Memory management

Detailed Description

Functions and classes for managing memory.

Memory management in seastar consists of the following:

• Low-level memory management in the memory namespace.
• Various smart pointers: shared_ptr, lw_shared_ptr, and foreign_ptr.
• zero-copy support: temporary_buffer and deleter.

Classes
class	seastar::deleter
class	seastar::temporary_buffer< CharType >

Functions
	seastar::deleter::~deleter ()
	Destroys the deleter and carries out the encapsulated action.
deleter &	seastar::deleter::operator= (deleter &&x) noexcept
template<typename Object >
deleter	make_deleter (deleter next, Object o)
template<typename Object >
deleter	make_deleter (Object o)
deleter	seastar::deleter::share ()
void	seastar::deleter::append (deleter d)
deleter	make_free_deleter (void *obj)
deleter	make_free_deleter (deleter next, void *obj)
template<typename T >
deleter	make_object_deleter (T &&obj)
template<typename T >
deleter	make_object_deleter (deleter d, T &&obj)

Function Documentation

append()

void seastar::deleter::append ( deleter  d )

inline

Appends another deleter to this deleter. When this deleter is destroyed, both encapsulated actions will be carried out.

make_deleter() [1/2]

template<typename Object >

deleter make_deleter ( deleter  next, Object  o  )

related

Makes a deleter that encapsulates the action of destroying an object, as well as running another deleter. The input object is moved to the deleter, and destroyed when the deleter is destroyed.

Parameters

next	deleter that will become part of the new deleter's encapsulated action
o	object whose destructor becomes part of the new deleter's encapsulated action

make_deleter() [2/2]

template<typename Object >

deleter make_deleter ( Object  o )

related

Makes a deleter that encapsulates the action of destroying an object. The input object is moved to the deleter, and destroyed when the deleter is destroyed.

Parameters

o	object whose destructor becomes the new deleter's encapsulated action

make_free_deleter() [1/2]

deleter make_free_deleter ( deleter  next, void *  obj  )

related

Makes a deleter that calls std::free() when it is destroyed, as well as invoking the encapsulated action of another deleter.

Parameters

next	deleter to invoke.
obj	object to free.

make_free_deleter() [2/2]

deleter make_free_deleter ( void *  obj )

related

Makes a deleter that calls std::free() when it is destroyed.

Parameters

obj	object to free.

make_object_deleter() [1/2]

template<typename T >

deleter make_object_deleter ( deleter  d, T &&  obj  )

related

See also

make_deleter(deleter, Object)

make_object_deleter() [2/2]

template<typename T >

deleter make_object_deleter ( T &&  obj )

related

See also

make_deleter(Object)

share()

deleter seastar::deleter::share ( )

inline

Performs a sharing operation. The encapsulated action will only be carried out after both the original deleter and the returned deleter are both destroyed.

Returns

a deleter with the same encapsulated action as this one.