Ipc::StoreMapAnchor Class Reference

#include <StoreMap.h>

Collaboration diagram for Ipc::StoreMapAnchor:

Classes

struct  Basics
 

Public Member Functions

 StoreMapAnchor ()
 
void set (const StoreEntry &anEntry, const cache_key *aKey=nullptr)
 store StoreEntry key and basics for an inode slot More...
 
void exportInto (StoreEntry &) const
 load StoreEntry basics that were previously stored with set() More...
 
void setKey (const cache_key *const aKey)
 
bool sameKey (const cache_key *const aKey) const
 
void rewind ()
 undo the effects of set(), setKey(), etc., but keep locks and state More...
 
bool empty () const
 
bool reading () const
 
bool writing () const
 
bool complete () const
 

Public Attributes

ReadWriteLock lock
 protects slot data below More...
 
std::atomic< uint8_t > waitingToBeFreed
 
std::atomic< uint8_t > writerHalted
 whether StoreMap::abortWriting() was called for a read-locked entry More...
 
uint64_t key [2] = {0, 0}
 StoreEntry key. More...
 
struct Ipc::StoreMapAnchor::Basics basics
 
std::atomic< StoreMapSliceIdstart
 where the chain of StoreEntry slices begins [app] More...
 
std::atomic< StoreMapSliceIdsplicingPoint
 

Detailed Description

Maintains shareable information about a StoreEntry as a whole. An anchor points to one or more StoreEntry slices. This is the only lockable part of shared StoreEntry information, providing protection for all StoreEntry slices.

Definition at line 53 of file StoreMap.h.

Constructor & Destructor Documentation

◆ StoreMapAnchor()

Ipc::StoreMapAnchor::StoreMapAnchor ( )

Definition at line 757 of file StoreMap.cc.

Member Function Documentation

◆ complete()

bool Ipc::StoreMapAnchor::complete ( ) const
inline

◆ empty()

◆ exportInto()

◆ reading()

bool Ipc::StoreMapAnchor::reading ( ) const
inline

◆ rewind()

void Ipc::StoreMapAnchor::rewind ( )

◆ sameKey()

bool Ipc::StoreMapAnchor::sameKey ( const cache_key *const  aKey) const

◆ set()

◆ setKey()

void Ipc::StoreMapAnchor::setKey ( const cache_key *const  aKey)

◆ writing()

Member Data Documentation

◆ basics

◆ key

uint64_t Ipc::StoreMapAnchor::key[2] = {0, 0}

Definition at line 85 of file StoreMap.h.

Referenced by rewind(), sameKey(), and setKey().

◆ lock

◆ splicingPoint

std::atomic<StoreMapSliceId> Ipc::StoreMapAnchor::splicingPoint

where the updated chain prefix containing metadata/headers ends [update] if unset, this anchor points to a chain that was never updated

Definition at line 112 of file StoreMap.h.

Referenced by Ipc::StoreMap::closeForUpdating(), Ipc::StoreMap::freeChain(), Ipc::StoreMap::openForWritingAt(), and rewind().

◆ start

◆ waitingToBeFreed

◆ writerHalted

std::atomic<uint8_t> Ipc::StoreMapAnchor::writerHalted

Definition at line 80 of file StoreMap.h.

Referenced by Ipc::StoreMap::abortWriting(), and rewind().


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

 

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