#include <tr1/unordered_map>
#include <bits/move.h>
#include <ext/pointer.h>
+#include <ext/alloc_traits.h>
#include <testsuite_hooks.h>
namespace __gnu_test
public:
typedef std::size_t size_type;
- static void*
+ static void
allocate(size_type blocksize)
- {
- void* p = ::operator new(blocksize);
- allocationCount_ += blocksize;
- return p;
- }
+ { allocationCount_ += blocksize; }
static void
- construct() { constructCount_++; }
+ construct() { ++constructCount_; }
static void
- destroy() { destructCount_++; }
+ destroy() { ++destructCount_; }
static void
- deallocate(void* p, size_type blocksize)
- {
- ::operator delete(p);
- deallocationCount_ += blocksize;
- }
+ deallocate(size_type blocksize)
+ { deallocationCount_ += blocksize; }
static size_type
get_allocation_count() { return allocationCount_; }
static int destructCount_;
};
- // A simple basic allocator that just forwards to the
- // tracker_allocator_counter to fulfill memory requests. This class
- // is templated on the target object type, but tracker isn't.
- template<class T>
- class tracker_allocator
- {
- private:
- typedef tracker_allocator_counter counter_type;
+ // Helper to detect inconsistency between type used to instantiate an
+ // allocator and the underlying allocator value_type.
+ template<typename T, typename Alloc,
+ typename = typename Alloc::value_type>
+ struct check_consistent_alloc_value_type;
+
+ template<typename T, typename Alloc>
+ struct check_consistent_alloc_value_type<T, Alloc, T>
+ { typedef T value_type; };
+
+ // An allocator facade that intercepts allocate/deallocate/construct/detroy
+ // calls and track them through the tracker_allocator_counter class. This
+ // class is templated on the target object type, but tracker isn't.
+ template<typename T, typename Alloc = std::allocator<T> >
+ class tracker_allocator : public Alloc
+ {
+ private:
+ typedef tracker_allocator_counter counter_type;
- public:
- typedef T value_type;
- typedef T* pointer;
- typedef const T* const_pointer;
- typedef T& reference;
- typedef const T& const_reference;
- typedef std::size_t size_type;
- typedef std::ptrdiff_t difference_type;
+ typedef __gnu_cxx::__alloc_traits<Alloc> AllocTraits;
+
+ public:
+ typedef typename
+ check_consistent_alloc_value_type<T, Alloc>::value_type value_type;
+ typedef typename AllocTraits::pointer pointer;
+ typedef typename AllocTraits::size_type size_type;
- template<class U> struct rebind { typedef tracker_allocator<U> other; };
+ template<class U>
+ struct rebind
+ {
+ typedef tracker_allocator<U,
+ typename AllocTraits::template rebind<U>::other> other;
+ };
- pointer
- address(reference value) const _GLIBCXX_NOEXCEPT
- { return std::__addressof(value); }
-
- const_pointer
- address(const_reference value) const _GLIBCXX_NOEXCEPT
- { return std::__addressof(value); }
-
- tracker_allocator() _GLIBCXX_USE_NOEXCEPT
- { }
-
- tracker_allocator(const tracker_allocator&) _GLIBCXX_USE_NOEXCEPT
- { }
+#if __cplusplus >= 201103L
+ tracker_allocator() = default;
+ tracker_allocator(const tracker_allocator&) = default;
+ tracker_allocator(tracker_allocator&&) = default;
+
+ // Perfect forwarding constructor.
+ template<typename... _Args>
+ tracker_allocator(_Args&&... __args)
+ : Alloc(std::forward<_Args>(__args)...)
+ { }
+#else
+ tracker_allocator()
+ { }
- template<class U>
- tracker_allocator(const tracker_allocator<U>&) _GLIBCXX_USE_NOEXCEPT
+ tracker_allocator(const tracker_allocator&)
{ }
- ~tracker_allocator() _GLIBCXX_USE_NOEXCEPT
- { }
+ ~tracker_allocator()
+ { }
+#endif
- size_type
- max_size() const _GLIBCXX_USE_NOEXCEPT
- { return size_type(-1) / sizeof(T); }
+ template<class U>
+ tracker_allocator(const tracker_allocator<U,
+ typename AllocTraits::template rebind<U>::other>& alloc)
+ _GLIBCXX_USE_NOEXCEPT
+ : Alloc(alloc)
+ { }
- pointer
- allocate(size_type n, const void* = 0)
- { return static_cast<pointer>(counter_type::allocate(n * sizeof(T))); }
+ pointer
+ allocate(size_type n, const void* = 0)
+ {
+ pointer p = AllocTraits::allocate(*this, n);
+ counter_type::allocate(n * sizeof(T));
+ return p;
+ }
#if __cplusplus >= 201103L
- template<typename U, typename... Args>
+ template<typename U, typename... Args>
+ void
+ construct(U* p, Args&&... args)
+ {
+ AllocTraits::construct(*this, p, std::forward<Args>(args)...);
+ counter_type::construct();
+ }
+
+ template<typename U>
+ void
+ destroy(U* p)
+ {
+ AllocTraits::destroy(*this, p);
+ counter_type::destroy();
+ }
+#else
void
- construct(U* p, Args&&... args)
+ construct(pointer p, const T& value)
{
- ::new((void *)p) U(std::forward<Args>(args)...);
+ AllocTraits::construct(*this, p, value);
counter_type::construct();
}
- template<typename U>
void
- destroy(U* p)
+ destroy(pointer p)
{
- p->~U();
+ AllocTraits::destroy(*this, p);
counter_type::destroy();
}
-#else
- void
- construct(pointer p, const T& value)
- {
- ::new ((void *)p) T(value);
- counter_type::construct();
- }
-
- void
- destroy(pointer p)
- {
- p->~T();
- counter_type::destroy();
- }
#endif
- void
- deallocate(pointer p, size_type num)
- { counter_type::deallocate(p, num * sizeof(T)); }
- };
+ void
+ deallocate(pointer p, size_type num)
+ {
+ counter_type::deallocate(num * sizeof(T));
+ AllocTraits::deallocate(*this, p, num);
+ }
+
+ // Implement swap for underlying allocators that might need it.
+ friend inline void
+ swap(tracker_allocator& a, tracker_allocator& b)
+ {
+ using std::swap;
+
+ Alloc& aa = a;
+ Alloc& ab = b;
+ swap(aa, ab);
+ }
+ };
- template<class T1, class T2>
+ template<class T1, class Alloc1, class T2, class Alloc2>
bool
- operator==(const tracker_allocator<T1>&,
- const tracker_allocator<T2>&) throw()
- { return true; }
+ operator==(const tracker_allocator<T1, Alloc1>& lhs,
+ const tracker_allocator<T2, Alloc2>& rhs) throw()
+ {
+ const Alloc1& alloc1 = lhs;
+ const Alloc2& alloc2 = rhs;
+ return lhs == rhs;
+ }
- template<class T1, class T2>
+ template<class T1, class Alloc1, class T2, class Alloc2>
bool
- operator!=(const tracker_allocator<T1>&,
- const tracker_allocator<T2>&) throw()
- { return false; }
+ operator!=(const tracker_allocator<T1, Alloc1>& lhs,
+ const tracker_allocator<T2, Alloc2>& rhs) throw()
+ { return !(lhs == rhs); }
bool
check_construct_destroy(const char* tag, int expected_c, int expected_d);
check_deallocate_null()
{
// Let's not core here...
- Alloc a;
+ Alloc a;
a.deallocate(0, 1);
a.deallocate(0, 10);
return true;
throw;
}
-
// A simple allocator which can be constructed endowed of a given
// "personality" (an integer), queried in operator== to simulate the
// behavior of realworld "unequal" allocators (i.e., not exploiting
// filled at allocation time with (pointer, personality) pairs, is
// then consulted to enforce the requirements in Table 32 about
// deallocation vs allocator equality. Note that this allocator is
- // swappable, not assignable, consistently with Option 3 of DR 431
+ // swappable, not copy assignable, consistently with Option 3 of DR 431
// (see N1599).
struct uneq_allocator_base
{
}
};
- template<typename Tp>
+ template<typename Tp, typename Alloc = std::allocator<Tp> >
class uneq_allocator
- : private uneq_allocator_base
+ : private uneq_allocator_base,
+ public Alloc
{
+ typedef __gnu_cxx::__alloc_traits<Alloc> AllocTraits;
+
+ Alloc& base() { return *this; }
+ const Alloc& base() const { return *this; }
+ void swap_base(Alloc& b) { swap(b, this->base()); }
+
public:
- typedef std::size_t size_type;
- typedef std::ptrdiff_t difference_type;
- typedef Tp* pointer;
- typedef const Tp* const_pointer;
- typedef Tp& reference;
- typedef const Tp& const_reference;
- typedef Tp value_type;
+ typedef typename check_consistent_alloc_value_type<Tp, Alloc>::value_type
+ value_type;
+ typedef typename AllocTraits::size_type size_type;
+ typedef typename AllocTraits::pointer pointer;
#if __cplusplus >= 201103L
- typedef std::true_type propagate_on_container_swap;
+ typedef std::true_type propagate_on_container_swap;
#endif
template<typename Tp1>
- struct rebind
- { typedef uneq_allocator<Tp1> other; };
+ struct rebind
+ {
+ typedef uneq_allocator<Tp1,
+ typename AllocTraits::template rebind<Tp1>::other> other;
+ };
uneq_allocator() _GLIBCXX_USE_NOEXCEPT
: personality(0) { }
: personality(person) { }
template<typename Tp1>
- uneq_allocator(const uneq_allocator<Tp1>& b) _GLIBCXX_USE_NOEXCEPT
+ uneq_allocator(const uneq_allocator<Tp1,
+ typename AllocTraits::template rebind<Tp1>::other>& b)
+ _GLIBCXX_USE_NOEXCEPT
: personality(b.get_personality()) { }
~uneq_allocator() _GLIBCXX_USE_NOEXCEPT
int get_personality() const { return personality; }
pointer
- address(reference x) const _GLIBCXX_NOEXCEPT
- { return std::__addressof(x); }
-
- const_pointer
- address(const_reference x) const _GLIBCXX_NOEXCEPT
- { return std::__addressof(x); }
-
- pointer
- allocate(size_type n, const void* = 0)
+ allocate(size_type n, const void* hint = 0)
{
- if (__builtin_expect(n > this->max_size(), false))
- std::__throw_bad_alloc();
-
- pointer p = static_cast<Tp*>(::operator new(n * sizeof(Tp)));
+ pointer p = AllocTraits::allocate(*this, n);
try
{
get_map().insert(map_type::value_type(reinterpret_cast<void*>(p),
}
catch(...)
{
- ::operator delete(p);
+ AllocTraits::deallocate(*this, p, n);
__throw_exception_again;
}
return p;
}
void
- deallocate(pointer p, size_type)
+ deallocate(pointer p, size_type n)
{
bool test __attribute__((unused)) = true;
VERIFY( it->second == personality );
get_map().erase(it);
- ::operator delete(p);
+ AllocTraits::deallocate(*this, p, n);
}
- size_type
- max_size() const _GLIBCXX_USE_NOEXCEPT
- { return size_type(-1) / sizeof(Tp); }
-
#if __cplusplus >= 201103L
- template<typename U, typename... Args>
- void
- construct(U* p, Args&&... args)
- { ::new((void *)p) U(std::forward<Args>(args)...); }
-
- template<typename U>
- void
- destroy(U* p) { p->~U(); }
-
// Not copy assignable...
uneq_allocator&
operator=(const uneq_allocator&) = delete;
-#else
- void
- construct(pointer p, const Tp& val)
- { ::new((void *)p) Tp(val); }
-
- void
- destroy(pointer p) { p->~Tp(); }
+ // ... but still moveable if base allocator is.
+ uneq_allocator&
+ operator=(uneq_allocator&&) = default;
+#else
private:
// Not assignable...
uneq_allocator&
#endif
private:
-
// ... yet swappable!
friend inline void
swap(uneq_allocator& a, uneq_allocator& b)
- { std::swap(a.personality, b.personality); }
-
+ {
+ std::swap(a.personality, b.personality);
+ a.swap_base(b);
+ }
+
template<typename Tp1>
- friend inline bool
- operator==(const uneq_allocator& a, const uneq_allocator<Tp1>& b)
- { return a.personality == b.personality; }
+ friend inline bool
+ operator==(const uneq_allocator& a,
+ const uneq_allocator<Tp1,
+ typename AllocTraits::template rebind<Tp1>::other>& b)
+ { return a.personality == b.personality; }
template<typename Tp1>
- friend inline bool
- operator!=(const uneq_allocator& a, const uneq_allocator<Tp1>& b)
- { return !(a == b); }
+ friend inline bool
+ operator!=(const uneq_allocator& a,
+ const uneq_allocator<Tp1,
+ typename AllocTraits::template rebind<Tp1>::other>& b)
+ { return !(a == b); }
int personality;
};
#if __cplusplus >= 201103L
// An uneq_allocator which can be used to test allocator propagation.
- template<typename Tp, bool Propagate>
- class propagating_allocator : public uneq_allocator<Tp>
+ template<typename Tp, bool Propagate, typename Alloc = std::allocator<Tp>>
+ class propagating_allocator : public uneq_allocator<Tp, Alloc>
{
- typedef uneq_allocator<Tp> base_alloc;
+ typedef __gnu_cxx::__alloc_traits<Alloc> AllocTraits;
+
+ typedef uneq_allocator<Tp, Alloc> base_alloc;
base_alloc& base() { return *this; }
const base_alloc& base() const { return *this; }
void swap_base(base_alloc& b) { swap(b, this->base()); }
// default allocator_traits::rebind_alloc would select
// uneq_allocator::rebind so we must define rebind here
template<typename Up>
- struct rebind { typedef propagating_allocator<Up, Propagate> other; };
+ struct rebind
+ {
+ typedef propagating_allocator<Up, Propagate,
+ typename AllocTraits::template rebind<Up>::other> other;
+ };
propagating_allocator(int i) noexcept
: base_alloc(i)
{ }
template<typename Up>
- propagating_allocator(const propagating_allocator<Up, Propagate>& a)
- noexcept
+ propagating_allocator(const propagating_allocator<Up, Propagate,
+ typename AllocTraits::template rebind<Up>::other>& a)
+ noexcept
: base_alloc(a)
{ }
}
template<bool P2>
- propagating_allocator&
- operator=(const propagating_allocator<Tp, P2>& a) noexcept
+ propagating_allocator&
+ operator=(const propagating_allocator<Tp, P2, Alloc>& a) noexcept
{
static_assert(P2, "assigning propagating_allocator<T, true>");
propagating_allocator(a).swap_base(*this);
projects / thirdparty / gcc.git / commitdiff
