forked from OctaForge/libostd
644 lines
20 KiB
C++
644 lines
20 KiB
C++
/* Memory utilities for OctaSTD.
|
|
*
|
|
* This file is part of OctaSTD. See COPYING.md for futher information.
|
|
*/
|
|
|
|
#ifndef OCTA_MEMORY_H
|
|
#define OCTA_MEMORY_H
|
|
|
|
#include <stddef.h>
|
|
|
|
#include "octa/new.h"
|
|
#include "octa/utility.h"
|
|
#include "octa/type_traits.h"
|
|
|
|
namespace octa {
|
|
/* address of */
|
|
|
|
template<typename _T> constexpr _T *address_of(_T &__v) {
|
|
return reinterpret_cast<_T *>(&const_cast<char &>
|
|
(reinterpret_cast<const volatile char &>(__v)));
|
|
}
|
|
|
|
/* pointer traits */
|
|
|
|
template<typename _T>
|
|
struct __OctaHasElementType {
|
|
template<typename _U>
|
|
static int __test(...);
|
|
template<typename _U>
|
|
static char __test(typename _U::ElementType * = 0);
|
|
|
|
static constexpr bool value = (sizeof(__test<_T>(0)) == 1);
|
|
};
|
|
|
|
template<typename _T, bool = __OctaHasElementType<_T>::value>
|
|
struct __OctaPtrTraitsElementType;
|
|
|
|
template<typename _T> struct __OctaPtrTraitsElementType<_T, true> {
|
|
typedef typename _T::ElementType Type;
|
|
};
|
|
|
|
template<template<typename, typename...> class _T, typename _U, typename ..._A>
|
|
struct __OctaPtrTraitsElementType<_T<_U, _A...>, true> {
|
|
typedef typename _T<_U, _A...>::ElementType Type;
|
|
};
|
|
|
|
template<template<typename, typename...> class _T, typename _U, typename ..._A>
|
|
struct __OctaPtrTraitsElementType<_T<_U, _A...>, false> {
|
|
typedef _U Type;
|
|
};
|
|
|
|
template<typename _T>
|
|
struct __OctaHasDiffType {
|
|
template<typename _U>
|
|
static int __test(...);
|
|
template<typename _U>
|
|
static char __test(typename _U::DiffType * = 0);
|
|
|
|
static constexpr bool value = (sizeof(__test<_T>(0)) == 1);
|
|
};
|
|
|
|
template<typename _T, bool = __OctaHasDiffType<_T>::value>
|
|
struct __OctaPtrTraitsDiffType {
|
|
typedef ptrdiff_t Type;
|
|
};
|
|
|
|
template<typename _T> struct __OctaPtrTraitsDiffType<_T, true> {
|
|
typedef typename _T::DiffType Type;
|
|
};
|
|
|
|
template<typename _T, typename _U>
|
|
struct __OctaHasRebind {
|
|
template<typename _V>
|
|
static int __test(...);
|
|
template<typename _V>
|
|
static char __test(typename _V::template rebind<_U> * = 0);
|
|
|
|
static constexpr bool value = (sizeof(__test<_T>(0)) == 1);
|
|
};
|
|
|
|
template<typename _T, typename _U, bool = __OctaHasRebind<_T, _U>::value>
|
|
struct __OctaPtrTraitsRebindType {
|
|
typedef typename _T::template rebind<_U> Type;
|
|
};
|
|
|
|
template<template<typename, typename...> class _T, typename _U,
|
|
typename ..._A, typename _V
|
|
>
|
|
struct __OctaPtrTraitsRebindType<_T<_U, _A...>, _V, true> {
|
|
typedef typename _T<_U, _A...>::template rebind<_V> Type;
|
|
};
|
|
|
|
template<template<typename, typename...> class _T, typename _U,
|
|
typename ..._A, typename _V
|
|
>
|
|
struct __OctaPtrTraitsRebindType<_T<_U, _A...>, _V, false> {
|
|
typedef _T<_V, _A...> Type;
|
|
};
|
|
|
|
template<typename _T>
|
|
struct __OctaPtrTraitsPointer {
|
|
typedef _T Type;
|
|
};
|
|
|
|
template<typename _T>
|
|
struct __OctaPtrTraitsPointer<_T *> {
|
|
typedef _T *Type;
|
|
};
|
|
|
|
template<typename _T>
|
|
using PtrType = typename __OctaPtrTraitsPointer<_T>::Type;
|
|
|
|
template<typename _T>
|
|
struct __OctaPtrTraitsElement {
|
|
typedef typename __OctaPtrTraitsElementType<_T>::Type Type;
|
|
};
|
|
|
|
template<typename _T>
|
|
struct __OctaPtrTraitsElement<_T *> {
|
|
typedef _T Type;
|
|
};
|
|
|
|
template<typename _T>
|
|
using PointerElement = typename __OctaPtrTraitsElement<_T>::Type;
|
|
|
|
template<typename _T>
|
|
struct __OctaPtrTraitsDifference {
|
|
typedef typename __OctaPtrTraitsDiffType<_T>::Type Type;
|
|
};
|
|
|
|
|
|
template<typename _T>
|
|
struct __OctaPtrTraitsDifference<_T *> {
|
|
typedef ptrdiff_t DiffType;
|
|
};
|
|
|
|
template<typename _T>
|
|
using PointerDifference = typename __OctaPtrTraitsDifference<_T>::Type;
|
|
|
|
template<typename _T, typename _U>
|
|
struct __OctaPtrTraitsRebind {
|
|
using type = typename __OctaPtrTraitsRebindType<_T, _U>::Type;
|
|
};
|
|
|
|
template<typename _T, typename _U>
|
|
struct __OctaPtrTraitsRebind<_T *, _U> {
|
|
using type = _U *;
|
|
};
|
|
|
|
template<typename _T, typename _U>
|
|
using PointerRebind = typename __OctaPtrTraitsRebind<_T, _U>::Type;
|
|
|
|
struct __OctaPtrTraitsNat {};
|
|
|
|
template<typename _T>
|
|
struct __OctaPtrTraitsPointerTo {
|
|
static _T pointer_to(octa::Conditional<
|
|
octa::IsVoid<PointerElement<_T>>::value,
|
|
__OctaPtrTraitsNat, PointerElement<_T>
|
|
> &__r) {
|
|
return _T::pointer_to(__r);
|
|
}
|
|
};
|
|
|
|
template<typename _T>
|
|
struct __OctaPtrTraitsPointerTo<_T *> {
|
|
static _T pointer_to(octa::Conditional<
|
|
octa::IsVoid<_T>::value, __OctaPtrTraitsNat, _T
|
|
> &__r) {
|
|
return octa::address_of(__r);
|
|
}
|
|
};
|
|
|
|
template<typename _T>
|
|
static _T pointer_to(octa::Conditional<
|
|
octa::IsVoid<PointerElement<_T>>::value,
|
|
__OctaPtrTraitsNat, PointerElement<_T>
|
|
> &__r) {
|
|
return __OctaPtrTraitsPointerTo<_T>::pointer_to(__r);
|
|
}
|
|
|
|
/* default deleter */
|
|
|
|
template<typename _T>
|
|
struct DefaultDelete {
|
|
constexpr DefaultDelete() = default;
|
|
|
|
template<typename _U> DefaultDelete(const DefaultDelete<_U> &) {};
|
|
|
|
void operator()(_T *__p) const {
|
|
delete __p;
|
|
}
|
|
};
|
|
|
|
template<typename _T>
|
|
struct DefaultDelete<_T[]> {
|
|
constexpr DefaultDelete() = default;
|
|
|
|
template<typename _U> DefaultDelete(const DefaultDelete<_U[]> &) {};
|
|
|
|
void operator()(_T *__p) const {
|
|
delete[] __p;
|
|
}
|
|
template<typename _U> void operator()(_U *) const = delete;
|
|
};
|
|
|
|
/* box */
|
|
|
|
template<typename _T, typename _U, bool = octa::IsEmpty<_U>::value>
|
|
struct __OctaBoxPair;
|
|
|
|
template<typename _T, typename _U>
|
|
struct __OctaBoxPair<_T, _U, false> { /* non-empty deleter */
|
|
_T *__ptr;
|
|
private:
|
|
_U __del;
|
|
|
|
public:
|
|
template<typename _D>
|
|
__OctaBoxPair(_T *__ptr, _D &&__dltr): __ptr(__ptr),
|
|
__del(octa::forward<_D>(__dltr)) {}
|
|
|
|
_U &get_deleter() { return __del; }
|
|
const _U &get_deleter() const { return __del; }
|
|
|
|
void swap(__OctaBoxPair &__v) {
|
|
octa::swap(__ptr, __v.__ptr);
|
|
octa::swap(__del, __v.__del);
|
|
}
|
|
};
|
|
|
|
template<typename _T, typename _U>
|
|
struct __OctaBoxPair<_T, _U, true>: _U { /* empty deleter */
|
|
_T *__ptr;
|
|
|
|
template<typename _D>
|
|
__OctaBoxPair(_T *__ptr, _D &&__dltr):
|
|
_U(octa::forward<_D>(__dltr)), __ptr(__ptr) {}
|
|
|
|
_U &get_deleter() { return *this; }
|
|
const _U &get_deleter() const { return *this; }
|
|
|
|
void swap(__OctaBoxPair &__v) {
|
|
octa::swap(__ptr, __v.__ptr);
|
|
}
|
|
};
|
|
|
|
template<typename _T>
|
|
static int __octa_ptr_test(...);
|
|
template<typename _T>
|
|
static char __octa_ptr_test(typename _T::PtrType * = 0);
|
|
|
|
template<typename _T> struct __OctaHasPtr: octa::IntegralConstant<bool,
|
|
(sizeof(__octa_ptr_test<_T>(0)) == 1)
|
|
> {};
|
|
|
|
template<typename _T, typename _D, bool = __OctaHasPtr<_D>::value>
|
|
struct __OctaPtrTypeBase {
|
|
typedef typename _D::PtrType Type;
|
|
};
|
|
|
|
template<typename _T, typename _D> struct __OctaPtrTypeBase<_T, _D, false> {
|
|
typedef _T *Type;
|
|
};
|
|
|
|
template<typename _T, typename _D> struct __OctaPtrType {
|
|
typedef typename __OctaPtrTypeBase<_T, octa::RemoveReference<_D>>::Type Type;
|
|
};
|
|
|
|
template<typename _T, typename _D = DefaultDelete<_T>>
|
|
struct Box {
|
|
typedef _T ElementType;
|
|
typedef _D DeleterType;
|
|
typedef typename __OctaPtrType<_T, _D>::Type PtrType;
|
|
|
|
private:
|
|
struct __OctaNat { int __x; };
|
|
|
|
typedef RemoveReference<_D> &_D_ref;
|
|
typedef const RemoveReference<_D> &_D_cref;
|
|
|
|
public:
|
|
constexpr Box(): __stor(nullptr, _D()) {
|
|
static_assert(!octa::IsPointer<_D>::value,
|
|
"Box constructed with null fptr deleter");
|
|
}
|
|
constexpr Box(nullptr_t): __stor(nullptr, _D()) {
|
|
static_assert(!octa::IsPointer<_D>::value,
|
|
"Box constructed with null fptr deleter");
|
|
}
|
|
|
|
explicit Box(PtrType __p): __stor(__p, _D()) {
|
|
static_assert(!octa::IsPointer<_D>::value,
|
|
"Box constructed with null fptr deleter");
|
|
}
|
|
|
|
Box(PtrType __p, octa::Conditional<octa::IsReference<_D>::value,
|
|
_D, octa::AddLvalueReference<const _D>
|
|
> __d): __stor(__p, __d) {}
|
|
|
|
Box(PtrType __p, octa::RemoveReference<_D> &&__d):
|
|
__stor(__p, octa::move(__d)) {
|
|
static_assert(!octa::IsReference<_D>::value,
|
|
"rvalue deleter cannot be a ref");
|
|
}
|
|
|
|
Box(Box &&__u): __stor(__u.release(),
|
|
octa::forward<_D>(__u.get_deleter())) {}
|
|
|
|
template<typename _TT, typename _DD>
|
|
Box(Box<_TT, _DD> &&__u, octa::EnableIf<!octa::IsArray<_TT>::value
|
|
&& octa::IsConvertible<typename Box<_TT, _DD>::PtrType, PtrType>::value
|
|
&& octa::IsConvertible<_DD, _D>::value
|
|
&& (!octa::IsReference<_D>::value || octa::IsSame<_D, _DD>::value)
|
|
> = __OctaNat()): __stor(__u.release(), octa::forward<_DD>(__u.get_deleter())) {}
|
|
|
|
Box &operator=(Box &&__u) {
|
|
reset(__u.release());
|
|
__stor.get_deleter() = octa::forward<_D>(__u.get_deleter());
|
|
return *this;
|
|
}
|
|
|
|
template<typename _TT, typename _DD>
|
|
EnableIf<!octa::IsArray<_TT>::value
|
|
&& octa::IsConvertible<typename Box<_TT, _DD>::PtrType, PtrType>::value
|
|
&& octa::IsAssignable<_D &, _DD &&>::value,
|
|
Box &
|
|
> operator=(Box<_TT, _DD> &&__u) {
|
|
reset(__u.release());
|
|
__stor.get_deleter() = octa::forward<_DD>(__u.get_deleter());
|
|
return *this;
|
|
}
|
|
|
|
Box &operator=(nullptr_t) {
|
|
reset();
|
|
return *this;
|
|
}
|
|
|
|
~Box() { reset(); }
|
|
|
|
octa::AddLvalueReference<_T> operator*() const { return *__stor.__ptr; }
|
|
PtrType operator->() const { return __stor.__ptr; }
|
|
|
|
explicit operator bool() const {
|
|
return __stor.__ptr != nullptr;
|
|
}
|
|
|
|
PtrType get() const { return __stor.__ptr; }
|
|
|
|
_D_ref get_deleter() { return __stor.get_deleter(); }
|
|
_D_cref get_deleter() const { return __stor.get_deleter(); }
|
|
|
|
PtrType release() {
|
|
PtrType __p = __stor.__ptr;
|
|
__stor.__ptr = nullptr;
|
|
return __p;
|
|
}
|
|
|
|
void reset(PtrType __p = nullptr) {
|
|
PtrType __tmp = __stor.__ptr;
|
|
__stor.__ptr = __p;
|
|
if (__tmp) __stor.get_deleter()(__tmp);
|
|
}
|
|
|
|
void swap(Box &__u) {
|
|
__stor.swap(__u.__stor);
|
|
}
|
|
|
|
private:
|
|
__OctaBoxPair<_T, _D> __stor;
|
|
};
|
|
|
|
template<typename _T, typename _U, bool = octa::IsSame<
|
|
octa::RemoveCv<PointerElement<_T>>,
|
|
octa::RemoveCv<PointerElement<_U>>
|
|
>::value> struct __OctaSameOrLessCvQualifiedBase: octa::IsConvertible<_T, _U> {};
|
|
|
|
template<typename _T, typename _U>
|
|
struct __OctaSameOrLessCvQualifiedBase<_T, _U, false>: octa::False {};
|
|
|
|
template<typename _T, typename _U, bool = octa::IsPointer<_T>::value
|
|
|| octa::IsSame<_T, _U>::value || __OctaHasElementType<_T>::value
|
|
> struct __OctaSameOrLessCvQualified: __OctaSameOrLessCvQualifiedBase<_T, _U> {};
|
|
|
|
template<typename _T, typename _U>
|
|
struct __OctaSameOrLessCvQualified<_T, _U, false>: octa::False {};
|
|
|
|
template<typename _T, typename _D>
|
|
struct Box<_T[], _D> {
|
|
typedef _T ElementType;
|
|
typedef _D DeleterType;
|
|
typedef typename __OctaPtrType<_T, _D>::Type PtrType;
|
|
|
|
private:
|
|
struct __OctaNat { int __x; };
|
|
|
|
typedef RemoveReference<_D> &_D_ref;
|
|
typedef const RemoveReference<_D> &_D_cref;
|
|
|
|
public:
|
|
constexpr Box(): __stor(nullptr, _D()) {
|
|
static_assert(!octa::IsPointer<_D>::value,
|
|
"Box constructed with null fptr deleter");
|
|
}
|
|
constexpr Box(nullptr_t): __stor(nullptr, _D()) {
|
|
static_assert(!octa::IsPointer<_D>::value,
|
|
"Box constructed with null fptr deleter");
|
|
}
|
|
|
|
template<typename _U> explicit Box(_U __p, octa::EnableIf<
|
|
__OctaSameOrLessCvQualified<_U, PtrType>::value, __OctaNat
|
|
> = __OctaNat()): __stor(__p, _D()) {
|
|
static_assert(!octa::IsPointer<_D>::value,
|
|
"Box constructed with null fptr deleter");
|
|
}
|
|
|
|
template<typename _U> Box(_U __p, octa::Conditional<
|
|
octa::IsReference<_D>::value,
|
|
_D, AddLvalueReference<const _D>
|
|
> __d, octa::EnableIf<__OctaSameOrLessCvQualified<_U, PtrType>::value,
|
|
__OctaNat> = __OctaNat()): __stor(__p, __d) {}
|
|
|
|
Box(nullptr_t, octa::Conditional<octa::IsReference<_D>::value,
|
|
_D, AddLvalueReference<const _D>
|
|
> __d): __stor(nullptr, __d) {}
|
|
|
|
template<typename _U> Box(_U __p, octa::RemoveReference<_D> &&__d,
|
|
octa::EnableIf<
|
|
__OctaSameOrLessCvQualified<_U, PtrType>::value, __OctaNat
|
|
> = __OctaNat()): __stor(__p, octa::move(__d)) {
|
|
static_assert(!octa::IsReference<_D>::value,
|
|
"rvalue deleter cannot be a ref");
|
|
}
|
|
|
|
Box(nullptr_t, octa::RemoveReference<_D> &&__d):
|
|
__stor(nullptr, octa::move(__d)) {
|
|
static_assert(!octa::IsReference<_D>::value,
|
|
"rvalue deleter cannot be a ref");
|
|
}
|
|
|
|
Box(Box &&__u): __stor(__u.release(),
|
|
octa::forward<_D>(__u.get_deleter())) {}
|
|
|
|
template<typename _TT, typename _DD>
|
|
Box(Box<_TT, _DD> &&__u, EnableIf<IsArray<_TT>::value
|
|
&& __OctaSameOrLessCvQualified<typename Box<_TT, _DD>::PtrType,
|
|
PtrType>::value
|
|
&& octa::IsConvertible<_DD, _D>::value
|
|
&& (!octa::IsReference<_D>::value ||
|
|
octa::IsSame<_D, _DD>::value)> = __OctaNat()
|
|
): __stor(__u.release(), octa::forward<_DD>(__u.get_deleter())) {}
|
|
|
|
Box &operator=(Box &&__u) {
|
|
reset(__u.release());
|
|
__stor.get_deleter() = octa::forward<_D>(__u.get_deleter());
|
|
return *this;
|
|
}
|
|
|
|
template<typename _TT, typename _DD>
|
|
EnableIf<octa::IsArray<_TT>::value
|
|
&& __OctaSameOrLessCvQualified<typename Box<_TT, _DD>::PtrType,
|
|
PtrType>::value
|
|
&& IsAssignable<_D &, _DD &&>::value,
|
|
Box &
|
|
> operator=(Box<_TT, _DD> &&__u) {
|
|
reset(__u.release());
|
|
__stor.get_deleter() = octa::forward<_DD>(__u.get_deleter());
|
|
return *this;
|
|
}
|
|
|
|
Box &operator=(nullptr_t) {
|
|
reset();
|
|
return *this;
|
|
}
|
|
|
|
~Box() { reset(); }
|
|
|
|
octa::AddLvalueReference<_T> operator[](size_t __idx) const {
|
|
return __stor.__ptr[__idx];
|
|
}
|
|
|
|
explicit operator bool() const {
|
|
return __stor.__ptr != nullptr;
|
|
}
|
|
|
|
PtrType get() const { return __stor.__ptr; }
|
|
|
|
_D_ref get_deleter() { return __stor.get_deleter(); }
|
|
_D_cref get_deleter() const { return __stor.get_deleter(); }
|
|
|
|
PtrType release() {
|
|
PtrType __p = __stor.__ptr;
|
|
__stor.__ptr = nullptr;
|
|
return __p;
|
|
}
|
|
|
|
template<typename _U> EnableIf<
|
|
__OctaSameOrLessCvQualified<_U, PtrType>::value, void
|
|
> reset(_U __p) {
|
|
PtrType __tmp = __stor.__ptr;
|
|
__stor.__ptr = __p;
|
|
if (__tmp) __stor.get_deleter()(__tmp);
|
|
}
|
|
|
|
void reset(nullptr_t) {
|
|
PtrType __tmp = __stor.__ptr;
|
|
__stor.__ptr = nullptr;
|
|
if (__tmp) __stor.get_deleter()(__tmp);
|
|
}
|
|
|
|
void reset() {
|
|
reset(nullptr);
|
|
}
|
|
|
|
void swap(Box &__u) {
|
|
__stor.swap(__u.__stor);
|
|
}
|
|
|
|
private:
|
|
__OctaBoxPair<_T, _D> __stor;
|
|
};
|
|
|
|
template<typename _T> struct __OctaBoxIf {
|
|
typedef Box<_T> __OctaBox;
|
|
};
|
|
|
|
template<typename _T> struct __OctaBoxIf<_T[]> {
|
|
typedef Box<_T[]> __OctaBoxUnknownSize;
|
|
};
|
|
|
|
template<typename _T, size_t _N> struct __OctaBoxIf<_T[_N]> {
|
|
typedef void __OctaBoxKnownSize;
|
|
};
|
|
|
|
template<typename _T, typename ..._A>
|
|
typename __OctaBoxIf<_T>::__OctaBox make_box(_A &&...__args) {
|
|
return Box<_T>(new _T(octa::forward<_A>(__args)...));
|
|
}
|
|
|
|
template<typename _T>
|
|
typename __OctaBoxIf<_T>::__OctaBoxUnknownSize make_box(size_t __n) {
|
|
return Box<_T>(new octa::RemoveExtent<_T>[__n]());
|
|
}
|
|
|
|
template<typename _T, typename ..._A>
|
|
typename __OctaBoxIf<_T>::__OctaBoxKnownSize make_box(_A &&...__args) = delete;
|
|
|
|
/* allocator */
|
|
|
|
template<typename> struct Allocator;
|
|
|
|
template<> struct Allocator<void> {
|
|
typedef void ValType;
|
|
typedef void *PtrType;
|
|
typedef const void *ConstPtrType;
|
|
|
|
template<typename _U> using Rebind = Allocator<_U>;
|
|
};
|
|
|
|
template<> struct Allocator<const void> {
|
|
typedef const void ValType;
|
|
typedef const void *PtrType;
|
|
typedef const void *ConstPtrType;
|
|
|
|
template<typename _U> using Rebind = Allocator<_U>;
|
|
};
|
|
|
|
template<typename _T> struct Allocator {
|
|
typedef size_t SizeType;
|
|
typedef ptrdiff_t DiffType;
|
|
typedef _T ValType;
|
|
typedef _T &RefType;
|
|
typedef const _T &ConstRefType;
|
|
typedef _T *PtrType;
|
|
typedef const _T *ConstPtrType;
|
|
|
|
template<typename _U> using Rebind = Allocator<_U>;
|
|
|
|
PtrType address(RefType __v) const {
|
|
return address_of(__v);
|
|
};
|
|
ConstPtrType address(ConstRefType __v) const {
|
|
return address_of(__v);
|
|
};
|
|
|
|
SizeType max_size() const { return SizeType(~0) / sizeof(_T); }
|
|
|
|
PtrType allocate(SizeType __n, Allocator<void>::ConstPtrType = nullptr) {
|
|
return (PtrType) ::new uchar[__n * sizeof(_T)];
|
|
}
|
|
|
|
void deallocate(PtrType __p, SizeType) { ::delete[] (uchar *) __p; }
|
|
|
|
template<typename _U, typename ..._A>
|
|
void construct(_U *__p, _A &&...__args) {
|
|
::new((void *)__p) _U(octa::forward<_A>(__args)...);
|
|
}
|
|
|
|
void destroy(PtrType __p) { __p->~_T(); }
|
|
};
|
|
|
|
template<typename _T> struct Allocator<const _T> {
|
|
typedef size_t SizeType;
|
|
typedef ptrdiff_t DiffType;
|
|
typedef const _T ValType;
|
|
typedef const _T &RefType;
|
|
typedef const _T &ConstRefType;
|
|
typedef const _T *PtrType;
|
|
typedef const _T *ConstPtrType;
|
|
|
|
template<typename _U> using Rebind = Allocator<_U>;
|
|
|
|
ConstPtrType address(ConstRefType __v) const {
|
|
return address_of(__v);
|
|
};
|
|
|
|
SizeType max_size() const { return SizeType(~0) / sizeof(_T); }
|
|
|
|
PtrType allocate(SizeType __n, Allocator<void>::ConstPtrType = nullptr) {
|
|
return (PtrType) ::new uchar[__n * sizeof(_T)];
|
|
}
|
|
|
|
void deallocate(PtrType __p, SizeType) { ::delete[] (uchar *) __p; }
|
|
|
|
template<typename _U, typename ..._A>
|
|
void construct(_U *__p, _A &&...__args) {
|
|
::new((void *)__p) _U(octa::forward<_A>(__args)...);
|
|
}
|
|
|
|
void destroy(PtrType __p) { __p->~_T(); }
|
|
};
|
|
|
|
template<typename _T, typename _U>
|
|
bool operator==(const Allocator<_T> &, const Allocator<_U> &) {
|
|
return true;
|
|
}
|
|
|
|
template<typename _T, typename _U>
|
|
bool operator!=(const Allocator<_T> &, const Allocator<_U> &) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
#endif |