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8252221: Use multiple workers for Parallel GC pre-touching

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Reviewed-by: kbarrett, tschatzl
This commit is contained in:
Amit Pawar 2020-10-15 07:22:38 +00:00 • committed by Thomas Schatzl
parent f44fc6defc
commit 9359ff03ae
10 changed files with 191 additions and 75 deletions
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11
src/hotspot/share/gc/parallel/psOldGen.cpp
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@ -131,7 +131,9 @@ void PSOldGen::initialize_work(const char* perf_data_name, int level) {
_object_space = new MutableSpace(virtual_space()->alignment());
object_space()->initialize(cmr,
SpaceDecorator::Clear,
SpaceDecorator::Mangle);
SpaceDecorator::Mangle,
MutableSpace::SetupPages,
&ParallelScavengeHeap::heap()->workers());
// Update the start_array
start_array()->set_covered_region(cmr);
@ -351,10 +353,15 @@ void PSOldGen::post_resize() {
start_array()->set_covered_region(new_memregion);
ParallelScavengeHeap::heap()->card_table()->resize_covered_region(new_memregion);
WorkGang* workers = Thread::current()->is_VM_thread() ?
&ParallelScavengeHeap::heap()->workers() : NULL;
// ALWAYS do this last!!
object_space()->initialize(new_memregion,
SpaceDecorator::DontClear,
SpaceDecorator::DontMangle);
SpaceDecorator::DontMangle,
MutableSpace::SetupPages,
workers);
assert(new_word_size == heap_word_size(object_space()->capacity_in_bytes()),
"Sanity");