toolchain/gcc/libjava/java/nio/channels/natFileChannelImpl.cc

   1 // natFileChannelImpl.cc
   2
   3 /* Copyright (C) 2003  Free Software Foundation
   4
   5    This file is part of libgcj.
   6
   7 This software is copyrighted work licensed under the terms of the
   8 Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
   9 details.  */
  10
  11 #include <config.h>
  12
  13 #include <jvm.h>
  14
  15 #include <errno.h>
  16 #include <string.h>
  17 #include <sys/types.h>
  18
  19 #ifdef HAVE_UNISTD_H
  20 #include <unistd.h>
  21 #endif
  22
  23 #ifdef HAVE_FCNTL_H
  24 #include <fcntl.h>
  25 #endif
  26
  27 #include <gnu/gcj/RawData.h>
  28 #include <java/io/FileDescriptor.h>
  29 #include <java/io/IOException.h>
  30 #include <java/nio/ByteBuffer.h>
  31 #include <java/nio/channels/FileChannel.h>
  32 #include <java/nio/channels/FileChannelImpl.h>
  33
  34 jlong
  35 java::nio::channels::FileChannelImpl::size ()
  36 {
  37   return fd->getLength ();
  38 }
  39
  40 jlong
  41 java::nio::channels::FileChannelImpl::implPosition ()
  42 {
  43   return fd->getFilePointer ();
  44 }
  45
  46 java::nio::channels::FileChannel*
  47 java::nio::channels::FileChannelImpl::implPosition (jlong newPosition)
  48 {
  49   fd->seek (newPosition, ::java::io::FileDescriptor::SET, true);
  50   return this;
  51 }
  52
  53 jint
  54 java::nio::channels::FileChannelImpl::implRead (JArray<jbyte>* buffer,
  55                                                 jint offset, jint len)
  56 {
  57   return fd->read (buffer, offset, len);
  58 }
  59
  60 jint
  61 java::nio::channels::FileChannelImpl::implWrite (JArray<jbyte>* buffer,
  62                                                  jint offset, jint len)
  63 {
  64   fd->write (buffer, offset, len);
  65   return len;
  66 }
  67
  68 java::nio::channels::FileChannel*
  69 java::nio::channels::FileChannelImpl::implTruncate (jlong size)
  70 {
  71   fd->setLength (size);
  72   return this;
  73 }
  74
  75 gnu::gcj::RawData*
  76 java::nio::channels::FileChannelImpl::nio_mmap_file (jlong /*pos*/, jlong /*size*/,
  77                                                      jint /*mode*/)
  78 {
  79   throw new ::java::io::IOException (JvNewStringUTF ("mmap not implemented"));
  80 }
  81
  82 void
  83 java::nio::channels::FileChannelImpl::nio_unmmap_file (gnu::gcj::RawData* /*address*/,
  84                                                        jint /*size*/)
  85 {
  86   throw new ::java::io::IOException (JvNewStringUTF ("munmap not implemented"));
  87 }
  88
  89 void
  90 java::nio::channels::FileChannelImpl::nio_msync (gnu::gcj::RawData* /*map_address*/,
  91                                                  jint /*length*/)
  92 {
  93   throw new ::java::io::IOException (JvNewStringUTF ("msync not implemented"));
  94 }