(PHP ActiveX) Thread Pool Size

Demonstrates how to set the maximum number of threads in Chilkat's thread pool manager. Also demonstrates how to set a thread pool log file for help in diagnosing unexpected problems.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

// All Chilkat classes can be unlocked at once at the beginning of a program
// by calling UnlockBundle.  It requires a Bundle unlock code.
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Global')
$chilkatGlob = new COM("Chilkat.Global");
$success = $chilkatGlob->UnlockBundle('Anything for 30-day trial.');
if ($success != 1) {
    print $chilkatGlob->LastErrorText . "\n";
    exit;
}

// Set the maximum number of threads in the Chilkat thread pool to 12.
// This means that no more than 12 background worker threads will exist simultaneously.
// If more than 12 tasks are queued then some must wait for a worker thread to become free.
// Note: The Chilkat thread pool manager thread is a thread distinct from the
// worker threads.  It starts when the 1st asynchronous task is Run. 
$chilkatGlob->MaxThreads = 12;

// Also, the ThreadPoolLogPath can be set to cause the thread pool manager thread to
// keep a log file. This is for the purpose of debugging if unexpected problems occur.
$chilkatGlob->ThreadPoolLogPath = '/home/users/chilkat/logs/threadPoolLog.txt';

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Http')
$http1 = new COM("Chilkat.Http");
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Http')
$http2 = new COM("Chilkat.Http");
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Http')
$http3 = new COM("Chilkat.Http");

$url1 = 'http://www.marcusmiller.com/';
$url2 = 'http://www.tromboneshorty.com/';
$url3 = 'http://www.jamesmorrison.com/';

// Call the async version of the QuickGetStr method to return a task object.
// The task object is loaded, but is in the Inert state -- meaning it is
// not yet scheduled to run on Chilkat's background thread pool.
// task1 is a Chilkat.Task
$task1 = $http1->QuickGetStrAsync($url1);
if ($http1->LastMethodSuccess == 0) {
    print $http1->LastErrorText . "\n";
    exit;
}

// task2 is a Chilkat.Task
$task2 = $http2->QuickGetStrAsync($url2);
if ($http2->LastMethodSuccess == 0) {
    print $http2->LastErrorText . "\n";

    exit;
}

// task3 is a Chilkat.Task
$task3 = $http3->QuickGetStrAsync($url3);
if ($http3->LastMethodSuccess == 0) {
    print $http3->LastErrorText . "\n";

    exit;
}

// At this point we have 3 task objects, each loaded with a Chilkat method call.
// Note: At this point no background threads are running.  The thread pool manager
// thread is not started -- it will start when the very first task is Run.

// Schedule each task for running on the thread pool.  This changes each task's state
// from Inert to Live. The thread pool manager thread starts with the 1st task queued.
// If the Global.ThreadPoolLogPath property was set, then
// the log file would be created (or appended) at this point.
$success = $task1->Run();
// Assuming success for brevity...
$success = $task2->Run();
$success = $task3->Run();

// The application is now free to do anything else
// while the HTML at the URL's are being downloaded in background threads.

// In this case, we'll just wait for all three tasks to finish.
// All three tasks are running simultaneously in separate background threads.
// We can wait for each in any order.  If Wait is called and the task has already
// finished (or been canceled), then the Wait method returns immediately.
$maxWaitMs = 20000;
$success = $task1->Wait($maxWaitMs);
$success = $task2->Wait($maxWaitMs);
$success = $task3->Wait($maxWaitMs);
// Assuming success for brevity...

$err = 'Task failed or canceled';
$html1 = $err;
$html2 = $err;
$html3 = $err;

// Now get the HTML downloaded in each task:
if (($task1->StatusInt == 7) and ($task1->TaskSuccess == 1)) {
    $html1 = $task1->getResultString();
}

if (($task2->StatusInt == 7) and ($task2->TaskSuccess == 1)) {
    $html2 = $task2->getResultString();
}

if (($task3->StatusInt == 7) and ($task3->TaskSuccess == 1)) {
    $html3 = $task3->getResultString();
}

print $html1 . "\n";
print '----' . "\n";
print $html2 . "\n";
print '----' . "\n";
print $html3 . "\n";
print '----' . "\n";


?>