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jnr-enxio/0001-Add-enxio-classes-from-jnr-unixsocket.patch
jeff200902 ebb359d8cf Package init
2020-08-10 16:42:24 +08:00

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From c9e2b0f565074474613c8fbee6dde86a9fcd2395 Mon Sep 17 00:00:00 2001
From: Mat Booth <mat.booth@redhat.com>
Date: Sat, 8 Dec 2018 10:39:47 +0000
Subject: [PATCH] Add enxio classes from jnr-unixsocket
These classes are removed from jnr-unixsocket and packaged here instead
to avoid split-package problems in OSGi systems.
---
.../AbstractNativeDatagramChannel.java | 79 ++++++++++
.../channels/AbstractNativeSocketChannel.java | 101 +++++++++++++
src/main/java/jnr/enxio/channels/Common.java | 136 ++++++++++++++++++
.../enxio/channels/NativeSocketChannel.java | 46 ++----
4 files changed, 325 insertions(+), 37 deletions(-)
create mode 100644 src/main/java/jnr/enxio/channels/AbstractNativeDatagramChannel.java
create mode 100644 src/main/java/jnr/enxio/channels/AbstractNativeSocketChannel.java
create mode 100644 src/main/java/jnr/enxio/channels/Common.java
diff --git a/src/main/java/jnr/enxio/channels/AbstractNativeDatagramChannel.java b/src/main/java/jnr/enxio/channels/AbstractNativeDatagramChannel.java
new file mode 100644
index 0000000..a48d6bc
--- /dev/null
+++ b/src/main/java/jnr/enxio/channels/AbstractNativeDatagramChannel.java
@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2016 Fritz Elfert
+ *
+ * This file is part of the JNR project.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package jnr.enxio.channels;
+
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.nio.channels.ByteChannel;
+import java.nio.channels.DatagramChannel;
+import java.nio.channels.spi.SelectorProvider;
+
+public abstract class AbstractNativeDatagramChannel extends DatagramChannel
+ implements ByteChannel, NativeSelectableChannel {
+
+ private final Common common;
+
+ public AbstractNativeDatagramChannel(int fd) {
+ this(NativeSelectorProvider.getInstance(), fd);
+ }
+
+ AbstractNativeDatagramChannel(SelectorProvider provider, int fd) {
+ super(provider);
+ common = new Common(fd);
+ }
+
+ public void setFD(int fd) {
+ common.setFD(fd);
+ }
+
+ public final int getFD() {
+ return common.getFD();
+ }
+
+ @Override
+ protected void implCloseSelectableChannel() throws IOException {
+ Native.close(common.getFD());
+ }
+
+ @Override
+ protected void implConfigureBlocking(boolean block) throws IOException {
+ Native.setBlocking(common.getFD(), block);
+ }
+
+ public int read(ByteBuffer dst) throws IOException {
+ return common.read(dst);
+ }
+
+ @Override
+ public long read(ByteBuffer[] dsts, int offset,
+ int length) throws IOException {
+ return common.read(dsts, offset, length);
+ }
+
+ public int write(ByteBuffer src) throws IOException {
+ return common.write(src);
+ }
+
+ @Override
+ public long write(ByteBuffer[] srcs, int offset,
+ int length) throws IOException {
+ return common.write(srcs, offset, length);
+ }
+
+}
diff --git a/src/main/java/jnr/enxio/channels/AbstractNativeSocketChannel.java b/src/main/java/jnr/enxio/channels/AbstractNativeSocketChannel.java
new file mode 100644
index 0000000..65ead06
--- /dev/null
+++ b/src/main/java/jnr/enxio/channels/AbstractNativeSocketChannel.java
@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2016 Marcus Linke
+ *
+ * This file is part of the JNR project.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package jnr.enxio.channels;
+
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.nio.channels.ByteChannel;
+import java.nio.channels.SocketChannel;
+import java.nio.channels.spi.SelectorProvider;
+
+import jnr.constants.platform.Shutdown;
+
+public abstract class AbstractNativeSocketChannel extends SocketChannel
+ implements ByteChannel, NativeSelectableChannel {
+
+ private final Common common;
+
+ public AbstractNativeSocketChannel(int fd) {
+ this(NativeSelectorProvider.getInstance(), fd);
+ }
+
+ AbstractNativeSocketChannel(SelectorProvider provider, int fd) {
+ super(provider);
+ common = new Common(fd);
+ }
+
+ public void setFD(int fd) {
+ common.setFD(fd);
+ }
+
+ public final int getFD() {
+ return common.getFD();
+ }
+
+ @Override
+ protected void implCloseSelectableChannel() throws IOException {
+ Native.close(common.getFD());
+ }
+
+ @Override
+ protected void implConfigureBlocking(boolean block) throws IOException {
+ Native.setBlocking(common.getFD(), block);
+ }
+
+ public int read(ByteBuffer dst) throws IOException {
+ return common.read(dst);
+ }
+
+ @Override
+ public long read(ByteBuffer[] dsts, int offset,
+ int length) throws IOException {
+ return common.read(dsts, offset, length);
+ }
+
+ public int write(ByteBuffer src) throws IOException {
+ return common.write(src);
+ }
+
+ @Override
+ public long write(ByteBuffer[] srcs, int offset,
+ int length) throws IOException {
+ return common.write(srcs, offset, length);
+ }
+
+ @Override
+ public SocketChannel shutdownInput() throws IOException {
+ int n = Native.shutdown(common.getFD(), SHUT_RD);
+ if (n < 0) {
+ throw new IOException(Native.getLastErrorString());
+ }
+ return this;
+ }
+
+ @Override
+ public SocketChannel shutdownOutput() throws IOException {
+ int n = Native.shutdown(common.getFD(), SHUT_WR);
+ if (n < 0) {
+ throw new IOException(Native.getLastErrorString());
+ }
+ return this;
+ }
+
+ private static final int SHUT_RD = Shutdown.SHUT_RD.intValue();
+ private static final int SHUT_WR = Shutdown.SHUT_WR.intValue();
+}
diff --git a/src/main/java/jnr/enxio/channels/Common.java b/src/main/java/jnr/enxio/channels/Common.java
new file mode 100644
index 0000000..66ac609
--- /dev/null
+++ b/src/main/java/jnr/enxio/channels/Common.java
@@ -0,0 +1,136 @@
+/*
+ * Copyright (C) 2016 Fritz Elfert
+ *
+ * This file is part of the JNR project.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package jnr.enxio.channels;
+
+import java.io.IOException;
+import java.nio.ByteBuffer;
+
+import jnr.constants.platform.Errno;
+
+/**
+ * Helper class, providing common methods.
+ */
+final class Common {
+
+ private int _fd = -1;
+
+ Common(int fd) {
+ _fd = fd;
+ }
+
+ void setFD(int fd) {
+ _fd = fd;
+ }
+
+ int getFD() {
+ return _fd;
+ }
+
+ int read(ByteBuffer dst) throws IOException {
+
+ ByteBuffer buffer = ByteBuffer.allocate(dst.remaining());
+
+ int n = Native.read(_fd, buffer);
+
+ buffer.flip();
+
+ dst.put(buffer);
+
+ switch (n) {
+ case 0:
+ return -1;
+
+ case -1:
+ Errno lastError = Native.getLastError();
+ switch (lastError) {
+ case EAGAIN:
+ case EWOULDBLOCK:
+ return 0;
+
+ default:
+ throw new IOException(Native.getLastErrorString());
+ }
+
+ default: {
+
+ return n;
+ }
+ }
+ }
+
+ long read(ByteBuffer[] dsts, int offset, int length)
+ throws IOException {
+ long total = 0;
+
+ for (int i = 0; i < length; i++) {
+ ByteBuffer dst = dsts[offset + i];
+ long read = read(dst);
+ if (read == -1) {
+ return read;
+ }
+ total += read;
+ }
+
+ return total;
+ }
+
+ int write(ByteBuffer src) throws IOException {
+
+ int r = src.remaining();
+
+ ByteBuffer buffer = ByteBuffer.allocate(r);
+
+ buffer.put(src);
+
+ buffer.position(0);
+
+ int n = Native.write(_fd, buffer);
+
+ if (n >=0 ) {
+ if (n < r) {
+ src.position(src.position()-(r-n));
+ }
+ } else {
+ switch (Native.getLastError()) {
+ case EAGAIN:
+ case EWOULDBLOCK:
+ src.position(src.position()-r);
+ return 0;
+ default:
+ throw new IOException(Native.getLastErrorString());
+ }
+ }
+
+ return n;
+ }
+
+ long write(ByteBuffer[] srcs, int offset, int length)
+ throws IOException {
+
+ long result = 0;
+ int index = 0;
+
+ for (index = offset; index < length; index++) {
+ result += write(srcs[index]);
+ }
+
+ return result;
+ }
+
+}
diff --git a/src/main/java/jnr/enxio/channels/NativeSocketChannel.java b/src/main/java/jnr/enxio/channels/NativeSocketChannel.java
index 445ba1a..082ead1 100644
--- a/src/main/java/jnr/enxio/channels/NativeSocketChannel.java
+++ b/src/main/java/jnr/enxio/channels/NativeSocketChannel.java
@@ -29,7 +29,7 @@ import java.nio.channels.spi.SelectorProvider;
public class NativeSocketChannel extends AbstractSelectableChannel
implements ByteChannel, NativeSelectableChannel {
- private final int fd;
+ private final Common common;
private final int validOps;
public NativeSocketChannel(int fd) {
@@ -42,18 +42,18 @@ public class NativeSocketChannel extends AbstractSelectableChannel
NativeSocketChannel(SelectorProvider provider, int fd, int ops) {
super(provider);
- this.fd = fd;
+ common = new Common(fd);
this.validOps = ops;
}
@Override
protected void implCloseSelectableChannel() throws IOException {
- Native.close(fd);
+ Native.close(common.getFD());
}
@Override
protected void implConfigureBlocking(boolean block) throws IOException {
- Native.setBlocking(fd, block);
+ Native.setBlocking(common.getFD(), block);
}
@Override
@@ -61,54 +61,26 @@ public class NativeSocketChannel extends AbstractSelectableChannel
return validOps;
}
public final int getFD() {
- return fd;
+ return common.getFD();
}
public int read(ByteBuffer dst) throws IOException {
- int n = Native.read(fd, dst);
- switch (n) {
- case 0:
- return -1;
-
- case -1:
- switch (Native.getLastError()) {
- case EAGAIN:
- case EWOULDBLOCK:
- return 0;
-
- default:
- throw new IOException(Native.getLastErrorString());
- }
-
- default:
- return n;
- }
+ return common.read(dst);
}
public int write(ByteBuffer src) throws IOException {
- int n = Native.write(fd, src);
- if (n < 0) {
- switch (Native.getLastError()) {
- case EAGAIN:
- case EWOULDBLOCK:
- return 0;
- default:
- throw new IOException(Native.getLastErrorString());
- }
- }
-
- return n;
+ return common.write(src);
}
public void shutdownInput() throws IOException {
- int n = Native.shutdown(fd, SHUT_RD);
+ int n = Native.shutdown(common.getFD(), SHUT_RD);
if (n < 0) {
throw new IOException(Native.getLastErrorString());
}
}
public void shutdownOutput() throws IOException {
- int n = Native.shutdown(fd, SHUT_WR);
+ int n = Native.shutdown(common.getFD(), SHUT_WR);
if (n < 0) {
throw new IOException(Native.getLastErrorString());
}
--
2.19.1
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