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ports/java/openjdk7/files/patch-zzz-nio-kqueue
Greg Lewis be29271c63 . Update to Build 121.
2010-12-14 23:37:29 +00:00

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--- jdk/src/share/classes/sun/nio/ch/KqueueSelectorProvider.java (revision 0)
+++ jdk/src/share/classes/sun/nio/ch/KqueueSelectorProvider.java (revision 16)
@@ -0,0 +1,17 @@
+package sun.nio.ch;
+
+import java.io.IOException;
+import java.nio.channels.*;
+import java.nio.channels.spi.*;
+
+public class KqueueSelectorProvider
+ extends SelectorProviderImpl
+{
+ public AbstractSelector openSelector() throws IOException {
+ return new KqueueSelectorImpl(this);
+ }
+
+ public Channel inheritedChannel() throws IOException {
+ return InheritedChannel.getChannel();
+ }
+}
--- jdk/src/solaris/native/sun/nio/ch/KqueuePort.c (revision 0)
+++ jdk/src/solaris/native/sun/nio/ch/KqueuePort.c (revision 16)
@@ -0,0 +1,67 @@
+/*
+ * Scratched by davidxu@freebsd.org
+ */
+
+#include "jni.h"
+#include "jni_util.h"
+#include "jvm.h"
+#include "jlong.h"
+#include "nio_util.h"
+
+#include "sun_nio_ch_KqueuePort.h"
+
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+JNIEXPORT void JNICALL
+Java_sun_nio_ch_KqueuePort_socketpair
+ (JNIEnv *env, jclass cls, jintArray sv)
+{
+ int sp[2];
+ if (socketpair(PF_UNIX, SOCK_STREAM, 0, sp) == -1) {
+ JNU_ThrowIOExceptionWithLastError(env, "socketpair failed");
+ } else {
+ jint res[2];
+ res[0] = (jint)sp[0];
+ res[1] = (jint)sp[1];
+ (*env)->SetIntArrayRegion(env, sv, 0, 2, &res[0]);
+ }
+}
+
+JNIEXPORT void JNICALL Java_sun_nio_ch_KqueuePort_interrupt
+ (JNIEnv *env, jclass cls, jint fd)
+{
+ int res;
+ int buf[1];
+ buf[0] = 1;
+ RESTARTABLE(write(fd, buf, 1), res);
+ if (res < 0) {
+ JNU_ThrowIOExceptionWithLastError(env, "write failed");
+ }
+}
+
+JNIEXPORT void JNICALL Java_sun_nio_ch_KqueuePort_drain1
+ (JNIEnv *env, jclass cls, jint fd)
+{
+ int res;
+ char buf[1];
+ RESTARTABLE(read(fd, buf, 1), res);
+ if (res < 0) {
+ JNU_ThrowIOExceptionWithLastError(env, "drain1 failed");
+ }
+}
+
+JNIEXPORT void JNICALL Java_sun_nio_ch_KqueuePort_close0
+ (JNIEnv *env, jclass cls, jint fd)
+{
+ int res;
+ RESTARTABLE(close(fd), res);
+}
+
+#ifdef __cplusplus
+}
+#endif
--- jdk/src/solaris/native/sun/nio/ch/Kqueue.c (revision 0)
+++ jdk/src/solaris/native/sun/nio/ch/Kqueue.c (revision 16)
@@ -0,0 +1,174 @@
+/*
+ * Scratched by davidxu@freebsd.org
+ */
+
+#include "jni.h"
+#include "jni_util.h"
+#include "jvm.h"
+#include "jlong.h"
+
+#include "sun_nio_ch_Kqueue.h"
+
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/event.h>
+#include <sys/time.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+static int
+restartable_kevent(int kqfd, struct kevent *changelist, int nchanges,
+ struct kevent *eventlist, int nevents);
+
+static int
+timeout_kevent(int kqfd, struct kevent *changelist, int nchanges,
+ struct kevent *eventlist, int nevents, int timo);
+
+JNIEXPORT jint JNICALL Java_sun_nio_ch_Kqueue_kqueue
+ (JNIEnv *env, jclass cls)
+{
+ int kqfd = kqueue();
+ if (kqfd < 0) {
+ JNU_ThrowIOExceptionWithLastError(env, "Error opening kqueue");
+ return -1;
+ }
+ return kqfd;
+}
+
+JNIEXPORT jint JNICALL Java_sun_nio_ch_Kqueue_keventChange
+ (JNIEnv *env, jclass cls, jint kqfd, jint fd, jshort flags, jshort filter)
+{
+ struct kevent ev;
+ struct timespec ts;
+
+ ev.ident = fd;
+ ev.flags = flags;
+ ev.filter = filter;
+ ev.fflags = 0;
+ ev.data = 0;
+ ev.udata = NULL;
+ ts.tv_sec = 0;
+ ts.tv_nsec = 0;
+ if (kevent(kqfd, &ev, 1, NULL, 0, &ts) < 0)
+ JNU_ThrowIOExceptionWithLastError(env, "Error changing kevent");
+ return (0);
+}
+
+JNIEXPORT jint JNICALL Java_sun_nio_ch_Kqueue_kevent
+ (JNIEnv *env, jclass cls, jint kqfd , jlong changelist_addr, jint nchanges,
+ jlong eventlist_addr, jint nevents, jlong timeout)
+{
+ struct kevent *changelist = (struct kevent *)jlong_to_ptr(changelist_addr);
+ struct kevent *eventlist = (struct kevent *)jlong_to_ptr(eventlist_addr);
+ int result;
+
+ if (timeout < 0) {
+ result = restartable_kevent(kqfd, changelist, nchanges,
+ eventlist, nevents);
+ } else {
+ result = timeout_kevent(kqfd, changelist, nchanges, eventlist,
+ nevents, timeout);
+ }
+
+ if (result < 0) {
+ JNU_ThrowIOExceptionWithLastError(env, "Error reading driver");
+ return -1;
+ }
+ return result;
+}
+
+static int
+restartable_kevent(int kqfd, struct kevent *changelist, int nchanges,
+ struct kevent *eventlist, int nevents)
+{
+ int result;
+
+ for (;;) {
+ result = kevent(kqfd, changelist, nchanges, eventlist,
+ nevents, NULL);
+ if (result == -1 && errno == EINTR) {
+ continue;
+ } else {
+ return result;
+ }
+ }
+}
+
+static int
+timeout_kevent(int kqfd, struct kevent *changelist, int nchanges,
+ struct kevent *eventlist, int nevents, int timo)
+{
+ struct timeval timeout, now, end;
+ int result;
+
+ timeout.tv_sec = timo / 1000;
+ timeout.tv_usec = (timo % 1000) * 1000;
+ gettimeofday(&now, NULL);
+ timeradd(&now, &timeout, &end);
+
+ for (;;) {
+ struct timespec ts;
+
+ ts.tv_sec = timeout.tv_sec;
+ ts.tv_nsec = timeout.tv_usec * 1000;
+ result = kevent(kqfd, changelist, nchanges, eventlist, nevents,
+ &ts);
+ if (result == -1 && (errno == EINTR)) {
+ gettimeofday(&now, NULL);
+ if (timercmp(&now, &end, >=))
+ return 0;
+ timersub(&end, &now, &timeout);
+ } else {
+ return result;
+ }
+ }
+}
+
+JNIEXPORT jint JNICALL Java_sun_nio_ch_Kqueue_keventSize
+ (JNIEnv *env, jclass cls)
+{
+ return sizeof(struct kevent);
+}
+
+JNIEXPORT void JNICALL Java_sun_nio_ch_Kqueue_putKevent
+ (JNIEnv *env, jclass cls, jlong address, jint index, jint fd, jshort flags, jshort filter)
+{
+ struct kevent *ev = (struct kevent *)jlong_to_ptr(address);
+
+ ev[index].ident = fd;
+ ev[index].flags = flags;
+ ev[index].filter = filter;
+ ev[index].fflags = 0;
+ ev[index].data = 0;
+ ev[index].udata = NULL;
+}
+
+JNIEXPORT jshort JNICALL Java_sun_nio_ch_Kqueue_getKeventFilter
+ (JNIEnv *env, jclass cls, jlong address, jint index)
+{
+ struct kevent *ev = (struct kevent *)jlong_to_ptr(address);
+
+ return ev[index].filter;
+}
+
+JNIEXPORT jshort JNICALL Java_sun_nio_ch_Kqueue_getKeventFlags
+ (JNIEnv *env, jclass cls, jlong address, jint index)
+{
+ struct kevent *ev = (struct kevent *)jlong_to_ptr(address);
+
+ return ev[index].flags;
+}
+
+JNIEXPORT jint JNICALL Java_sun_nio_ch_Kqueue_getKeventIdent
+ (JNIEnv *env, jclass cls, jlong address, jint index)
+{
+ struct kevent *ev = (struct kevent *)jlong_to_ptr(address);
+
+ return (int)ev[index].ident;
+}
+
+#ifdef __cplusplus
+}
+#endif
--- jdk/src/solaris/native/sun/nio/ch/KqueueArrayWrapper.c (revision 0)
+++ jdk/src/solaris/native/sun/nio/ch/KqueueArrayWrapper.c (revision 16)
@@ -0,0 +1,30 @@
+/*
+ * Scratched by davidxu@freebsd.org
+ */
+
+#include "jni.h"
+#include "jni_util.h"
+#include "jvm.h"
+#include "jlong.h"
+#include "nio_util.h"
+
+#include "sun_nio_ch_KqueueArrayWrapper.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+JNIEXPORT void JNICALL Java_sun_nio_ch_KqueueArrayWrapper_interrupt
+ (JNIEnv *env, jclass cls, jint fd)
+{
+ int fakebuf[1];
+ fakebuf[0] = 1;
+ if (write(fd, fakebuf, 1) < 0) {
+ JNU_ThrowIOExceptionWithLastError(env,
+ "Write to interrupt fd failed");
+ }
+}
+
+#ifdef __cplusplus
+}
+#endif
--- jdk/src/solaris/classes/sun/nio/ch/DefaultSelectorProvider.java (revision 1)
+++ jdk/src/solaris/classes/sun/nio/ch/DefaultSelectorProvider.java (revision 16)
@@ -47,6 +47,10 @@
public static SelectorProvider create() {
String osname = AccessController.doPrivileged(
new GetPropertyAction("os.name"));
+ if ("FreeBSD".equals(osname)) {
+ return new sun.nio.ch.KqueueSelectorProvider();
+ }
+
if ("SunOS".equals(osname)) {
return new sun.nio.ch.DevPollSelectorProvider();
}
--- jdk/src/solaris/classes/sun/nio/ch/KqueueSelectorImpl.java (revision 0)
+++ jdk/src/solaris/classes/sun/nio/ch/KqueueSelectorImpl.java (revision 16)
@@ -0,0 +1,203 @@
+/*
+ * scratched by davidxu@freebsd.org
+ */
+
+package sun.nio.ch;
+
+import java.io.IOException;
+import java.nio.channels.*;
+import java.nio.channels.spi.*;
+import java.util.*;
+import sun.misc.*;
+
+
+/**
+ * An implementation of Selector for FreeBSD.
+ */
+class KqueueSelectorImpl
+ extends SelectorImpl
+{
+
+ // File descriptors used for interrupt
+ protected int fd0;
+ protected int fd1;
+
+ // The kqueue object
+ KqueueArrayWrapper kqueueWrapper;
+
+ // The number of valid channels in this Selector's poll array
+ private int totalChannels;
+
+ // Maps from file descriptors to keys
+ private HashMap fdToKey;
+
+ // True if this Selector has been closed
+ private boolean closed = false;
+
+ // Lock for interrupt triggering and clearing
+ private Object interruptLock = new Object();
+ private boolean interruptTriggered = false;
+
+ private BitSet updatedSet;
+
+ /**
+ * Package private constructor called by factory method in
+ * the abstract superclass Selector.
+ */
+ KqueueSelectorImpl(SelectorProvider sp) {
+ super(sp);
+ long pipeFds = IOUtil.makePipe(false);
+ fd0 = (int) (pipeFds >>> 32);
+ fd1 = (int) pipeFds;
+ kqueueWrapper = new KqueueArrayWrapper();
+ totalChannels = 1;
+ kqueueWrapper.initInterrupt(fd0, fd1);
+ updatedSet = new BitSet();
+ fdToKey = new HashMap();
+ }
+
+ protected int doSelect(long timeout)
+ throws IOException
+ {
+ if (closed)
+ throw new ClosedSelectorException();
+ processDeregisterQueue();
+ try {
+ begin();
+ kqueueWrapper.poll(timeout);
+ } finally {
+ end();
+ }
+ processDeregisterQueue();
+ int numKeysUpdated = updateSelectedKeys();
+ if (kqueueWrapper.interrupted()) {
+ // Clear the wakeup pipe
+ synchronized (interruptLock) {
+ kqueueWrapper.clearInterrupted();
+ IOUtil.drain(fd0);
+ interruptTriggered = false;
+ }
+ }
+ return numKeysUpdated;
+ }
+
+ /**
+ * Update the keys whose fd's have been selected by the kqueue.
+ * Add the ready keys to the ready queue.
+ */
+ private int updateSelectedKeys() {
+ int entries = kqueueWrapper.updated;
+ int numKeysUpdated = 0;
+ SelectionKeyImpl ski;
+ int fd;
+ int i;
+
+ updatedSet.clear();
+ for (i = 0; i < entries; i++) {
+ fd = kqueueWrapper.getDescriptor(i);
+ ski = (SelectionKeyImpl) fdToKey.get(new Integer(fd));
+ // ski is null in the case of an interrupt
+ if (ski != null)
+ ski.nioReadyOps(0);
+ }
+
+ for (i = 0; i < entries; i++) {
+ fd = kqueueWrapper.getDescriptor(i);
+ ski = (SelectionKeyImpl) fdToKey.get(new Integer(fd));
+ // ski is null in the case of an interrupt
+ if (ski != null) {
+ int rOps = kqueueWrapper.getReventOps(i);
+ if (selectedKeys.contains(ski)) {
+ if (ski.channel.translateAndUpdateReadyOps(rOps, ski)) {
+ if (!updatedSet.get(fd)) {
+ updatedSet.set(fd);
+ numKeysUpdated++;
+ }
+ }
+ } else {
+ ski.channel.translateAndSetReadyOps(rOps, ski);
+ if ((ski.nioReadyOps() & ski.nioInterestOps()) != 0) {
+ selectedKeys.add(ski);
+ if (!updatedSet.get(fd)) {
+ updatedSet.set(fd);
+ numKeysUpdated++;
+ }
+ }
+ }
+ }
+ }
+ return numKeysUpdated;
+ }
+
+ protected void implClose() throws IOException {
+ if (!closed) {
+ closed = true;
+ FileDispatcherImpl.closeIntFD(fd0);
+ FileDispatcherImpl.closeIntFD(fd1);
+ if (kqueueWrapper != null) {
+ kqueueWrapper.release(fd0);
+ kqueueWrapper.closeKqueueFD();
+ kqueueWrapper = null;
+ selectedKeys = null;
+
+ // Deregister channels
+ Iterator<SelectionKey> i = keys.iterator();
+ while (i.hasNext()) {
+ SelectionKeyImpl ski = (SelectionKeyImpl)i.next();
+ deregister(ski);
+ SelectableChannel selch = ski.channel();
+ if (!selch.isOpen() && !selch.isRegistered())
+ ((SelChImpl)selch).kill();
+ i.remove();
+ }
+ totalChannels = 0;
+
+ }
+ fd0 = -1;
+ fd1 = -1;
+ }
+ }
+
+ protected void implRegister(SelectionKeyImpl ski) {
+ int fd = IOUtil.fdVal(ski.channel.getFD());
+ fdToKey.put(new Integer(fd), ski);
+ totalChannels++;
+ keys.add(ski);
+ }
+
+ protected void implDereg(SelectionKeyImpl ski) throws IOException {
+ int i = ski.getIndex();
+ assert (i >= 0);
+ int fd = ski.channel.getFDVal();
+ fdToKey.remove(new Integer(fd));
+ kqueueWrapper.release(fd);
+ totalChannels--;
+ ski.setIndex(-1);
+ keys.remove(ski);
+ selectedKeys.remove(ski);
+ deregister((AbstractSelectionKey)ski);
+ SelectableChannel selch = ski.channel();
+ if (!selch.isOpen() && !selch.isRegistered())
+ ((SelChImpl)selch).kill();
+ }
+
+ void putEventOps(SelectionKeyImpl sk, int ops) {
+ int fd = IOUtil.fdVal(sk.channel.getFD());
+ kqueueWrapper.setInterest(fd, ops);
+ }
+
+ public Selector wakeup() {
+ synchronized (interruptLock) {
+ if (!interruptTriggered) {
+ kqueueWrapper.interrupt();
+ interruptTriggered = true;
+ }
+ }
+ return this;
+ }
+
+ static {
+ Util.load();
+ }
+
+}
--- jdk/src/solaris/classes/sun/nio/ch/Kqueue.java (revision 0)
+++ jdk/src/solaris/classes/sun/nio/ch/Kqueue.java (revision 16)
@@ -0,0 +1,49 @@
+/*
+ * Scratched by davidxu@freebsd.org
+ */
+
+package sun.nio.ch;
+
+import java.io.IOException;
+import sun.misc.Unsafe;
+
+class Kqueue {
+ // Kevent filters
+ static final short EVFILT_READ = -1;
+ static final short EVFILT_WRITE = -2;
+
+ // Kevent flags
+ static final short EV_ADD = 0x0001;
+ static final short EV_DELETE = 0x0002;
+ static final short EV_ONESHOT = 0x0010;
+ static final short EV_ERROR = 0x4000;
+
+ private static final Unsafe unsafe = Unsafe.getUnsafe();
+ static final int SIZEOF_KEVENT = keventSize();
+
+ private Kqueue() {}
+
+ /**
+ * Allocates a poll array to handle up to {@code count} events.
+ */
+ static long allocatePollArray(int count) {
+ return unsafe.allocateMemory(count * SIZEOF_KEVENT);
+ }
+
+ /**
+ * Free a poll array
+ */
+ static void freePollArray(long address) {
+ unsafe.freeMemory(address);
+ }
+
+ static native int kqueue();
+ static native int keventChange(int kqfd, int fd, short flags, short filter);
+ static native int kevent(int kqfd, long changeList, int nchanges, long eventList,
+ int nevents, long timeout);
+ static native int keventSize();
+ static native void putKevent(long address, int index, int fd, short flag, short filter);
+ static native short getKeventFilter(long address, int index);
+ static native short getKeventFlags(long address, int index);
+ static native int getKeventIdent(long address, int index);
+}
--- jdk/src/solaris/classes/sun/nio/ch/KqueueArrayWrapper.java (revision 0)
+++ jdk/src/solaris/classes/sun/nio/ch/KqueueArrayWrapper.java (revision 16)
@@ -0,0 +1,211 @@
+/*
+ * Scratched by davidxu@freebsd.org
+ */
+
+package sun.nio.ch;
+
+import sun.misc.*;
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.Set;
+import java.util.Arrays;
+import static sun.nio.ch.Kqueue.*;
+
+class KqueueArrayWrapper {
+
+ // Event masks copied from class AbstractPollArrayWrapper
+ static final short POLLIN = 0x0001;
+ static final short POLLOUT = 0x0004;
+ static final short POLLERR = 0x0008;
+ static final short POLLHUP = 0x0010;
+ static final short POLLNVAL = 0x0020;
+ static final short POLLREMOVE = 0x0800;
+
+ // Zero mask to unregister events from kqueue
+ static final Integer ZERO_MASK = new Integer(0);
+
+ // Capacity increment of some arrays
+ static final int capacityIncr = 100;
+
+ KqueueArrayWrapper() {
+ int allocationSize;
+
+ // initial size of event array
+ pollKeventSize = capacityIncr * 2;
+ allocationSize = pollKeventSize * SIZEOF_KEVENT;
+ pollKeventArray = new AllocatedNativeObject(allocationSize, true);
+ kqfd = kqueue();
+ }
+
+ // Machinery for remembering fd registration changes
+ private HashMap<Integer, Integer> updateMap = new HashMap<Integer, Integer>();
+ private int[] oldMasks = new int[capacityIncr];
+
+ // kevent array to receive
+ private AllocatedNativeObject pollKeventArray;
+
+ // current size of pollKeventArray
+ int pollKeventSize;
+
+ // the pollKeventSize should be larger than this
+ int nextKeventSize;
+
+ // The fd of the kqueue()
+ int kqfd;
+
+ // The fd of the interrupt line going out
+ int outgoingInterruptFD;
+
+ // The fd of the interrupt line coming in
+ int incomingInterruptFD;
+
+ // The index of the interrupt FD
+ int interruptedIndex;
+
+ // Number of updated kevent entries
+ int updated;
+
+ // ensure some array sizes are large enough with a given file handle
+ void ensureFd(int fd) {
+ ensureNextEventFd(fd);
+ if (oldMasks.length < fd+1)
+ oldMasks = Arrays.copyOf(oldMasks, fd+capacityIncr);
+ }
+
+ void ensureNextEventFd(int fd) {
+ // each file handle may have two filters, read and write.
+ if (nextKeventSize / 2 < fd+1)
+ nextKeventSize = (fd+1) * 2;
+ }
+
+ void resizeEventBuffer() {
+ if (nextKeventSize > pollKeventSize) {
+ pollKeventArray.free();
+ pollKeventSize = nextKeventSize + capacityIncr * 2;
+ int allocationSize = pollKeventSize * SIZEOF_KEVENT;
+ pollKeventArray = new AllocatedNativeObject(allocationSize, true);
+ }
+ }
+
+ void initInterrupt(int fd0, int fd1) {
+ outgoingInterruptFD = fd1;
+ incomingInterruptFD = fd0;
+ ensureFd(fd0);
+ keventChange(kqfd, fd0, EV_ADD, EVFILT_READ);
+ }
+
+ int getReventOps(int i) {
+ short filter = getKeventFilter(pollKeventArray.address(), i);
+ short flags = getKeventFlags(pollKeventArray.address(), i);
+ if ((flags & EV_ERROR) != 0)
+ return POLLERR;
+ if (filter == EVFILT_READ)
+ return POLLIN;
+ if (filter == EVFILT_WRITE)
+ return POLLOUT;
+ return (0);
+ }
+
+ int getDescriptor(int i) {
+ return getKeventIdent(pollKeventArray.address(), i);
+ }
+
+ void setInterest(int fd, int mask) {
+ if (fd <0)
+ throw new IllegalArgumentException("file handle less than 0");
+ synchronized (updateMap) {
+ ensureFd(fd);
+ updateMap.put(new Integer(fd), new Integer(mask));
+ }
+ }
+
+ void release(int fd) {
+ synchronized (updateMap) {
+ updateMap.put(new Integer(fd), ZERO_MASK);
+ }
+ }
+
+ void closeKqueueFD() throws IOException {
+ FileDispatcherImpl.closeIntFD(kqfd);
+ pollKeventArray.free();
+ }
+
+ int poll(long timeout) {
+ int changeCount = updateRegistrations();
+ updated = kevent(kqfd, pollKeventArray.address(), changeCount,
+ pollKeventArray.address(), pollKeventSize, timeout);
+ for (int i = 0; i < updated; i++) {
+ if (getDescriptor(i) == incomingInterruptFD) {
+ interruptedIndex = i;
+ interrupted = true;
+ break;
+ }
+ }
+ return updated;
+ }
+
+ int updateRegistrations() {
+ int index = 0;
+ synchronized (updateMap) {
+ resizeEventBuffer();
+
+ Set<Integer> s = updateMap.keySet();
+ /*
+ * Because resizeEventBuffer may reallocate event buffer,
+ * we must retrieve fresh address here.
+ */
+ long address = pollKeventArray.address();
+
+ for (Integer fd : s) {
+ Integer newmask = updateMap.get(fd);
+ int oldmask = oldMasks[fd];
+ if ((oldmask & POLLIN) != 0) {
+ if ((newmask & POLLIN) == 0) {
+ putKevent(address, index, fd.intValue(), EV_DELETE, EVFILT_READ);
+ index++;
+ }
+ } else {
+ if ((newmask & POLLIN) != 0) {
+ putKevent(address, index, fd.intValue(), EV_ADD, EVFILT_READ);
+ index++;
+ }
+ }
+
+ if ((oldmask & POLLOUT) != 0) {
+ if ((newmask & POLLOUT) == 0) {
+ putKevent(address, index, fd.intValue(), EV_DELETE, EVFILT_WRITE);
+ index++;
+ }
+ } else {
+ if ((newmask & POLLOUT) != 0) {
+ putKevent(address, index, fd.intValue(), EV_ADD, EVFILT_WRITE);
+ index++;
+ }
+ }
+ oldMasks[fd] = newmask;
+ }
+ updateMap.clear();
+ }
+ return index;
+ }
+
+ boolean interrupted = false;
+
+ public void interrupt() {
+ interrupt(outgoingInterruptFD);
+ }
+
+ public int interruptedIndex() {
+ return interruptedIndex;
+ }
+
+ boolean interrupted() {
+ return interrupted;
+ }
+
+ void clearInterrupted() {
+ interrupted = false;
+ }
+
+ private static native void interrupt(int fd);
+}
--- jdk/src/solaris/classes/sun/nio/ch/DefaultAsynchronousChannelProvider.java (revision 1)
+++ jdk/src/solaris/classes/sun/nio/ch/DefaultAsynchronousChannelProvider.java (revision 16)
@@ -46,6 +46,8 @@
public static AsynchronousChannelProvider create() {
String osname = AccessController
.doPrivileged(new GetPropertyAction("os.name"));
+ if (osname.equals("FreeBSD"))
+ return new FreeBSDAsynchronousChannelProvider();
if (osname.equals("SunOS"))
return new SolarisAsynchronousChannelProvider();
if (osname.equals("Linux"))
--- jdk/src/solaris/classes/sun/nio/ch/KqueuePort.java (revision 0)
+++ jdk/src/solaris/classes/sun/nio/ch/KqueuePort.java (revision 16)
@@ -0,0 +1,321 @@
+/*
+ * Scratched by davidxu@FreeBSD.org
+ */
+
+package sun.nio.ch;
+
+import java.nio.channels.spi.AsynchronousChannelProvider;
+import java.io.IOException;
+import java.util.concurrent.ArrayBlockingQueue;
+import java.util.concurrent.RejectedExecutionException;
+import java.util.concurrent.atomic.AtomicInteger;
+import static sun.nio.ch.Kqueue.*;
+
+/**
+ * AsynchronousChannelGroup implementation based on the FreeBSD kqueue facility.
+ */
+
+final class KqueuePort
+ extends Port
+{
+/*
+ // Kevent filters
+ static final short EVFILT_READ = -1;
+ static final short EVFILT_WRITE = -2;
+
+ // Kevent flags
+ static final char EV_ADD = 0x0001;
+ static final char EV_DELETE = 0x0002;
+ static final char EV_EOF = 0x8000;
+ static final char EV_ERROR = 0x4000;
+*/
+
+ // maximum number of events to poll at a time
+ private static final int MAX_KEVENTS = 512;
+
+ // kqueue file descriptor
+ private final int kqfd;
+
+ // true if kqueue closed
+ private boolean closed;
+
+ // socket pair used for wakeup
+ private final int sp[];
+
+ // number of wakeups pending
+ private final AtomicInteger wakeupCount = new AtomicInteger();
+
+ // address of the poll array passed to kevent()
+ private final long address;
+
+ // encapsulates an event for a channel
+ static class Event {
+ final PollableChannel channel;
+ final int events;
+
+ Event(PollableChannel channel, int events) {
+ this.channel = channel;
+ this.events = events;
+ }
+
+ PollableChannel channel() { return channel; }
+ int events() { return events; }
+ }
+
+ // queue of events for cases that a polling thread dequeues more than one
+ // event
+ private final ArrayBlockingQueue<Event> queue;
+ private final Event NEED_TO_POLL = new Event(null, 0);
+ private final Event EXECUTE_TASK_OR_SHUTDOWN = new Event(null, 0);
+
+ KqueuePort(AsynchronousChannelProvider provider, ThreadPool pool)
+ throws IOException
+ {
+ super(provider, pool);
+
+ // open kqueue
+ this.kqfd = kqueue();
+
+ // create socket pair for wakeup mechanism
+ int[] sv = new int[2];
+ try {
+ socketpair(sv);
+ // register one end with epoll
+ keventChange(kqfd, sv[0], EV_ADD, EVFILT_READ);
+ } catch (IOException x) {
+ close0(kqfd);
+ throw x;
+ }
+ this.sp = sv;
+
+ // allocate the poll array
+ this.address = allocatePollArray(MAX_KEVENTS);
+
+ // create the queue and offer the special event to ensure that the first
+ // threads polls
+ this.queue = new ArrayBlockingQueue<Event>(MAX_KEVENTS);
+ this.queue.offer(NEED_TO_POLL);
+ }
+
+ KqueuePort start() {
+ startThreads(new EventHandlerTask());
+ return this;
+ }
+
+ /**
+ * Release all resources
+ */
+ private void implClose() {
+ synchronized (this) {
+ if (closed)
+ return;
+ closed = true;
+ }
+ freePollArray(address);
+ close0(sp[0]);
+ close0(sp[1]);
+ close0(kqfd);
+ }
+
+ private void wakeup() {
+ if (wakeupCount.incrementAndGet() == 1) {
+ // write byte to socketpair to force wakeup
+ try {
+ interrupt(sp[1]);
+ } catch (IOException x) {
+ throw new AssertionError(x);
+ }
+ }
+ }
+
+ @Override
+ void executeOnHandlerTask(Runnable task) {
+ synchronized (this) {
+ if (closed)
+ throw new RejectedExecutionException();
+ offerTask(task);
+ wakeup();
+ }
+ }
+
+ @Override
+ void shutdownHandlerTasks() {
+ /*
+ * If no tasks are running then just release resources; otherwise
+ * write to the one end of the socketpair to wakeup any polling threads.
+ */
+ int nThreads = threadCount();
+ if (nThreads == 0) {
+ implClose();
+ } else {
+ // send interrupt to each thread
+ while (nThreads-- > 0) {
+ wakeup();
+ }
+ }
+ }
+
+ // invoke by clients to register a file descriptor
+ @Override
+ void startPoll(int fd, int events) {
+
+ if ((events & POLLIN) != 0)
+ keventChange(kqfd, fd, (short)(EV_ONESHOT|EV_ADD), EVFILT_READ);
+ if ((events & POLLOUT) != 0)
+ keventChange(kqfd, fd, (short)(EV_ONESHOT|EV_ADD), EVFILT_WRITE);
+ }
+
+ /*
+ * Task to process events from kevent and dispatch to the channel's
+ * onEvent handler.
+ *
+ * Events are retreived from kevent in batch and offered to a BlockingQueue
+ * where they are consumed by handler threads. A special "NEED_TO_POLL"
+ * event is used to signal one consumer to re-poll when all events have
+ * been consumed.
+ */
+ private class EventHandlerTask implements Runnable {
+ private Event poll() throws IOException {
+ try {
+ for (;;) {
+ int n = kevent(kqfd, 0, 0, address, MAX_KEVENTS, -1);
+ /*
+ * 'n' events have been read. Here we map them to their
+ * corresponding channel in batch and queue n-1 so that
+ * they can be handled by other handler threads. The last
+ * event is handled by this thread (and so is not queued).
+ */
+ fdToChannelLock.readLock().lock();
+ try {
+ while (n-- > 0) {
+ int fd = getKeventIdent(address, n);
+
+ // wakeup
+ if (fd == sp[0]) {
+ if (wakeupCount.decrementAndGet() == 0) {
+ // no more wakeups so drain pipe
+ drain1(sp[0]);
+ }
+
+ // queue special event if there are more events
+ // to handle.
+ if (n > 0) {
+ queue.offer(EXECUTE_TASK_OR_SHUTDOWN);
+ continue;
+ }
+ return EXECUTE_TASK_OR_SHUTDOWN;
+ }
+
+ PollableChannel channel = fdToChannel.get(fd);
+ if (channel != null) {
+ int events = getEvents(address, n);
+ Event ev = new Event(channel, events);
+
+ // n-1 events are queued; This thread handles
+ // the last one except for the wakeup
+ if (n > 0) {
+ queue.offer(ev);
+ } else {
+ return ev;
+ }
+ }
+ }
+ } finally {
+ fdToChannelLock.readLock().unlock();
+ }
+ }
+ } finally {
+ // to ensure that some thread will poll when all events have
+ // been consumed
+ queue.offer(NEED_TO_POLL);
+ }
+ }
+
+ public void run() {
+ Invoker.GroupAndInvokeCount myGroupAndInvokeCount =
+ Invoker.getGroupAndInvokeCount();
+ final boolean isPooledThread = (myGroupAndInvokeCount != null);
+ boolean replaceMe = false;
+ Event ev;
+ try {
+ for (;;) {
+ // reset invoke count
+ if (isPooledThread)
+ myGroupAndInvokeCount.resetInvokeCount();
+
+ try {
+ replaceMe = false;
+ ev = queue.take();
+
+ // no events and this thread has been "selected" to
+ // poll for more.
+ if (ev == NEED_TO_POLL) {
+ try {
+ ev = poll();
+ } catch (IOException x) {
+ x.printStackTrace();
+ return;
+ }
+ }
+ } catch (InterruptedException x) {
+ continue;
+ }
+
+ // handle wakeup to execute task or shutdown
+ if (ev == EXECUTE_TASK_OR_SHUTDOWN) {
+ Runnable task = pollTask();
+ if (task == null) {
+ // shutdown request
+ return;
+ }
+ // run task (may throw error/exception)
+ replaceMe = true;
+ task.run();
+ continue;
+ }
+
+ // process event
+ try {
+ ev.channel().onEvent(ev.events(), isPooledThread);
+ } catch (Error x) {
+ replaceMe = true; throw x;
+ } catch (RuntimeException x) {
+ replaceMe = true; throw x;
+ }
+ }
+ } finally {
+ // last handler to exit when shutdown releases resources
+ int remaining = threadExit(this, replaceMe);
+ if (remaining == 0 && isShutdown()) {
+ implClose();
+ }
+ }
+ }
+ }
+
+ static int getEvents(long address, int index) {
+ short filter = getKeventFilter(address, index);
+ short flags = getKeventFlags(address, index);
+ if ((flags & EV_ERROR) != 0)
+ return POLLERR;
+ if (filter == EVFILT_READ)
+ return POLLIN;
+ if (filter == EVFILT_WRITE)
+ return POLLOUT;
+ return (0);
+ }
+
+ // -- Native methods --
+
+ private static native void socketpair(int[] sv) throws IOException;
+
+ private static native void interrupt(int fd) throws IOException;
+
+ private static native void drain1(int fd) throws IOException;
+
+ private static native void close0(int fd);
+
+ static {
+ Util.load();
+ }
+}
--- jdk/src/solaris/classes/sun/nio/ch/FreeBSDAsynchronousChannelProvider.java (revision 0)
+++ jdk/src/solaris/classes/sun/nio/ch/FreeBSDAsynchronousChannelProvider.java (revision 16)
@@ -0,0 +1,67 @@
+
+package sun.nio.ch;
+
+import java.nio.channels.*;
+import java.nio.channels.spi.AsynchronousChannelProvider;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.ThreadFactory;
+import java.net.ProtocolFamily;
+import java.io.IOException;
+
+public class FreeBSDAsynchronousChannelProvider
+ extends AsynchronousChannelProvider
+{
+ private static volatile KqueuePort defaultPort;
+
+ private KqueuePort defaultEventPort() throws IOException {
+ if (defaultPort == null) {
+ synchronized (FreeBSDAsynchronousChannelProvider.class) {
+ if (defaultPort == null) {
+ defaultPort = new KqueuePort(this, ThreadPool.getDefault()).start();
+ }
+ }
+ }
+ return defaultPort;
+ }
+
+ public FreeBSDAsynchronousChannelProvider() {
+ }
+
+ @Override
+ public AsynchronousChannelGroup openAsynchronousChannelGroup(int nThreads, ThreadFactory factory)
+ throws IOException
+ {
+ return new KqueuePort(this, ThreadPool.create(nThreads, factory)).start();
+ }
+
+ @Override
+ public AsynchronousChannelGroup openAsynchronousChannelGroup(ExecutorService executor, int initialSize)
+ throws IOException
+ {
+ return new KqueuePort(this, ThreadPool.wrap(executor, initialSize)).start();
+ }
+
+ private Port toPort(AsynchronousChannelGroup group) throws IOException {
+ if (group == null) {
+ return defaultEventPort();
+ } else {
+ if (!(group instanceof KqueuePort))
+ throw new IllegalChannelGroupException();
+ return (Port)group;
+ }
+ }
+
+ @Override
+ public AsynchronousServerSocketChannel openAsynchronousServerSocketChannel(AsynchronousChannelGroup group)
+ throws IOException
+ {
+ return new UnixAsynchronousServerSocketChannelImpl(toPort(group));
+ }
+
+ @Override
+ public AsynchronousSocketChannel openAsynchronousSocketChannel(AsynchronousChannelGroup group)
+ throws IOException
+ {
+ return new UnixAsynchronousSocketChannelImpl(toPort(group));
+ }
+}
$FreeBSD$
--- jdk/make/java/nio/Makefile (revision 1)
+++ jdk/make/java/nio/Makefile (revision 16)
@@ -264,7 +264,12 @@
ifeq ($(PLATFORM), bsd)
FILES_java += \
sun/nio/ch/AbstractPollSelectorImpl.java \
+ sun/nio/ch/FreeBSDAsynchronousChannelProvider.java \
sun/nio/ch/InheritedChannel.java \
+ sun/nio/ch/Kqueue.java \
+ sun/nio/ch/KqueueArrayWrapper.java \
+ sun/nio/ch/KqueueSelectorProvider.java \
+ sun/nio/ch/KqueueSelectorImpl.java \
sun/nio/ch/PollSelectorProvider.java \
sun/nio/ch/PollSelectorImpl.java \
sun/nio/ch/Port.java \
@@ -299,6 +304,9 @@
FILES_c += \
InheritedChannel.c \
+ Kqueue.c \
+ KqueueArrayWrapper.c \
+ KqueuePort.c \
NativeThread.c \
PollArrayWrapper.c \
UnixAsynchronousServerSocketChannelImpl.c \
@@ -311,6 +319,9 @@
FILES_export += \
sun/nio/ch/InheritedChannel.java \
+ sun/nio/ch/Kqueue.java \
+ sun/nio/ch/KqueueArrayWrapper.java \
+ sun/nio/ch/KqueuePort.java \
sun/nio/ch/NativeThread.java \
sun/nio/ch/UnixAsynchronousServerSocketChannelImpl.java \
sun/nio/ch/UnixAsynchronousSocketChannelImpl.java \
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