didHaveMemoryPressure method

@protected @override @mustCallSuper void didHaveMemoryPressure()

Called when the system is running low on memory.

Implementation

@protected
@override
@mustCallSuper
void didHaveMemoryPressure() {
  ///
  /// This method exposes the `memoryPressure` notification from
  /// [SystemChannels.system].

  /// No 'setState()' functions are allowed to fully function at this point.
  _rebuildAllowed = false;
  for (final listener in _beforeList) {
    listener.didHaveMemoryPressure();
  }
  for (final con in _controllerList) {
    con.didHaveMemoryPressure();
  }
  for (final listener in _afterList) {
    listener.didHaveMemoryPressure();
  }
  _rebuildAllowed = true;
  if (_rebuildRequested || _inTester) {
    _rebuildRequested = false;

    /// Perform a 'rebuild' if requested.
    refresh();
  }
}