new
标准库标头<new>
此标头是动态内存管理库，特别是提供低级内存管理特征。
功能
*。
运算符新运算符。[分配功能%28功能%29
运算符删除。[]取消分配功能%28功能%29
弄到[医]新[医]处理程序%28C++11%29获得当前新处理程序%28函数%29
集[医]新[医]处理程序注册一个新的处理程序%28函数%29
清洗%28C++17%29指针优化屏障%28功能模板%29
班
坏[医]内存分配失败时引发的分配异常%28class%29
坏[医]列阵[医]新[医]长度%28C++11%29异常在分配无效长度%28class%29的数组时抛出
无抛[医]用于选择非抛出分配函数%28class%29的t标记类型
对齐[医]瓦尔[医]T%28C++17%29类型用于将对齐传递给对齐感知的分配和去分配函数%28class%29
类型
新[医]新处理程序%28-胡枝子f%29的处理程序函数指针类型
对象
不抛类型的对象[医]t用于选择非抛出分配函数%28常量%29。
硬件[医]破坏性[医]干扰[医]尺寸硬件[医]建设性[医]干扰[医]大小%28C++17%29分钟偏移以避免错误共享最大偏移量以促进真正共享%28常量%29
简介
二次
namespace std {
class bad_alloc;
class bad_array_new_length;
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;
template <class T> constexpr T* launder(T* p) noexcept;
static constexpr size_t
hardware_destructive_interference_size = /*implementation-defined*/ ;
static constexpr size_t
hardware_constructive_interference_size = /*implementation-defined*/ ;
}
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[](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 (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;
二次
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