Dynamic memory management
From cppreference.com
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Smart pointers
Smart pointers enable automatic, exception-safe, object lifetime management.
| Defined in header
<memory> | |
Pointer categories | |
| (C++11) |
smart pointer with unique object ownership semantics (class template) |
| (C++11) |
smart pointer with shared object ownership semantics (class template) |
| (C++11) |
weak reference to an object managed by std::shared_ptr (class template) |
| (removed in C++17) |
smart pointer with strict object ownership semantics (class template) |
Helper classes | |
| (C++11) |
provides mixed-type owner-based ordering of shared and weak pointers (class template) |
| (C++11) |
allows an object to create a shared_ptr referring to itself (class template) |
| (C++11) |
exception thrown when accessing a weak_ptr which refers to already destroyed object (class) |
| (C++11) |
default deleter for unique_ptr (class template) |
Allocators
Allocators are class templates encapsulating memory allocation strategy. This allows generic containers to decouple memory management from the data itself.
| Defined in header
<memory> | |
| the default allocator (class template) | |
| (C++11) |
provides information about allocator types (class template) |
| (C++11) |
tag type used to select allocator-aware constructor overloads (class) |
| (C++11) |
an object of type std::allocator_arg_t used to select allocator-aware constructors (constant) |
| (C++11) |
checks if the specified type supports uses-allocator construction (class template) |
| Defined in header
<scoped_allocator> | |
| (C++11) |
implements multi-level allocator for multi-level containers (class template) |
| Defined in header
<memory_resource> | |
| Defined in namespace
pmr | |
| (C++17) |
an allocator that supports run-time polymorphism based on the std::memory_resource it is constructed with (class template) |
Memory resources
Memory resources implement memory allocation strategies that can be used by std::pmr::polymorphic_allocator
| Defined in header
<memory_resource> | |
| Defined in namespace
pmr | |
| (C++17) |
an abstract interface for classes that encapsulate memory resources (class) |
| (C++17) |
returns a static program-wide std::pmr::memory_resource that uses the global operator new and operator delete to allocate and deallocate memory (function) |
| (C++17) |
returns a static std::pmr::memory_resource that performs no allocation (function) |
| (C++17) |
gets the default std::pmr::memory_resource (function) |
| (C++17) |
sets the default std::pmr::memory_resource (function) |
| (C++17) |
a set of constructor options for pool resources (class) |
| (C++17) |
a thread-safe std::pmr::memory_resource for managing allocations in pools of different block sizes (class) |
| (C++17) |
a thread-unsafe std::pmr::memory_resource for managing allocations in pools of different block sizes (class) |
| (C++17) |
a special-purpose std::pmr::memory_resource that releases the allocated memory only when the resource is destroyed (class) |
Uninitialized storage
Several utilities are provided to create and access raw storage
| Defined in header
<memory> | |
| copies a range of objects to an uninitialized area of memory (function template) | |
| (C++11) |
copies a number of objects to an uninitialized area of memory (function template) |
| copies an object to an uninitialized area of memory, defined by a range (function template) | |
| copies an object to an uninitialized area of memory, defined by a start and a count (function template) | |
| (C++17) |
moves a range of objects to an uninitialized area of memory (function template) |
| (C++17) |
moves a number of objects to an uninitialized area of memory (function template) |
| constructs objects by default-initialization in an uninitialized area of memory, defined by a range (function template) | |
| constructs objects by default-initialization in an uninitialized area of memory, defined by a start and a count (function template) | |
| constructs objects by value-initialization in an uninitialized area of memory, defined by a range (function template) | |
| constructs objects by value-initialization in an uninitialized area of memory, defined by a start and a count (function template) | |
| (C++17) |
destroys an object at a given address (function template) |
| (C++17) |
destroys a range of objects (function template) |
| (C++17) |
destroys a number of objects in a range (function template) |
| (deprecated in C++17)(removed in C++20) |
an iterator that allows standard algorithms to store results in uninitialized memory (class template) |
| (deprecated in C++17)(removed in C++20) |
obtains uninitialized storage (function template) |
| (deprecated in C++17)(removed in C++20) |
frees uninitialized storage (function template) |
Garbage collector support
| Defined in header
<memory> | |
| (C++11) |
declares that an object can not be recycled (function) |
| (C++11) |
declares that an object can be recycled (function template) |
| (C++11) |
declares that a memory area does not contain traceable pointers (function) |
| (C++11) |
cancels the effect of std::declare_no_pointers (function) |
| (C++11) |
lists pointer safety models (enum) |
| (C++11) |
returns the current pointer safety model (function) |
Miscellaneous
| Defined in header
<memory> | |
| (C++11) |
provides information about pointer-like types (class template) |
| (C++20) |
obtains a raw pointer from a pointer-like type (function template) |
| (C++11) |
obtains actual address of an object, even if the & operator is overloaded (function template) |
| (C++11) |
aligns a pointer in a buffer (function) |
C-style memory management
Includes e.g. std::malloc, std::free
Low level memory management
Includes e.g. operator new , operator delete , std::set_new_handler