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author | Jörg Frings-Fürst <debian@jff.email> | 2024-03-06 10:24:11 +0100 |
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committer | Jörg Frings-Fürst <debian@jff.email> | 2024-03-06 10:24:11 +0100 |
commit | 4538829ab86b5a1cd4e845e7eab165029c9d6d46 (patch) | |
tree | bbadf39aed0610c8f8f7b41fefff47773b8ac205 /libcutl/cutl/shared-ptr/base.txx | |
parent | 23d41842168ac1a1580111b9c5c73500ceee3d57 (diff) | |
parent | aad5ad9bf0c02aa4e79bc6b7d6c934612fff4026 (diff) |
Update upstream source from tag 'upstream/4.2.0'
Update to upstream version '4.2.0'
with Debian dir 1b38df7bbcf313223de3c50107ac0255090fe647
Diffstat (limited to 'libcutl/cutl/shared-ptr/base.txx')
-rw-r--r-- | libcutl/cutl/shared-ptr/base.txx | 199 |
1 files changed, 0 insertions, 199 deletions
diff --git a/libcutl/cutl/shared-ptr/base.txx b/libcutl/cutl/shared-ptr/base.txx deleted file mode 100644 index 5096284..0000000 --- a/libcutl/cutl/shared-ptr/base.txx +++ /dev/null @@ -1,199 +0,0 @@ -// file : cutl/shared-ptr/base.txx -// copyright : Copyright (c) 2009-2013 Code Synthesis Tools CC -// license : MIT; see accompanying LICENSE file - -#include <cutl/meta/answer.hxx> -#include <cutl/meta/polymorphic-p.hxx> - -namespace cutl -{ - namespace bits - { - // Support for locating the counter in the memory block. - // - template <typename X, bool poly = meta::polymorphic_p<X>::r> - struct locator; - - template <typename X> - struct locator<X, false> - { - static std::size_t* - counter (X* x) - { - std::size_t* p (reinterpret_cast<std::size_t*> (x)); - - if (*(--p) != 0xDEADBEEF) - throw not_shared (); - - return --p; - } - }; - - template <typename X> - struct locator<X, true> - { - static std::size_t* - counter (X* x) - { - std::size_t* p ( - static_cast<std::size_t*> ( - dynamic_cast<void*> (x))); - - if (*(--p) != 0xDEADBEEF) - throw not_shared (); - - return --p; - } - }; - - template <typename X> - std::size_t* - counter (X const* p) - { - return bits::locator<X>::counter (const_cast<X*> (p)); - } - - // Counter type and operations. - // - meta::no test (...); - meta::yes test (shared_base*); - - template <typename X, - std::size_t A = sizeof (bits::test (reinterpret_cast<X*> (0)))> - struct counter_type; - - template <typename X> - struct counter_type<X, sizeof (meta::no)> - { - typedef X r; - }; - - template <typename X> - struct counter_type<X, sizeof (meta::yes)> - { - typedef shared_base r; - }; - - template <typename X, typename Y> - struct counter_ops; - - template <typename X> - struct counter_ops<X, X> - { - counter_ops (X const* p) : counter_ (p ? bits::counter (p) : 0) {} - counter_ops (counter_ops const& x) : counter_ (x.counter_) {} - - template <typename Z> - counter_ops (counter_ops<Z, Z> const& x) : counter_ (x.counter_) {} - - counter_ops& - operator= (counter_ops const& x) - { - counter_ = x.counter_; - return *this; - } - - template <typename Z> - counter_ops& - operator= (counter_ops<Z, Z> const& x) - { - counter_ = x.counter_; - return *this; - } - - void - reset (X const* p) - { - counter_ = p ? bits::counter (p) : 0; - } - - void - inc (X*) - { - (*counter_)++; - } - - void - dec (X* p) - { - if (--(*counter_) == 0) - { - p->~X (); - operator delete (counter_); // Counter is the top of the memory block. - } - } - - std::size_t - count (X const*) const - { - return *counter_; - } - - std::size_t* counter_; - }; - - template <typename Y> - struct counter_ops<shared_base, Y> - { - counter_ops (Y const*) {} - counter_ops (counter_ops const&) {} - - template <typename Z> - counter_ops (counter_ops<shared_base, Z> const&) {} - - counter_ops& - operator= (counter_ops const&) - { - return *this; - } - - template <typename Z> - counter_ops& - operator= (counter_ops<shared_base, Z> const&) - { - return *this; - } - - void - reset (Y const*) {} - - void - inc (shared_base* p) {p->_inc_ref ();} - - void - dec (Y* p) - { - if (static_cast<shared_base*> (p)->_dec_ref ()) - delete p; - } - - std::size_t - count (shared_base const* p) const {return p->_ref_count ();} - }; - } - - template <typename X> - inline X* - inc_ref (X* p) - { - bits::counter_ops<typename bits::counter_type<X>::r, X> c (p); - c.inc (p); - return p; - } - - template <typename X> - inline void - dec_ref (X* p) - { - bits::counter_ops<typename bits::counter_type<X>::r, X> c (p); - c.dec (p); - } - - template <typename X> - inline std::size_t - ref_count (X const* p) - { - bits::counter_ops<typename bits::counter_type<X>::r, X> c (p); - return c.count (p); - } -} |