64 lines
2.3 KiB
Java
64 lines
2.3 KiB
Java
/*
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* Copyright (c) 2023, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package jdk.internal.foreign;
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import java.lang.foreign.Arena;
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import java.lang.foreign.MemoryLayout;
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import java.lang.foreign.MemorySegment;
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import java.lang.foreign.MemorySegment.Scope;
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import java.util.Objects;
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public final class ArenaImpl implements Arena {
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private final MemorySessionImpl session;
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private final boolean shouldReserveMemory;
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ArenaImpl(MemorySessionImpl session) {
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this.session = session;
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shouldReserveMemory = session instanceof ImplicitSession;
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}
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@Override
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public Scope scope() {
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return session;
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}
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@Override
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public void close() {
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session.close();
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}
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public MemorySegment allocateNoInit(long byteSize, long byteAlignment) {
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Utils.checkAllocationSizeAndAlign(byteSize, byteAlignment);
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return SegmentFactories.allocateSegment(byteSize, byteAlignment, session, shouldReserveMemory);
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}
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@Override
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public MemorySegment allocate(long byteSize, long byteAlignment) {
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MemorySegment segment = allocateNoInit(byteSize, byteAlignment);
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return segment.fill((byte)0);
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}
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}
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