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8139277: Remove ScavengeWithObjectsInToSpace, ParallelOldGCSplitALot, ParallelOldGCSplitInterval, PSAdjustTenuredGenForMinorPause and PSAdjustYoungGenForMajorPause

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Reviewed-by: tschatzl, sjohanss
This commit is contained in:
David Lindholm 2015-10-16 14:11:29 +02:00
parent 4500c7fac8
commit 65e88c8313
7 changed files with 14 additions and 385 deletions
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36
hotspot/src/share/vm/gc/parallel/psScavenge.cpp
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@ -297,11 +297,6 @@ bool PSScavenge::invoke_no_policy() {
young_gen->eden_space()->accumulate_statistics();
}
if (ZapUnusedHeapArea) {
// Save information needed to minimize mangling
heap->record_gen_tops_before_GC();
}
heap->print_heap_before_gc();
heap->trace_heap_before_gc(&_gc_tracer);
@ -344,13 +339,10 @@ bool PSScavenge::invoke_no_policy() {
CardTableExtension::verify_all_young_refs_imprecise();
}
if (!ScavengeWithObjectsInToSpace) {
assert(young_gen->to_space()->is_empty(),
"Attempt to scavenge with live objects in to_space");
young_gen->to_space()->clear(SpaceDecorator::Mangle);
} else if (ZapUnusedHeapArea) {
young_gen->to_space()->mangle_unused_area();
}
assert(young_gen->to_space()->is_empty(),
"Attempt to scavenge with live objects in to_space");
young_gen->to_space()->clear(SpaceDecorator::Mangle);
save_to_space_top_before_gc();
COMPILER2_PRESENT(DerivedPointerTable::clear());
@ -677,12 +669,6 @@ bool PSScavenge::invoke_no_policy() {
heap->print_heap_after_gc();
heap->trace_heap_after_gc(&_gc_tracer);
if (ZapUnusedHeapArea) {
young_gen->eden_space()->check_mangled_unused_area_complete();
young_gen->from_space()->check_mangled_unused_area_complete();
young_gen->to_space()->check_mangled_unused_area_complete();
}
scavenge_exit.update();
if (PrintGCTaskTimeStamps) {
@ -764,15 +750,13 @@ bool PSScavenge::should_attempt_scavenge() {
PSYoungGen* young_gen = heap->young_gen();
PSOldGen* old_gen = heap->old_gen();
if (!ScavengeWithObjectsInToSpace) {
// Do not attempt to promote unless to_space is empty
if (!young_gen->to_space()->is_empty()) {
_consecutive_skipped_scavenges++;
if (UsePerfData) {
counters->update_scavenge_skipped(to_space_not_empty);
}
return false;
// Do not attempt to promote unless to_space is empty
if (!young_gen->to_space()->is_empty()) {
_consecutive_skipped_scavenges++;
if (UsePerfData) {
counters->update_scavenge_skipped(to_space_not_empty);
}
return false;
}
// Test to see if the scavenge will likely fail.