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40 lines
1.1 KiB
C
40 lines
1.1 KiB
C
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#ifndef ASYNC_MQTT5_MEMORY_H
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#define ASYNC_MQTT5_MEMORY_H
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#include "memory_resource.h"
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namespace pma {
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template <typename T>
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class alloc : public polymorphic_allocator<T> {
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using base = polymorphic_allocator<T>;
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public:
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alloc(pma::memory_resource* r) noexcept : base(r) {}
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template <class T2>
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alloc(const alloc<T2>& other) noexcept : base(other.resource()) {}
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using value_type = typename base::value_type;
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using pointer = typename base::value_type*;
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using const_pointer = const typename base::value_type*;
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using reference = typename base::value_type&;
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using const_reference = const typename base::value_type&;
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using size_type = std::size_t;
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using difference_type = std::ptrdiff_t;
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// https://stackoverflow.com/questions/27471053/example-usage-of-propagate-on-container-move-assignment
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using propagate_on_container_copy_assignment = std::false_type;
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using propagate_on_container_move_assignment = std::false_type;
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using propagate_on_container_swap = std::false_type;
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alloc select_on_container_copy_construction() const noexcept {
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return alloc(base::resource());
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}
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};
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} // end namespace pma
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#endif // !ASYNC_MQTT5_MEMORY_H
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