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_stop_vm,

  77     _shenandoah_allocation_failure_evac,
  78     _shenandoah_concurrent_gc,
  79     _shenandoah_upgrade_to_full_gc,
  80 
  81     _last_ditch_collection,
  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::_jvmti_force_gc);
  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 

  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_stop_vm,
  77     _shenandoah_metadata_gc_clear_softrefs,
  78     _shenandoah_allocation_failure_evac,
  79     _shenandoah_concurrent_gc,
  80     _shenandoah_upgrade_to_full_gc,
  81 
  82     _last_ditch_collection,
  83     _last_gc_cause
  84   };
  85 
  86   inline static bool is_user_requested_gc(GCCause::Cause cause) {
  87     return (cause == GCCause::_java_lang_system_gc ||
  88             cause == GCCause::_jvmti_force_gc);
  89   }
  90 
  91   inline static bool is_serviceability_requested_gc(GCCause::Cause
  92                                                              cause) {
  93     return (cause == GCCause::_jvmti_force_gc ||
  94             cause == GCCause::_heap_inspection ||
  95             cause == GCCause::_heap_dump);
  96   }
  97