src/share/vm/services/memoryService.cpp

*** 124,136 ****
  // The collector for GenCollectedHeap will have two memory managers.
  void MemoryService::add_gen_collected_heap_info(GenCollectedHeap* heap) {
    CollectorPolicy* policy = heap->collector_policy();
  
    assert(policy->is_generation_policy(), "Only support two generations");
-   guarantee(heap->n_gens() == 2, "Only support two-generation heap");
- 
    GenCollectorPolicy* gen_policy = policy->as_generation_policy();
    if (gen_policy != NULL) {
      Generation::Name kind = gen_policy->young_gen_spec()->name();
      switch (kind) {
        case Generation::DefNew:
          _minor_gc_manager = MemoryManager::get_copy_memory_manager();
--- 124,135 ----
  // The collector for GenCollectedHeap will have two memory managers.
  void MemoryService::add_gen_collected_heap_info(GenCollectedHeap* heap) {
    CollectorPolicy* policy = heap->collector_policy();
  
    assert(policy->is_generation_policy(), "Only support two generations");
    GenCollectorPolicy* gen_policy = policy->as_generation_policy();
+   guarantee(gen_policy->number_of_generations() == 2, "Only support two-generation heap");
    if (gen_policy != NULL) {
      Generation::Name kind = gen_policy->young_gen_spec()->name();
      switch (kind) {
        case Generation::DefNew:
          _minor_gc_manager = MemoryManager::get_copy_memory_manager();