ed61e5f543
Motivation: OOME is occurred by increasing suppressedExceptions because other libraries call Throwable#addSuppressed. As we have no control over what other libraries do we need to ensure this can not lead to OOME. Modifications: Only use static instances of the Exceptions if we can either dissable addSuppressed or we run on java6. Result: Not possible to OOME because of addSuppressed. Fixes https://github.com/netty/netty/issues/9151.
107 lines
3.8 KiB
Java
107 lines
3.8 KiB
Java
/*
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* Copyright 2016 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.channel.kqueue;
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import io.netty.channel.DefaultFileRegion;
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import io.netty.channel.unix.PeerCredentials;
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import io.netty.channel.unix.Socket;
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import java.io.IOException;
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import static io.netty.channel.kqueue.AcceptFilter.PLATFORM_UNSUPPORTED;
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import static io.netty.channel.unix.Errors.ioResult;
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/**
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* A socket which provides access BSD native methods.
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*/
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final class BsdSocket extends Socket {
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// These limits are just based on observations. I couldn't find anything in header files which formally
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// define these limits.
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private static final int APPLE_SND_LOW_AT_MAX = 1 << 17;
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private static final int FREEBSD_SND_LOW_AT_MAX = 1 << 15;
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static final int BSD_SND_LOW_AT_MAX = Math.min(APPLE_SND_LOW_AT_MAX, FREEBSD_SND_LOW_AT_MAX);
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BsdSocket(int fd) {
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super(fd);
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}
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void setAcceptFilter(AcceptFilter acceptFilter) throws IOException {
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setAcceptFilter(intValue(), acceptFilter.filterName(), acceptFilter.filterArgs());
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}
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void setTcpNoPush(boolean tcpNoPush) throws IOException {
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setTcpNoPush(intValue(), tcpNoPush ? 1 : 0);
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}
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void setSndLowAt(int lowAt) throws IOException {
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setSndLowAt(intValue(), lowAt);
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}
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boolean isTcpNoPush() throws IOException {
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return getTcpNoPush(intValue()) != 0;
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}
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int getSndLowAt() throws IOException {
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return getSndLowAt(intValue());
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}
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AcceptFilter getAcceptFilter() throws IOException {
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String[] result = getAcceptFilter(intValue());
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return result == null ? PLATFORM_UNSUPPORTED : new AcceptFilter(result[0], result[1]);
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}
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PeerCredentials getPeerCredentials() throws IOException {
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return getPeerCredentials(intValue());
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}
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long sendFile(DefaultFileRegion src, long baseOffset, long offset, long length) throws IOException {
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// Open the file-region as it may be created via the lazy constructor. This is needed as we directly access
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// the FileChannel field via JNI.
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src.open();
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long res = sendFile(intValue(), src, baseOffset, offset, length);
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if (res >= 0) {
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return res;
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}
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return ioResult("sendfile", (int) res);
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}
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public static BsdSocket newSocketStream() {
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return new BsdSocket(newSocketStream0());
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}
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public static BsdSocket newSocketDgram() {
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return new BsdSocket(newSocketDgram0());
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}
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public static BsdSocket newSocketDomain() {
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return new BsdSocket(newSocketDomain0());
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}
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private static native long sendFile(int socketFd, DefaultFileRegion src, long baseOffset,
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long offset, long length) throws IOException;
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private static native String[] getAcceptFilter(int fd) throws IOException;
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private static native int getTcpNoPush(int fd) throws IOException;
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private static native int getSndLowAt(int fd) throws IOException;
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private static native PeerCredentials getPeerCredentials(int fd) throws IOException;
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private static native void setAcceptFilter(int fd, String filterName, String filterArgs) throws IOException;
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private static native void setTcpNoPush(int fd, int tcpNoPush) throws IOException;
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private static native void setSndLowAt(int fd, int lowAt) throws IOException;
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}
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