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Do not use uninterruptible file channels in FileChannelUtil

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To avoid illegal access errors from incremental compilation on JDK 16+.

 #KT-45689 Fixed
 #KT-47152 Fixed
This commit is contained in:
Alexander Udalov
2021-07-23 20:53:48 +02:00
parent 2ca241c82c
commit fe18e3fa31
1 changed files with 4 additions and 57 deletions
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compiler/cli/src/com/intellij/util/io/FileChannelUtil.java
+4 -57
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@@ -1,66 +1,13 @@
// Copyright 2000-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
package com.intellij.util.io;
import com.intellij.openapi.diagnostic.Logger;
import com.intellij.util.ExceptionUtil;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodType;
import java.nio.channels.FileChannel;
final class FileChannelUtil {
private static final Logger LOG = Logger.getInstance(FileChannelUtil.class);
private static final Class<?> sunNioChFileChannelImpl = setupFileChannelImpl();
private static final MethodHandle setUnInterruptible = setupUnInterruptibleHandle();
private static Class<?> setupFileChannelImpl() {
try {
return Class.forName("sun.nio.ch.FileChannelImpl");
public final class FileChannelUtil {
@NotNull
static FileChannel unInterruptible(@NotNull FileChannel channel) {
return channel;
}
catch (ClassNotFoundException ignored) {}
return null;
}
@Nullable
private static MethodHandle setupUnInterruptibleHandle() {
MethodHandle setUnInterruptible = null;
try {
if (sunNioChFileChannelImpl != null) {
// noinspection SpellCheckingInspection
setUnInterruptible = MethodHandles
.lookup()
.findVirtual(sunNioChFileChannelImpl, "setUninterruptible", MethodType.methodType(void.class));
}
}
catch (NoSuchMethodException e) {
LOG.info("interruptible FileChannels will be used for indexes");
}
catch (IllegalAccessException e) {
LOG.error(e);
}
if (setUnInterruptible != null) {
LOG.info("uninterruptible FileChannels will be used for indexes");
}
else {
LOG.info("interruptible FileChannels will be used for indexes");
}
return setUnInterruptible;
}
@NotNull
static FileChannel unInterruptible(@NotNull FileChannel channel) {
try {
if (setUnInterruptible != null && sunNioChFileChannelImpl != null && sunNioChFileChannelImpl.isInstance(channel)) {
setUnInterruptible.invoke(channel);
}
}
catch (Throwable e) {
ExceptionUtil.rethrow(e);
}
return channel;
}
}