| /* |
| * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| #include <stdlib.h> |
| #include <errno.h> |
| #include <string.h> |
| #include <sys/types.h> |
| #include <sys/socket.h> |
| |
| #include "jni_util.h" |
| #include "jvm.h" |
| #include "net_util.h" |
| |
| #include <nativehelper/JNIHelp.h> |
| |
| #define NATIVE_METHOD(className, functionName, signature) \ |
| { #functionName, signature, (void*)(className ## _ ## functionName) } |
| |
| #define min(a, b) ((a) < (b) ? (a) : (b)) |
| |
| /* |
| * SocketOutputStream |
| */ |
| |
| static jfieldID IO_fd_fdID; |
| |
| /* |
| * Class: java_net_SocketOutputStream |
| * Method: socketWrite0 |
| * Signature: (Ljava/io/FileDescriptor;[BII)V |
| */ |
| JNIEXPORT void JNICALL |
| SocketOutputStream_socketWrite0(JNIEnv *env, jobject this, |
| jobject fdObj, |
| jbyteArray data, |
| jint off, jint len) { |
| char *bufP; |
| char BUF[MAX_BUFFER_LEN]; |
| int buflen; |
| int fd; |
| |
| if (IS_NULL(fdObj)) { |
| JNU_ThrowByName(env, "java/net/SocketException", "Socket closed"); |
| return; |
| } else { |
| fd = (*env)->GetIntField(env, fdObj, IO_fd_fdID); |
| /* Bug 4086704 - If the Socket associated with this file descriptor |
| * was closed (sysCloseFD), the the file descriptor is set to -1. |
| */ |
| if (fd == -1) { |
| JNU_ThrowByName(env, "java/net/SocketException", "Socket closed"); |
| return; |
| } |
| |
| } |
| |
| if (len <= MAX_BUFFER_LEN) { |
| bufP = BUF; |
| buflen = MAX_BUFFER_LEN; |
| } else { |
| buflen = min(MAX_HEAP_BUFFER_LEN, len); |
| bufP = (char *)malloc((size_t)buflen); |
| |
| /* if heap exhausted resort to stack buffer */ |
| if (bufP == NULL) { |
| bufP = BUF; |
| buflen = MAX_BUFFER_LEN; |
| } |
| } |
| |
| while(len > 0) { |
| int loff = 0; |
| int chunkLen = min(buflen, len); |
| int llen = chunkLen; |
| (*env)->GetByteArrayRegion(env, data, off, chunkLen, (jbyte *)bufP); |
| |
| while(llen > 0) { |
| int n = NET_Send(fd, bufP + loff, llen, 0); |
| if (n > 0) { |
| llen -= n; |
| loff += n; |
| continue; |
| } |
| if (n == JVM_IO_INTR) { |
| JNU_ThrowByName(env, "java/io/InterruptedIOException", 0); |
| } else { |
| if (errno == ECONNRESET) { |
| JNU_ThrowByName(env, "sun/net/ConnectionResetException", |
| "Connection reset"); |
| } else { |
| NET_ThrowByNameWithLastError(env, "java/net/SocketException", |
| "Write failed"); |
| } |
| } |
| if (bufP != BUF) { |
| free(bufP); |
| } |
| return; |
| } |
| len -= chunkLen; |
| off += chunkLen; |
| } |
| |
| if (bufP != BUF) { |
| free(bufP); |
| } |
| } |
| |
| static JNINativeMethod gMethods[] = { |
| NATIVE_METHOD(SocketOutputStream, socketWrite0, "(Ljava/io/FileDescriptor;[BII)V"), |
| }; |
| |
| void register_java_net_SocketOutputStream(JNIEnv* env) { |
| jniRegisterNativeMethods(env, "java/net/SocketOutputStream", gMethods, NELEM(gMethods)); |
| |
| // Init field ids |
| IO_fd_fdID = NET_GetFileDescriptorID(env); |
| } |