1 /*
  2  * Copyright (c) 2002, 2020, Oracle and/or its affiliates. All rights reserved.
  3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  4  *
  5  * This code is free software; you can redistribute it and/or modify it
  6  * under the terms of the GNU General Public License version 2 only, as
  7  * published by the Free Software Foundation.
  8  *
  9  * This code is distributed in the hope that it will be useful, but WITHOUT
 10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 12  * version 2 for more details (a copy is included in the LICENSE file that
 13  * accompanied this code).
 14  *
 15  * You should have received a copy of the GNU General Public License version
 16  * 2 along with this work; if not, write to the Free Software Foundation,
 17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 18  *
 19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 20  * or visit www.oracle.com if you need additional information or have any
 21  * questions.
 22  *
 23  */
 24 
 25 #include "precompiled.hpp"
 26 #include "gc/shared/gcCause.hpp"
 27 
 28 const char* GCCause::to_string(GCCause::Cause cause) {
 29   switch (cause) {
 30     case _java_lang_system_gc:
 31       return "System.gc()";
 32 
 33     case _full_gc_alot:
 34       return "FullGCAlot";
 35 
 36     case _scavenge_alot:
 37       return "ScavengeAlot";
 38 
 39     case _allocation_profiler:
 40       return "Allocation Profiler";
 41 
 42     case _jvmti_force_gc:
 43       return "JvmtiEnv ForceGarbageCollection";
 44 
 45     case _gc_locker:
 46       return "GCLocker Initiated GC";
 47 
 48     case _heap_inspection:
 49       return "Heap Inspection Initiated GC";
 50 
 51     case _heap_dump:
 52       return "Heap Dump Initiated GC";
 53 
 54     case _wb_young_gc:
 55       return "WhiteBox Initiated Young GC";
 56 
 57     case _wb_conc_mark:
 58       return "WhiteBox Initiated Concurrent Mark";
 59 
 60     case _wb_full_gc:
 61       return "WhiteBox Initiated Full GC";
 62 
 63     case _wb_breakpoint:
 64       return "WhiteBox Initiated Run to Breakpoint";
 65 
 66     case _archive_time_gc:
 67       return "Full GC for -Xshare:dump";
 68 
 69     case _no_gc:
 70       return "No GC";
 71 
 72     case _allocation_failure:
 73       return "Allocation Failure";
 74 
 75     case _tenured_generation_full:
 76       return "Tenured Generation Full";
 77 
 78     case _metadata_GC_threshold:
 79       return "Metadata GC Threshold";
 80 
 81     case _metadata_GC_clear_soft_refs:
 82       return "Metadata GC Clear Soft References";
 83 
 84     case _old_generation_expanded_on_last_scavenge:
 85       return "Old Generation Expanded On Last Scavenge";
 86 
 87     case _old_generation_too_full_to_scavenge:
 88       return "Old Generation Too Full To Scavenge";
 89 
 90     case _adaptive_size_policy:
 91       return "Ergonomics";
 92 
 93     case _g1_inc_collection_pause:
 94       return "G1 Evacuation Pause";
 95 
 96     case _g1_compaction_pause:
 97       return "G1 Compaction Pause";
 98 
 99     case _g1_humongous_allocation:
100       return "G1 Humongous Allocation";
101 
102     case _g1_periodic_collection:
103       return "G1 Periodic Collection";
104 
105     case _g1_preventive_collection:
106       return "G1 Preventive Collection";
107 
108     case _dcmd_gc_run:
109       return "Diagnostic Command";
110 
111     case _shenandoah_allocation_failure_evac:
112       return "Allocation Failure During Evacuation";
113 
114     case _shenandoah_stop_vm:
115       return "Stopping VM";
116 
117     case _shenandoah_concurrent_gc:
118       return "Concurrent GC";
119 
120     case _shenandoah_upgrade_to_full_gc:
121       return "Upgrade To Full GC";
122 
123     case _z_timer:
124       return "Timer";
125 
126     case _z_warmup:
127       return "Warmup";
128 
129     case _z_allocation_rate:
130       return "Allocation Rate";
131 
132     case _z_allocation_stall:
133       return "Allocation Stall";
134 
135     case _z_proactive:
136       return "Proactive";
137 
138     case _z_high_usage:
139       return "High Usage";
140 
141     case _last_gc_cause:
142       return "ILLEGAL VALUE - last gc cause - ILLEGAL VALUE";
143 
144     default:
145       return "unknown GCCause";
146   }
147   ShouldNotReachHere();
148 }