/* * Copyright (C) 2012, 2016 higherfrequencytrading.com * Copyright (C) 2016 Roman Leventov * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation, either version 3 of the License. * * This program 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 Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package net.openhft.chronicle.hash.impl; import net.openhft.chronicle.core.OS; import net.openhft.chronicle.hash.impl.util.CanonicalRandomAccessFiles; import java.io.File; import java.io.IOException; public final class PersistedChronicleHashResources extends ChronicleHashResources { private File file; public PersistedChronicleHashResources(File file) { this.file = file; OS.memory().storeFence(); // Emulate final semantics of the file field } @Override void releaseMemoryResource(MemoryResource mapping) throws IOException { OS.unmap(mapping.address, mapping.size); } @Override Throwable releaseExtraSystemResources() { if (file == null) return null; Throwable thrown = null; try { CanonicalRandomAccessFiles.release(file); file = null; } catch (Throwable t) { thrown = t; } return thrown; } }