foedus::storage::hash::HashStorageControlBlock Struct Reference

Shared data of this storage type. More...

Detailed Description

Shared data of this storage type.

Definition at line 49 of file hash_storage_pimpl.hpp.

#include <hash_storage_pimpl.hpp>

Collaboration diagram for foedus::storage::hash::HashStorageControlBlock:

Public Member Functions
	HashStorageControlBlock ()=delete
	~HashStorageControlBlock ()=delete
bool	exists () const
uint16_t	get_root_children () const

Public Attributes
soc::SharedMutex	status_mutex_
StorageStatus	status_
	Status of the storage. More...
DualPagePointer	root_page_pointer_
	Points to the root page (or something equivalent). More...
HashMetadata	meta_
	metadata of this storage. More...
uint64_t	bin_count_
	How many hash bins this storage has. More...
uint8_t	levels_
	Number of levels of pages. More...
char	padding_ [7]

Constructor & Destructor Documentation

foedus::storage::hash::HashStorageControlBlock::HashStorageControlBlock ( )

delete

foedus::storage::hash::HashStorageControlBlock::~HashStorageControlBlock ( )

delete

Member Function Documentation

bool foedus::storage::hash::HashStorageControlBlock::exists ( ) const

inline

Definition at line 54 of file hash_storage_pimpl.hpp.

References foedus::storage::kExists, foedus::storage::kMarkedForDeath, and status_.

{ return status_ == kExists || status_ == kMarkedForDeath; }

uint16_t foedus::storage::hash::HashStorageControlBlock::get_root_children ( ) const

inline

Returns

the number of child pointers in the root page for this storage

Definition at line 56 of file hash_storage_pimpl.hpp.

References bin_count_, foedus::assorted::int_div_ceil(), foedus::storage::hash::kHashMaxBins, and levels_.

                                     {
    return assorted::int_div_ceil(bin_count_, kHashMaxBins[levels_ - 1U]);
  }

Here is the call graph for this function:

Member Data Documentation

uint64_t foedus::storage::hash::HashStorageControlBlock::bin_count_

How many hash bins this storage has.

bin_count_ = 2^bin_bits

Definition at line 76 of file hash_storage_pimpl.hpp.

Referenced by get_root_children().

uint8_t foedus::storage::hash::HashStorageControlBlock::levels_

Number of levels of pages.

1 means there is only 1 intermediate page pointing to data pages. 2 means a root page pointing down to leaf intermediate pages pointing to data pages. At least 1, and surely within 8 levels.

Definition at line 82 of file hash_storage_pimpl.hpp.

Referenced by get_root_children().

HashMetadata foedus::storage::hash::HashStorageControlBlock::meta_

metadata of this storage.

Definition at line 66 of file hash_storage_pimpl.hpp.

Referenced by foedus::storage::hash::operator<<().

char foedus::storage::hash::HashStorageControlBlock::padding_[7]

Definition at line 83 of file hash_storage_pimpl.hpp.

DualPagePointer foedus::storage::hash::HashStorageControlBlock::root_page_pointer_

Points to the root page (or something equivalent).

Definition at line 64 of file hash_storage_pimpl.hpp.

Referenced by foedus::storage::hash::HashPartitioner::design_partition_task().

StorageStatus foedus::storage::hash::HashStorageControlBlock::status_

Status of the storage.

Definition at line 62 of file hash_storage_pimpl.hpp.

Referenced by exists().

soc::SharedMutex foedus::storage::hash::HashStorageControlBlock::status_mutex_

Definition at line 60 of file hash_storage_pimpl.hpp.

---

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

• /home/shino/foedus_code/foedus-core/include/foedus/storage/hash/hash_storage_pimpl.hpp