From Doug:

I finally had a chance to re-check last FJ change (CR 7035020)
and saw that it could cause a shutdown check to be skipped.
Now really fixed. (Again, the big lesson here is: don't make
last-minute refactorings).


*** ForkJoinPool.java 2011/04/01 20:20:33 1.61
--- ForkJoinPool.java 2011/04/13 11:35:26 1.62
***************
*** 795,801 ****
              else if (w.eventCount != v)
                  return true; // update next time
          }
! if ((int)c != 0 && parallelism + (int)(nc >> AC_SHIFT) == 0 &&
              blockedCount == 0 && quiescerCount == 0)
              idleAwaitWork(w, nc, c, v); // quiescent
          for (boolean rescanned = false;;) {
--- 795,802 ----
              else if (w.eventCount != v)
                  return true; // update next time
          }
! if ((!shutdown || !tryTerminate(false)) &&
! (int)c != 0 && parallelism + (int)(nc >> AC_SHIFT) == 0 &&
              blockedCount == 0 && quiescerCount == 0)
              idleAwaitWork(w, nc, c, v); // quiescent
          for (boolean rescanned = false;;) {