static void releaseDBLockOnTimeoutEval() {
  callOptMC("beforeDelegatingToThread_do", f releaseDBLockOnTimeoutEval_before);
  callOptMC("afterDelegatingToThread_do", f releaseDBLockOnTimeoutEval_after);
}

static new ThreadLocal<Bool> releaseDBLockOnTimeoutEval_hadLock;

svoid releaseDBLockOnTimeoutEval_before(Thread t) {
  releaseDBLockOnTimeoutEval_hadLock.set(unlockIfHolding(dbLock()));
}

svoid releaseDBLockOnTimeoutEval_after(Thread t) {
  if (isTrue(getAndClearThreadLocal(releaseDBLockOnTimeoutEval_hadLock)))
    lock(dbLock());
}