/*
* Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
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* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* 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).
*
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* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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package jdk.jfr.internal;
import java.io.IOException;
import java.util.ArrayList;
import java.util.LinkedHashSet;
import java.util.Set;
import jdk.jfr.internal.SecuritySupport.SafePath;
// This class keeps track of files that can't be deleted
// so they can a later staged be removed.
final class FilePurger {
private final static Set<SafePath> paths = new LinkedHashSet<>();
public synchronized static void add(SafePath p) {
paths.add(p);
if (paths.size() > 1000) {
removeOldest();
}
}
public synchronized static void purge() {
if (paths.isEmpty()) {
return;
}
for (SafePath p : new ArrayList<>(paths)) {
if (delete(p)) {
paths.remove(p);
}
}
}
private static void removeOldest() {
SafePath oldest = paths.iterator().next();
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