azjezz / mutex Goto Github PK

function lock<T>((function(): T) $call): ?T;

use function AzJezz\Mutex\lock;

function foo(): void {
  lock('foo-function', () ==> {
    // only one thread at a time may execute this statement
  });
}

final abstract class MutexRepository {
  public static function set(MutexInterface $mutex);

  /**
   * Implementation should throw an exception if the repository holds
   * no mutex implementations OR return a default implementation.
   *
   * if the implementation returned a default implementations, it should
   * call `set($default)` to ensure that the same instance is returned in the
   * next call.
   */
  public static function get(): MutexInterface;
}

$lock = await $mutex->acquire(
  'foo', 
  300, // Expiring time in seconds
);

do {

  // do things

  if (bar()) {
    $finished = false;
  } else {
    $finished = true;
  }

  if (!$finished  && $mutex->getRemainingLifetime($lock) <= 5) {
    invariant(!$mutex->isExpired($lock), 'Lock lost during the overall process');

    await $mutex->refresh($lock);
  }

} while(!$finished);