Cond::wait
(PECL pthreads < 3.0.0)
Cond::wait — Wait for Condition
Warning
The Cond class has been removed in pthreads v3.
Description
final public static boolean Cond::wait ( long $condition , long $mutex [, long $timeout ] )Wait for a signal on a Condition Variable, optionally specifying a timeout to limit waiting time.
Parameters
condition
A handle returned by a previous call to Cond::create().
mutex
A handle returned by a previous call to Mutex::create() and owned (locked) by the caller.
timeout
An optional timeout, in microseconds ( millionths of a second ).
Return Values
A boolean indication of success.
Examples
Example #1 Waiting for Conditions
<?php
/**?PLEASE?NOTE?THIS?EXAMPLE?WILL?CAUSE?THE?PROCESS?TO?HANG?**/
$mutex?=?Mutex::create(true);
/**?You?cannot?use?the?"new"?keyword,?a?Cond?is?not?a?PHP?object?**/
$cond?=?Cond::create();
/**?The?caller?must?lock?the?associated?Mutex?before?a?call?to?broadcast?**/
var_dump(Cond::wait($cond,?$mutex));
/**?Always?destroy?Cond?you?have?created?**/
Cond::destroy($cond);
Mutex::unlock($mutex);
Mutex::destroy($mutex);
?>The above example will output:
int(49685473)← Cond::signal
Volatile →
? 1997–2017 The PHP Documentation GroupLicensed under the Creative Commons Attribution License v3.0 or later.
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