0N/A/*
2362N/A * Copyright (c) 2001, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
2362N/A * published by the Free Software Foundation. Oracle designates this
0N/A * particular file as subject to the "Classpath" exception as provided
2362N/A * by Oracle in the LICENSE file that accompanied this code.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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0N/A */
0N/A
0N/Apackage sun.nio.ch;
0N/A
0N/Aimport sun.misc.*;
0N/A
0N/A
0N/A/**
0N/A * Manipulates a native array of pollfd structs.
0N/A *
0N/A * @author Mike McCloskey
0N/A * @since 1.4
0N/A */
0N/A
0N/Aabstract class AbstractPollArrayWrapper {
0N/A
0N/A // Event masks
0N/A static final short POLLIN = 0x0001;
0N/A static final short POLLOUT = 0x0004;
0N/A static final short POLLERR = 0x0008;
0N/A static final short POLLHUP = 0x0010;
0N/A static final short POLLNVAL = 0x0020;
0N/A static final short POLLREMOVE = 0x0800;
0N/A
0N/A // Miscellaneous constants
0N/A static final short SIZE_POLLFD = 8;
0N/A static final short FD_OFFSET = 0;
0N/A static final short EVENT_OFFSET = 4;
0N/A static final short REVENT_OFFSET = 6;
0N/A
0N/A // The poll fd array
0N/A protected AllocatedNativeObject pollArray;
0N/A
0N/A // Number of valid entries in the pollArray
0N/A protected int totalChannels = 0;
0N/A
0N/A // Base address of the native pollArray
0N/A protected long pollArrayAddress;
0N/A
0N/A // Access methods for fd structures
0N/A int getEventOps(int i) {
0N/A int offset = SIZE_POLLFD * i + EVENT_OFFSET;
0N/A return pollArray.getShort(offset);
0N/A }
0N/A
0N/A int getReventOps(int i) {
0N/A int offset = SIZE_POLLFD * i + REVENT_OFFSET;
0N/A return pollArray.getShort(offset);
0N/A }
0N/A
0N/A int getDescriptor(int i) {
0N/A int offset = SIZE_POLLFD * i + FD_OFFSET;
0N/A return pollArray.getInt(offset);
0N/A }
0N/A
0N/A void putEventOps(int i, int event) {
0N/A int offset = SIZE_POLLFD * i + EVENT_OFFSET;
0N/A pollArray.putShort(offset, (short)event);
0N/A }
0N/A
0N/A void putReventOps(int i, int revent) {
0N/A int offset = SIZE_POLLFD * i + REVENT_OFFSET;
0N/A pollArray.putShort(offset, (short)revent);
0N/A }
0N/A
0N/A void putDescriptor(int i, int fd) {
0N/A int offset = SIZE_POLLFD * i + FD_OFFSET;
0N/A pollArray.putInt(offset, fd);
0N/A }
0N/A
0N/A}