J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2000-2003 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | #include <windows.h> |
| 27 | #include <winsock2.h> |
| 28 | #include <ctype.h> |
| 29 | #include "jni.h" |
| 30 | #include "jni_util.h" |
| 31 | #include "jvm.h" |
| 32 | #include "jlong.h" |
| 33 | #include "sun_nio_ch_SocketDispatcher.h" |
| 34 | #include "nio.h" |
| 35 | #include "nio_util.h" |
| 36 | |
| 37 | |
| 38 | /************************************************************** |
| 39 | * SocketDispatcher.c |
| 40 | */ |
| 41 | |
| 42 | JNIEXPORT jint JNICALL |
| 43 | Java_sun_nio_ch_SocketDispatcher_read0(JNIEnv *env, jclass clazz, jobject fdo, |
| 44 | jlong address, jint len) |
| 45 | { |
| 46 | /* set up */ |
| 47 | int i = 0; |
| 48 | DWORD read = 0; |
| 49 | DWORD flags = 0; |
| 50 | jint fd = fdval(env, fdo); |
| 51 | WSABUF buf; |
| 52 | |
| 53 | /* destination buffer and size */ |
| 54 | buf.buf = (char *)address; |
| 55 | buf.len = (u_long)len; |
| 56 | |
| 57 | /* read into the buffers */ |
| 58 | i = WSARecv((SOCKET)fd, /* Socket */ |
| 59 | &buf, /* pointers to the buffers */ |
| 60 | (DWORD)1, /* number of buffers to process */ |
| 61 | &read, /* receives number of bytes read */ |
| 62 | &flags, /* no flags */ |
| 63 | 0, /* no overlapped sockets */ |
| 64 | 0); /* no completion routine */ |
| 65 | |
| 66 | if (i == SOCKET_ERROR) { |
| 67 | int theErr = (jint)WSAGetLastError(); |
| 68 | if (theErr == WSAEWOULDBLOCK) { |
| 69 | return IOS_UNAVAILABLE; |
| 70 | } |
| 71 | JNU_ThrowIOExceptionWithLastError(env, "Read failed"); |
| 72 | return IOS_THROWN; |
| 73 | } |
| 74 | |
| 75 | return convertReturnVal(env, (jint)read, JNI_TRUE); |
| 76 | } |
| 77 | |
| 78 | JNIEXPORT jlong JNICALL |
| 79 | Java_sun_nio_ch_SocketDispatcher_readv0(JNIEnv *env, jclass clazz, jobject fdo, |
| 80 | jlong address, jint len) |
| 81 | { |
| 82 | /* set up */ |
| 83 | int i = 0; |
| 84 | DWORD read = 0; |
| 85 | DWORD flags = 0; |
| 86 | jint fd = fdval(env, fdo); |
| 87 | struct iovec *iovp = (struct iovec *)address; |
| 88 | WSABUF *bufs = malloc(len * sizeof(WSABUF)); |
| 89 | |
| 90 | if (bufs == 0) { |
| 91 | JNU_ThrowOutOfMemoryError(env, 0); |
| 92 | return IOS_THROWN; |
| 93 | } |
| 94 | |
| 95 | if ((isNT() == JNI_FALSE) && (len > 16)) { |
| 96 | len = 16; |
| 97 | } |
| 98 | |
| 99 | /* copy iovec into WSABUF */ |
| 100 | for(i=0; i<len; i++) { |
| 101 | bufs[i].buf = (char *)iovp[i].iov_base; |
| 102 | bufs[i].len = (u_long)iovp[i].iov_len; |
| 103 | } |
| 104 | |
| 105 | /* read into the buffers */ |
| 106 | i = WSARecv((SOCKET)fd, /* Socket */ |
| 107 | bufs, /* pointers to the buffers */ |
| 108 | (DWORD)len, /* number of buffers to process */ |
| 109 | &read, /* receives number of bytes read */ |
| 110 | &flags, /* no flags */ |
| 111 | 0, /* no overlapped sockets */ |
| 112 | 0); /* no completion routine */ |
| 113 | |
| 114 | /* clean up */ |
| 115 | free(bufs); |
| 116 | |
| 117 | if (i != 0) { |
| 118 | int theErr = (jint)WSAGetLastError(); |
| 119 | if (theErr == WSAEWOULDBLOCK) { |
| 120 | return IOS_UNAVAILABLE; |
| 121 | } |
| 122 | JNU_ThrowIOExceptionWithLastError(env, "Vector read failed"); |
| 123 | return IOS_THROWN; |
| 124 | } |
| 125 | |
| 126 | return convertLongReturnVal(env, (jlong)read, JNI_TRUE); |
| 127 | } |
| 128 | |
| 129 | JNIEXPORT jint JNICALL |
| 130 | Java_sun_nio_ch_SocketDispatcher_write0(JNIEnv *env, jclass clazz, jobject fdo, |
| 131 | jlong address, jint len) |
| 132 | { |
| 133 | /* set up */ |
| 134 | int i = 0; |
| 135 | DWORD written = 0; |
| 136 | jint fd = fdval(env, fdo); |
| 137 | WSABUF buf; |
| 138 | |
| 139 | /* copy iovec into WSABUF */ |
| 140 | buf.buf = (char *)address; |
| 141 | buf.len = (u_long)len; |
| 142 | |
| 143 | /* read into the buffers */ |
| 144 | i = WSASend((SOCKET)fd, /* Socket */ |
| 145 | &buf, /* pointers to the buffers */ |
| 146 | (DWORD)1, /* number of buffers to process */ |
| 147 | &written, /* receives number of bytes written */ |
| 148 | 0, /* no flags */ |
| 149 | 0, /* no overlapped sockets */ |
| 150 | 0); /* no completion routine */ |
| 151 | |
| 152 | if (i == SOCKET_ERROR) { |
| 153 | int theErr = (jint)WSAGetLastError(); |
| 154 | if (theErr == WSAEWOULDBLOCK) { |
| 155 | return IOS_UNAVAILABLE; |
| 156 | } |
| 157 | JNU_ThrowIOExceptionWithLastError(env, "Write failed"); |
| 158 | return IOS_THROWN; |
| 159 | } |
| 160 | |
| 161 | return convertReturnVal(env, (jint)written, JNI_FALSE); |
| 162 | } |
| 163 | |
| 164 | JNIEXPORT jlong JNICALL |
| 165 | Java_sun_nio_ch_SocketDispatcher_writev0(JNIEnv *env, jclass clazz, |
| 166 | jobject fdo, jlong address, jint len) |
| 167 | { |
| 168 | /* set up */ |
| 169 | int i = 0; |
| 170 | DWORD written = 0; |
| 171 | jint fd = fdval(env, fdo); |
| 172 | struct iovec *iovp = (struct iovec *)address; |
| 173 | WSABUF *bufs = malloc(len * sizeof(WSABUF)); |
| 174 | |
| 175 | if (bufs == 0) { |
| 176 | JNU_ThrowOutOfMemoryError(env, 0); |
| 177 | return IOS_THROWN; |
| 178 | } |
| 179 | |
| 180 | if ((isNT() == JNI_FALSE) && (len > 16)) { |
| 181 | len = 16; |
| 182 | } |
| 183 | |
| 184 | /* copy iovec into WSABUF */ |
| 185 | for(i=0; i<len; i++) { |
| 186 | bufs[i].buf = (char *)iovp[i].iov_base; |
| 187 | bufs[i].len = (u_long)iovp[i].iov_len; |
| 188 | } |
| 189 | |
| 190 | /* read into the buffers */ |
| 191 | i = WSASend((SOCKET)fd, /* Socket */ |
| 192 | bufs, /* pointers to the buffers */ |
| 193 | (DWORD)len, /* number of buffers to process */ |
| 194 | &written, /* receives number of bytes written */ |
| 195 | 0, /* no flags */ |
| 196 | 0, /* no overlapped sockets */ |
| 197 | 0); /* no completion routine */ |
| 198 | |
| 199 | /* clean up */ |
| 200 | free(bufs); |
| 201 | |
| 202 | if (i != 0) { |
| 203 | int theErr = (jint)WSAGetLastError(); |
| 204 | if (theErr == WSAEWOULDBLOCK) { |
| 205 | return IOS_UNAVAILABLE; |
| 206 | } |
| 207 | JNU_ThrowIOExceptionWithLastError(env, "Vector write failed"); |
| 208 | return IOS_THROWN; |
| 209 | } |
| 210 | |
| 211 | return convertLongReturnVal(env, (jlong)written, JNI_FALSE); |
| 212 | } |
| 213 | |
| 214 | JNIEXPORT void JNICALL |
| 215 | Java_sun_nio_ch_SocketDispatcher_close0(JNIEnv *env, jclass clazz, |
| 216 | jobject fdo) |
| 217 | { |
| 218 | jint fd = fdval(env, fdo); |
| 219 | struct linger l; |
| 220 | int len = sizeof(l); |
| 221 | |
| 222 | if (fd != -1) { |
| 223 | int result = 0; |
| 224 | if (getsockopt(fd, SOL_SOCKET, SO_LINGER, (char *)&l, &len) == 0) { |
| 225 | if (l.l_onoff == 0) { |
| 226 | WSASendDisconnect(fd, NULL); |
| 227 | } |
| 228 | } |
| 229 | result = closesocket(fd); |
| 230 | if (result == SOCKET_ERROR) { |
| 231 | JNU_ThrowIOExceptionWithLastError(env, "Socket close failed"); |
| 232 | } |
| 233 | } |
| 234 | } |