8214259: Implementation: JEP 189: Shenandoah: A Low-Pause-Time Garbage Collector (Experimental)
Reviewed-by: kvn, roland, shade, coleenp, lmesnik, pliden, jgeorge, ihse, erikj
Contributed-by: Christine Flood <chf@redhat.com>, Aleksey Shipilev <shade@redhat.com>, Roland Westrelin <rwestrel@redhat.com>, Zhenygu Gu <zgu@redhat.com>, Andrew Haley <aph@redhat.com>, Andrew Dinn <adinn@redhat.com>, Mario Torre <mtorre@redhat.com>, Roman Kennke <rkennke@redhat.com>
/*
* Copyright (c) 2017, 2018, Red Hat, Inc. All rights reserved.
*
* 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.
*
*/
#ifndef SHARE_VM_GC_SHENANDOAH_SHENANDOAHALLOCTRACKER_HPP
#define SHARE_VM_GC_SHENANDOAH_SHENANDOAHALLOCTRACKER_HPP
#include "gc/shenandoah/shenandoahAllocRequest.hpp"
#include "gc/shenandoah/shenandoahNumberSeq.hpp"
#include "memory/allocation.hpp"
#include "utilities/ostream.hpp"
class ShenandoahAllocTracker : public CHeapObj<mtGC> {
private:
BinaryMagnitudeSeq _alloc_size[ShenandoahAllocRequest::_ALLOC_LIMIT];
BinaryMagnitudeSeq _alloc_latency[ShenandoahAllocRequest::_ALLOC_LIMIT];
public:
void record_alloc_latency(size_t words_size,
ShenandoahAllocRequest::Type _alloc_type,
double latency_us) {
_alloc_size[_alloc_type].add(words_size);
_alloc_latency[_alloc_type].add((size_t)latency_us);
}
void print_on(outputStream* out) const;
};
#endif // SHARE_VM_GC_SHENANDOAH_SHENANDOAHALLOCTRACKER_HPP