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8223353: (ch) Change channel close implementation to not wait for I/O threads

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Reviewed-by: dfuchs, chegar
This commit is contained in:
Alan Bateman 2019-05-08 08:15:04 +01:00
parent 260ae30b14
commit 94d1d0d3d4
6 changed files with 478 additions and 669 deletions
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13
src/java.base/share/classes/java/nio/channels/spi/AbstractInterruptibleChannel.java
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@ -30,7 +30,6 @@ import java.nio.channels.AsynchronousCloseException;
import java.nio.channels.Channel;
import java.nio.channels.ClosedByInterruptException;
import java.nio.channels.InterruptibleChannel;
import java.util.concurrent.locks.ReentrantLock;
import jdk.internal.access.SharedSecrets;
import sun.nio.ch.Interruptible;
@ -86,7 +85,7 @@ import sun.nio.ch.Interruptible;
public abstract class AbstractInterruptibleChannel
implements Channel, InterruptibleChannel
{
private final ReentrantLock closeLock = new ReentrantLock();
private final Object closeLock = new Object();
private volatile boolean closed;
/**
@ -106,14 +105,11 @@ public abstract class AbstractInterruptibleChannel
* If an I/O error occurs
*/
public final void close() throws IOException {
closeLock.lock();
try {
synchronized (closeLock) {
if (closed)
return;
closed = true;
implCloseChannel();
} finally {
closeLock.unlock();
}
}
@ -157,8 +153,7 @@ public abstract class AbstractInterruptibleChannel
if (interruptor == null) {
interruptor = new Interruptible() {
public void interrupt(Thread target) {
closeLock.lock();
try {
synchronized (closeLock) {
if (closed)
return;
closed = true;
@ -166,8 +161,6 @@ public abstract class AbstractInterruptibleChannel
try {
AbstractInterruptibleChannel.this.implCloseChannel();
} catch (IOException x) { }
} finally {
closeLock.unlock();
}
}};
}