1 /*

     2  * Copyright (c) 2019, Red Hat, Inc. All rights reserved.

     3  *

     4  * This code is free software; you can redistribute it and/or modify it

     5  * under the terms of the GNU General Public License version 2 only, as

     6  * published by the Free Software Foundation.

     7  *

     8  * This code is distributed in the hope that it will be useful, but WITHOUT

     9  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    10  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    11  * version 2 for more details (a copy is included in the LICENSE file that

    12  * accompanied this code).

    13  *

    14  * You should have received a copy of the GNU General Public License version

    15  * 2 along with this work; if not, write to the Free Software Foundation,

    16  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    17  *

    18  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    19  * or visit www.oracle.com if you need additional information or have any

    20  * questions.

    21  *

    22  */

    23 

    24 #include "precompiled.hpp"

    25 

    26 #include "gc/shenandoah/shenandoahConcurrentRoots.hpp"

    27 #include "gc/shenandoah/shenandoahHeap.inline.hpp"

    28 

    29 bool ShenandoahConcurrentRoots::can_do_concurrent_roots() {

    30   // Don't support traversal GC at this moment

    31   return !ShenandoahHeap::heap()->is_traversal_mode();

    32 }

    33 

    34 bool ShenandoahConcurrentRoots::should_do_concurrent_roots() {

    35   ShenandoahHeap* const heap = ShenandoahHeap::heap();

    36   bool stw_gc_in_progress = heap->is_full_gc_in_progress() ||

    37                             heap->is_degenerated_gc_in_progress();

    38   return can_do_concurrent_roots() &&

    39          !stw_gc_in_progress;

    40 }