add toString to some pool-executed runnables to make it easier to find causes of our thread pool growth

platform/platform-impl/src/com/intellij/openapi/progress/util/ProgressIndicatorUtils.java

@@ -205,6 +205,12 @@ public class ProgressIndicatorUtils {
                 }
               }
             }
+
+            @Override
+            public String toString() {
+              return readTask.toString();
+            }
+
           });
         }
         catch (RuntimeException e) {

platform/platform-impl/src/com/intellij/openapi/util/ZipperUpdater.java

@@ -49,7 +49,7 @@ public class ZipperUpdater {
     queue(runnable, false);
   }
 
-  public void queue(@NotNull final Runnable runnable, final boolean urgent) {
+  private void queue(@NotNull final Runnable runnable, final boolean urgent) {
     queue(runnable, urgent, false);
   }
 
@@ -71,6 +71,11 @@ public class ZipperUpdater {
               myIsEmpty = !myRaised;
             }
           }
+
+          @Override
+          public String toString() {
+            return runnable.toString();
+          }
         };
         if (Alarm.ThreadToUse.SWING_THREAD.equals(myThreadToUse)) {
           if (anyModality) {