Swoole\Atomic::__construct

(PECL swoole >= 1.9.0)

Swoole\Atomic::__construct — Construct a swoole atomic object.

説明

public function Swoole\Atomic::__construct(int $value = ?)

Swoole atomic object is an integer variable allows any processor to atomically test and modify. It is implemented based on CPU atomic instructions. The Swoole atomic variables have to defined before swoole_server->start.

Compare-and-swap (CAS) is an atomic instruction used in multithreading to achieve synchronization. It compares the content of a memory location with a given value and, only if they are the same, modifies the content of that memory location to a new given value.

パラメータ

value: The value of the atomic object.

関連キーワード:

atomic Swoole Atomic swoole Construct construct content memory location given cmpset integer variable allows processor atomically modify implemented based instructions variables defined before server start