ErasedUnique Struct

Type-erased unique ownership wrapper. More...

Declaration

struct helios::core::memory::ErasedUnique { ... }

Public Constructors Index

	ErasedUnique ()=default
	Default constructor. Creates an empty (non-owning) instance. More...
template <class T>
ErasedUnique (std::unique_ptr< T > p) noexcept
	Constructs from a unique_ptr, taking ownership. More...
	ErasedUnique (ErasedUnique &&obj) noexcept
	Move constructor. Transfers ownership. More...

Public Destructor Index

	~ErasedUnique ()
	Destructor. Destroys the owned object if present. More...

Public Operators Index

ErasedUnique &	operator= (ErasedUnique &&obj) noexcept
	Move assignment. Transfers ownership after releasing current. More...

Public Member Functions Index

void	reset () noexcept
	Destroys the owned object and resets to empty. More...

Public Member Attributes Index

void *	ptr = nullptr
	Raw pointer to the owned object. More...
void(*	destroy)(void *) noexcept = nullptr
	Stateless deleter that knows the concrete type. More...

Description

Type-erased unique ownership wrapper.

ErasedUnique provides `unique_ptr`-like ownership semantics without requiring a common base class or virtual destructor. It stores a `void*` and a stateless deleter function pointer, totaling 16 bytes.

Used by ResourceRegistry to store heterogeneous resource types (Managers, CommandBuffers) in a single owning collection without vtable overhead for destruction.

## Move-Only Semantics

ErasedUnique is move-only. Moving transfers ownership and nulls the source. Copy construction and assignment are implicitly deleted.

See Also

ResourceRegistry

Definition at line 31 of file ErasedUnique.ixx.

Public Constructors

ErasedUnique()

helios::core::memory::ErasedUnique::ErasedUnique ()

default

Default constructor. Creates an empty (non-owning) instance.

Definition at line 46 of file ErasedUnique.ixx.

Referenced by ErasedUnique and operator=.

ErasedUnique()

template <class T>

helios::core::memory::ErasedUnique::ErasedUnique (std::unique_ptr< T > p)

inline explicit noexcept

Constructs from a unique_ptr, taking ownership.

Releases the unique_ptr and captures a typed deleter.

Template Parameters

T	The owned type.

Parameters

p	The unique_ptr to take ownership from.

Definition at line 58 of file ErasedUnique.ixx.

58 explicit ErasedUnique(std::unique_ptr<T> p) noexcept

59 : ptr(p.release()),

60 destroy([](void* q) noexcept { delete static_cast<T*>(q); })

61 {}

ErasedUnique()

helios::core::memory::ErasedUnique::ErasedUnique (ErasedUnique && obj)

inline noexcept

Move constructor. Transfers ownership.

Parameters

obj	The source instance (nulled after move).

Definition at line 68 of file ErasedUnique.ixx.

68 ErasedUnique(ErasedUnique&& obj) noexcept : ptr(obj.ptr), destroy(obj.destroy) {

69 obj.ptr = nullptr;

70 obj.destroy = nullptr;

71 }

Reference ErasedUnique.

Public Destructor

~ErasedUnique()

helios::core::memory::ErasedUnique::~ErasedUnique ()

inline

Destructor. Destroys the owned object if present.

Definition at line 93 of file ErasedUnique.ixx.

93 ~ErasedUnique() { reset(); }

Reference reset.

Public Operators

operator=()

ErasedUnique & helios::core::memory::ErasedUnique::operator= (ErasedUnique && obj)

inline noexcept

Move assignment. Transfers ownership after releasing current.

Parameters

obj	The source instance (nulled after move).

Returns

Reference to this instance.

Definition at line 80 of file ErasedUnique.ixx.

80 ErasedUnique& operator=(ErasedUnique&& obj) noexcept {

81 if (this != &obj) {

82 reset();

83 ptr = obj.ptr; destroy = obj.destroy;

84 obj.ptr = nullptr;

85 obj.destroy = nullptr;

86 }

87 return *this;

88 }

References destroy, ErasedUnique, ptr and reset.

Public Member Functions

reset()

void helios::core::memory::ErasedUnique::reset ()

inline noexcept

Destroys the owned object and resets to empty.

Definition at line 98 of file ErasedUnique.ixx.

98 void reset() noexcept {

99 if (ptr && destroy) {

100 destroy(ptr);

101 }

102 ptr = nullptr;

103 destroy = nullptr;

104 }

References destroy and ptr.

Referenced by operator= and ~ErasedUnique.

Public Member Attributes

destroy

void(* helios::core::memory::ErasedUnique::destroy) (void *) noexcept = nullptr

Stateless deleter that knows the concrete type.

Definition at line 41 of file ErasedUnique.ixx.

41 void (*destroy)(void*) noexcept = nullptr;

Referenced by operator= and reset.

ptr

void* helios::core::memory::ErasedUnique::ptr = nullptr

Raw pointer to the owned object.

Definition at line 36 of file ErasedUnique.ixx.

36 void* ptr = nullptr;

Referenced by operator= and reset.

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The documentation for this struct was generated from the following file:

• ErasedUnique.ixx

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