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Add a task to get status


GearmanClient::addTaskStatus

(PECL gearman >= 0.5.0)

GearmanClient::addTaskStatusAdd a task to get status

Description

public GearmanTask GearmanClient::addTaskStatus ( string $job_handle [, string &$context ] )

Used to request status information from the Gearman server, which will call the specified status callback (set using GearmanClient::setStatusCallback()).

Parameters

job_handle

The job handle for the task to get status for

context

Data to be passed to the status callback, generally a reference to an array or object

Return Values

A GearmanTask object.

Examples

Example #1 Monitor completion of multiple background tasks

An artificial delay is introduced in the worker in this example to simulate a long running process. There is only one worker running for this example.

<?php

/* create our object */
$gmclient= new GearmanClient();

/* add the default server */
$gmclient->addServer();

/* start some background jobs and save the handles */
$handles = array();
$handles[0] = $gmclient->doBackground("reverse""Hello World!");
$handles[1] = $gmclient->doBackground("reverse""!dlroW olleH");

$gmclient->setStatusCallback("reverse_status");

/* Poll the server to see when those background jobs finish; */
/* a better method would be to use event callbacks */
do
{
   
/* Use the context variable to track how many tasks have completed */
   
$done 0;
   
$gmclient->addTaskStatus($handles[0], &$done);
   
$gmclient->addTaskStatus($handles[1], &$done);
   
$gmclient->runTasks();
   echo 
"Done: $done\n";
   
sleep(1);
}
while (
$done != 2);

function 
reverse_status($task$done)
{
   if (!
$task->isKnown())
      
$done++;
}

?>

The above example will output something similar to:

 Done: 0 Done: 0 Done: 0 Done: 0 Done: 0 Done: 0 Done: 0 Done: 0 Done: 0 Done: 0 Done: 0 Done: 0 Done: 1 Done: 1 Done: 1 Done: 1 Done: 1 Done: 1 Done: 1 Done: 1 Done: 1 Done: 1 Done: 1 Done: 1 Done: 2 

See Also



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