diff options
Diffstat (limited to 'libcutl/cutl/shared-ptr')
-rw-r--r-- | libcutl/cutl/shared-ptr/base.cxx | 62 | ||||
-rw-r--r-- | libcutl/cutl/shared-ptr/base.hxx | 92 | ||||
-rw-r--r-- | libcutl/cutl/shared-ptr/base.ixx | 78 | ||||
-rw-r--r-- | libcutl/cutl/shared-ptr/base.txx | 199 |
4 files changed, 0 insertions, 431 deletions
diff --git a/libcutl/cutl/shared-ptr/base.cxx b/libcutl/cutl/shared-ptr/base.cxx deleted file mode 100644 index 1ff8469..0000000 --- a/libcutl/cutl/shared-ptr/base.cxx +++ /dev/null @@ -1,62 +0,0 @@ -// file : cutl/shared-ptr/base.cxx -// copyright : Copyright (c) 2009-2013 Code Synthesis Tools CC -// license : MIT; see accompanying LICENSE file - -#include <cutl/shared-ptr/base.hxx> - -using std::size_t; - -// -// -cutl::share shared = cutl::share (1); -cutl::share exclusive = cutl::share (2); - -// -// -namespace cutl -{ - char const* not_shared:: - what () const throw () - { - return "object is not shared"; - } -} - -// -// -void* -operator new (size_t n, cutl::share s) throw (std::bad_alloc) -{ - if (s == shared) - { - // Here we need to make sure we don't break the alignment of the - // returned block. For that we need to know the maximum alignment - // of this platform. Twice the pointer size is a good guess for - // most platforms. - // - size_t* p = static_cast<size_t*> (operator new (n + 2 * sizeof (size_t))); - *p++ = 1; // Initial count. - *p++ = 0xDEADBEEF; // Signature. - return p; - } - else - return operator new (n); - -} - -void -operator delete (void* p, cutl::share s) throw () -{ - // This version of operator delete is only called when the c-tor - // fails. In this case there is no object and we can just free the - // memory. - // - if (s == shared) - { - size_t* sp = static_cast<size_t*> (p); - sp -= 2; - operator delete (sp); - } - else - operator delete (p); -} diff --git a/libcutl/cutl/shared-ptr/base.hxx b/libcutl/cutl/shared-ptr/base.hxx deleted file mode 100644 index f2bfecc..0000000 --- a/libcutl/cutl/shared-ptr/base.hxx +++ /dev/null @@ -1,92 +0,0 @@ -// file : cutl/shared-ptr/base.hxx -// copyright : Copyright (c) 2009-2013 Code Synthesis Tools CC -// license : MIT; see accompanying LICENSE file - -#ifndef CUTL_SHARED_PTR_BASE_HXX -#define CUTL_SHARED_PTR_BASE_HXX - -#include <new> -#include <cstddef> // std::size_t - -#include <cutl/exception.hxx> - -#include <cutl/details/export.hxx> - -namespace cutl -{ - struct LIBCUTL_EXPORT share - { - explicit - share (char id); - - bool - operator== (share) const; - - private: - char id_; - }; -} - -extern LIBCUTL_EXPORT cutl::share shared; -extern LIBCUTL_EXPORT cutl::share exclusive; - -LIBCUTL_EXPORT void* -operator new (std::size_t, cutl::share) throw (std::bad_alloc); - -LIBCUTL_EXPORT void -operator delete (void*, cutl::share) throw (); - -namespace cutl -{ - struct LIBCUTL_EXPORT not_shared: exception - { - virtual char const* - what () const throw (); - }; - - struct LIBCUTL_EXPORT shared_base - { - shared_base (); - shared_base (shared_base const&); - shared_base& - operator= (shared_base const&); - - void - _inc_ref (); - - bool - _dec_ref (); - - std::size_t - _ref_count () const; - - void* - operator new (std::size_t, share) throw (std::bad_alloc); - - void - operator delete (void*, share) throw (); - - void - operator delete (void*) throw (); - - protected: - std::size_t counter_; - }; - - template <typename X> - inline X* - inc_ref (X*); - - template <typename X> - inline void - dec_ref (X*); - - template <typename X> - inline std::size_t - ref_count (X const*); -} - -#include <cutl/shared-ptr/base.ixx> -#include <cutl/shared-ptr/base.txx> - -#endif // CUTL_SHARED_PTR_BASE_HXX diff --git a/libcutl/cutl/shared-ptr/base.ixx b/libcutl/cutl/shared-ptr/base.ixx deleted file mode 100644 index 14dd0ac..0000000 --- a/libcutl/cutl/shared-ptr/base.ixx +++ /dev/null @@ -1,78 +0,0 @@ -// file : cutl/shared-ptr/base.ixx -// copyright : Copyright (c) 2009-2013 Code Synthesis Tools CC -// license : MIT; see accompanying LICENSE file - -namespace cutl -{ - // share - // - - inline share:: - share (char id) - : id_ (id) - { - } - - inline bool share:: - operator== (share x) const - { - return id_ == x.id_; - } - - // shared_base - // - - inline shared_base:: - shared_base () - : counter_ (1) - { - } - - inline shared_base:: - shared_base (shared_base const&) - : counter_ (1) - { - } - - inline shared_base& shared_base:: - operator= (shared_base const&) - { - return *this; - } - - inline void shared_base:: - _inc_ref () - { - counter_++; - } - - inline bool shared_base:: - _dec_ref () - { - return --counter_ == 0; - } - - inline std::size_t shared_base:: - _ref_count () const - { - return counter_; - } - - inline void* shared_base:: - operator new (std::size_t n, share) throw (std::bad_alloc) - { - return ::operator new (n); - } - - inline void shared_base:: - operator delete (void* p, share) throw () - { - ::operator delete (p); - } - - inline void shared_base:: - operator delete (void* p) throw () - { - ::operator delete (p); - } -} 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); - } -} |