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8001424: G1: Rename certain G1-specific flags

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Rename G1DefaultMinNewGenPercent, G1DefaultMaxNewGenPercent, and G1OldCSetRegionLiveThresholdPercent to G1NewSizePercent, G1MaxNewSizePercent, and G1MixedGCLiveThresholdPercent respectively. The previous names are no longer accepted.

Reviewed-by: brutisso, ysr
This commit is contained in:
John Cuthbertson 2012-12-21 11:45:34 -08:00
parent 7cb614b0e5
commit 2df5f7cc5a
4 changed files with 24 additions and 23 deletions
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2
hotspot/src/share/vm/gc_implementation/g1/collectionSetChooser.cpp
View file

@ -85,7 +85,7 @@ CollectionSetChooser::CollectionSetChooser() :
_curr_index(0), _length(0), _first_par_unreserved_idx(0),
_region_live_threshold_bytes(0), _remaining_reclaimable_bytes(0) {
_region_live_threshold_bytes =
HeapRegion::GrainBytes * (size_t) G1OldCSetRegionLiveThresholdPercent / 100;
HeapRegion::GrainBytes * (size_t) G1MixedGCLiveThresholdPercent / 100;
}
#ifndef PRODUCT

10
hotspot/src/share/vm/gc_implementation/g1/g1CollectorPolicy.cpp
View file

@ -309,9 +309,9 @@ void G1CollectorPolicy::initialize_flags() {
}
G1YoungGenSizer::G1YoungGenSizer() : _sizer_kind(SizerDefaults), _adaptive_size(true) {
assert(G1DefaultMinNewGenPercent <= G1DefaultMaxNewGenPercent, "Min larger than max");
assert(G1DefaultMinNewGenPercent > 0 && G1DefaultMinNewGenPercent < 100, "Min out of bounds");
assert(G1DefaultMaxNewGenPercent > 0 && G1DefaultMaxNewGenPercent < 100, "Max out of bounds");
assert(G1NewSizePercent <= G1MaxNewSizePercent, "Min larger than max");
assert(G1NewSizePercent > 0 && G1NewSizePercent < 100, "Min out of bounds");
assert(G1MaxNewSizePercent > 0 && G1MaxNewSizePercent < 100, "Max out of bounds");
if (FLAG_IS_CMDLINE(NewRatio)) {
if (FLAG_IS_CMDLINE(NewSize) || FLAG_IS_CMDLINE(MaxNewSize)) {
@ -344,12 +344,12 @@ G1YoungGenSizer::G1YoungGenSizer() : _sizer_kind(SizerDefaults), _adaptive_size(
}
uint G1YoungGenSizer::calculate_default_min_length(uint new_number_of_heap_regions) {
uint default_value = (new_number_of_heap_regions * G1DefaultMinNewGenPercent) / 100;
uint default_value = (new_number_of_heap_regions * G1NewSizePercent) / 100;
return MAX2(1U, default_value);
}
uint G1YoungGenSizer::calculate_default_max_length(uint new_number_of_heap_regions) {
uint default_value = (new_number_of_heap_regions * G1DefaultMaxNewGenPercent) / 100;
uint default_value = (new_number_of_heap_regions * G1MaxNewSizePercent) / 100;
return MAX2(1U, default_value);
}

16
hotspot/src/share/vm/gc_implementation/g1/g1CollectorPolicy.hpp
View file

@ -94,18 +94,18 @@ class TraceGen1TimeData : public CHeapObj<mtGC> {
// will occur.
//
// If nothing related to the the young gen size is set on the command
// line we should allow the young gen to be between
// G1DefaultMinNewGenPercent and G1DefaultMaxNewGenPercent of the
// heap size. This means that every time the heap size changes the
// limits for the young gen size will be updated.
// line we should allow the young gen to be between G1NewSizePercent
// and G1MaxNewSizePercent of the heap size. This means that every time
// the heap size changes, the limits for the young gen size will be
// recalculated.
//
// If only -XX:NewSize is set we should use the specified value as the
// minimum size for young gen. Still using G1DefaultMaxNewGenPercent
// of the heap as maximum.
// minimum size for young gen. Still using G1MaxNewSizePercent of the
// heap as maximum.
//
// If only -XX:MaxNewSize is set we should use the specified value as the
// maximum size for young gen. Still using G1DefaultMinNewGenPercent
// of the heap as minimum.
// maximum size for young gen. Still using G1NewSizePercent of the heap
// as minimum.
//
// If -XX:NewSize and -XX:MaxNewSize are both specified we use these values.
// No updates when the heap size changes. There is a special case when

19
hotspot/src/share/vm/gc_implementation/g1/g1_globals.hpp
View file

@ -287,17 +287,18 @@
"The number of times we'll force an overflow during " \
"concurrent marking") \
\
experimental(uintx, G1DefaultMinNewGenPercent, 20, \
"Percentage (0-100) of the heap size to use as minimum " \
"young gen size.") \
experimental(uintx, G1NewSizePercent, 20, \
"Percentage (0-100) of the heap size to use as default " \
"minimum young gen size.") \
\
experimental(uintx, G1DefaultMaxNewGenPercent, 80, \
"Percentage (0-100) of the heap size to use as maximum " \
"young gen size.") \
experimental(uintx, G1MaxNewSizePercent, 80, \
"Percentage (0-100) of the heap size to use as default " \
" maximum young gen size.") \
\
experimental(uintx, G1OldCSetRegionLiveThresholdPercent, 90, \
"Threshold for regions to be added to the collection set. " \
"Regions with more live bytes than this will not be collected.") \
experimental(uintx, G1MixedGCLiveThresholdPercent, 90, \
"Threshold for regions to be considered for inclusion in the " \
"collection set of mixed GCs. " \
"Regions with live bytes exceeding this will not be collected.") \
\
product(uintx, G1HeapWastePercent, 5, \
"Amount of space, expressed as a percentage of the heap size, " \