author | plevart |
Wed, 09 Mar 2016 21:17:06 +0100 | |
changeset 36435 | 0408881ad616 |
parent 33674 | 566777f73c32 |
child 37727 | f33cc7ee4a9c |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2008, 2013, 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 sun.nio.fs; |
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import java.io.IOException; |
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import java.nio.file.NotDirectoryException; |
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import java.nio.file.Path; |
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import java.nio.file.StandardWatchEventKinds; |
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import java.nio.file.WatchEvent; |
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import java.nio.file.WatchKey; |
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import java.util.HashMap; |
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import java.util.Map; |
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import java.util.Set; |
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import com.sun.nio.file.ExtendedWatchEventModifier; |
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import jdk.internal.misc.Unsafe; |
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import static sun.nio.fs.WindowsNativeDispatcher.*; |
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import static sun.nio.fs.WindowsConstants.*; |
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/* |
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* Win32 implementation of WatchService based on ReadDirectoryChangesW. |
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*/ |
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class WindowsWatchService |
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extends AbstractWatchService |
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{ |
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private static final int WAKEUP_COMPLETION_KEY = 0; |
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// background thread to service I/O completion port |
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private final Poller poller; |
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/** |
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* Creates an I/O completion port and a daemon thread to service it |
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*/ |
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WindowsWatchService(WindowsFileSystem fs) throws IOException { |
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// create I/O completion port |
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long port = 0L; |
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try { |
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port = CreateIoCompletionPort(INVALID_HANDLE_VALUE, 0, 0); |
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} catch (WindowsException x) { |
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throw new IOException(x.getMessage()); |
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} |
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this.poller = new Poller(fs, this, port); |
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this.poller.start(); |
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} |
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@Override |
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WatchKey register(Path path, |
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WatchEvent.Kind<?>[] events, |
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WatchEvent.Modifier... modifiers) |
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throws IOException |
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{ |
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// delegate to poller |
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return poller.register(path, events, modifiers); |
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} |
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@Override |
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void implClose() throws IOException { |
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// delegate to poller |
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poller.close(); |
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} |
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/** |
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* Windows implementation of WatchKey. |
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*/ |
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private static class WindowsWatchKey extends AbstractWatchKey { |
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// file key (used to detect existing registrations) |
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private final FileKey fileKey; |
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// handle to directory |
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private volatile long handle = INVALID_HANDLE_VALUE; |
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// interest events |
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private Set<? extends WatchEvent.Kind<?>> events; |
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// subtree |
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private boolean watchSubtree; |
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// buffer for change events |
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private NativeBuffer buffer; |
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// pointer to bytes returned (in buffer) |
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private long countAddress; |
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// pointer to overlapped structure (in buffer) |
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private long overlappedAddress; |
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// completion key (used to map I/O completion to WatchKey) |
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private int completionKey; |
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WindowsWatchKey(Path dir, |
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AbstractWatchService watcher, |
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FileKey fileKey) |
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{ |
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super(dir, watcher); |
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this.fileKey = fileKey; |
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} |
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WindowsWatchKey init(long handle, |
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Set<? extends WatchEvent.Kind<?>> events, |
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boolean watchSubtree, |
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NativeBuffer buffer, |
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long countAddress, |
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long overlappedAddress, |
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int completionKey) |
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{ |
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this.handle = handle; |
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this.events = events; |
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this.watchSubtree = watchSubtree; |
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this.buffer = buffer; |
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this.countAddress = countAddress; |
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this.overlappedAddress = overlappedAddress; |
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this.completionKey = completionKey; |
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return this; |
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} |
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141 |
|
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142 |
long handle() { |
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return handle; |
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} |
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145 |
|
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146 |
Set<? extends WatchEvent.Kind<?>> events() { |
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return events; |
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} |
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149 |
|
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150 |
void setEvents(Set<? extends WatchEvent.Kind<?>> events) { |
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this.events = events; |
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} |
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153 |
|
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boolean watchSubtree() { |
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return watchSubtree; |
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156 |
} |
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157 |
|
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158 |
NativeBuffer buffer() { |
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return buffer; |
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160 |
} |
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161 |
|
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162 |
long countAddress() { |
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return countAddress; |
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164 |
} |
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165 |
|
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166 |
long overlappedAddress() { |
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return overlappedAddress; |
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168 |
} |
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169 |
|
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170 |
FileKey fileKey() { |
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return fileKey; |
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172 |
} |
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173 |
|
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174 |
int completionKey() { |
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return completionKey; |
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176 |
} |
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177 |
|
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// Invalidate the key, assumes that resources have been released |
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void invalidate() { |
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((WindowsWatchService)watcher()).poller.releaseResources(this); |
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handle = INVALID_HANDLE_VALUE; |
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buffer = null; |
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countAddress = 0; |
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184 |
overlappedAddress = 0; |
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185 |
} |
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186 |
|
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187 |
@Override |
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188 |
public boolean isValid() { |
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return handle != INVALID_HANDLE_VALUE; |
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190 |
} |
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|
191 |
|
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192 |
@Override |
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public void cancel() { |
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|
194 |
if (isValid()) { |
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195 |
// delegate to poller |
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((WindowsWatchService)watcher()).poller.cancel(this); |
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197 |
} |
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198 |
} |
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199 |
} |
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|
200 |
|
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|
201 |
// file key to unique identify (open) directory |
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|
202 |
private static class FileKey { |
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|
203 |
private final int volSerialNumber; |
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|
204 |
private final int fileIndexHigh; |
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|
205 |
private final int fileIndexLow; |
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|
206 |
|
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207 |
FileKey(int volSerialNumber, int fileIndexHigh, int fileIndexLow) { |
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this.volSerialNumber = volSerialNumber; |
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this.fileIndexHigh = fileIndexHigh; |
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|
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this.fileIndexLow = fileIndexLow; |
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|
211 |
} |
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|
212 |
|
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213 |
@Override |
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|
214 |
public int hashCode() { |
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|
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return volSerialNumber ^ fileIndexHigh ^ fileIndexLow; |
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216 |
} |
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217 |
|
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218 |
@Override |
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219 |
public boolean equals(Object obj) { |
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220 |
if (obj == this) |
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221 |
return true; |
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222 |
if (!(obj instanceof FileKey)) |
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223 |
return false; |
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224 |
FileKey other = (FileKey)obj; |
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225 |
if (this.volSerialNumber != other.volSerialNumber) return false; |
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|
226 |
if (this.fileIndexHigh != other.fileIndexHigh) return false; |
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|
227 |
return this.fileIndexLow == other.fileIndexLow; |
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228 |
} |
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229 |
} |
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230 |
|
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231 |
// all change events |
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232 |
private static final int ALL_FILE_NOTIFY_EVENTS = |
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233 |
FILE_NOTIFY_CHANGE_FILE_NAME | |
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234 |
FILE_NOTIFY_CHANGE_DIR_NAME | |
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235 |
FILE_NOTIFY_CHANGE_ATTRIBUTES | |
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236 |
FILE_NOTIFY_CHANGE_SIZE | |
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237 |
FILE_NOTIFY_CHANGE_LAST_WRITE | |
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238 |
FILE_NOTIFY_CHANGE_CREATION | |
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|
239 |
FILE_NOTIFY_CHANGE_SECURITY; |
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240 |
|
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241 |
/** |
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242 |
* Background thread to service I/O completion port. |
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243 |
*/ |
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244 |
private static class Poller extends AbstractPoller { |
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245 |
private static final Unsafe UNSAFE = Unsafe.getUnsafe(); |
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|
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/* |
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* typedef struct _OVERLAPPED { |
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* ULONG_PTR Internal; |
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* ULONG_PTR InternalHigh; |
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* union { |
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* struct { DWORD Offset; DWORD OffsetHigh; }; |
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* PVOID Pointer; |
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254 |
* }; |
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255 |
* HANDLE hEvent; |
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* } OVERLAPPED; |
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*/ |
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private static final short SIZEOF_DWORD = 4; |
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private static final short SIZEOF_OVERLAPPED = 32; // 20 on 32-bit |
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private static final short OFFSETOF_HEVENT = |
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(UNSAFE.addressSize() == 4) ? (short) 16 : 24; |
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262 |
|
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263 |
|
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264 |
/* |
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* typedef struct _FILE_NOTIFY_INFORMATION { |
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* DWORD NextEntryOffset; |
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* DWORD Action; |
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* DWORD FileNameLength; |
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* WCHAR FileName[1]; |
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* } FileNameLength; |
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271 |
*/ |
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272 |
private static final short OFFSETOF_NEXTENTRYOFFSET = 0; |
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private static final short OFFSETOF_ACTION = 4; |
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private static final short OFFSETOF_FILENAMELENGTH = 8; |
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private static final short OFFSETOF_FILENAME = 12; |
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276 |
|
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277 |
// size of per-directory buffer for events (FIXME - make this configurable) |
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// Need to be less than 4*16384 = 65536. DWORD align. |
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private static final int CHANGES_BUFFER_SIZE = 16 * 1024; |
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|
280 |
|
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281 |
private final WindowsFileSystem fs; |
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|
282 |
private final WindowsWatchService watcher; |
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private final long port; |
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|
284 |
|
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|
285 |
// maps completion key to WatchKey |
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|
286 |
private final Map<Integer, WindowsWatchKey> ck2key; |
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|
287 |
|
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|
288 |
// maps file key to WatchKey |
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private final Map<FileKey, WindowsWatchKey> fk2key; |
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|
290 |
|
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|
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// unique completion key for each directory |
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// native completion key capacity is 64 bits on Win64. |
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|
293 |
private int lastCompletionKey; |
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|
294 |
|
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|
295 |
Poller(WindowsFileSystem fs, WindowsWatchService watcher, long port) { |
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|
296 |
this.fs = fs; |
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|
297 |
this.watcher = watcher; |
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|
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this.port = port; |
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|
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this.ck2key = new HashMap<>(); |
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|
300 |
this.fk2key = new HashMap<>(); |
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|
301 |
this.lastCompletionKey = 0; |
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|
302 |
} |
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|
303 |
|
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|
304 |
@Override |
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|
305 |
void wakeup() throws IOException { |
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|
306 |
try { |
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|
307 |
PostQueuedCompletionStatus(port, WAKEUP_COMPLETION_KEY); |
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|
308 |
} catch (WindowsException x) { |
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|
309 |
throw new IOException(x.getMessage()); |
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|
310 |
} |
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|
311 |
} |
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|
312 |
|
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|
313 |
/** |
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|
314 |
* Register a directory for changes as follows: |
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|
315 |
* |
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|
316 |
* 1. Open directory |
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|
317 |
* 2. Read its attributes (and check it really is a directory) |
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|
318 |
* 3. Assign completion key and associated handle with completion port |
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|
319 |
* 4. Call ReadDirectoryChangesW to start (async) read of changes |
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|
320 |
* 5. Create or return existing key representing registration |
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|
321 |
*/ |
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|
322 |
@Override |
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|
323 |
Object implRegister(Path obj, |
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|
324 |
Set<? extends WatchEvent.Kind<?>> events, |
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|
325 |
WatchEvent.Modifier... modifiers) |
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|
326 |
{ |
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|
327 |
WindowsPath dir = (WindowsPath)obj; |
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|
328 |
boolean watchSubtree = false; |
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|
329 |
|
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|
330 |
// FILE_TREE modifier allowed |
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|
331 |
for (WatchEvent.Modifier modifier: modifiers) { |
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|
332 |
if (modifier == ExtendedWatchEventModifier.FILE_TREE) { |
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|
333 |
watchSubtree = true; |
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|
334 |
} else { |
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changeset
|
335 |
if (modifier == null) |
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|
336 |
return new NullPointerException(); |
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|
337 |
if (modifier instanceof com.sun.nio.file.SensitivityWatchEventModifier) |
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|
338 |
continue; // ignore |
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|
339 |
return new UnsupportedOperationException("Modifier not supported"); |
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|
340 |
} |
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|
341 |
} |
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|
342 |
|
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|
343 |
// open directory |
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|
344 |
long handle; |
2057
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|
345 |
try { |
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|
346 |
handle = CreateFile(dir.getPathForWin32Calls(), |
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|
347 |
FILE_LIST_DIRECTORY, |
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|
348 |
(FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE), |
3acf8e5e2ca0
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|
349 |
OPEN_EXISTING, |
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|
350 |
FILE_FLAG_BACKUP_SEMANTICS | FILE_FLAG_OVERLAPPED); |
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|
351 |
} catch (WindowsException x) { |
3acf8e5e2ca0
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|
352 |
return x.asIOException(dir); |
3acf8e5e2ca0
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|
353 |
} |
3acf8e5e2ca0
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|
354 |
|
3acf8e5e2ca0
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|
355 |
boolean registered = false; |
3acf8e5e2ca0
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|
356 |
try { |
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|
357 |
// read attributes and check file is a directory |
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|
358 |
WindowsFileAttributes attrs; |
2057
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|
359 |
try { |
3acf8e5e2ca0
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|
360 |
attrs = WindowsFileAttributes.readAttributes(handle); |
3acf8e5e2ca0
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changeset
|
361 |
} catch (WindowsException x) { |
3acf8e5e2ca0
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|
362 |
return x.asIOException(dir); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
363 |
} |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
364 |
if (!attrs.isDirectory()) { |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
365 |
return new NotDirectoryException(dir.getPathForExceptionMessage()); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
366 |
} |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
367 |
|
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
368 |
// check if this directory is already registered |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
369 |
FileKey fk = new FileKey(attrs.volSerialNumber(), |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
370 |
attrs.fileIndexHigh(), |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
371 |
attrs.fileIndexLow()); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
372 |
WindowsWatchKey existing = fk2key.get(fk); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
373 |
|
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
374 |
// if already registered and we're not changing the subtree |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
375 |
// modifier then simply update the event and return the key. |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
376 |
if (existing != null && watchSubtree == existing.watchSubtree()) { |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
377 |
existing.setEvents(events); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
378 |
return existing; |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
379 |
} |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
380 |
|
17715
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
381 |
// Can overflow the int type capacity. |
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
382 |
// Skip WAKEUP_COMPLETION_KEY value. |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
383 |
int completionKey = ++lastCompletionKey; |
17715
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
384 |
if (completionKey == WAKEUP_COMPLETION_KEY) |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
385 |
completionKey = ++lastCompletionKey; |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
386 |
|
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
387 |
// associate handle with completion port |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
388 |
try { |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
389 |
CreateIoCompletionPort(handle, port, completionKey); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
390 |
} catch (WindowsException x) { |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
391 |
return new IOException(x.getMessage()); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
392 |
} |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
393 |
|
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
394 |
// allocate memory for events, including space for other structures |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
395 |
// needed to do overlapped I/O |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
396 |
int size = CHANGES_BUFFER_SIZE + SIZEOF_DWORD + SIZEOF_OVERLAPPED; |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
397 |
NativeBuffer buffer = NativeBuffers.getNativeBuffer(size); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
398 |
|
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
399 |
long bufferAddress = buffer.address(); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
400 |
long overlappedAddress = bufferAddress + size - SIZEOF_OVERLAPPED; |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
401 |
long countAddress = overlappedAddress - SIZEOF_DWORD; |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
402 |
|
26449
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
403 |
// zero the overlapped structure |
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
404 |
UNSAFE.setMemory(overlappedAddress, SIZEOF_OVERLAPPED, (byte)0); |
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
405 |
|
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
406 |
// start async read of changes to directory |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
407 |
try { |
26449
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
408 |
createAndAttachEvent(overlappedAddress); |
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
409 |
|
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
410 |
ReadDirectoryChangesW(handle, |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
411 |
bufferAddress, |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
412 |
CHANGES_BUFFER_SIZE, |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
413 |
watchSubtree, |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
414 |
ALL_FILE_NOTIFY_EVENTS, |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
415 |
countAddress, |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
416 |
overlappedAddress); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
417 |
} catch (WindowsException x) { |
26449
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
418 |
closeAttachedEvent(overlappedAddress); |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
419 |
buffer.release(); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
420 |
return new IOException(x.getMessage()); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
421 |
} |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
422 |
|
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
423 |
WindowsWatchKey watchKey; |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
424 |
if (existing == null) { |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
425 |
// not registered so create new watch key |
8158 | 426 |
watchKey = new WindowsWatchKey(dir, watcher, fk) |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
427 |
.init(handle, events, watchSubtree, buffer, countAddress, |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
428 |
overlappedAddress, completionKey); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
429 |
// map file key to watch key |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
430 |
fk2key.put(fk, watchKey); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
431 |
} else { |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
432 |
// directory already registered so need to: |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
433 |
// 1. remove mapping from old completion key to existing watch key |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
434 |
// 2. release existing key's resources (handle/buffer) |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
435 |
// 3. re-initialize key with new handle/buffer |
17715
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
436 |
ck2key.remove(existing.completionKey()); |
26449
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
437 |
releaseResources(existing); |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
438 |
watchKey = existing.init(handle, events, watchSubtree, buffer, |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
439 |
countAddress, overlappedAddress, completionKey); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
440 |
} |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
441 |
// map completion map to watch key |
17715
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
442 |
ck2key.put(completionKey, watchKey); |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
443 |
|
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
444 |
registered = true; |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
445 |
return watchKey; |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
446 |
|
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
447 |
} finally { |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
448 |
if (!registered) CloseHandle(handle); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
449 |
} |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
450 |
} |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
451 |
|
26449
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
452 |
/** |
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
453 |
* Cancels the outstanding I/O operation on the directory |
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
454 |
* associated with the given key and releases the associated |
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
455 |
* resources. |
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
456 |
*/ |
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
457 |
private void releaseResources(WindowsWatchKey key) { |
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
458 |
try { |
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
459 |
CancelIo(key.handle()); |
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
460 |
GetOverlappedResult(key.handle(), key.overlappedAddress()); |
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
461 |
} catch (WindowsException expected) { |
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
462 |
// expected as I/O operation has been cancelled |
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
463 |
} |
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
464 |
CloseHandle(key.handle()); |
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
465 |
closeAttachedEvent(key.overlappedAddress()); |
36435
0408881ad616
8149925: We don't need jdk.internal.ref.Cleaner any more - part1
plevart
parents:
33674
diff
changeset
|
466 |
key.buffer().free(); |
26449
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
467 |
} |
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
468 |
|
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
469 |
/** |
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
470 |
* Creates an unnamed event and set it as the hEvent field |
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
471 |
* in the given OVERLAPPED structure |
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
472 |
*/ |
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
473 |
private void createAndAttachEvent(long ov) throws WindowsException { |
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
474 |
long hEvent = CreateEvent(false, false); |
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
475 |
UNSAFE.putAddress(ov + OFFSETOF_HEVENT, hEvent); |
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
476 |
} |
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
477 |
|
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
478 |
/** |
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
479 |
* Closes the event attached to the given OVERLAPPED structure. A |
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
480 |
* no-op if there isn't an event attached. |
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
481 |
*/ |
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
482 |
private void closeAttachedEvent(long ov) { |
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
483 |
long hEvent = UNSAFE.getAddress(ov + OFFSETOF_HEVENT); |
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
484 |
if (hEvent != 0 && hEvent != INVALID_HANDLE_VALUE) |
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
485 |
CloseHandle(hEvent); |
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
486 |
} |
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
487 |
|
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
488 |
// cancel single key |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
489 |
@Override |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
490 |
void implCancelKey(WatchKey obj) { |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
491 |
WindowsWatchKey key = (WindowsWatchKey)obj; |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
492 |
if (key.isValid()) { |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
493 |
fk2key.remove(key.fileKey()); |
17715
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
494 |
ck2key.remove(key.completionKey()); |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
495 |
key.invalidate(); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
496 |
} |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
497 |
} |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
498 |
|
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
499 |
// close watch service |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
500 |
@Override |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
501 |
void implCloseAll() { |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
502 |
// cancel all keys |
26449
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
503 |
ck2key.values().forEach(WindowsWatchKey::invalidate); |
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
504 |
|
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
505 |
fk2key.clear(); |
17715
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
506 |
ck2key.clear(); |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
507 |
|
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
508 |
// close I/O completion port |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
509 |
CloseHandle(port); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
510 |
} |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
511 |
|
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
512 |
// Translate file change action into watch event |
26449
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
513 |
private WatchEvent.Kind<?> translateActionToEvent(int action) { |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
514 |
switch (action) { |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
515 |
case FILE_ACTION_MODIFIED : |
9679
d98ae8bc45fc
7042979: Rename StandardSocketOption and StandardWatchEventKind
alanb
parents:
9035
diff
changeset
|
516 |
return StandardWatchEventKinds.ENTRY_MODIFY; |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
517 |
|
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
518 |
case FILE_ACTION_ADDED : |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
519 |
case FILE_ACTION_RENAMED_NEW_NAME : |
9679
d98ae8bc45fc
7042979: Rename StandardSocketOption and StandardWatchEventKind
alanb
parents:
9035
diff
changeset
|
520 |
return StandardWatchEventKinds.ENTRY_CREATE; |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
521 |
|
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
522 |
case FILE_ACTION_REMOVED : |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
523 |
case FILE_ACTION_RENAMED_OLD_NAME : |
9679
d98ae8bc45fc
7042979: Rename StandardSocketOption and StandardWatchEventKind
alanb
parents:
9035
diff
changeset
|
524 |
return StandardWatchEventKinds.ENTRY_DELETE; |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
525 |
|
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
526 |
default : |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
527 |
return null; // action not recognized |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
528 |
} |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
529 |
} |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
530 |
|
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
531 |
// process events (list of FILE_NOTIFY_INFORMATION structures) |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
532 |
private void processEvents(WindowsWatchKey key, int size) { |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
533 |
long address = key.buffer().address(); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
534 |
|
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
535 |
int nextOffset; |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
536 |
do { |
26449
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
537 |
int action = UNSAFE.getInt(address + OFFSETOF_ACTION); |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
538 |
|
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
539 |
// map action to event |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
540 |
WatchEvent.Kind<?> kind = translateActionToEvent(action); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
541 |
if (key.events().contains(kind)) { |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
542 |
// copy the name |
26449
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
543 |
int nameLengthInBytes = UNSAFE.getInt(address + OFFSETOF_FILENAMELENGTH); |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
544 |
if ((nameLengthInBytes % 2) != 0) { |
26449
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
545 |
throw new AssertionError("FileNameLength is not a multiple of 2"); |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
546 |
} |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
547 |
char[] nameAsArray = new char[nameLengthInBytes/2]; |
26449
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
548 |
UNSAFE.copyMemory(null, address + OFFSETOF_FILENAME, nameAsArray, |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
549 |
Unsafe.ARRAY_CHAR_BASE_OFFSET, nameLengthInBytes); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
550 |
|
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
551 |
// create FileName and queue event |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
552 |
WindowsPath name = WindowsPath |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
553 |
.createFromNormalizedPath(fs, new String(nameAsArray)); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
554 |
key.signalEvent(kind, name); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
555 |
} |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
556 |
|
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
557 |
// next event |
26449
df1302c8e4bd
8029516: (fs) WatchKey cancel unreliable on Windows
alanb
parents:
25859
diff
changeset
|
558 |
nextOffset = UNSAFE.getInt(address + OFFSETOF_NEXTENTRYOFFSET); |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
559 |
address += (long)nextOffset; |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
560 |
} while (nextOffset != 0); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
561 |
} |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
562 |
|
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
563 |
/** |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
564 |
* Poller main loop |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
565 |
*/ |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
566 |
@Override |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
567 |
public void run() { |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
568 |
for (;;) { |
17715
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
569 |
CompletionStatus info; |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
570 |
try { |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
571 |
info = GetQueuedCompletionStatus(port); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
572 |
} catch (WindowsException x) { |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
573 |
// this should not happen |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
574 |
x.printStackTrace(); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
575 |
return; |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
576 |
} |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
577 |
|
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
578 |
// wakeup |
17715
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
579 |
if (info.completionKey() == WAKEUP_COMPLETION_KEY) { |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
580 |
boolean shutdown = processRequests(); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
581 |
if (shutdown) { |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
582 |
return; |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
583 |
} |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
584 |
continue; |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
585 |
} |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
586 |
|
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
587 |
// map completionKey to get WatchKey |
17715
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
588 |
WindowsWatchKey key = ck2key.get((int)info.completionKey()); |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
589 |
if (key == null) { |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
590 |
// We get here when a registration is changed. In that case |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
591 |
// the directory is closed which causes an event with the |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
592 |
// old completion key. |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
593 |
continue; |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
594 |
} |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
595 |
|
17715
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
596 |
boolean criticalError = false; |
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
597 |
int errorCode = info.error(); |
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
598 |
int messageSize = info.bytesTransferred(); |
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
599 |
if (errorCode == ERROR_NOTIFY_ENUM_DIR) { |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
600 |
// buffer overflow |
17715
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
601 |
key.signalEvent(StandardWatchEventKinds.OVERFLOW, null); |
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
602 |
} else if (errorCode != 0 && errorCode != ERROR_MORE_DATA) { |
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
603 |
// ReadDirectoryChangesW failed |
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
604 |
criticalError = true; |
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
605 |
} else { |
23887
7b2fb8d5f6be
8040262: (fs) Misc. typos in comments and implementation
alanb
parents:
23010
diff
changeset
|
606 |
// ERROR_MORE_DATA is a warning about incomplete |
17715
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
607 |
// data transfer over TCP/UDP stack. For the case |
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
608 |
// [messageSize] is zero in the most of cases. |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
609 |
|
17715
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
610 |
if (messageSize > 0) { |
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
611 |
// process non-empty events. |
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
612 |
processEvents(key, messageSize); |
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
613 |
} else if (errorCode == 0) { |
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
614 |
// insufficient buffer size |
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
615 |
// not described, but can happen. |
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
616 |
key.signalEvent(StandardWatchEventKinds.OVERFLOW, null); |
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
617 |
} |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
618 |
|
17715
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
619 |
// start read for next batch of changes |
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
620 |
try { |
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
621 |
ReadDirectoryChangesW(key.handle(), |
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
622 |
key.buffer().address(), |
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
623 |
CHANGES_BUFFER_SIZE, |
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
624 |
key.watchSubtree(), |
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
625 |
ALL_FILE_NOTIFY_EVENTS, |
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
626 |
key.countAddress(), |
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
627 |
key.overlappedAddress()); |
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
628 |
} catch (WindowsException x) { |
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
629 |
// no choice but to cancel key |
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
630 |
criticalError = true; |
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
631 |
} |
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
632 |
} |
9d2234cba0ff
8014394: (fs) WatchService failing when watching \\server\$d
uta
parents:
9679
diff
changeset
|
633 |
if (criticalError) { |
2057
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
634 |
implCancelKey(key); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
635 |
key.signal(); |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
636 |
} |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
637 |
} |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
638 |
} |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
639 |
} |
3acf8e5e2ca0
6781363: New I/O: Update socket-channel API to jsr203/nio2-b99
alanb
parents:
diff
changeset
|
640 |
} |