SyncSharedMemory::__construct

(PECL sync >= 1.1.0)

SyncSharedMemory::__construct — Constructs a new SyncSharedMemory object

Açıklama

public SyncSharedMemory::__construct(string $name, int $size)

Constructs a named shared memory object.

Bağımsız Değişkenler

name: The name of the shared memory object.

Bilginize:
If the name already exists, it must be able to be opened by the current user that the process is running as or an exception will be thrown with a meaningless error message.
size: The size, in bytes, of shared memory to reserve.

Bilginize:
The amount of memory cannot be resized later. Request sufficient storage up front.

Dönen Değerler

The new SyncSharedMemory object.

Hatalar/İstisnalar

An exception is thrown if the shared memory object cannot be created or opened.

Örnekler

Örnek 1 SyncSharedMemory::__construct() example

<?php
/ You will probably need to protect shared memory with other synchronization objects.
/ Shared memory goes away when the last reference to it disappears.
$mem = new SyncSharedMemory("AppReportName", 1024);
if ($mem->first())
{
    / Do first time initialization work here.
}

$result = $mem->write(json_encode(array("name" => "my_report.txt")));
?>

Ayrıca Bakınız

SyncSharedMemory::first() - Check to see if the object is the first instance system-wide of named shared memory
SyncSharedMemory::size() - Returns the size of the named shared memory
SyncSharedMemory::write() - Copy data to named shared memory
SyncSharedMemory::read() - Copy data from named shared memory

Found A Problem?

Learn How To Improve This Page • Submit a Pull Request • Report a Bug

＋add a note

User Contributed Notes

There are no user contributed notes for this page.