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[#2414] Fix IllegalStateException when try to configure AbstractEpollChannel once it is deregistered

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Motivation:
AbstractEpollChannel.clearEpollIn() throws an IllegalStateException if a user tries to change the autoRead configuration for the Channel and the Channel is not registered on an EventLoop yet. This makes it for example impossible to set AUTO_READ to false via the ServerBootstrap as the configuration is modifed before the Channel is registered.

Modification:
Check if the Channel is registered and if not just modify the flags directly so they are respected once the Channel is registered

Result:
It is possible now to configure AUTO_READ via the ServerBootstrap
This commit is contained in:
Norman Maurer 2014-04-22 10:14:31 +02:00
parent 12ac35cd57
commit ee55d34cfe
1 changed files with 21 additions and 14 deletions
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35
transport-native-epoll/src/main/java/io/netty/channel/epoll/AbstractEpollChannel.java
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@ -105,21 +105,28 @@ abstract class AbstractEpollChannel extends AbstractChannel {
}
final void clearEpollIn() {
final EventLoop loop = eventLoop();
final AbstractEpollUnsafe unsafe = (AbstractEpollUnsafe) unsafe();
if (loop.inEventLoop()) {
unsafe.clearEpollIn0();
} else {
// schedule a task to clear the EPOLLIN as it is not safe to modify it directly
loop.execute(new OneTimeTask() {
@Override
public void run() {
if (!config().isAutoRead() && !unsafe.readPending) {
// Still no read triggered so clear it now
unsafe.clearEpollIn0();
// Only clear if registered with an EventLoop as otherwise
if (isRegistered()) {
final EventLoop loop = eventLoop();
final AbstractEpollUnsafe unsafe = (AbstractEpollUnsafe) unsafe();
if (loop.inEventLoop()) {
unsafe.clearEpollIn0();
} else {
// schedule a task to clear the EPOLLIN as it is not safe to modify it directly
loop.execute(new OneTimeTask() {
@Override
public void run() {
if (!config().isAutoRead() && !unsafe.readPending) {
// Still no read triggered so clear it now
unsafe.clearEpollIn0();
}
}
}
});
});
}
} else {
// The EventLoop is not registered atm so just update the flags so the correct value
// will be used once the channel is registered
flags &= ~readFlag;
}
}