PHPFUI/InstaDoc

SystemV shared memory based CacheItemPool implementation.

This CacheItemPool implementation can be used among multiple processes, but it doesn't provide any locking mechanism. If multiple processes write to this ItemPool, you have to avoid race condition manually in your code.

CloneableInstantiable

Implements
Psr\Cache\CacheItemPoolInterface

Public
Private

Constants

public Google\Auth\Cache\SysVCacheItemPool::DEFAULT_MEMSIZE = 10000

public Google\Auth\Cache\SysVCacheItemPool::DEFAULT_PERM = 384

public Google\Auth\Cache\SysVCacheItemPool::DEFAULT_PROJ = 'A'

public Google\Auth\Cache\SysVCacheItemPool::DEFAULT_SEM_PROJ = 'B'

public Google\Auth\Cache\SysVCacheItemPool::VAR_KEY = 1

Methods

public __construct( $options = [])

Create a SystemV shared memory based CacheItemPool.

param mixed[] $options { [optional] Configuration options.

@type int    $variableKey The variable key for getting the data from the shared memory. **Defaults to** 1.
@type string $proj        The project identifier for ftok. This needs to be a one character string.
                          **Defaults to** 'A'.
@type string $semProj     The project identifier for ftok to provide to `sem_get`. This needs to be a one
                          character string.
                          **Defaults to** 'B'.
@type int    $memsize     The memory size in bytes for shm_attach. **Defaults to** 10000.
@type int    $perm        The permission for shm_attach. **Defaults to** 0600.

}

public clear() : bool

public commit() : bool

public deleteItem( $key) : bool

public deleteItems(array $keys) : bool

public getItem( $key) : Psr\Cache\CacheItemInterface

param mixed $key
return \CacheItemInterface

public getItems(array $keys = []) : iterable

param mixed[] $keys
return iterable<\CacheItemInterface>

public hasItem( $key) : bool

public save(Psr\Cache\CacheItemInterface $item) : bool

public saveDeferred(Psr\Cache\CacheItemInterface $item) : bool

Properties

private $deferredItems = NULL

var \CacheItemInterface[]

private $hasLoadedItems = false

var bool

private $items = NULL

var \CacheItemInterface[]

private ?int $lockOwnerPid = NULL

Maintain the process which is currently holding the semaphore to prevent deadlock.

var int|null

private $options = NULL

var mixed[]

private SysvSemaphore|false $semId = false

var \SysvSemaphore|false

private $sysvKey = NULL

var int

Methods

private acquireLock() : bool

private attachShm() : SysvSharedMemory|false

private loadItems()

Load the items from the shared memory.

return bool true when success, false upon failure

private releaseLock() : bool

private resetShm() : void

private saveCurrentItems()

Save the current items.

return bool true when success, false upon failure

ConfigurationCode Formating StyleTab Stop SpacesNumbers (0-9.) only