ut_hash_interface_t Class Reference

An interface class to a basic hash table, that ut_lock_free_hash_t is. More...

#include <ut0lock_free_hash.h>

Inheritance diagram for ut_hash_interface_t:

Public Member Functions
virtual	~ut_hash_interface_t ()=default
	Destructor. More...
virtual int64_t	get (uint64_t key) const =0
	Get the value mapped to a given key. More...
virtual void	set (uint64_t key, int64_t val)=0
	Set the value for a given key, either inserting a new (key, val) tuple or overwriting an existent value. More...
virtual void	del (uint64_t key)=0
	Delete a (key, val) pair from the hash. More...
virtual void	inc (uint64_t key)=0
	Increment the value for a given key with 1 or insert a new tuple (key, 1). More...
virtual void	dec (uint64_t key)=0
	Decrement the value of a given key with 1 or insert a new tuple (key, -1). More...

Static Public Attributes
static const int64_t	NOT_FOUND = INT64_MAX
	The value that is returned when the searched for key is not found. More...

Detailed Description

An interface class to a basic hash table, that ut_lock_free_hash_t is.

Constructor & Destructor Documentation

~ut_hash_interface_t()

virtual ut_hash_interface_t::~ut_hash_interface_t ( )

virtualdefault

Destructor.

Member Function Documentation

dec()

virtual void ut_hash_interface_t::dec ( uint64_t  key )

pure virtual

Decrement the value of a given key with 1 or insert a new tuple (key, -1).

Parameters

[in]

key

key whose value to decrement

Implemented in ut_lock_free_hash_t.

del()

virtual void ut_hash_interface_t::del ( uint64_t  key )

pure virtual

Delete a (key, val) pair from the hash.

Parameters

[in]

key

key whose pair to delete

Implemented in ut_lock_free_hash_t.

get()

virtual int64_t ut_hash_interface_t::get ( uint64_t  key ) const

pure virtual

Get the value mapped to a given key.

Parameters

[in]

key

key to look for

Returns

the value that corresponds to key or NOT_FOUND.

Implemented in ut_lock_free_hash_t.

inc()

virtual void ut_hash_interface_t::inc ( uint64_t  key )

pure virtual

Increment the value for a given key with 1 or insert a new tuple (key, 1).

Parameters

[in]

key

key whose value to increment or insert as 1

Implemented in ut_lock_free_hash_t.

set()

virtual void ut_hash_interface_t::set ( uint64_t  key, int64_t  val  )

pure virtual

Set the value for a given key, either inserting a new (key, val) tuple or overwriting an existent value.

Parameters

[in]	key	key whose value to set
[in]	val	value to be set

Implemented in ut_lock_free_hash_t.

Member Data Documentation

NOT_FOUND

const int64_t ut_hash_interface_t::NOT_FOUND = INT64_MAX

static

The value that is returned when the searched for key is not found.

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

• storage/innobase/include/ut0lock_free_hash.h