jdk/src/share/classes/sun/awt/image/SurfaceManager.java

*** 86,96 ****
  
      public static void setManager(Image img, SurfaceManager mgr) {
          imgaccessor.setSurfaceManager(img, mgr);
      }
  
!     private ConcurrentHashMap cacheMap;
  
      /**
       * Return an arbitrary cached object for an arbitrary cache key.
       * Other objects can use this mechanism to store cached data about
       * the source image that will let them save time when using or
--- 86,96 ----
  
      public static void setManager(Image img, SurfaceManager mgr) {
          imgaccessor.setSurfaceManager(img, mgr);
      }
  
!     private ConcurrentHashMap<Object,Object> cacheMap;
  
      /**
       * Return an arbitrary cached object for an arbitrary cache key.
       * Other objects can use this mechanism to store cached data about
       * the source image that will let them save time when using or
*** 121,131 ****
       */
      public void setCacheData(Object key, Object value) {
          if (cacheMap == null) {
              synchronized (this) {
                  if (cacheMap == null) {
!                     cacheMap = new ConcurrentHashMap(2);
                  }
              }
          }
          cacheMap.put(key, value);
      }
--- 121,131 ----
       */
      public void setCacheData(Object key, Object value) {
          if (cacheMap == null) {
              synchronized (this) {
                  if (cacheMap == null) {
!                     cacheMap = new ConcurrentHashMap<>(2);
                  }
              }
          }
          cacheMap.put(key, value);
      }
*** 243,253 ****
          flush(false);
      }
  
      synchronized void flush(boolean deaccelerate) {
          if (cacheMap != null) {
!             Iterator i = cacheMap.values().iterator();
              while (i.hasNext()) {
                  Object o = i.next();
                  if (o instanceof FlushableCacheData) {
                      if (((FlushableCacheData) o).flush(deaccelerate)) {
                          i.remove();
--- 243,253 ----
          flush(false);
      }
  
      synchronized void flush(boolean deaccelerate) {
          if (cacheMap != null) {
!             Iterator<Object> i = cacheMap.values().iterator();
              while (i.hasNext()) {
                  Object o = i.next();
                  if (o instanceof FlushableCacheData) {
                      if (((FlushableCacheData) o).flush(deaccelerate)) {
                          i.remove();