Deprecation: #47712 - Deprecate old Locking API 

See forge#47712

Description 

The old class \TYPO3\CMS\Core\Locking\Locker has been marked as deprecated.

The configuration option [SYS][lockingMode] is now marked as deprecated and only affects the old Locker class, which is unused in the Core now.

Moreover two unused methods of \TYPO3\CMS\Frontend\Controller\TypoScriptFrontendController have been marked as deprecated:

  • acquirePageGenerationLock()
  • releasePageGenerationLock()

Impact 

Using the old class will trigger deprecation log messages.

Migration 

Use the new Locking Service API instead.