JNIEXPORT jlong JNICALL
Java_sun_nio_ch_DatagramDispatcher_writev0(JNIEnv *env, jclass clazz,
                                       jobject fdo, jlong address, jint len)
{
    jint fd = fdval(env, fdo);
    struct iovec *iov = (struct iovec *)jlong_to_ptr(address);
    struct msghdr m;
    ssize_t result = 0;
    if (len > 16) {
        len = 16;
    }

    m.msg_name = NULL;
    m.msg_namelen = 0;
    m.msg_iov = iov;
    m.msg_iovlen = len;
#ifdef __solaris__
    m.msg_accrights = NULL;
    m.msg_accrightslen = 0;
#endif

#ifdef __linux__
    m.msg_control = NULL;
    m.msg_controllen = 0;
#endif

    result = sendmsg(fd, &m, 0);
    if (result < 0 && errno == ECONNREFUSED) {
        JNU_ThrowByName(env, JNU_JAVANETPKG "PortUnreachableException", 0);
        return -2;
    }
    return convertLongReturnVal(env, (jlong)result, JNI_FALSE);
}
Example #2
0
JNIEXPORT jlong JNICALL
Java_sun_nio_ch_SocketDispatcher_readv0(JNIEnv *env, jclass clazz, jobject fdo,
                                        jlong address, jint len)
{
    /* set up */
    int i = 0;
    DWORD read = 0;
    DWORD flags = 0;
    jint fd = fdval(env, fdo);
    struct iovec *iovp = (struct iovec *)address;
    WSABUF *bufs = malloc(len * sizeof(WSABUF));
    jint rem = MAX_BUFFER_SIZE;

    if (bufs == 0) {
        JNU_ThrowOutOfMemoryError(env, 0);
        return IOS_THROWN;
    }

    /* copy iovec into WSABUF */
    for(i=0; i<len; i++) {
        jint iov_len = iovp[i].iov_len;
        if (iov_len > rem)
            iov_len = rem;
        bufs[i].buf = (char *)iovp[i].iov_base;
        bufs[i].len = (u_long)iov_len;
        rem -= iov_len;
        if (rem == 0) {
            len = i+1;
            break;
        }
    }

    /* read into the buffers */
    i = WSARecv((SOCKET)fd, /* Socket */
                bufs,           /* pointers to the buffers */
                (DWORD)len,     /* number of buffers to process */
                &read,          /* receives number of bytes read */
                &flags,         /* no flags */
                0,              /* no overlapped sockets */
                0);             /* no completion routine */

    /* clean up */
    free(bufs);

    if (i != 0) {
        int theErr = (jint)WSAGetLastError();
        if (theErr == WSAEWOULDBLOCK) {
            return IOS_UNAVAILABLE;
        }
        JNU_ThrowIOExceptionWithLastError(env, "Vector read failed");
        return IOS_THROWN;
    }

    return convertLongReturnVal(env, (jlong)read, JNI_TRUE);
}
JNIEXPORT jlong JNICALL
Java_sun_nio_ch_FileDispatcher_writev0(JNIEnv *env, jclass clazz,
                                       jobject fdo, jlong address, jint len)
{
    jint fd = fdval(env, fdo);
    struct iovec *iov = (struct iovec *)jlong_to_ptr(address);
    if (len > 16) {
        len = 16;
    }
    return convertLongReturnVal(env, writev(fd, iov, len), JNI_FALSE);
}
Example #4
0
JNIEXPORT jlong JNICALL
Java_sun_nio_ch_FileDispatcherImpl_readv0(JNIEnv *env, jclass clazz, jobject fdo,
                                       jlong address, jint len)
{
    DWORD read = 0;
    BOOL result = 0;
    jlong totalRead = 0;
    LPVOID loc;
    int i = 0;
    DWORD num = 0;
    struct iovec *iovecp = (struct iovec *)jlong_to_ptr(address);
    HANDLE h = (HANDLE)(handleval(env, fdo));

    if (h == INVALID_HANDLE_VALUE) {
        JNU_ThrowIOExceptionWithLastError(env, "Invalid handle");
        return IOS_THROWN;
    }

    for(i=0; i<len; i++) {
        loc = (LPVOID)jlong_to_ptr(iovecp[i].iov_base);
        num = iovecp[i].iov_len;
        result = ReadFile(h,                /* File handle to read */
                          loc,              /* address to put data */
                          num,              /* number of bytes to read */
                          &read,            /* number of bytes read */
                          NULL);            /* no overlapped struct */
        if (read > 0) {
            totalRead += read;
        }
        if (read < num) {
            break;
        }
    }

    if (result == 0) {
        int error = GetLastError();
        if (error == ERROR_BROKEN_PIPE) {
            return IOS_EOF;
        }
        if (error == ERROR_NO_DATA) {
            return IOS_UNAVAILABLE;
        }
        JNU_ThrowIOExceptionWithLastError(env, "Read failed");
        return IOS_THROWN;
    }

    return convertLongReturnVal(env, totalRead, JNI_TRUE);
}
Example #5
0
JNIEXPORT jlong JNICALL
Java_sun_nio_ch_FileDispatcherImpl_writev0(JNIEnv *env, jclass clazz, jobject fdo,
                                           jlong address, jint len, jboolean append)
{
    BOOL result = 0;
    DWORD written = 0;
    HANDLE h = (HANDLE)(handleval(env, fdo));
    jlong totalWritten = 0;

    if (h != INVALID_HANDLE_VALUE) {
        LPVOID loc;
        int i = 0;
        DWORD num = 0;
        struct iovec *iovecp = (struct iovec *)jlong_to_ptr(address);
        OVERLAPPED ov;
        LPOVERLAPPED lpOv;
        if (append == JNI_TRUE) {
            ov.Offset = (DWORD)0xFFFFFFFF;
            ov.OffsetHigh = (DWORD)0xFFFFFFFF;
            ov.hEvent = NULL;
            lpOv = &ov;
        } else {
            lpOv = NULL;
        }
        for(i=0; i<len; i++) {
            loc = (LPVOID)jlong_to_ptr(iovecp[i].iov_base);
            num = iovecp[i].iov_len;
            result = WriteFile(h,       /* File handle to write */
                               loc,     /* pointers to the buffers */
                               num,     /* number of bytes to write */
                               &written,/* receives number of bytes written */
                               lpOv);   /* overlapped struct */
            if (written > 0) {
                totalWritten += written;
            }
            if (written < num) {
                break;
            }
        }
    }

    if ((h == INVALID_HANDLE_VALUE) || (result == 0)) {
        JNU_ThrowIOExceptionWithLastError(env, "Write failed");
    }

    return convertLongReturnVal(env, totalWritten, JNI_FALSE);
}
Example #6
0
JNIEXPORT jlong JNICALL
Java_sun_nio_ch_DatagramDispatcher_readv0(JNIEnv *env, jclass clazz,
                                          jobject fdo, jlong address, jint len)
{
    /* set up */
    int i = 0;
    DWORD read = 0;
    DWORD flags = 0;
    jint fd = fdval(env, fdo);
    struct iovec *iovp = (struct iovec *)address;
    WSABUF *bufs = malloc(len * sizeof(WSABUF));

    /* copy iovec into WSABUF */
    for(i=0; i<len; i++) {
        bufs[i].buf = (char *)iovp[i].iov_base;
        bufs[i].len = (u_long)iovp[i].iov_len;
    }

    /* read into the buffers */
    i = WSARecv((SOCKET)fd, /* Socket */
            bufs,           /* pointers to the buffers */
            (DWORD)len,     /* number of buffers to process */
            &read,          /* receives number of bytes read */
            &flags,         /* no flags */
            0,              /* no overlapped sockets */
            0);             /* no completion routine */

    /* clean up */
    free(bufs);

    if (i != 0) {
        int theErr = (jint)WSAGetLastError();
        if (theErr == WSAEWOULDBLOCK) {
            return IOS_UNAVAILABLE;
        }
        if (theErr == WSAECONNRESET) {
            purgeOutstandingICMP(env, clazz, fd);
            JNU_ThrowByName(env, JNU_JAVANETPKG "PortUnreachableException", 0);
            return IOS_THROWN;
        }
        JNU_ThrowIOExceptionWithLastError(env, "Write failed");
        return IOS_THROWN;
    }

    return convertLongReturnVal(env, (jlong)read, JNI_TRUE);
}
Example #7
0
JNIEXPORT jlong JNICALL
Java_sun_nio_ch_SocketDispatcher_writev0(JNIEnv *env, jclass clazz,
        jobject fdo, jlong address, jint len)
{
    /* set up */
    int next_index, next_offset, ret=0;
    DWORD written = 0;
    jint fd = fdval(env, fdo);
    struct iovec *iovp = (struct iovec *)address;
    WSABUF *bufs = malloc(len * sizeof(WSABUF));
    jlong count = 0;

    if (bufs == 0) {
        JNU_ThrowOutOfMemoryError(env, 0);
        return IOS_THROWN;
    }

    // next buffer and offset to consume
    next_index = 0;
    next_offset = 0;

    while (next_index  < len) {
        DWORD buf_count = 0;

        /* Prepare the WSABUF array to a maximum total size of MAX_BUFFER_SIZE */
        jint rem = MAX_BUFFER_SIZE;
        while (next_index < len && rem > 0) {
            jint iov_len = iovp[next_index].iov_len - next_offset;
            char* ptr = (char *)iovp[next_index].iov_base;
            ptr += next_offset;
            if (iov_len > rem) {
                iov_len = rem;
                next_offset += rem;
            } else {
                next_index ++;
                next_offset = 0;
            }

            bufs[buf_count].buf = ptr;
            bufs[buf_count].len = (u_long)iov_len;
            buf_count++;

            rem -= iov_len;
        }

        /* write the buffers */
        ret = WSASend((SOCKET)fd,           /* Socket */
                      bufs,         /* pointers to the buffers */
                      buf_count,    /* number of buffers to process */
                      &written,     /* receives number of bytes written */
                      0,            /* no flags */
                      0,            /* no overlapped sockets */
                      0);           /* no completion routine */

        if (ret == SOCKET_ERROR) {
            break;
        }

        count += written;
    }

    /* clean up */
    free(bufs);

    if (ret == SOCKET_ERROR && count == 0) {
        int theErr = (jint)WSAGetLastError();
        if (theErr == WSAEWOULDBLOCK) {
            return IOS_UNAVAILABLE;
        }
        JNU_ThrowIOExceptionWithLastError(env, "Vector write failed");
        return IOS_THROWN;
    }

    return convertLongReturnVal(env, count, JNI_FALSE);
}