archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-08-26 06:14:49 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

8027295: Free CSet takes ~50% of young pause time

Browse source 
Improve fast card cache iteration and avoid taking locks when freeing the collection set.

Reviewed-by: brutisso
This commit is contained in:
Thomas Schatzl 2014-03-17 10:13:18 +01:00
parent cde8aa670b
commit d3e28ca682
7 changed files with 54 additions and 13 deletions
Download patch file Download diff file Expand all files Collapse all files

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

@ -1,5 +1,5 @@
/*
* Copyright (c) 2001, 2013, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2001, 2014, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -205,7 +205,7 @@ void HeapRegion::reset_after_compaction() {
init_top_at_mark_start();
}
void HeapRegion::hr_clear(bool par, bool clear_space) {
void HeapRegion::hr_clear(bool par, bool clear_space, bool locked) {
assert(_humongous_type == NotHumongous,
"we should have already filtered out humongous regions");
assert(_humongous_start_region == NULL,
@ -223,7 +223,11 @@ void HeapRegion::hr_clear(bool par, bool clear_space) {
if (!par) {
// If this is parallel, this will be done later.
HeapRegionRemSet* hrrs = rem_set();
hrrs->clear();
if (locked) {
hrrs->clear_locked();
} else {
hrrs->clear();
}
_claimed = InitialClaimValue;
}
zero_marked_bytes();