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Difference between revisions of "c++/std/new"
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Revision as of 17:17, 2 December 2013
The header <new> defines several functions that can be used to manage dynamic storage in C++. This header provides a relatively low-level memory facilities. In addition to declaring a set of functions within the std namespace, several other functions are defined within the global namespace.
Functions
| Function | Description | Since |
|---|---|---|
| operator new | allocation functions | C++98 |
| operator new[] | C++98 | |
| operator delete | deallocation functions | C++98 |
| operator delete[] | C++98 | |
| get_new_handler | retrieves the current new handler | C++11 |
| set_new_handler | registers a new handler | C++11 |
Synopsis
namespace std {
class bad_alloc;
class bad_array_new_length;
struct nothrow_t {};
extern const nothrow_t nothrow;
typedef void (*new_handler)();
new_handler get_new_handler() noexcept;
new_handler set_new_handler(new_handler new_p) noexcept;
}
void* operator new(std::size_t size);
void* operator new(std::size_t size, const std::nothrow_t&) noexcept;
void operator delete(void* ptr) noexcept;
void operator delete(void* ptr, const std::nothrow_t&) noexcept;
void* operator new[](std::size_t size);
void* operator new[](std::size_t size, const std::nothrow_t&) noexcept;
void operator delete[](void* ptr) noexcept;
void operator delete[](void* ptr, const std::nothrow_t&) noexcept;
void* operator new (std::size_t size, void* ptr) noexcept;
void* operator new[](std::size_t size, void* ptr) noexcept;
void operator delete (void* ptr, void*) noexcept;
void operator delete[](void* ptr, void*) noexcept;