Table Class Reference

#include "steam/engine/buffer-metadata.hpp"

Description

(Hash)Table to store and manage buffer metadata.

Buffer metadata entries are comprised of a Key part and an extended Entry, holding the actual management and housekeeping metadata. The Keys are organised hierarchically and denote the "kind" of buffer. The hash values for lookup are based on the key part, chained with the actual memory location of the concrete buffer corresponding to the metadata entry to be retrieved.

Definition at line 441 of file buffer-metadata.hpp.

Public Member Functions
Entry *	fetch (HashVal hashID)
	fetch metadata record, if any More...
const Entry *	fetch (HashVal hashID) const
void	remove (HashVal hashID)
Entry &	store (Entry const &newEntry)
	store a copy of the given new metadata entry. More...

Private Types
typedef std::unordered_map< HashVal, Entry >	MetadataStore

Private Member Functions
void	verify_all_buffers_freed ()

Static Private Member Functions
static void	verify_is_free (std::pair< HashVal, Entry > const &e)

Private Attributes
MetadataStore	entries_

Member Function Documentation

fetch()

Entry* fetch ( HashVal  hashID )

inline

fetch metadata record, if any

Parameters

hashID

for the Key part of the metadata entry

Returns

pointer to the entry in the table or NULL

Definition at line 455 of file buffer-metadata.hpp.

Referenced by BufferMetadata::get(), and BufferMetadata::release().

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store()

Entry& store ( Entry const &  newEntry )

inline

store a copy of the given new metadata entry.

The hash key for lookup is retrieved from the given Entry, by conversion to HashVal. Consequently, this will be the hashID of the parent Key (type), when the entry holds a NULL buffer (i.e a "pseudo entry"). Otherwise, it will be this parent Key hash, extended by hashing the actual buffer address.

Returns

reference to relevant entry for this Key. This might be a copy of the new entry, or an already existing entry with the same Key

Definition at line 483 of file buffer-metadata.hpp.

Collaboration diagram for Table:

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

• buffer-metadata.hpp