(PECL gearman >= 0.5.0)
GearmanClient::addTaskHigh — Add a high priority task to run in parallel
$function_name
, string $workload
[, mixed &$context
[, string $unique
]] )Adds a high priority task to be run in parallel with other tasks. Call this method for all the high priority tasks to be run in parallel, then call GearmanClient::runTasks() to perform the work. Tasks with a high priority will be selected from the queue before those of normal or low priority.
function_nameDie registrierte Funktion, die der Worker ausführen soll
workloadSerialisierte Daten, die verarbeitet werden sollen
contextDer Anwendungskontext der mit einem Task verknüpft werden soll
uniqueEine eindeutige ID, die einen bestimmten Task identifiziert
A GearmanTask object or FALSE if the task could not be added.
Beispiel #1 A high priority task along with two normal tasks
A high priority task is included among two other tasks. A single worker is available, so that tasks are run one at a time, with the high priority task run first.
<?php
# create the gearman client
$gmc= new GearmanClient();
# add the default job server
$gmc->addServer();
# set the callback for when the job is complete
$gmc->setCompleteCallback("reverse_complete");
# add tasks, one of which is high priority
$task= $gmc->addTask("reverse", "Hello World!", null, "1");
$task= $gmc->addTaskHigh("reverse", "!dlroW olleH", null, "2");
$task= $gmc->addTask("reverse", "Hello World!", null, "3");
if (! $gmc->runTasks())
{
echo "ERROR " . $gmc->error() . "\n";
exit;
}
echo "DONE\n";
function reverse_complete($task)
{
echo "COMPLETE: " . $task->unique() . ", " . $task->data() . "\n";
}
?>
Das oben gezeigte Beispiel erzeugt eine ähnliche Ausgabe wie:
COMPLETE: 2, Hello World! COMPLETE: 3, !dlroW olleH COMPLETE: 1, !dlroW olleH DONE