jdk-24/src/hotspot/share/gc/shenandoah/shenandoahConcurrentRoots.cpp
Roman Kennke 553ea1e891 8242082: Shenandoah: Purge Traversal mode
Reviewed-by: shade
2020-04-03 15:06:08 +02:00

54 lines
1.8 KiB
C++

/*
* Copyright (c) 2019, 2020, Red Hat, Inc. 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
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
#include "precompiled.hpp"
#include "gc/shenandoah/shenandoahConcurrentRoots.hpp"
#include "gc/shenandoah/shenandoahHeap.inline.hpp"
bool ShenandoahConcurrentRoots::can_do_concurrent_roots() {
return true;
}
bool ShenandoahConcurrentRoots::should_do_concurrent_roots() {
return can_do_concurrent_roots() &&
!ShenandoahHeap::heap()->is_stw_gc_in_progress();
}
bool ShenandoahConcurrentRoots::can_do_concurrent_class_unloading() {
#if defined(X86) && !defined(SOLARIS)
return ShenandoahCodeRootsStyle == 2 &&
ClassUnloading;
#else
return false;
#endif
}
bool ShenandoahConcurrentRoots::should_do_concurrent_class_unloading() {
ShenandoahHeap* const heap = ShenandoahHeap::heap();
return can_do_concurrent_class_unloading() &&
heap->unload_classes() &&
!heap->is_stw_gc_in_progress();
}