Standard library header - cppreference.com (original) (raw)

This header is part of the dynamic memory management library, in particular provides low level memory management features.

[edit] Synopsis

// all freestanding namespace std { // storage allocation errors class bad_alloc; class bad_array_new_length;   struct destroying_delete_t { explicit destroying_delete_t() = default; }; inline constexpr destroying_delete_t destroying_delete{};   // global operator new control enum class align_val_t : size_t { };   struct nothrow_t { explicit nothrow_t() = default; }; extern const nothrow_t nothrow;   using new_handler = void ()(); new_handler get_new_handler() noexcept; new_handler set_new_handler(new_handler new_p) noexcept;   // pointer optimization barrier template constexpr T launder(T* p) noexcept;   // hardware interference size inline constexpr size_t hardware_destructive_interference_size = /* implementation-defined /; inline constexpr size_t hardware_constructive_interference_size = / implementation-defined /; }   // storage allocation and deallocation void operator new(std::size_t size); void* operator new(std::size_t size, std::align_val_t alignment); void* operator new(std::size_t size, const std::nothrow_t&) noexcept; void* operator new(std::size_t size, std::align_val_t alignment, const std::nothrow_t&) noexcept;   void operator delete(void* ptr) noexcept; void operator delete(void* ptr, std::size_t size) noexcept; void operator delete(void* ptr, std::align_val_t alignment) noexcept; void operator delete(void* ptr, std::size_t size, std::align_val_t alignment) noexcept; void operator delete(void* ptr, const std::nothrow_t&) noexcept; void operator delete(void* ptr, std::align_val_t alignment, const std::nothrow_t&) noexcept;   void* operator new size); void* operator new size, std::align_val_t alignment); void* operator new size, const std::nothrow_t&) noexcept; void* operator new size, std::align_val_t alignment, const std::nothrow_t&) noexcept;   void operator delete[](void* ptr) noexcept; void operator delete[](void* ptr, std::size_t size) noexcept; void operator delete[](void* ptr, std::align_val_t alignment) noexcept; void operator delete[](void* ptr, std::size_t size, std::align_val_t alignment) noexcept; void operator delete[](void* ptr, const std::nothrow_t&) noexcept; void operator delete[](void* ptr, std::align_val_t alignment, const std::nothrow_t&) noexcept;   constexpr void* operator new(std::size_t size, void* ptr) noexcept; constexpr void* operator new size, void* ptr) noexcept; void operator delete(void* ptr, void*) noexcept; void operator delete[](void* ptr, void*) noexcept;

[edit] Class std::bad_alloc

namespace std { class bad_alloc : public exception { public: // see description for the specification of the special member functions constexpr const char* what() const noexcept override; }; }

[edit] Class std::bad_array_new_length

namespace std { class bad_array_new_length : public bad_alloc { public: // see description for the specification of the special member functions constexpr const char* what() const noexcept override; }; }