(Информация о версии неизвестна, возможно, только в SVN)
Введение
The static methods contained in the Mutex class provide direct access to Posix Mutex functionality.
Обзор классов
Mutex
{
final
public
static
long
create
([
boolean
$lock
] )
final
public
static
boolean
destroy
(
long
$mutex
)
final
public
static
boolean
lock
(
long
$mutex
)
final
public
static
boolean
trylock
(
long
$mutex
)
final
public
static
boolean
unlock
(
long
$mutex
[,
boolean
$destroy
] )
}