function httprl_acquire_headless_lock in HTTP Parallel Request & Threading Library 6

Same name and namespace in other branches

1. 7 httprl.module \httprl_acquire_headless_lock()

Get a floating lock so background calls work.

Parameters

string $name: Name of the lock to use.

int $time: How long the lock will last.

2 calls to httprl_acquire_headless_lock()

httprl_acquire_lock in ./httprl.module

Get a lock so background calls work.

httprl_call_user_func_array_cache in ./httprl.module

Cache a function; regenerate return value in the background.

File

./httprl.module, line 2370

HTTP Parallel Request Library module.

Code

function httprl_acquire_headless_lock($name, $time = 60) {

  // Acquire lock for this run.
  $locked = FALSE;
  $lock_counter = 0;
  while (!$locked && $lock_counter < 3) {

    // Set lock to maximum amount of time.
    $locked = lock_acquire($name, $time);
    $lock_counter++;
  }
  if (!$locked) {
    return FALSE;
  }

  // Make sure lock exists after this process is dead.
  // Remove from the global locks variable.
  unset($GLOBALS['locks'][$name]);

  // Remove the lock_id reference in the database.
  $lock_inc = httprl_variable_get('lock_inc', './includes/lock.inc');
  if ($lock_inc === './includes/lock.inc') {
    if (defined('VERSION') && substr(VERSION, 0, 1) >= 7) {
      db_update('semaphore')
        ->fields(array(
        'value' => 'httprl',
      ))
        ->condition('name', $name)
        ->condition('value', _lock_id())
        ->execute();
    }
    else {
      db_query("UPDATE {semaphore} SET value = '%s' WHERE name = '%s' AND value = '%s'", 'httprl', $name, _lock_id());
    }
  }
  elseif (strpos($lock_inc, '/apdqc/apdqc.lock.inc') !== FALSE) {
    lock_change_lock_id($name, _lock_id(), 'httprl');
  }
  return TRUE;
}