channels/FileChannel/Transfers.java

58     private static void writeBytes(byte[] ba, FileChannel fc,
62         fc.position(off);
63         if (fc.write(ByteBuffer.wrap(ba, 0, len)) != len)
65         fc.position(0);
69                                          FileChannel fc, int off, int len)
75         writeBytes(ba, fc, off, len);
78     private static void writeZeroBytes(FileChannel fc, int off, int len)
82         writeBytes(ba, fc, off, len);
85     private static void checkBytes(FileChannel fc, int off, int len,
90         fc.position(off);
91         if (fc.read(bb) != len)
99     private static void checkRandomBytes(FileChannel fc, int off, int len,
106         checkBytes(fc, off, len, ba);
109     private static void checkZeroBytes(FileChannel fc, int off, int len)
113         checkBytes(fc, off, len, ba);
118     private static void dump(FileChannel fc)
121         int sz = (int)fc.size();
123         fc.position(0);
124         if (fc.read(bb) != sz)
202         private final FileChannel fc;
208             fc = raf.getChannel();
209             fc.position(0);
210             writeRandomBytes(seed, fc, 0, size);
214             return fc;
218             if (fc.position() != size)
220                                   + fc.position() + " (expected " + size +
222             checkRandomBytes(fc, 0, size, seed);
223             fc.close();
300         private final FileChannel fc;
306             fc = raf.getChannel();
307             fc.position(0);
311             return fc;
315             if (fc.position() != size)
317                                   + fc.position() + " (expected " + size + ")");
318             checkRandomBytes(fc, 0, size, seed);
319             fc.close();
422     static void testTo(long seed, FileChannel fc, int off, int len, Target tgt)
428         writeZeroBytes(fc, 0, MAX_FILE_SIZE);
429         writeRandomBytes(seed, fc, off, len);
433         fc.position(pos);
435         int n = (int)fc.transferTo(off, len, tgt.channel());
441         if (fc.position() != pos)
444             dump(fc);
445         checkRandomBytes(fc, off, len, seed);
446         writeZeroBytes(fc, off, len);
447         checkZeroBytes(fc, 0, MAX_FILE_SIZE);
453     static void testFrom(long seed, Source src, FileChannel fc, int off, int len)
459         writeZeroBytes(fc, 0, MAX_FILE_SIZE);
463         fc.position(pos);
465         int n = (int)fc.transferFrom(src.channel(), off, len);
474         if (fc.position() != pos)
477             dump(fc);
478         checkRandomBytes(fc, off, len, seed);
479         writeZeroBytes(fc, off, len);
480         checkZeroBytes(fc, 0, MAX_FILE_SIZE);
506         try (FileChannel fc = new RandomAccessFile(fn, "rw").getChannel()) {
530                                     testTo(s, fc, off, len, tgt);
539                                     testFrom(s, src, fc, off, len);