56     _no_cause_specified,
  57     _allocation_failure,
  58 
  59     /* implementation specific */
  60 
  61     _tenured_generation_full,
  62     _metadata_GC_threshold,
  63 
  64     _cms_generation_full,
  65     _cms_initial_mark,
  66     _cms_final_remark,
  67     _cms_concurrent_mark,
  68 
  69     _old_generation_expanded_on_last_scavenge,
  70     _old_generation_too_full_to_scavenge,
  71     _adaptive_size_policy,
  72 
  73     _g1_inc_collection_pause,
  74     _g1_humongous_allocation,
  75 


  76     _last_ditch_collection,
  77 
  78     _dcmd_gc_run,
  79 
  80     _last_gc_cause
  81   };
  82 
  83   inline static bool is_user_requested_gc(GCCause::Cause cause) {
  84     return (cause == GCCause::_java_lang_system_gc ||
  85             cause == GCCause::_dcmd_gc_run);
  86   }
  87 
  88   inline static bool is_serviceability_requested_gc(GCCause::Cause
  89                                                              cause) {
  90     return (cause == GCCause::_jvmti_force_gc ||
  91             cause == GCCause::_heap_inspection ||
  92             cause == GCCause::_heap_dump);
  93   }
  94 
  95   // Causes for collection of the tenured gernation

  56     _no_cause_specified,
  57     _allocation_failure,
  58 
  59     /* implementation specific */
  60 
  61     _tenured_generation_full,
  62     _metadata_GC_threshold,
  63 
  64     _cms_generation_full,
  65     _cms_initial_mark,
  66     _cms_final_remark,
  67     _cms_concurrent_mark,
  68 
  69     _old_generation_expanded_on_last_scavenge,
  70     _old_generation_too_full_to_scavenge,
  71     _adaptive_size_policy,
  72 
  73     _g1_inc_collection_pause,
  74     _g1_humongous_allocation,
  75 
  76     _shenandoah_init_mark,
  77 
  78     _last_ditch_collection,
  79 
  80     _dcmd_gc_run,
  81 
  82     _last_gc_cause
  83   };
  84 
  85   inline static bool is_user_requested_gc(GCCause::Cause cause) {
  86     return (cause == GCCause::_java_lang_system_gc ||
  87             cause == GCCause::_dcmd_gc_run);
  88   }
  89 
  90   inline static bool is_serviceability_requested_gc(GCCause::Cause
  91                                                              cause) {
  92     return (cause == GCCause::_jvmti_force_gc ||
  93             cause == GCCause::_heap_inspection ||
  94             cause == GCCause::_heap_dump);
  95   }
  96 
  97   // Causes for collection of the tenured gernation