructible_arr<_Up, _Yp, __void_t<_Yp[]>>
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: is_convertible<_Yp(*)[], _Up(*)[]>::type
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{ };
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// Trait to check if shared_ptr<T> can be constructed from Y*.
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template<typename _Tp, typename _Yp>
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struct __sp_is_constructible;
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// When T is U[N], Y(*)[N] shall be convertible to T*;
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template<typename _Up, size_t _Nm, typename _Yp>
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struct __sp_is_constructible<_Up[_Nm], _Yp>
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: __sp_is_constructible_arrN<_Up, _Nm, _Yp>::type
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{ };
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// when T is U[], Y(*)[] shall be convertible to T*;
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template<typename _Up, typename _Yp>
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struct __sp_is_constructible<_Up[], _Yp>
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: __sp_is_constructible_arr<_Up, _Yp>::type
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{ };
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// otherwise, Y* shall be convertible to T*.
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template<typename _Tp, typename _Yp>
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struct __sp_is_constructible
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: is_convertible<_Yp*, _Tp*>::type
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{ };
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// Define operator* and operator-> for shared_ptr<T>.
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template<typename _Tp, _Lock_policy _Lp,
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bool = is_array<_Tp>::value, bool = is_void<_Tp>::value>
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class __shared_ptr_access
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{
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public:
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using element_type = _Tp;
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private:
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// Trait to check if shared_ptr<T> can be constructed from Y*.
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template<typename _Tp1, typename _Yp>
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using __sp_is_constructible = is_convertible<_Yp*, _Tp1*>;
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element_type&
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operator*() const noexcept
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{
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__glibcxx_assert(_M_get() != nullptr);
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return *_M_get();
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}
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element_type*
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operator->() const noexcept
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{
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_GLIBCXX_DEBUG_PEDASSERT(_M_get() != nullptr);
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return _M_get();
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}
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private:
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element_type*
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_M_get() const noexcept
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{ return static_cast<const __shared_ptr<_Tp, _Lp>*>(this)->get(); }
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};
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// Define operator-> for shared_ptr<cv void>.
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template<typename _Tp, _Lock_policy _Lp>
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class __shared_ptr_access<_Tp, _Lp, false, true>
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{
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public:
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using element_type = _Tp;
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element_type*
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operator->() const noexcept
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{
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_GLIBCXX_DEBUG_PEDASSERT(_M_get() != nullptr);
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return static_cast<const __shared_ptr<_Tp, _Lp>*>(this)->get();
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}
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};
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// Define operator[] for shared_ptr<T[]> and shared_ptr<T[N]>.
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template<typename _Tp, _Lock_policy _Lp>
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class __shared_ptr_access<_Tp, _Lp, true, false>
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{
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public:
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using element_type = typename remove_extent<_Tp>::type;
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#if __cplusplus <= 201402L
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[[__deprecated__("shared_ptr<T[]>::operator* is absent from C++17")]]
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element_type&
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operator*() const noexcept
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{
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__glibcxx_assert(_M_ptr != nullptr);
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return *_M_get();
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}
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[[__deprecated__("shared_ptr<T[]>::operator-> is absent from C++17")]]
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element_type*
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operator->() const noexcept
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{
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_GLIBCXX_DEBUG_PEDASSERT(_M_get() != nullptr);
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return _M_get();
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}
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#endif
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element_type&
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operator[](ptrdiff_t __i) const
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{
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__glibcxx_assert(_M_get() != nullptr);
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__glibcxx_assert(!extent<_Tp>::value || __i < extent<_Tp>::value);
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return _M_get()[__i];
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}
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private:
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element_type*
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_M_get() const noexcept
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{ return static_cast<const __shared_ptr<_Tp, _Lp>*>(this)->get(); }
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};
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template<typename _Tp, _Lock_policy _Lp>
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class __shared_ptr
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: public __shared_ptr_access<_Tp, _Lp>
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{
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public:
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using element_type = typename remove_extent<_Tp>::type;
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private:
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// Constraint for taking ownership of a pointer of type _Yp*:
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template<typename _Yp>
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using _SafeConv
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@ -888,9 +1052,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
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// Constraint for construction from unique_ptr:
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template<typename _Yp, typename _Del, typename _Res = void,
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typename _Ptr = typename unique_ptr<_Yp, _Del>::pointer>
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using _UniqCompatible = typename enable_if<
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is_convertible<_Ptr, element_type*>::value
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, _Res>::type;
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using _UniqCompatible = typename enable_if<__and_<
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__sp_compatible_with<_Yp*, _Tp*>, is_convertible<_Ptr, element_type*>
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>::value, _Res>::type;
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// Constraint for assignment from unique_ptr:
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template<typename _Yp, typename _Del>
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@ -909,7 +1073,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
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template<typename _Yp, typename = _SafeConv<_Yp>>
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explicit
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__shared_ptr(_Yp* __p)
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: _M_ptr(__p), _M_refcount(__p)
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: _M_ptr(__p), _M_refcount(__p, typename is_array<_Tp>::type())
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{
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static_assert( !is_void<_Yp>::value, "incomplete type" );
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static_assert( sizeof(_Yp) > 0, "incomplete type" );
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@ -995,6 +1159,24 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
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_M_enable_shared_from_this_with(__raw);
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}
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#if __cplusplus <= 201402L && _GLIBCXX_USE_DEPRECATED
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protected:
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// If an exception is thrown this constructor has no effect.
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template<typename _Tp1, typename _Del,
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typename enable_if<__and_<
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__not_<is_array<_Tp>>, is_array<_Tp1>,
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is_convertible<typename unique_ptr<_Tp1, _Del>::pointer, _Tp*>
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>::value, bool>::type = true>
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__shared_ptr(unique_ptr<_Tp1, _Del>&& __r, __sp_array_delete)
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: _M_ptr(__r.get()), _M_refcount()
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{
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auto __raw = _S_raw_ptr(__r.get());
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_M_refcount = __shared_count<_Lp>(std::move(__r));
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_M_enable_shared_from_this_with(__raw);
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}
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public:
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#endif
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#if _GLIBCXX_USE_DEPRECATED
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// Postcondition: use_count() == 1 and __r.get() == 0
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template<typename _Yp, typename = _Compatible<_Yp>>
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@ -1068,21 +1250,6 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
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reset(_Yp* __p, _Deleter __d, _Alloc __a)
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{ __shared_ptr(__p, __d, std::move(__a)).swap(*this); }
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// Allow class instantiation when _Tp is [cv-qual] void.
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typename std::add_lvalue_reference<element_type>::type
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operator*() const noexcept
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{
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__glibcxx_assert(_M_ptr != 0);
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return *_M_ptr;
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}
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element_type*
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operator->() const noexcept
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{
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_GLIBCXX_DEBUG_PEDASSERT(_M_ptr != 0);
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return _M_ptr;
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}
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element_type*
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get() const noexcept
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{ return _M_ptr; }
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@ -1193,7 +1360,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
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template<typename _Yp>
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struct __has_esft_base<_Yp, __void_t<__esft_base_t<_Yp>>>
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||||
: true_type { };
|
||||
: __not_<is_array<_Tp>> { }; // No enable shared_from_this for arrays
|
||||
|
||||
template<typename _Yp>
|
||||
typename enable_if<__has_esft_base<_Yp>::value>::type
|
||||
|
|
@ -1428,7 +1595,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
|
|||
using _Assignable = _Compatible<_Yp, __weak_ptr&>;
|
||||
|
||||
public:
|
||||
using element_type = _Tp;
|
||||
using element_type = typename remove_extent<_Tp>::type;
|
||||
|
||||
constexpr __weak_ptr() noexcept
|
||||
: _M_ptr(nullptr), _M_refcount()
|
||||
|
|
|
|||
|
|
@ -46,665 +46,20 @@ namespace experimental
|
|||
inline namespace fundamentals_v2
|
||||
{
|
||||
_GLIBCXX_BEGIN_NAMESPACE_VERSION
|
||||
template<typename _Tp> class enable_shared_from_this;
|
||||
_GLIBCXX_END_NAMESPACE_VERSION
|
||||
} // namespace fundamentals_v2
|
||||
} // namespace experimental
|
||||
|
||||
#define __cpp_lib_experimental_shared_ptr_arrays 201406
|
||||
|
||||
_GLIBCXX_BEGIN_NAMESPACE_VERSION
|
||||
|
||||
/*
|
||||
* The specification of std::experimental::shared_ptr is slightly different
|
||||
* to std::shared_ptr (specifically in terms of "compatible" pointers) so
|
||||
* to implement std::experimental::shared_ptr without too much duplication
|
||||
* we make it derive from a partial specialization of std::__shared_ptr
|
||||
* using a special tag type, __libfund_v1.
|
||||
*
|
||||
* There are two partial specializations for the tag type, supporting the
|
||||
* different interfaces of the array and non-array forms.
|
||||
*/
|
||||
|
||||
template <typename _Tp, bool = is_array<_Tp>::value>
|
||||
struct __libfund_v1 { using type = _Tp; };
|
||||
|
||||
// Partial specialization for base class of experimental::shared_ptr<T>
|
||||
// (i.e. the non-array form of experimental::shared_ptr)
|
||||
template<typename _Tp, _Lock_policy _Lp>
|
||||
class __shared_ptr<__libfund_v1<_Tp, false>, _Lp>
|
||||
: private __shared_ptr<_Tp, _Lp>
|
||||
{
|
||||
// For non-arrays, Y* is compatible with T* if Y* is convertible to T*.
|
||||
template<typename _Yp, typename _Res = void>
|
||||
using _Compatible
|
||||
= enable_if_t<experimental::is_convertible_v<_Yp*, _Tp*>, _Res>;
|
||||
|
||||
template<typename _Yp, typename _Del,
|
||||
typename _Ptr = typename unique_ptr<_Yp, _Del>::pointer,
|
||||
typename _Res = void>
|
||||
using _UniqCompatible = enable_if_t<
|
||||
experimental::is_convertible_v<_Yp*, _Tp*>
|
||||
&& experimental::is_convertible_v<_Ptr, _Tp*>,
|
||||
_Res>;
|
||||
|
||||
using _Base_type = __shared_ptr<_Tp>;
|
||||
|
||||
_Base_type& _M_get_base() { return *this; }
|
||||
const _Base_type& _M_get_base() const { return *this; }
|
||||
|
||||
public:
|
||||
using element_type = _Tp;
|
||||
|
||||
constexpr __shared_ptr() noexcept = default;
|
||||
|
||||
template<typename _Tp1, typename = _Compatible<_Tp1>>
|
||||
explicit
|
||||
__shared_ptr(_Tp1* __p)
|
||||
: _Base_type(__p)
|
||||
{ }
|
||||
|
||||
template<typename _Tp1, typename _Deleter, typename = _Compatible<_Tp1>>
|
||||
__shared_ptr(_Tp1* __p, _Deleter __d)
|
||||
: _Base_type(__p, __d)
|
||||
{ }
|
||||
|
||||
template<typename _Tp1, typename _Deleter, typename _Alloc,
|
||||
typename = _Compatible<_Tp1>>
|
||||
__shared_ptr(_Tp1* __p, _Deleter __d, _Alloc __a)
|
||||
: _Base_type(__p, __d, __a)
|
||||
{ }
|
||||
|
||||
template<typename _Deleter>
|
||||
__shared_ptr(nullptr_t __p, _Deleter __d)
|
||||
: _Base_type(__p, __d)
|
||||
{ }
|
||||
|
||||
template<typename _Deleter, typename _Alloc>
|
||||
__shared_ptr(nullptr_t __p, _Deleter __d, _Alloc __a)
|
||||
: _Base_type(__p, __d, __a)
|
||||
{ }
|
||||
|
||||
template<typename _Tp1>
|
||||
__shared_ptr(const __shared_ptr<__libfund_v1<_Tp1>, _Lp>& __r,
|
||||
element_type* __p) noexcept
|
||||
: _Base_type(__r._M_get_base(), __p)
|
||||
{ }
|
||||
|
||||
__shared_ptr(const __shared_ptr&) noexcept = default;
|
||||
__shared_ptr(__shared_ptr&&) noexcept = default;
|
||||
__shared_ptr& operator=(const __shared_ptr&) noexcept = default;
|
||||
__shared_ptr& operator=(__shared_ptr&&) noexcept = default;
|
||||
~__shared_ptr() = default;
|
||||
|
||||
template<typename _Tp1, typename = _Compatible<_Tp1>>
|
||||
__shared_ptr(const __shared_ptr<__libfund_v1<_Tp1>, _Lp>& __r) noexcept
|
||||
: _Base_type(__r._M_get_base())
|
||||
{ }
|
||||
|
||||
template<typename _Tp1, typename = _Compatible<_Tp1>>
|
||||
__shared_ptr(__shared_ptr<__libfund_v1<_Tp1>, _Lp>&& __r) noexcept
|
||||
: _Base_type(std::move((__r._M_get_base())))
|
||||
{ }
|
||||
|
||||
template<typename _Tp1, typename = _Compatible<_Tp1>>
|
||||
explicit
|
||||
__shared_ptr(const __weak_ptr<__libfund_v1<_Tp1>, _Lp>& __r)
|
||||
: _Base_type(__r._M_get_base())
|
||||
{ }
|
||||
|
||||
template<typename _Tp1, typename _Del,
|
||||
typename = _UniqCompatible<_Tp1, _Del>>
|
||||
__shared_ptr(unique_ptr<_Tp1, _Del>&& __r)
|
||||
: _Base_type(std::move(__r))
|
||||
{ }
|
||||
|
||||
#if _GLIBCXX_USE_DEPRECATED
|
||||
// Postcondition: use_count() == 1 and __r.get() == 0
|
||||
template<typename _Tp1, typename = _Compatible<_Tp1>>
|
||||
__shared_ptr(std::auto_ptr<_Tp1>&& __r)
|
||||
: _Base_type(std::move(__r))
|
||||
{ }
|
||||
#endif
|
||||
|
||||
constexpr __shared_ptr(nullptr_t) noexcept : __shared_ptr() { }
|
||||
|
||||
// reset
|
||||
void
|
||||
reset() noexcept
|
||||
{ __shared_ptr(nullptr).swap(*this); }
|
||||
|
||||
template<typename _Tp1>
|
||||
_Compatible<_Tp1>
|
||||
reset(_Tp1* __p)
|
||||
{
|
||||
_GLIBCXX_DEBUG_ASSERT(__p == 0 || __p != get());
|
||||
__shared_ptr(__p).swap(*this);
|
||||
}
|
||||
|
||||
template<typename _Tp1, typename _Deleter>
|
||||
_Compatible<_Tp1>
|
||||
reset(_Tp1* __p, _Deleter __d)
|
||||
{ __shared_ptr(__p, __d).swap(*this); }
|
||||
|
||||
template<typename _Tp1, typename _Deleter, typename _Alloc>
|
||||
_Compatible<_Tp1>
|
||||
reset(_Tp1* __p, _Deleter __d, _Alloc __a)
|
||||
{ __shared_ptr(__p, __d, std::move(__a)).swap(*this); }
|
||||
|
||||
using _Base_type::operator*;
|
||||
using _Base_type::operator->;
|
||||
|
||||
template<typename _Tp1>
|
||||
_Compatible<_Tp1, __shared_ptr&>
|
||||
operator=(const __shared_ptr<__libfund_v1<_Tp1>, _Lp>& __r) noexcept
|
||||
{
|
||||
_Base_type::operator=(__r._M_get_base());
|
||||
return *this;
|
||||
}
|
||||
|
||||
template<class _Tp1>
|
||||
_Compatible<_Tp1, __shared_ptr&>
|
||||
operator=(__shared_ptr<__libfund_v1<_Tp1>, _Lp>&& __r) noexcept
|
||||
{
|
||||
_Base_type::operator=(std::move(__r._M_get_base()));
|
||||
return *this;
|
||||
}
|
||||
|
||||
template<typename _Tp1, typename _Del>
|
||||
_UniqCompatible<_Tp1, _Del, __shared_ptr&>
|
||||
operator=(unique_ptr<_Tp1, _Del>&& __r)
|
||||
{
|
||||
_Base_type::operator=(std::move(__r));
|
||||
return *this;
|
||||
}
|
||||
|
||||
#if _GLIBCXX_USE_DEPRECATED
|
||||
template<typename _Tp1>
|
||||
_Compatible<_Tp1, __shared_ptr&>
|
||||
operator=(std::auto_ptr<_Tp1>&& __r)
|
||||
{
|
||||
_Base_type::operator=(std::move(__r));
|
||||
return *this;
|
||||
}
|
||||
#endif
|
||||
|
||||
void
|
||||
swap(__shared_ptr& __other) noexcept
|
||||
{ _Base_type::swap(__other); }
|
||||
|
||||
template<typename _Tp1>
|
||||
bool
|
||||
owner_before(__shared_ptr<__libfund_v1<_Tp1>, _Lp> const& __rhs) const
|
||||
{ return _Base_type::owner_before(__rhs._M_get_base()); }
|
||||
|
||||
template<typename _Tp1>
|
||||
bool
|
||||
owner_before(__weak_ptr<__libfund_v1<_Tp1>, _Lp> const& __rhs) const
|
||||
{ return _Base_type::owner_before(__rhs._M_get_base()); }
|
||||
|
||||
using _Base_type::operator bool;
|
||||
using _Base_type::get;
|
||||
using _Base_type::unique;
|
||||
using _Base_type::use_count;
|
||||
|
||||
protected:
|
||||
|
||||
// make_shared not yet support for shared_ptr_arrays
|
||||
//template<typename _Alloc, typename... _Args>
|
||||
// __shared_ptr(_Sp_make_shared_tag __tag, const _Alloc& __a,
|
||||
// _Args&&... __args)
|
||||
// : _M_ptr(), _M_refcount(__tag, (_Tp*)0, __a,
|
||||
// std::forward<_Args>(__args)...)
|
||||
// {
|
||||
// void* __p = _M_refcount._M_get_deleter(typeid(__tag));
|
||||
// _M_ptr = static_cast<_Tp*>(__p);
|
||||
// }
|
||||
|
||||
// __weak_ptr::lock()
|
||||
__shared_ptr(const __weak_ptr<__libfund_v1<_Tp>, _Lp>& __r,
|
||||
std::nothrow_t)
|
||||
: _Base_type(__r._M_get_base(), std::nothrow)
|
||||
{ }
|
||||
|
||||
private:
|
||||
template<typename _Tp1, _Lock_policy _Lp1> friend class __weak_ptr;
|
||||
template<typename _Tp1, _Lock_policy _Lp1> friend class __shared_ptr;
|
||||
|
||||
// TODO
|
||||
template<typename _Del, typename _Tp1, _Lock_policy _Lp1>
|
||||
friend _Del* get_deleter(const __shared_ptr<_Tp1, _Lp1>&) noexcept;
|
||||
};
|
||||
|
||||
// Helper traits for shared_ptr of array:
|
||||
|
||||
// Trait that tests if Y* is compatible with T*, for shared_ptr purposes.
|
||||
template<typename _Yp, typename _Tp>
|
||||
struct __sp_compatible
|
||||
: is_convertible<_Yp*, _Tp*>::type
|
||||
{ };
|
||||
|
||||
template<size_t _Nm, typename _Tp>
|
||||
struct __sp_compatible<_Tp[_Nm], _Tp[]>
|
||||
: true_type
|
||||
{ };
|
||||
|
||||
template<size_t _Nm, typename _Tp>
|
||||
struct __sp_compatible<_Tp[_Nm], const _Tp[]>
|
||||
: true_type
|
||||
{ };
|
||||
|
||||
template<typename _Yp, typename _Tp>
|
||||
constexpr bool __sp_compatible_v
|
||||
= __sp_compatible<_Yp, _Tp>::value;
|
||||
|
||||
// Test conversion from Y(*)[N] to U(*)[N] without forming invalid type Y[N].
|
||||
template<typename _Up, size_t _Nm, typename _Yp, typename = void>
|
||||
struct __sp_is_constructible_arrN
|
||||
: false_type
|
||||
{ };
|
||||
|
||||
template<typename _Up, size_t _Nm, typename _Yp>
|
||||
struct __sp_is_constructible_arrN<_Up, _Nm, _Yp, __void_t<_Yp[_Nm]>>
|
||||
: is_convertible<_Yp(*)[_Nm], _Up(*)[_Nm]>::type
|
||||
{ };
|
||||
|
||||
// Test conversion from Y(*)[] to U(*)[] without forming invalid type Y[].
|
||||
template<typename _Up, typename _Yp, typename = void>
|
||||
struct __sp_is_constructible_arr
|
||||
: false_type
|
||||
{ };
|
||||
|
||||
template<typename _Up, typename _Yp>
|
||||
struct __sp_is_constructible_arr<_Up, _Yp, __void_t<_Yp[]>>
|
||||
: is_convertible<_Yp(*)[], _Up(*)[]>::type
|
||||
{ };
|
||||
|
||||
// Trait to check if shared_ptr<T> can be constructed from Y*.
|
||||
template<typename _Tp, typename _Yp>
|
||||
struct __sp_is_constructible;
|
||||
|
||||
// When T is U[N], Y(*)[N] shall be convertible to T*;
|
||||
template<typename _Up, size_t _Nm, typename _Yp>
|
||||
struct __sp_is_constructible<_Up[_Nm], _Yp>
|
||||
: __sp_is_constructible_arrN<_Up, _Nm, _Yp>::type
|
||||
{ };
|
||||
|
||||
// when T is U[], Y(*)[] shall be convertible to T*;
|
||||
template<typename _Up, typename _Yp>
|
||||
struct __sp_is_constructible<_Up[], _Yp>
|
||||
: __sp_is_constructible_arr<_Up, _Yp>::type
|
||||
{ };
|
||||
|
||||
// otherwise, Y* shall be convertible to T*.
|
||||
template<typename _Tp, typename _Yp>
|
||||
struct __sp_is_constructible
|
||||
: is_convertible<_Yp*, _Tp*>::type
|
||||
{ };
|
||||
|
||||
template<typename _Tp, typename _Yp>
|
||||
constexpr bool __sp_is_constructible_v
|
||||
= __sp_is_constructible<_Tp, _Yp>::value;
|
||||
|
||||
|
||||
// Partial specialization for base class of experimental::shared_ptr<T[N]>
|
||||
// and experimental::shared_ptr<T[]> (i.e. the array forms).
|
||||
template<typename _Tp, _Lock_policy _Lp>
|
||||
class __shared_ptr<__libfund_v1<_Tp, true>, _Lp>
|
||||
: private __shared_ptr<remove_extent_t<_Tp>, _Lp>
|
||||
{
|
||||
public:
|
||||
using element_type = remove_extent_t<_Tp>;
|
||||
|
||||
private:
|
||||
struct _Array_deleter
|
||||
{
|
||||
void
|
||||
operator()(element_type const *__p) const
|
||||
{ delete [] __p; }
|
||||
};
|
||||
|
||||
// Constraint for constructing/resetting with a pointer of type _Yp*:
|
||||
template<typename _Yp>
|
||||
using _SafeConv = enable_if_t<__sp_is_constructible_v<_Tp, _Yp>>;
|
||||
|
||||
// Constraint for constructing/assigning from smart_pointer<_Tp1>:
|
||||
template<typename _Tp1, typename _Res = void>
|
||||
using _Compatible = enable_if_t<__sp_compatible_v<_Tp1, _Tp>, _Res>;
|
||||
|
||||
// Constraint for constructing/assigning from unique_ptr<_Tp1, _Del>:
|
||||
template<typename _Tp1, typename _Del,
|
||||
typename _Ptr = typename unique_ptr<_Tp1, _Del>::pointer,
|
||||
typename _Res = void>
|
||||
using _UniqCompatible = enable_if_t<
|
||||
__sp_compatible_v<_Tp1, _Tp>
|
||||
&& experimental::is_convertible_v<_Ptr, element_type*>,
|
||||
_Res>;
|
||||
|
||||
using _Base_type = __shared_ptr<element_type>;
|
||||
|
||||
_Base_type& _M_get_base() { return *this; }
|
||||
const _Base_type& _M_get_base() const { return *this; }
|
||||
|
||||
public:
|
||||
constexpr __shared_ptr() noexcept
|
||||
: _Base_type()
|
||||
{ }
|
||||
|
||||
template<typename _Tp1, typename = _SafeConv<_Tp1>>
|
||||
explicit
|
||||
__shared_ptr(_Tp1* __p)
|
||||
: _Base_type(__p, _Array_deleter())
|
||||
{ }
|
||||
|
||||
template<typename _Tp1, typename _Deleter, typename = _SafeConv<_Tp1>>
|
||||
__shared_ptr(_Tp1* __p, _Deleter __d)
|
||||
: _Base_type(__p, __d)
|
||||
{ }
|
||||
|
||||
template<typename _Tp1, typename _Deleter, typename _Alloc,
|
||||
typename = _SafeConv<_Tp1>>
|
||||
__shared_ptr(_Tp1* __p, _Deleter __d, _Alloc __a)
|
||||
: _Base_type(__p, __d, __a)
|
||||
{ }
|
||||
|
||||
template<typename _Deleter>
|
||||
__shared_ptr(nullptr_t __p, _Deleter __d)
|
||||
: _Base_type(__p, __d)
|
||||
{ }
|
||||
|
||||
template<typename _Deleter, typename _Alloc>
|
||||
__shared_ptr(nullptr_t __p, _Deleter __d, _Alloc __a)
|
||||
: _Base_type(__p, __d, __a)
|
||||
{ }
|
||||
|
||||
template<typename _Tp1>
|
||||
__shared_ptr(const __shared_ptr<__libfund_v1<_Tp1>, _Lp>& __r,
|
||||
element_type* __p) noexcept
|
||||
: _Base_type(__r._M_get_base(), __p)
|
||||
{ }
|
||||
|
||||
__shared_ptr(const __shared_ptr&) noexcept = default;
|
||||
__shared_ptr(__shared_ptr&&) noexcept = default;
|
||||
__shared_ptr& operator=(const __shared_ptr&) noexcept = default;
|
||||
__shared_ptr& operator=(__shared_ptr&&) noexcept = default;
|
||||
~__shared_ptr() = default;
|
||||
|
||||
template<typename _Tp1, typename = _Compatible<_Tp1>>
|
||||
__shared_ptr(const __shared_ptr<__libfund_v1<_Tp1>, _Lp>& __r) noexcept
|
||||
: _Base_type(__r._M_get_base())
|
||||
{ }
|
||||
|
||||
template<typename _Tp1, typename = _Compatible<_Tp1>>
|
||||
__shared_ptr(__shared_ptr<__libfund_v1<_Tp1>, _Lp>&& __r) noexcept
|
||||
: _Base_type(std::move((__r._M_get_base())))
|
||||
{ }
|
||||
|
||||
template<typename _Tp1, typename = _Compatible<_Tp1>>
|
||||
explicit
|
||||
__shared_ptr(const __weak_ptr<__libfund_v1<_Tp1>, _Lp>& __r)
|
||||
: _Base_type(__r._M_get_base())
|
||||
{ }
|
||||
|
||||
template<typename _Tp1, typename _Del,
|
||||
typename = _UniqCompatible<_Tp1, _Del>>
|
||||
__shared_ptr(unique_ptr<_Tp1, _Del>&& __r)
|
||||
: _Base_type(std::move(__r))
|
||||
{ }
|
||||
|
||||
#if _GLIBCXX_USE_DEPRECATED
|
||||
// Postcondition: use_count() == 1 and __r.get() == 0
|
||||
template<typename _Tp1, typename = _Compatible<_Tp1>>
|
||||
__shared_ptr(auto_ptr<_Tp1>&& __r)
|
||||
: _Base_type(std::move(__r))
|
||||
{ }
|
||||
#endif
|
||||
|
||||
constexpr __shared_ptr(nullptr_t) noexcept : __shared_ptr() { }
|
||||
|
||||
// reset
|
||||
void
|
||||
reset() noexcept
|
||||
{ __shared_ptr(nullptr).swap(*this); }
|
||||
|
||||
template<typename _Tp1>
|
||||
_SafeConv<_Tp1>
|
||||
reset(_Tp1* __p)
|
||||
{
|
||||
_GLIBCXX_DEBUG_ASSERT(__p == 0 || __p != get());
|
||||
__shared_ptr(__p, _Array_deleter()).swap(*this);
|
||||
}
|
||||
|
||||
template<typename _Tp1, typename _Deleter>
|
||||
_SafeConv<_Tp1>
|
||||
reset(_Tp1* __p, _Deleter __d)
|
||||
{ __shared_ptr(__p, __d).swap(*this); }
|
||||
|
||||
template<typename _Tp1, typename _Deleter, typename _Alloc>
|
||||
_SafeConv<_Tp1>
|
||||
reset(_Tp1* __p, _Deleter __d, _Alloc __a)
|
||||
{ __shared_ptr(__p, __d, std::move(__a)).swap(*this); }
|
||||
|
||||
element_type&
|
||||
operator[](ptrdiff_t i) const noexcept
|
||||
{
|
||||
_GLIBCXX_DEBUG_ASSERT(get() != 0 && i >= 0);
|
||||
return get()[i];
|
||||
}
|
||||
|
||||
template<typename _Tp1>
|
||||
_Compatible<_Tp1, __shared_ptr&>
|
||||
operator=(const __shared_ptr<__libfund_v1<_Tp1>, _Lp>& __r) noexcept
|
||||
{
|
||||
_Base_type::operator=(__r._M_get_base());
|
||||
return *this;
|
||||
}
|
||||
|
||||
template<class _Tp1>
|
||||
_Compatible<_Tp1, __shared_ptr&>
|
||||
operator=(__shared_ptr<__libfund_v1<_Tp1>, _Lp>&& __r) noexcept
|
||||
{
|
||||
_Base_type::operator=(std::move(__r._M_get_base()));
|
||||
return *this;
|
||||
}
|
||||
|
||||
template<typename _Tp1, typename _Del>
|
||||
_UniqCompatible<_Tp1, _Del, __shared_ptr&>
|
||||
operator=(unique_ptr<_Tp1, _Del>&& __r)
|
||||
{
|
||||
_Base_type::operator=(std::move(__r));
|
||||
return *this;
|
||||
}
|
||||
|
||||
#if _GLIBCXX_USE_DEPRECATED
|
||||
template<typename _Tp1>
|
||||
_Compatible<_Tp1, __shared_ptr&>
|
||||
operator=(auto_ptr<_Tp1>&& __r)
|
||||
{
|
||||
_Base_type::operator=(std::move(__r));
|
||||
return *this;
|
||||
}
|
||||
#endif
|
||||
|
||||
void
|
||||
swap(__shared_ptr& __other) noexcept
|
||||
{ _Base_type::swap(__other); }
|
||||
|
||||
template<typename _Tp1>
|
||||
bool
|
||||
owner_before(__shared_ptr<__libfund_v1<_Tp1>, _Lp> const& __rhs) const
|
||||
{ return _Base_type::owner_before(__rhs._M_get_base()); }
|
||||
|
||||
template<typename _Tp1>
|
||||
bool
|
||||
owner_before(__weak_ptr<__libfund_v1<_Tp1>, _Lp> const& __rhs) const
|
||||
{ return _Base_type::owner_before(__rhs._M_get_base()); }
|
||||
|
||||
using _Base_type::operator bool;
|
||||
using _Base_type::get;
|
||||
using _Base_type::unique;
|
||||
using _Base_type::use_count;
|
||||
|
||||
protected:
|
||||
|
||||
// make_shared not yet support for shared_ptr_arrays
|
||||
//template<typename _Alloc, typename... _Args>
|
||||
// __shared_ptr(_Sp_make_shared_tag __tag, const _Alloc& __a,
|
||||
// _Args&&... __args)
|
||||
// : _M_ptr(), _M_refcount(__tag, (_Tp*)0, __a,
|
||||
// std::forward<_Args>(__args)...)
|
||||
// {
|
||||
// void* __p = _M_refcount._M_get_deleter(typeid(__tag));
|
||||
// _M_ptr = static_cast<_Tp*>(__p);
|
||||
// }
|
||||
|
||||
// __weak_ptr::lock()
|
||||
__shared_ptr(const __weak_ptr<__libfund_v1<_Tp>, _Lp>& __r,
|
||||
std::nothrow_t)
|
||||
: _Base_type(__r._M_get_base(), std::nothrow)
|
||||
{ }
|
||||
|
||||
private:
|
||||
template<typename _Tp1, _Lock_policy _Lp1> friend class __weak_ptr;
|
||||
template<typename _Tp1, _Lock_policy _Lp1> friend class __shared_ptr;
|
||||
|
||||
// TODO
|
||||
template<typename _Del, typename _Tp1, _Lock_policy _Lp1>
|
||||
friend _Del* get_deleter(const __shared_ptr<_Tp1, _Lp1>&) noexcept;
|
||||
};
|
||||
|
||||
// weak_ptr specialization for __shared_ptr array
|
||||
template<typename _Tp, _Lock_policy _Lp>
|
||||
class __weak_ptr<__libfund_v1<_Tp>, _Lp>
|
||||
: __weak_ptr<remove_extent_t<_Tp>, _Lp>
|
||||
{
|
||||
template<typename _Tp1, typename _Res = void>
|
||||
using _Compatible
|
||||
= enable_if_t<__sp_compatible_v<_Tp1, _Tp>, _Res>;
|
||||
|
||||
using _Base_type = __weak_ptr<remove_extent_t<_Tp>>;
|
||||
|
||||
_Base_type& _M_get_base() { return *this; }
|
||||
const _Base_type& _M_get_base() const { return *this; }
|
||||
|
||||
public:
|
||||
using element_type = remove_extent_t<_Tp>;
|
||||
|
||||
constexpr __weak_ptr() noexcept
|
||||
: _Base_type()
|
||||
{ }
|
||||
|
||||
__weak_ptr(const __weak_ptr&) noexcept = default;
|
||||
|
||||
~__weak_ptr() = default;
|
||||
|
||||
template<typename _Tp1, typename = _Compatible<_Tp1>>
|
||||
__weak_ptr(const __weak_ptr<__libfund_v1<_Tp1>, _Lp>& __r) noexcept
|
||||
: _Base_type(__r._M_get_base())
|
||||
{ }
|
||||
|
||||
template<typename _Tp1, typename = _Compatible<_Tp1>>
|
||||
__weak_ptr(const __shared_ptr<__libfund_v1<_Tp1>, _Lp>& __r) noexcept
|
||||
: _Base_type(__r._M_get_base())
|
||||
{ }
|
||||
|
||||
__weak_ptr(__weak_ptr&& __r) noexcept
|
||||
: _Base_type(std::move(__r))
|
||||
{ }
|
||||
|
||||
template<typename _Tp1, typename = _Compatible<_Tp1>>
|
||||
__weak_ptr(__weak_ptr<__libfund_v1<_Tp1>, _Lp>&& __r) noexcept
|
||||
: _Base_type(std::move(__r._M_get_base()))
|
||||
{ }
|
||||
|
||||
__weak_ptr&
|
||||
operator=(const __weak_ptr& __r) noexcept = default;
|
||||
|
||||
template<typename _Tp1>
|
||||
_Compatible<_Tp1, __weak_ptr&>
|
||||
operator=(const __weak_ptr<__libfund_v1<_Tp1>, _Lp>& __r) noexcept
|
||||
{
|
||||
this->_Base_type::operator=(__r._M_get_base());
|
||||
return *this;
|
||||
}
|
||||
|
||||
template<typename _Tp1>
|
||||
_Compatible<_Tp1, __weak_ptr&>
|
||||
operator=(const __shared_ptr<_Tp1, _Lp>& __r) noexcept
|
||||
{
|
||||
this->_Base_type::operator=(__r._M_get_base());
|
||||
return *this;
|
||||
}
|
||||
|
||||
__weak_ptr&
|
||||
operator=(__weak_ptr&& __r) noexcept
|
||||
{
|
||||
this->_Base_type::operator=(std::move(__r));
|
||||
return *this;
|
||||
}
|
||||
|
||||
template<typename _Tp1>
|
||||
_Compatible<_Tp1, __weak_ptr&>
|
||||
operator=(__weak_ptr<_Tp1, _Lp>&& __r) noexcept
|
||||
{
|
||||
this->_Base_type::operator=(std::move(__r._M_get_base()));
|
||||
return *this;
|
||||
}
|
||||
|
||||
void
|
||||
swap(__weak_ptr& __other) noexcept
|
||||
{ this->_Base_type::swap(__other); }
|
||||
|
||||
template<typename _Tp1>
|
||||
bool
|
||||
owner_before(const __shared_ptr<__libfund_v1<_Tp1>, _Lp>& __rhs) const
|
||||
{ return _Base_type::owner_before(__rhs._M_get_base()); }
|
||||
|
||||
template<typename _Tp1>
|
||||
bool
|
||||
owner_before(const __weak_ptr<__libfund_v1<_Tp1>, _Lp>& __rhs) const
|
||||
{ return _Base_type::owner_before(__rhs._M_get_base()); }
|
||||
|
||||
__shared_ptr<__libfund_v1<_Tp>, _Lp>
|
||||
lock() const noexcept // should not be element_type
|
||||
{ return __shared_ptr<__libfund_v1<_Tp>, _Lp>(*this, std::nothrow); }
|
||||
|
||||
using _Base_type::use_count;
|
||||
using _Base_type::expired;
|
||||
using _Base_type::reset;
|
||||
|
||||
private:
|
||||
// Used by __enable_shared_from_this.
|
||||
void
|
||||
_M_assign(element_type* __ptr,
|
||||
const __shared_count<_Lp>& __refcount) noexcept
|
||||
{ this->_Base_type::_M_assign(__ptr, __refcount); }
|
||||
|
||||
template<typename _Tp1, _Lock_policy _Lp1> friend class __shared_ptr;
|
||||
template<typename _Tp1, _Lock_policy _Lp1> friend class __weak_ptr;
|
||||
friend class __enable_shared_from_this<_Tp, _Lp>;
|
||||
friend class experimental::enable_shared_from_this<_Tp>;
|
||||
friend class enable_shared_from_this<_Tp>;
|
||||
};
|
||||
|
||||
_GLIBCXX_END_NAMESPACE_VERSION
|
||||
|
||||
namespace experimental
|
||||
{
|
||||
inline namespace fundamentals_v2
|
||||
{
|
||||
_GLIBCXX_BEGIN_NAMESPACE_VERSION
|
||||
|
||||
// 8.2.1
|
||||
// 8.2.1
|
||||
|
||||
template<typename _Tp> class shared_ptr;
|
||||
template<typename _Tp> class weak_ptr;
|
||||
template<typename _Tp> class enable_shared_from_this;
|
||||
|
||||
template<typename _Tp, _Lock_policy _Lp = __default_lock_policy>
|
||||
using __shared_ptr = std::__shared_ptr<__libfund_v1<_Tp>, _Lp>;
|
||||
template<typename _Yp, typename _Tp>
|
||||
constexpr bool __sp_compatible_v
|
||||
= std::__sp_compatible_with<_Yp*, _Tp*>::value;
|
||||
|
||||
template<typename _Tp, _Lock_policy _Lp = __default_lock_policy>
|
||||
using __weak_ptr = std::__weak_ptr<__libfund_v1<_Tp>, _Lp>;
|
||||
template<typename _Tp, typename _Yp>
|
||||
constexpr bool __sp_is_constructible_v
|
||||
= std::__sp_is_constructible<_Tp, _Yp>::value;
|
||||
|
||||
template<typename _Tp>
|
||||
class shared_ptr : public __shared_ptr<_Tp>
|
||||
|
|
@ -1128,16 +483,15 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
|
|||
{ __a.swap(__b); }
|
||||
|
||||
/// C++14 §20.8.2.2.10
|
||||
template<typename _Del, typename _Tp, _Lock_policy _Lp>
|
||||
template<typename _Del, typename _Tp>
|
||||
inline _Del*
|
||||
get_deleter(const __shared_ptr<_Tp, _Lp>& __p) noexcept
|
||||
get_deleter(const shared_ptr<_Tp>& __p) noexcept
|
||||
{ return std::get_deleter<_Del>(__p); }
|
||||
|
||||
// C++14 §20.8.2.2.11
|
||||
template<typename _Ch, typename _Tr, typename _Tp, _Lock_policy _Lp>
|
||||
template<typename _Ch, typename _Tr, typename _Tp>
|
||||
inline std::basic_ostream<_Ch, _Tr>&
|
||||
operator<<(std::basic_ostream<_Ch, _Tr>& __os,
|
||||
const __shared_ptr<_Tp, _Lp>& __p)
|
||||
operator<<(std::basic_ostream<_Ch, _Tr>& __os, const shared_ptr<_Tp>& __p)
|
||||
{
|
||||
__os << __p.get();
|
||||
return __os;
|
||||
|
|
|
|||
|
|
@ -0,0 +1,273 @@
|
|||
// { dg-do run { target c++11 } }
|
||||
|
||||
// Copyright (C) 2016 Free Software Foundation, Inc.
|
||||
//
|
||||
// This file is part of the GNU ISO C++ Library. This library is free
|
||||
// software; you can redistribute it and/or modify it under the
|
||||
// terms of the GNU General Public License as published by the
|
||||
// Free Software Foundation; either version 3, or (at your option)
|
||||
// any later version.
|
||||
|
||||
// This library is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU General Public License for more details.
|
||||
|
||||
// You should have received a copy of the GNU General Public License along
|
||||
// with this library; see the file COPYING3. If not see
|
||||
// <http://www.gnu.org/licenses/>.
|
||||
|
||||
#include <memory>
|
||||
#include <testsuite_hooks.h>
|
||||
|
||||
// C++1z 20.11.2.2.1 shared_ptr constructors [util.smartptr.shared.const]
|
||||
|
||||
template<typename To, typename From>
|
||||
constexpr bool check()
|
||||
{
|
||||
using std::shared_ptr;
|
||||
using std::is_constructible;
|
||||
return !is_constructible<shared_ptr<To>, shared_ptr<From>>::value
|
||||
&& !is_constructible<shared_ptr<To>, shared_ptr<From>&>::value;
|
||||
}
|
||||
|
||||
static_assert( check<int, int[]>() );
|
||||
static_assert( check<int, int[2]>() );
|
||||
static_assert( check<int[2], void>() );
|
||||
static_assert( check<int[2], int>() );
|
||||
static_assert( check<int[2], int[]>() );
|
||||
static_assert( check<int[], void>() );
|
||||
static_assert( check<int[], int>() );
|
||||
|
||||
int count = 0;
|
||||
|
||||
struct A {
|
||||
A() { ++count; }
|
||||
~A() { --count; }
|
||||
};
|
||||
|
||||
struct B : A { };
|
||||
|
||||
static_assert( check<A, B[2]>() );
|
||||
static_assert( check<A, B[]>() );
|
||||
static_assert( check<A[2], B>() );
|
||||
static_assert( check<A[2], B[2]>() );
|
||||
static_assert( check<A[2], B[]>() );
|
||||
static_assert( check<A[], B>() );
|
||||
static_assert( check<A[], B[2]>() );
|
||||
static_assert( check<A[], B[]>() );
|
||||
|
||||
void
|
||||
test01()
|
||||
{
|
||||
std::shared_ptr<A[2]> p;
|
||||
VERIFY( p.get() == nullptr );
|
||||
VERIFY( p.use_count() == 0 );
|
||||
p.reset();
|
||||
VERIFY( count == 0 );
|
||||
}
|
||||
|
||||
void
|
||||
test02()
|
||||
{
|
||||
std::shared_ptr<A[]> p;
|
||||
VERIFY( p.get() == nullptr );
|
||||
VERIFY( p.use_count() == 0 );
|
||||
p.reset();
|
||||
VERIFY( count == 0 );
|
||||
}
|
||||
|
||||
void
|
||||
test03()
|
||||
{
|
||||
std::shared_ptr<A[2]> p(nullptr);
|
||||
VERIFY( p.get() == nullptr );
|
||||
VERIFY( p.use_count() == 0 );
|
||||
p.reset();
|
||||
VERIFY( count == 0 );
|
||||
}
|
||||
|
||||
void
|
||||
test04()
|
||||
{
|
||||
std::shared_ptr<A[]> p(nullptr);
|
||||
VERIFY( p.get() == nullptr );
|
||||
VERIFY( p.use_count() == 0 );
|
||||
p.reset();
|
||||
VERIFY( count == 0 );
|
||||
}
|
||||
|
||||
// Construction from pointer
|
||||
|
||||
void
|
||||
test05()
|
||||
{
|
||||
A * const a = nullptr;
|
||||
std::shared_ptr<A[2]> p(a);
|
||||
VERIFY( p.get() == nullptr );
|
||||
VERIFY( p.use_count() == 1 );
|
||||
p.reset();
|
||||
VERIFY( count == 0 );
|
||||
}
|
||||
|
||||
void
|
||||
test06()
|
||||
{
|
||||
A * const a = nullptr;
|
||||
std::shared_ptr<A[]> p(a);
|
||||
VERIFY( p.get() == nullptr );
|
||||
VERIFY( p.use_count() == 1 );
|
||||
p.reset();
|
||||
VERIFY( count == 0 );
|
||||
}
|
||||
|
||||
void
|
||||
test07()
|
||||
{
|
||||
A * const a = new A[2];
|
||||
std::shared_ptr<A[2]> p(a);
|
||||
VERIFY( p.get() == a );
|
||||
VERIFY( p.use_count() == 1 );
|
||||
p.reset();
|
||||
VERIFY( count == 0 );
|
||||
}
|
||||
|
||||
void
|
||||
test08()
|
||||
{
|
||||
A * const a = new A[2];
|
||||
std::shared_ptr<A[]> p(a);
|
||||
VERIFY( p.get() == a );
|
||||
VERIFY( p.use_count() == 1 );
|
||||
p.reset();
|
||||
VERIFY( count == 0 );
|
||||
}
|
||||
|
||||
// Converting constrcutor
|
||||
|
||||
void
|
||||
test09()
|
||||
{
|
||||
A * const a = new A[2];
|
||||
std::shared_ptr<A[2]> p(a);
|
||||
std::shared_ptr<const A[2]> p2(p);
|
||||
VERIFY( p2.get() == a );
|
||||
VERIFY( p.use_count() == 2 );
|
||||
VERIFY( p2.use_count() == 2 );
|
||||
p.reset();
|
||||
VERIFY( count != 0 );
|
||||
p2.reset();
|
||||
VERIFY( count == 0 );
|
||||
}
|
||||
|
||||
void
|
||||
test10()
|
||||
{
|
||||
A * const a = new A[2];
|
||||
std::shared_ptr<A[]> p(a);
|
||||
std::shared_ptr<const A[]> p2(p);
|
||||
VERIFY( p2.get() == a );
|
||||
VERIFY( p.use_count() == 2 );
|
||||
VERIFY( p2.use_count() == 2 );
|
||||
p.reset();
|
||||
VERIFY( count != 0 );
|
||||
p2.reset();
|
||||
VERIFY( count == 0 );
|
||||
}
|
||||
|
||||
void
|
||||
test11()
|
||||
{
|
||||
A * const a = new A[2];
|
||||
std::shared_ptr<A[2]> p(a);
|
||||
std::shared_ptr<const A[]> p2(p);
|
||||
VERIFY( p2.get() == a );
|
||||
VERIFY( p.use_count() == 2 );
|
||||
VERIFY( p2.use_count() == 2 );
|
||||
p.reset();
|
||||
VERIFY( count != 0 );
|
||||
p2.reset();
|
||||
VERIFY( count == 0 );
|
||||
}
|
||||
|
||||
// Copy construction
|
||||
|
||||
void
|
||||
test12()
|
||||
{
|
||||
A * const a = new A[2];
|
||||
std::shared_ptr<A[2]> p(a);
|
||||
std::shared_ptr<A[2]> p2(p);
|
||||
VERIFY( p2.get() == a );
|
||||
VERIFY( p.use_count() == 2 );
|
||||
VERIFY( p2.use_count() == 2 );
|
||||
p.reset();
|
||||
VERIFY( count != 0 );
|
||||
p2.reset();
|
||||
VERIFY( count == 0 );
|
||||
}
|
||||
|
||||
void
|
||||
test13()
|
||||
{
|
||||
A * const a = new A[2];
|
||||
std::shared_ptr<A[2]> p(a);
|
||||
std::shared_ptr<A[]> p2(p);
|
||||
VERIFY( p2.get() == a );
|
||||
VERIFY( p.use_count() == 2 );
|
||||
VERIFY( p2.use_count() == 2 );
|
||||
p.reset();
|
||||
VERIFY( count != 0 );
|
||||
p2.reset();
|
||||
VERIFY( count == 0 );
|
||||
}
|
||||
|
||||
// Move construction
|
||||
|
||||
void
|
||||
test14()
|
||||
{
|
||||
A * const a = new A[2];
|
||||
std::shared_ptr<A[2]> p(a);
|
||||
std::shared_ptr<A[2]> p2(std::move(p));
|
||||
VERIFY( p.get() == nullptr );
|
||||
VERIFY( p2.get() == a );
|
||||
VERIFY( p.use_count() == 0 );
|
||||
VERIFY( p2.use_count() == 1 );
|
||||
p2.reset();
|
||||
VERIFY( count == 0 );
|
||||
}
|
||||
|
||||
void
|
||||
test15()
|
||||
{
|
||||
A * const a = new A[2];
|
||||
std::shared_ptr<A[2]> p(a);
|
||||
std::shared_ptr<A[]> p2(std::move(p));
|
||||
VERIFY( p.get() == nullptr );
|
||||
VERIFY( p2.get() == a );
|
||||
VERIFY( p.use_count() == 0 );
|
||||
VERIFY( p2.use_count() == 1 );
|
||||
p2.reset();
|
||||
VERIFY( count == 0 );
|
||||
}
|
||||
|
||||
int
|
||||
main()
|
||||
{
|
||||
test01();
|
||||
test02();
|
||||
test03();
|
||||
test04();
|
||||
test05();
|
||||
test06();
|
||||
test07();
|
||||
test08();
|
||||
test09();
|
||||
test10();
|
||||
test11();
|
||||
test12();
|
||||
test13();
|
||||
test14();
|
||||
test15();
|
||||
}
|
||||
|
|
@ -22,6 +22,13 @@
|
|||
#include <memory>
|
||||
#include <testsuite_hooks.h>
|
||||
|
||||
#if __cpp_lib_shared_ptr_arrays >= 201603
|
||||
# define SHARED_PTR_ARRAYS
|
||||
#endif
|
||||
#if __cpp_lib_enable_shared_from_this >= 201603
|
||||
# define WEAK_FROM_THIS
|
||||
#endif
|
||||
|
||||
int destroyed = 0;
|
||||
|
||||
struct A : std::enable_shared_from_this<A>
|
||||
|
|
@ -36,12 +43,22 @@ int
|
|||
test01()
|
||||
{
|
||||
std::unique_ptr<A[]> up(new A[2]);
|
||||
#ifdef SHARED_PTR_ARRAYS
|
||||
std::shared_ptr<A[]> sp(std::move(up));
|
||||
#else
|
||||
std::shared_ptr<A> sp(std::move(up));
|
||||
#endif
|
||||
VERIFY( up.get() == 0 );
|
||||
VERIFY( sp.get() != 0 );
|
||||
VERIFY( sp.use_count() == 1 );
|
||||
|
||||
#ifdef SHARED_PTR_ARRAYS
|
||||
# ifdef WEAK_FROM_THIS
|
||||
VERIFY( sp[0].weak_from_this().expired() );
|
||||
# endif
|
||||
#else
|
||||
VERIFY( sp->shared_from_this() != nullptr );
|
||||
#endif
|
||||
|
||||
sp.reset();
|
||||
VERIFY( destroyed == 2 );
|
||||
|
|
|
|||
|
|
@ -0,0 +1,73 @@
|
|||
// { dg-do run { target c++11 } }
|
||||
|
||||
// Copyright (C) 2016 Free Software Foundation, Inc.
|
||||
//
|
||||
// This file is part of the GNU ISO C++ Library. This library is free
|
||||
// software; you can redistribute it and/or modify it under the
|
||||
// terms of the GNU General Public License as published by the
|
||||
// Free Software Foundation; either version 3, or (at your option)
|
||||
// any later version.
|
||||
|
||||
// This library is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU General Public License for more details.
|
||||
|
||||
// You should have received a copy of the GNU General Public License along
|
||||
// with this library; see the file COPYING3. If not see
|
||||
// <http://www.gnu.org/licenses/>.
|
||||
|
||||
#include <memory>
|
||||
#include <testsuite_hooks.h>
|
||||
|
||||
struct A
|
||||
{
|
||||
int i = 0;
|
||||
};
|
||||
|
||||
// C++1z 20.11.2.2.5 shared_ptr observers [util.smartptr.shared.obs]
|
||||
|
||||
// get
|
||||
void
|
||||
test01()
|
||||
{
|
||||
A * const a = new A[2];
|
||||
const std::shared_ptr<A[2]> p(a);
|
||||
VERIFY( p.get() == a );
|
||||
}
|
||||
|
||||
// get
|
||||
void
|
||||
test02()
|
||||
{
|
||||
A * const a = new A[2];
|
||||
const std::shared_ptr<A[]> p(a);
|
||||
VERIFY( p.get() == a );
|
||||
}
|
||||
|
||||
// operator[]
|
||||
void
|
||||
test03()
|
||||
{
|
||||
A * const a = new A[2];
|
||||
const std::shared_ptr<A[2]> p(a);
|
||||
VERIFY( &p[0] == a );
|
||||
}
|
||||
|
||||
// operator[]
|
||||
void
|
||||
test04()
|
||||
{
|
||||
A * const a = new A[2];
|
||||
const std::shared_ptr<A[]> p(a);
|
||||
VERIFY( &p[0] == a );
|
||||
}
|
||||
|
||||
int
|
||||
main()
|
||||
{
|
||||
test01();
|
||||
test02();
|
||||
test03();
|
||||
test04();
|
||||
}
|
||||
Loading…
Reference in New Issue