2277   ResourceMark rm;

  2277   ResourceMark rm;

  2278   assert(SafepointSynchronize::is_at_safepoint(), "should be at safepoint");

  2278   assert(SafepointSynchronize::is_at_safepoint(), "should be at safepoint");

  2279   assert(Thread::current() == VMThread::vm_thread(), "should be in vm thread");

  2279   assert(Thread::current() == VMThread::vm_thread(), "should be in vm thread");

  2280   guarantee(!is_gc_active(), "collection is not reentrant");

  2280   guarantee(!is_gc_active(), "collection is not reentrant");

  2281   assert(regions_accounted_for(), "Region leakage!");

  2281   assert(regions_accounted_for(), "Region leakage!");

  2283 

  2284 

  2284   if (g1_policy()->in_young_gc_mode()) {

  2285   if (g1_policy()->in_young_gc_mode()) {

  2285     assert(check_young_list_well_formed(),

  2286     assert(check_young_list_well_formed(),

  2286                 "young list should be well formed");

  2287                 "young list should be well formed");

  2287   }

  2288   }