src/java.base/macosx/classes/sun/nio/ch/DefaultPollerProvider.java

*** 28,17 ***
  
  /**
   * Default PollerProvider for macOS.
   */
  class DefaultPollerProvider extends PollerProvider {
!     DefaultPollerProvider() { }
  
      @Override
      Poller readPoller(boolean subPoller) throws IOException {
!         return new KQueuePoller(subPoller, true);
      }
  
      @Override
      Poller writePoller(boolean subPoller) throws IOException {
!         return new KQueuePoller(subPoller, false);
      }
  }
--- 28,23 ---
  
  /**
   * Default PollerProvider for macOS.
   */
  class DefaultPollerProvider extends PollerProvider {
!     DefaultPollerProvider(Poller.Mode mode) {
+         super(mode);
+     }
+ 
+     DefaultPollerProvider() {
+         this(Poller.Mode.SYSTEM_THREADS);
+     }
  
      @Override
      Poller readPoller(boolean subPoller) throws IOException {
!         return new KQueuePoller(pollerMode(), subPoller, true);
      }
  
      @Override
      Poller writePoller(boolean subPoller) throws IOException {
!         return new KQueuePoller(pollerMode(), subPoller, false);
      }
  }