Thu, 21 Aug 2014 16:44:41 +0200
8055098: WB API should be extended to provide information about size and age of object.
Summary: Extend the WhiteBox API to provide information about the size and age of objects. Further add a mechanism to trigger a young GC.
Reviewed-by: tschatzl, sjohanss
Contributed-by: Leonid Mesnik <leonid.mesnik@oracle.com>
1 /*
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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23 */
25 #include "precompiled.hpp"
26 #include "gc_interface/gcCause.hpp"
28 const char* GCCause::to_string(GCCause::Cause cause) {
29 switch (cause) {
30 case _java_lang_system_gc:
31 return "System.gc()";
33 case _full_gc_alot:
34 return "FullGCAlot";
36 case _scavenge_alot:
37 return "ScavengeAlot";
39 case _allocation_profiler:
40 return "Allocation Profiler";
42 case _jvmti_force_gc:
43 return "JvmtiEnv ForceGarbageCollection";
45 case _gc_locker:
46 return "GCLocker Initiated GC";
48 case _heap_inspection:
49 return "Heap Inspection Initiated GC";
51 case _heap_dump:
52 return "Heap Dump Initiated GC";
54 case _wb_young_gc:
55 return "WhiteBox Initiated Young GC";
57 case _no_gc:
58 return "No GC";
60 case _allocation_failure:
61 return "Allocation Failure";
63 case _tenured_generation_full:
64 return "Tenured Generation Full";
66 case _metadata_GC_threshold:
67 return "Metadata GC Threshold";
69 case _cms_generation_full:
70 return "CMS Generation Full";
72 case _cms_initial_mark:
73 return "CMS Initial Mark";
75 case _cms_final_remark:
76 return "CMS Final Remark";
78 case _cms_concurrent_mark:
79 return "CMS Concurrent Mark";
81 case _old_generation_expanded_on_last_scavenge:
82 return "Old Generation Expanded On Last Scavenge";
84 case _old_generation_too_full_to_scavenge:
85 return "Old Generation Too Full To Scavenge";
87 case _adaptive_size_policy:
88 return "Ergonomics";
90 case _g1_inc_collection_pause:
91 return "G1 Evacuation Pause";
93 case _g1_humongous_allocation:
94 return "G1 Humongous Allocation";
96 case _last_ditch_collection:
97 return "Last ditch collection";
99 case _last_gc_cause:
100 return "ILLEGAL VALUE - last gc cause - ILLEGAL VALUE";
102 default:
103 return "unknown GCCause";
104 }
105 ShouldNotReachHere();
106 }