28 #include "logging/log.hpp"
29
30 G1YoungGenSizer::G1YoungGenSizer() : _sizer_kind(SizerDefaults), _adaptive_size(true),
31 _min_desired_young_length(0), _max_desired_young_length(0) {
32 if (FLAG_IS_CMDLINE(NewRatio)) {
33 if (FLAG_IS_CMDLINE(NewSize) || FLAG_IS_CMDLINE(MaxNewSize)) {
34 log_warning(gc, ergo)("-XX:NewSize and -XX:MaxNewSize override -XX:NewRatio");
35 } else {
36 _sizer_kind = SizerNewRatio;
37 _adaptive_size = false;
38 return;
39 }
40 }
41
42 if (NewSize > MaxNewSize) {
43 if (FLAG_IS_CMDLINE(MaxNewSize)) {
44 log_warning(gc, ergo)("NewSize (" SIZE_FORMAT "k) is greater than the MaxNewSize (" SIZE_FORMAT "k). "
45 "A new max generation size of " SIZE_FORMAT "k will be used.",
46 NewSize/K, MaxNewSize/K, NewSize/K);
47 }
48 MaxNewSize = NewSize;
49 }
50
51 if (FLAG_IS_CMDLINE(NewSize)) {
52 _min_desired_young_length = MAX2((uint) (NewSize / HeapRegion::GrainBytes),
53 1U);
54 if (FLAG_IS_CMDLINE(MaxNewSize)) {
55 _max_desired_young_length =
56 MAX2((uint) (MaxNewSize / HeapRegion::GrainBytes),
57 1U);
58 _sizer_kind = SizerMaxAndNewSize;
59 _adaptive_size = _min_desired_young_length != _max_desired_young_length;
60 } else {
61 _sizer_kind = SizerNewSizeOnly;
62 }
63 } else if (FLAG_IS_CMDLINE(MaxNewSize)) {
64 _max_desired_young_length =
65 MAX2((uint) (MaxNewSize / HeapRegion::GrainBytes),
66 1U);
67 _sizer_kind = SizerMaxNewSizeOnly;
68 }
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28 #include "logging/log.hpp"
29
30 G1YoungGenSizer::G1YoungGenSizer() : _sizer_kind(SizerDefaults), _adaptive_size(true),
31 _min_desired_young_length(0), _max_desired_young_length(0) {
32 if (FLAG_IS_CMDLINE(NewRatio)) {
33 if (FLAG_IS_CMDLINE(NewSize) || FLAG_IS_CMDLINE(MaxNewSize)) {
34 log_warning(gc, ergo)("-XX:NewSize and -XX:MaxNewSize override -XX:NewRatio");
35 } else {
36 _sizer_kind = SizerNewRatio;
37 _adaptive_size = false;
38 return;
39 }
40 }
41
42 if (NewSize > MaxNewSize) {
43 if (FLAG_IS_CMDLINE(MaxNewSize)) {
44 log_warning(gc, ergo)("NewSize (" SIZE_FORMAT "k) is greater than the MaxNewSize (" SIZE_FORMAT "k). "
45 "A new max generation size of " SIZE_FORMAT "k will be used.",
46 NewSize/K, MaxNewSize/K, NewSize/K);
47 }
48 FLAG_SET_ERGO(size_t, MaxNewSize, NewSize);
49 }
50
51 if (FLAG_IS_CMDLINE(NewSize)) {
52 _min_desired_young_length = MAX2((uint) (NewSize / HeapRegion::GrainBytes),
53 1U);
54 if (FLAG_IS_CMDLINE(MaxNewSize)) {
55 _max_desired_young_length =
56 MAX2((uint) (MaxNewSize / HeapRegion::GrainBytes),
57 1U);
58 _sizer_kind = SizerMaxAndNewSize;
59 _adaptive_size = _min_desired_young_length != _max_desired_young_length;
60 } else {
61 _sizer_kind = SizerNewSizeOnly;
62 }
63 } else if (FLAG_IS_CMDLINE(MaxNewSize)) {
64 _max_desired_young_length =
65 MAX2((uint) (MaxNewSize / HeapRegion::GrainBytes),
66 1U);
67 _sizer_kind = SizerMaxNewSizeOnly;
68 }
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