46 experimental(size_t, ShenandoahTargetNumRegions, 2048, \
47 "With automatic region sizing, this is the approximate number " \
48 "of regions that would be used, within min/max region size " \
49 "limits.") \
50 \
51 experimental(size_t, ShenandoahMinRegionSize, 256 * K, \
52 "With automatic region sizing, the regions would be at least " \
53 "this large.") \
54 \
55 experimental(size_t, ShenandoahMaxRegionSize, 32 * M, \
56 "With automatic region sizing, the regions would be at most " \
57 "this large.") \
58 \
59 experimental(intx, ShenandoahHumongousThreshold, 100, \
60 "Humongous objects are allocated in separate regions. " \
61 "This setting defines how large the object should be to be " \
62 "deemed humongous. Value is in percents of heap region size. " \
63 "This also caps the maximum TLAB size.") \
64 range(1, 100) \
65 \
66 experimental(ccstr, ShenandoahGCMode, "satb", \
67 "GC mode to use. Among other things, this defines which " \
68 "barriers are in in use. Possible values are:" \
69 " satb - snapshot-at-the-beginning concurrent GC (three pass mark-evac-update);" \
70 " iu - incremental-update concurrent GC (three pass mark-evac-update);" \
71 " passive - stop the world GC only (either degenerated or full)") \
72 \
73 experimental(ccstr, ShenandoahGCHeuristics, "adaptive", \
74 "GC heuristics to use. This fine-tunes the GC mode selected, " \
75 "by choosing when to start the GC, how much to process on each " \
76 "cycle, and what other features to automatically enable. " \
77 "Possible values are:" \
78 " adaptive - adapt to maintain the given amount of free heap " \
79 "at all times, even during the GC cycle;" \
80 " static - trigger GC when free heap falls below the threshold;" \
81 " aggressive - run GC continuously, try to evacuate everything;" \
82 " compact - run GC more frequently and with deeper targets to " \
83 "free up more memory.") \
84 \
85 experimental(uintx, ShenandoahRefProcFrequency, 5, \
86 "Process process weak (soft, phantom, finalizers) references " \
87 "every Nth cycle. Normally affects concurrent GC cycles only, " \
88 "as degenerated and full GCs would try to process references " \
89 "regardless. Set to zero to disable reference processing " \
90 "completely.") \
91 \
92 experimental(uintx, ShenandoahUnloadClassesFrequency, 1, \
93 "Unload the classes every Nth cycle. Normally affects concurrent "\
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46 experimental(size_t, ShenandoahTargetNumRegions, 2048, \
47 "With automatic region sizing, this is the approximate number " \
48 "of regions that would be used, within min/max region size " \
49 "limits.") \
50 \
51 experimental(size_t, ShenandoahMinRegionSize, 256 * K, \
52 "With automatic region sizing, the regions would be at least " \
53 "this large.") \
54 \
55 experimental(size_t, ShenandoahMaxRegionSize, 32 * M, \
56 "With automatic region sizing, the regions would be at most " \
57 "this large.") \
58 \
59 experimental(intx, ShenandoahHumongousThreshold, 100, \
60 "Humongous objects are allocated in separate regions. " \
61 "This setting defines how large the object should be to be " \
62 "deemed humongous. Value is in percents of heap region size. " \
63 "This also caps the maximum TLAB size.") \
64 range(1, 100) \
65 \
66 product(ccstr, ShenandoahGCMode, "satb", \
67 "GC mode to use. Among other things, this defines which " \
68 "barriers are in in use. Possible values are:" \
69 " satb - snapshot-at-the-beginning concurrent GC (three pass mark-evac-update);" \
70 " iu - incremental-update concurrent GC (three pass mark-evac-update);" \
71 " passive - stop the world GC only (either degenerated or full)") \
72 \
73 product(ccstr, ShenandoahGCHeuristics, "adaptive", \
74 "GC heuristics to use. This fine-tunes the GC mode selected, " \
75 "by choosing when to start the GC, how much to process on each " \
76 "cycle, and what other features to automatically enable. " \
77 "Possible values are:" \
78 " adaptive - adapt to maintain the given amount of free heap " \
79 "at all times, even during the GC cycle;" \
80 " static - trigger GC when free heap falls below the threshold;" \
81 " aggressive - run GC continuously, try to evacuate everything;" \
82 " compact - run GC more frequently and with deeper targets to " \
83 "free up more memory.") \
84 \
85 experimental(uintx, ShenandoahRefProcFrequency, 5, \
86 "Process process weak (soft, phantom, finalizers) references " \
87 "every Nth cycle. Normally affects concurrent GC cycles only, " \
88 "as degenerated and full GCs would try to process references " \
89 "regardless. Set to zero to disable reference processing " \
90 "completely.") \
91 \
92 experimental(uintx, ShenandoahUnloadClassesFrequency, 1, \
93 "Unload the classes every Nth cycle. Normally affects concurrent "\
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