Java Code Examples for java.nio.channels.SelectionKey#readyOps()
The following examples show how to use
java.nio.channels.SelectionKey#readyOps() .
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Example 1
| Source File: NioEventLoop.java From netty4.0.27Learn with Apache License 2.0 | 5 votes |
|
private static void processSelectedKey(SelectionKey k, AbstractNioChannel ch) {
final NioUnsafe unsafe = ch.unsafe();
if (!k.isValid()) {
// close the channel if the key is not valid anymore
unsafe.close(unsafe.voidPromise());
return;
}
try {
int readyOps = k.readyOps();
// Also check for readOps of 0 to workaround possible JDK bug which may otherwise lead
// to a spin loop
if ((readyOps & (SelectionKey.OP_READ | SelectionKey.OP_ACCEPT)) != 0 || readyOps == 0) {
unsafe.read();
if (!ch.isOpen()) {
// Connection already closed - no need to handle write.
return;
}
}
if ((readyOps & SelectionKey.OP_WRITE) != 0) {
// Call forceFlush which will also take care of clear the OP_WRITE once there is nothing left to write
ch.unsafe().forceFlush();
}
if ((readyOps & SelectionKey.OP_CONNECT) != 0) {
// remove OP_CONNECT as otherwise Selector.select(..) will always return without blocking
// See https://github.com/netty/netty/issues/924
int ops = k.interestOps();
ops &= ~SelectionKey.OP_CONNECT;
k.interestOps(ops);
unsafe.finishConnect();
}
} catch (CancelledKeyException ignored) {
unsafe.close(unsafe.voidPromise());
}
}
Example 2
| Source File: NioProcessor.java From jane with GNU Lesser General Public License v3.0 | 5 votes |
|
@Override
public void accept(SelectionKey key) {
NioSession session = (NioSession)key.attachment();
int ops = key.readyOps();
if ((ops & SelectionKey.OP_READ) != 0)
session.read();
if ((ops & SelectionKey.OP_WRITE) != 0)
scheduleFlush(session);
}
Example 3
| Source File: Proxy.java From gemfirexd-oss with Apache License 2.0 | 5 votes |
|
String printSelectionOps(SelectionKey key) {
StringBuffer sb=new StringBuffer();
if ((key.readyOps() & SelectionKey.OP_ACCEPT) !=0)
sb.append("OP_ACCEPT ");
if ((key.readyOps() & SelectionKey.OP_CONNECT) !=0)
sb.append("OP_CONNECT ");
if ((key.readyOps() & SelectionKey.OP_READ) !=0)
sb.append("OP_READ ");
if ((key.readyOps() & SelectionKey.OP_WRITE) !=0)
sb.append("OP_WRITE ");
return sb.toString();
}
Example 4
| Source File: AbstractNioWorker.java From android-netty with Apache License 2.0 | 5 votes |
|
@Override
protected void process(Selector selector) throws IOException {
Set<SelectionKey> selectedKeys = selector.selectedKeys();
// check if the set is empty and if so just return to not create garbage by
// creating a new Iterator every time even if there is nothing to process.
// See https://github.com/netty/netty/issues/597
if (selectedKeys.isEmpty()) {
return;
}
for (Iterator<SelectionKey> i = selectedKeys.iterator(); i.hasNext();) {
SelectionKey k = i.next();
i.remove();
try {
int readyOps = k.readyOps();
if ((readyOps & SelectionKey.OP_READ) != 0 || readyOps == 0) {
if (!read(k)) {
// Connection already closed - no need to handle write.
continue;
}
}
if ((readyOps & SelectionKey.OP_WRITE) != 0) {
writeFromSelectorLoop(k);
}
} catch (CancelledKeyException e) {
close(k);
}
if (cleanUpCancelledKeys()) {
break; // break the loop to avoid ConcurrentModificationException
}
}
}
Example 5
| Source File: NIOReactor.java From tddl5 with Apache License 2.0 | 5 votes |
|
@Override
public void run() {
final Selector selector = this.selector;
for (;;) {
++reactCount;
try {
selector.select(1000L);
register(selector);
Set<SelectionKey> keys = selector.selectedKeys();
try {
for (SelectionKey key : keys) {
Object att = key.attachment();
if (att != null && key.isValid()) {
int readyOps = key.readyOps();
if ((readyOps & SelectionKey.OP_READ) != 0) {
read((NIOConnection) att);
} else if ((readyOps & SelectionKey.OP_WRITE) != 0) {
write((NIOConnection) att);
} else {
key.cancel();
}
} else {
key.cancel();
}
}
} finally {
keys.clear();
}
} catch (Throwable e) {
logger.warn(name, e);
}
}
}
Example 6
| Source File: Proxy.java From gemfirexd-oss with Apache License 2.0 | 5 votes |
|
String printSelectionOps(SelectionKey key) {
StringBuffer sb=new StringBuffer();
if ((key.readyOps() & SelectionKey.OP_ACCEPT) !=0)
sb.append("OP_ACCEPT ");
if ((key.readyOps() & SelectionKey.OP_CONNECT) !=0)
sb.append("OP_CONNECT ");
if ((key.readyOps() & SelectionKey.OP_READ) !=0)
sb.append("OP_READ ");
if ((key.readyOps() & SelectionKey.OP_WRITE) !=0)
sb.append("OP_WRITE ");
return sb.toString();
}
Example 7
| Source File: SocketNioSend.java From tomcatsrc with Apache License 2.0 | 4 votes |
|
public static void main(String[] args) throws Exception {
Selector selector;
synchronized (Selector.class) {
// Selector.open() isn't thread safe
// http://bugs.sun.com/view_bug.do?bug_id=6427854
// Affects 1.6.0_29, fixed in 1.7.0_01
selector = Selector.open();
}
Member mbr = new MemberImpl("localhost", 9999, 0);
ChannelData data = new ChannelData();
data.setOptions(Channel.SEND_OPTIONS_BYTE_MESSAGE);
data.setAddress(mbr);
byte[] buf = new byte[8192 * 4];
data.setMessage(new XByteBuffer(buf,false));
buf = XByteBuffer.createDataPackage(data);
int len = buf.length;
BigDecimal total = new BigDecimal((double)0);
BigDecimal bytes = new BigDecimal((double)len);
NioSender sender = new NioSender();
sender.setDestination(mbr);
sender.setDirectBuffer(true);
sender.setSelector(selector);
sender.setTxBufSize(1024*1024);
sender.connect();
sender.setMessage(buf);
System.out.println("Writing to 9999");
long start = 0;
double mb = 0;
boolean first = true;
int count = 0;
DecimalFormat df = new DecimalFormat("##.00");
while (count<100000) {
if (first) {
first = false;
start = System.currentTimeMillis();
}
sender.setMessage(buf);
int selectedKeys = 0;
try {
selectedKeys = selector.select(0);
} catch (Exception e) {
e.printStackTrace();
continue;
}
if (selectedKeys == 0) {
continue;
}
Iterator<SelectionKey> it = selector.selectedKeys().iterator();
while (it.hasNext()) {
SelectionKey sk = it.next();
it.remove();
try {
int readyOps = sk.readyOps();
sk.interestOps(sk.interestOps() & ~readyOps);
if (sender.process(sk, false)) {
total = total.add(bytes);
sender.reset();
sender.setMessage(buf);
mb += ( (double) len) / 1024 / 1024;
if ( ( (++count) % 10000) == 0) {
long time = System.currentTimeMillis();
double seconds = ( (double) (time - start)) / 1000;
System.out.println("Throughput " + df.format(mb / seconds) + " MB/seconds, total "+mb+" MB, total "+total+" bytes.");
}
}
} catch (Throwable t) {
t.printStackTrace();
return;
}
}
selector.selectedKeys().clear();
}
System.out.println("Complete, sleeping 15 seconds");
Thread.sleep(15000);
}
Example 8
| Source File: SocketNioValidateSend.java From tomcatsrc with Apache License 2.0 | 4 votes |
|
public static void main(String[] args) throws Exception {
Selector selector;
synchronized (Selector.class) {
// Selector.open() isn't thread safe
// http://bugs.sun.com/view_bug.do?bug_id=6427854
// Affects 1.6.0_29, fixed in 1.7.0_01
selector = Selector.open();
}
Member mbr = new MemberImpl("localhost", 9999, 0);
byte seq = 0;
byte[] buf = new byte[50000];
Arrays.fill(buf,seq);
int len = buf.length;
BigDecimal total = new BigDecimal((double)0);
BigDecimal bytes = new BigDecimal((double)len);
NioSender sender = new NioSender();
sender.setDestination(mbr);
sender.setDirectBuffer(true);
sender.setSelector(selector);
sender.connect();
sender.setMessage(buf);
System.out.println("Writing to 9999");
long start = 0;
double mb = 0;
boolean first = true;
int count = 0;
DecimalFormat df = new DecimalFormat("##.00");
while (count<100000) {
if (first) {
first = false;
start = System.currentTimeMillis();
}
sender.setMessage(buf);
int selectedKeys = 0;
try {
selectedKeys = selector.select(0);
} catch (Exception e) {
e.printStackTrace();
continue;
}
if (selectedKeys == 0) {
continue;
}
Iterator<SelectionKey> it = selector.selectedKeys().iterator();
while (it.hasNext()) {
SelectionKey sk = it.next();
it.remove();
try {
int readyOps = sk.readyOps();
sk.interestOps(sk.interestOps() & ~readyOps);
if (sender.process(sk, false)) {
total = total.add(bytes);
sender.reset();
seq++;
Arrays.fill(buf,seq);
sender.setMessage(buf);
mb += ( (double) len) / 1024 / 1024;
if ( ( (++count) % 10000) == 0) {
long time = System.currentTimeMillis();
double seconds = ( (double) (time - start)) / 1000;
System.out.println("Throughput " + df.format(mb / seconds) + " MB/seconds, total "+mb+" MB, total "+total+" bytes.");
}
}
} catch (Throwable t) {
t.printStackTrace();
return;
}
}
}
System.out.println("Complete, sleeping 15 seconds");
Thread.sleep(15000);
}
Example 9
| Source File: LotsOfCancels.java From openjdk-jdk8u with GNU General Public License v2.0 | 4 votes |
|
private void handleClients() throws Exception {
int selectCount = 0;
while (true) {
int createdCount = 0;
synchronized (this) {
if (connectionsNeeded > 0) {
while (connectionsNeeded > 0 && createdCount < 20) {
connectionsNeeded--;
createdCount++;
totalCreated++;
SocketChannel channel = SocketChannel.open();
channel.configureBlocking(false);
channel.connect(address);
if (!channel.finishConnect()) {
channel.register(selector,
SelectionKey.OP_CONNECT);
}
}
log("Started total of " +
totalCreated + " client connections");
Thread.sleep(200);
}
}
if (createdCount > 0) {
selector.selectNow();
} else {
selectCount++;
long startTime = System.nanoTime();
selector.select();
long duration = durationMillis(startTime);
log("Exited clientSelector.select(), loop #"
+ selectCount + ", duration = " + duration + "ms");
}
int keyCount = -1;
Iterator<SelectionKey> keys =
selector.selectedKeys().iterator();
while (keys.hasNext()) {
SelectionKey key = keys.next();
synchronized (key) {
keyCount++;
keys.remove();
if (!key.isValid()) {
log("Ignoring client key #" + keyCount);
continue;
}
int readyOps = key.readyOps();
if (readyOps == SelectionKey.OP_CONNECT) {
key.interestOps(0);
((SocketChannel) key.channel()).finishConnect();
} else {
log("readyOps() on client key #" + keyCount +
" returned " + readyOps);
}
}
}
}
}
Example 10
| Source File: NioSender.java From Tomcat7.0.67 with Apache License 2.0 | 4 votes |
|
/**
* State machine to send data
* @param key SelectionKey
* @return boolean
* @throws IOException
*/
public boolean process(SelectionKey key, boolean waitForAck) throws IOException {
int ops = key.readyOps();
key.interestOps(key.interestOps() & ~ops);
//in case disconnect has been called
if ((!isConnected()) && (!connecting)) throw new IOException("Sender has been disconnected, can't selection key.");
if ( !key.isValid() ) throw new IOException("Key is not valid, it must have been cancelled.");
if ( key.isConnectable() ) {
if ( socketChannel.finishConnect() ) {
completeConnect();
if ( current != null ) key.interestOps(key.interestOps() | SelectionKey.OP_WRITE);
return false;
} else {
//wait for the connection to finish
key.interestOps(key.interestOps() | SelectionKey.OP_CONNECT);
return false;
}//end if
} else if ( key.isWritable() ) {
boolean writecomplete = write(key);
if ( writecomplete ) {
//we are completed, should we read an ack?
if ( waitForAck ) {
//register to read the ack
key.interestOps(key.interestOps() | SelectionKey.OP_READ);
} else {
//if not, we are ready, setMessage will reregister us for another write interest
//do a health check, we have no way of verify a disconnected
//socket since we don't register for OP_READ on waitForAck=false
read(key);//this causes overhead
setRequestCount(getRequestCount()+1);
return true;
}
} else {
//we are not complete, lets write some more
key.interestOps(key.interestOps()|SelectionKey.OP_WRITE);
}//end if
} else if ( key.isReadable() ) {
boolean readcomplete = read(key);
if ( readcomplete ) {
setRequestCount(getRequestCount()+1);
return true;
} else {
key.interestOps(key.interestOps() | SelectionKey.OP_READ);
}//end if
} else {
//unknown state, should never happen
log.warn("Data is in unknown state. readyOps="+ops);
throw new IOException("Data is in unknown state. readyOps="+ops);
}//end if
return false;
}
Example 11
| Source File: SocketNioValidateSend.java From Tomcat7.0.67 with Apache License 2.0 | 4 votes |
|
public static void main(String[] args) throws Exception {
Selector selector;
synchronized (Selector.class) {
// Selector.open() isn't thread safe
// http://bugs.sun.com/view_bug.do?bug_id=6427854
// Affects 1.6.0_29, fixed in 1.7.0_01
selector = Selector.open();
}
Member mbr = new MemberImpl("localhost", 9999, 0);
byte seq = 0;
byte[] buf = new byte[50000];
Arrays.fill(buf,seq);
int len = buf.length;
BigDecimal total = new BigDecimal((double)0);
BigDecimal bytes = new BigDecimal((double)len);
NioSender sender = new NioSender();
sender.setDestination(mbr);
sender.setDirectBuffer(true);
sender.setSelector(selector);
sender.connect();
sender.setMessage(buf);
System.out.println("Writing to 9999");
long start = 0;
double mb = 0;
boolean first = true;
int count = 0;
DecimalFormat df = new DecimalFormat("##.00");
while (count<100000) {
if (first) {
first = false;
start = System.currentTimeMillis();
}
sender.setMessage(buf);
int selectedKeys = 0;
try {
selectedKeys = selector.select(0);
} catch (Exception e) {
e.printStackTrace();
continue;
}
if (selectedKeys == 0) {
continue;
}
Iterator<SelectionKey> it = selector.selectedKeys().iterator();
while (it.hasNext()) {
SelectionKey sk = it.next();
it.remove();
try {
int readyOps = sk.readyOps();
sk.interestOps(sk.interestOps() & ~readyOps);
if (sender.process(sk, false)) {
total = total.add(bytes);
sender.reset();
seq++;
Arrays.fill(buf,seq);
sender.setMessage(buf);
mb += ( (double) len) / 1024 / 1024;
if ( ( (++count) % 10000) == 0) {
long time = System.currentTimeMillis();
double seconds = ( (double) (time - start)) / 1000;
System.out.println("Throughput " + df.format(mb / seconds) + " MB/seconds, total "+mb+" MB, total "+total+" bytes.");
}
}
} catch (Throwable t) {
t.printStackTrace();
return;
}
}
}
System.out.println("Complete, sleeping 15 seconds");
Thread.sleep(15000);
}
Example 12
| Source File: LotsOfCancels.java From TencentKona-8 with GNU General Public License v2.0 | 4 votes |
|
private void handleClients() throws Exception {
int selectCount = 0;
while (true) {
int createdCount = 0;
synchronized (this) {
if (connectionsNeeded > 0) {
while (connectionsNeeded > 0 && createdCount < 20) {
connectionsNeeded--;
createdCount++;
totalCreated++;
SocketChannel channel = SocketChannel.open();
channel.configureBlocking(false);
channel.connect(address);
if (!channel.finishConnect()) {
channel.register(selector,
SelectionKey.OP_CONNECT);
}
}
log("Started total of " +
totalCreated + " client connections");
Thread.sleep(200);
}
}
if (createdCount > 0) {
selector.selectNow();
} else {
selectCount++;
long startTime = System.nanoTime();
selector.select();
long duration = durationMillis(startTime);
log("Exited clientSelector.select(), loop #"
+ selectCount + ", duration = " + duration + "ms");
}
int keyCount = -1;
Iterator<SelectionKey> keys =
selector.selectedKeys().iterator();
while (keys.hasNext()) {
SelectionKey key = keys.next();
synchronized (key) {
keyCount++;
keys.remove();
if (!key.isValid()) {
log("Ignoring client key #" + keyCount);
continue;
}
int readyOps = key.readyOps();
if (readyOps == SelectionKey.OP_CONNECT) {
key.interestOps(0);
((SocketChannel) key.channel()).finishConnect();
} else {
log("readyOps() on client key #" + keyCount +
" returned " + readyOps);
}
}
}
}
}
Example 13
| Source File: NioSenderTest.java From Tomcat7.0.67 with Apache License 2.0 | 4 votes |
|
public void run() {
while (true) {
int selectedKeys = 0;
try {
selectedKeys = selector.select(100);
// if ( selectedKeys == 0 ) {
// System.out.println("No registered interests. Sleeping for a second.");
// Thread.sleep(100);
} catch (Exception e) {
e.printStackTrace();
continue;
}
if (selectedKeys == 0) {
continue;
}
Iterator<SelectionKey> it = selector.selectedKeys().iterator();
while (it.hasNext()) {
SelectionKey sk = it.next();
it.remove();
try {
int readyOps = sk.readyOps();
sk.interestOps(sk.interestOps() & ~readyOps);
NioSender sender = (NioSender) sk.attachment();
if ( sender.process(sk, (testOptions&Channel.SEND_OPTIONS_USE_ACK)==Channel.SEND_OPTIONS_USE_ACK) ) {
System.out.println("Message completed for handler:"+sender);
Thread.sleep(2000);
sender.reset();
sender.setMessage(XByteBuffer.createDataPackage(getMessage(mbr)));
}
} catch (Throwable t) {
t.printStackTrace();
return;
}
}
}
}
Example 14
| Source File: LotsOfCancels.java From dragonwell8_jdk with GNU General Public License v2.0 | 4 votes |
|
private void handleClients() throws Exception {
int selectCount = 0;
while (true) {
int createdCount = 0;
synchronized (this) {
if (connectionsNeeded > 0) {
while (connectionsNeeded > 0 && createdCount < 20) {
connectionsNeeded--;
createdCount++;
totalCreated++;
SocketChannel channel = SocketChannel.open();
channel.configureBlocking(false);
channel.connect(address);
if (!channel.finishConnect()) {
channel.register(selector,
SelectionKey.OP_CONNECT);
}
}
log("Started total of " +
totalCreated + " client connections");
Thread.sleep(200);
}
}
if (createdCount > 0) {
selector.selectNow();
} else {
selectCount++;
long startTime = System.nanoTime();
selector.select();
long duration = durationMillis(startTime);
log("Exited clientSelector.select(), loop #"
+ selectCount + ", duration = " + duration + "ms");
}
int keyCount = -1;
Iterator<SelectionKey> keys =
selector.selectedKeys().iterator();
while (keys.hasNext()) {
SelectionKey key = keys.next();
synchronized (key) {
keyCount++;
keys.remove();
if (!key.isValid()) {
log("Ignoring client key #" + keyCount);
continue;
}
int readyOps = key.readyOps();
if (readyOps == SelectionKey.OP_CONNECT) {
key.interestOps(0);
((SocketChannel) key.channel()).finishConnect();
} else {
log("readyOps() on client key #" + keyCount +
" returned " + readyOps);
}
}
}
}
}
Example 15
| Source File: NioSender.java From tomcatsrc with Apache License 2.0 | 4 votes |
|
/**
* State machine to send data
* @param key SelectionKey
* @return boolean
* @throws IOException
*/
public boolean process(SelectionKey key, boolean waitForAck) throws IOException {
int ops = key.readyOps();
key.interestOps(key.interestOps() & ~ops);
//in case disconnect has been called
if ((!isConnected()) && (!connecting)) throw new IOException("Sender has been disconnected, can't selection key.");
if ( !key.isValid() ) throw new IOException("Key is not valid, it must have been cancelled.");
if ( key.isConnectable() ) {
if ( socketChannel.finishConnect() ) {
completeConnect();
if ( current != null ) key.interestOps(key.interestOps() | SelectionKey.OP_WRITE);
return false;
} else {
//wait for the connection to finish
key.interestOps(key.interestOps() | SelectionKey.OP_CONNECT);
return false;
}//end if
} else if ( key.isWritable() ) {
boolean writecomplete = write(key);
if ( writecomplete ) {
//we are completed, should we read an ack?
if ( waitForAck ) {
//register to read the ack
key.interestOps(key.interestOps() | SelectionKey.OP_READ);
} else {
//if not, we are ready, setMessage will reregister us for another write interest
//do a health check, we have no way of verify a disconnected
//socket since we don't register for OP_READ on waitForAck=false
read(key);//this causes overhead
setRequestCount(getRequestCount()+1);
return true;
}
} else {
//we are not complete, lets write some more
key.interestOps(key.interestOps()|SelectionKey.OP_WRITE);
}//end if
} else if ( key.isReadable() ) {
boolean readcomplete = read(key);
if ( readcomplete ) {
setRequestCount(getRequestCount()+1);
return true;
} else {
key.interestOps(key.interestOps() | SelectionKey.OP_READ);
}//end if
} else {
//unknown state, should never happen
log.warn("Data is in unknown state. readyOps="+ops);
throw new IOException("Data is in unknown state. readyOps="+ops);
}//end if
return false;
}
Example 16
| Source File: NioSenderTest.java From Tomcat8-Source-Read with MIT License | 4 votes |
|
public void run() {
while (true) {
int selectedKeys = 0;
try {
selectedKeys = selector.select(100);
// if ( selectedKeys == 0 ) {
// System.out.println("No registered interests. Sleeping for a second.");
// Thread.sleep(100);
} catch (Exception e) {
e.printStackTrace();
continue;
}
if (selectedKeys == 0) {
continue;
}
Iterator<SelectionKey> it = selector.selectedKeys().iterator();
while (it.hasNext()) {
SelectionKey sk = it.next();
it.remove();
try {
int readyOps = sk.readyOps();
sk.interestOps(sk.interestOps() & ~readyOps);
NioSender sender = (NioSender) sk.attachment();
if ( sender.process(sk, (testOptions&Channel.SEND_OPTIONS_USE_ACK)==Channel.SEND_OPTIONS_USE_ACK) ) {
System.out.println("Message completed for handler:"+sender);
Thread.sleep(2000);
sender.reset();
sender.setMessage(XByteBuffer.createDataPackage(getMessage(mbr)));
}
} catch (Throwable t) {
t.printStackTrace();
return;
}
}
}
}
Example 17
| Source File: LotsOfCancels.java From hottub with GNU General Public License v2.0 | 4 votes |
|
private void handleClients() throws Exception {
int selectCount = 0;
while (true) {
int createdCount = 0;
synchronized (this) {
if (connectionsNeeded > 0) {
while (connectionsNeeded > 0 && createdCount < 20) {
connectionsNeeded--;
createdCount++;
totalCreated++;
SocketChannel channel = SocketChannel.open();
channel.configureBlocking(false);
channel.connect(address);
if (!channel.finishConnect()) {
channel.register(selector,
SelectionKey.OP_CONNECT);
}
}
log("Started total of " +
totalCreated + " client connections");
Thread.sleep(200);
}
}
if (createdCount > 0) {
selector.selectNow();
} else {
selectCount++;
long startTime = System.nanoTime();
selector.select();
long duration = durationMillis(startTime);
log("Exited clientSelector.select(), loop #"
+ selectCount + ", duration = " + duration + "ms");
}
int keyCount = -1;
Iterator<SelectionKey> keys =
selector.selectedKeys().iterator();
while (keys.hasNext()) {
SelectionKey key = keys.next();
synchronized (key) {
keyCount++;
keys.remove();
if (!key.isValid()) {
log("Ignoring client key #" + keyCount);
continue;
}
int readyOps = key.readyOps();
if (readyOps == SelectionKey.OP_CONNECT) {
key.interestOps(0);
((SocketChannel) key.channel()).finishConnect();
} else {
log("readyOps() on client key #" + keyCount +
" returned " + readyOps);
}
}
}
}
}
Example 18
| Source File: LotsOfCancels.java From jdk8u-jdk with GNU General Public License v2.0 | 4 votes |
|
private void handleClients() throws Exception {
int selectCount = 0;
while (true) {
int createdCount = 0;
synchronized (this) {
if (connectionsNeeded > 0) {
while (connectionsNeeded > 0 && createdCount < 20) {
connectionsNeeded--;
createdCount++;
totalCreated++;
SocketChannel channel = SocketChannel.open();
channel.configureBlocking(false);
channel.connect(address);
if (!channel.finishConnect()) {
channel.register(selector,
SelectionKey.OP_CONNECT);
}
}
log("Started total of " +
totalCreated + " client connections");
Thread.sleep(200);
}
}
if (createdCount > 0) {
selector.selectNow();
} else {
selectCount++;
long startTime = System.nanoTime();
selector.select();
long duration = durationMillis(startTime);
log("Exited clientSelector.select(), loop #"
+ selectCount + ", duration = " + duration + "ms");
}
int keyCount = -1;
Iterator<SelectionKey> keys =
selector.selectedKeys().iterator();
while (keys.hasNext()) {
SelectionKey key = keys.next();
synchronized (key) {
keyCount++;
keys.remove();
if (!key.isValid()) {
log("Ignoring client key #" + keyCount);
continue;
}
int readyOps = key.readyOps();
if (readyOps == SelectionKey.OP_CONNECT) {
key.interestOps(0);
((SocketChannel) key.channel()).finishConnect();
} else {
log("readyOps() on client key #" + keyCount +
" returned " + readyOps);
}
}
}
}
}
Example 19
| Source File: SocketNioSend.java From Tomcat8-Source-Read with MIT License | 4 votes |
|
public static void main(String[] args) throws Exception {
Selector selector = Selector.open();
Member mbr = new MemberImpl("localhost", 9999, 0);
ChannelData data = new ChannelData();
data.setOptions(Channel.SEND_OPTIONS_BYTE_MESSAGE);
data.setAddress(mbr);
byte[] buf = new byte[8192 * 4];
data.setMessage(new XByteBuffer(buf,false));
buf = XByteBuffer.createDataPackage(data);
int len = buf.length;
BigDecimal total = new BigDecimal((double)0);
BigDecimal bytes = new BigDecimal((double)len);
NioSender sender = new NioSender();
sender.setDestination(mbr);
sender.setDirectBuffer(true);
sender.setSelector(selector);
sender.setTxBufSize(1024*1024);
sender.connect();
sender.setMessage(buf);
System.out.println("Writing to 9999");
long start = 0;
double mb = 0;
boolean first = true;
int count = 0;
DecimalFormat df = new DecimalFormat("##.00");
while (count<100000) {
if (first) {
first = false;
start = System.currentTimeMillis();
}
sender.setMessage(buf);
int selectedKeys = 0;
try {
selectedKeys = selector.select(0);
} catch (Exception e) {
e.printStackTrace();
continue;
}
if (selectedKeys == 0) {
continue;
}
Iterator<SelectionKey> it = selector.selectedKeys().iterator();
while (it.hasNext()) {
SelectionKey sk = it.next();
it.remove();
try {
int readyOps = sk.readyOps();
sk.interestOps(sk.interestOps() & ~readyOps);
if (sender.process(sk, false)) {
total = total.add(bytes);
sender.reset();
sender.setMessage(buf);
mb += ( (double) len) / 1024 / 1024;
if ( ( (++count) % 10000) == 0) {
long time = System.currentTimeMillis();
double seconds = ( (double) (time - start)) / 1000;
System.out.println("Throughput " + df.format(mb / seconds) + " MB/seconds, total "+mb+" MB, total "+total+" bytes.");
}
}
} catch (Throwable t) {
t.printStackTrace();
return;
}
}
selector.selectedKeys().clear();
}
System.out.println("Complete, sleeping 15 seconds");
Thread.sleep(15000);
}
Example 20
| Source File: NioSender.java From Tomcat8-Source-Read with MIT License | 4 votes |
|
/**
* State machine to send data.
* @param key The key to use
* @param waitForAck Wait for an ack
* @return <code>true</code> if the processing was successful
* @throws IOException An IO error occurred
*/
public boolean process(SelectionKey key, boolean waitForAck) throws IOException {
int ops = key.readyOps();
key.interestOps(key.interestOps() & ~ops);
//in case disconnect has been called
if ((!isConnected()) && (!connecting)) throw new IOException(sm.getString("nioSender.sender.disconnected"));
if ( !key.isValid() ) throw new IOException(sm.getString("nioSender.key.inValid"));
if ( key.isConnectable() ) {
if ( socketChannel.finishConnect() ) {
completeConnect();
if ( current != null ) key.interestOps(key.interestOps() | SelectionKey.OP_WRITE);
return false;
} else {
//wait for the connection to finish
key.interestOps(key.interestOps() | SelectionKey.OP_CONNECT);
return false;
}//end if
} else if ( key.isWritable() ) {
boolean writecomplete = write();
if ( writecomplete ) {
//we are completed, should we read an ack?
if ( waitForAck ) {
//register to read the ack
key.interestOps(key.interestOps() | SelectionKey.OP_READ);
} else {
//if not, we are ready, setMessage will reregister us for another write interest
//do a health check, we have no way of verify a disconnected
//socket since we don't register for OP_READ on waitForAck=false
read();//this causes overhead
setRequestCount(getRequestCount()+1);
return true;
}
} else {
//we are not complete, lets write some more
key.interestOps(key.interestOps()|SelectionKey.OP_WRITE);
}//end if
} else if ( key.isReadable() ) {
boolean readcomplete = read();
if ( readcomplete ) {
setRequestCount(getRequestCount()+1);
return true;
} else {
key.interestOps(key.interestOps() | SelectionKey.OP_READ);
}//end if
} else {
//unknown state, should never happen
log.warn(sm.getString("nioSender.unknown.state", Integer.toString(ops)));
throw new IOException(sm.getString("nioSender.unknown.state", Integer.toString(ops)));
}//end if
return false;
}
