1 /* 2 * Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 * 25 */ 26 27 package jdk.internal.clang; 28 29 import jdk.incubator.foreign.MemorySegment; 30 31 import java.util.LinkedHashSet; 32 import java.util.Set; 33 34 class AllocationScope implements AutoCloseable { 35 private final Set<MemorySegment> segments = new LinkedHashSet<>(); 36 37 MemorySegment track(MemorySegment segment) { 38 if (!segments.add(segment)) { 39 throw new IllegalArgumentException("Attempt to track a memory segment twice"); 40 } 41 return segment; 42 } 43 44 void forget(MemorySegment segment) { 45 if (!segments.remove(segment)) { 46 throw new IllegalArgumentException("Attempt to forget a memory segment not tracked by this scope"); 47 } 48 } 49 50 @Override 51 public void close() { 52 var currentThread = Thread.currentThread(); 53 segments.stream() 54 .filter(ms -> ms.owner() == currentThread) 55 .forEach(MemorySegment::close); 56 } 57 }