How to use

write

method

in

libcore.io.Os

@Override public Selector wakeup() {
  try {
    Libcore.os.write(wakeupOut, new byte[] { 1 }, 0, 1);
  } catch (ErrnoException ignored) {
  }
  return this;
}

public int write(FileDescriptor fd, ByteBuffer buffer) throws ErrnoException { return os.write(fd, buffer); }
public int write(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount) throws ErrnoException { return os.write(fd, bytes, byteOffset, byteCount); }

public int write(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount) throws ErrnoException { return os.write(fd, bytes, byteOffset, byteCount); }
public int writev(FileDescriptor fd, Object[] buffers, int[] offsets, int[] byteCounts) throws ErrnoException { return os.writev(fd, buffers, offsets, byteCounts); }

@Override public int write(FileDescriptor fd, ByteBuffer buffer) throws ErrnoException {
  BlockGuard.getThreadPolicy().onWriteToDisk();
  return os.write(fd, buffer);
}

@Override public int write(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount) throws ErrnoException {
  BlockGuard.getThreadPolicy().onWriteToDisk();
  return os.write(fd, bytes, byteOffset, byteCount);
}

/**
 * java.io always writes every byte it's asked to, or fails with an error. (That is, unlike
 * Unix it never just writes as many bytes as happens to be convenient.)
 */
public static void write(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount) throws IOException {
  Arrays.checkOffsetAndCount(bytes.length, byteOffset, byteCount);
  if (byteCount == 0) {
    return;
  }
  try {
    while (byteCount > 0) {
      int bytesWritten = Libcore.os.write(fd, bytes, byteOffset, byteCount);
      byteCount -= bytesWritten;
      byteOffset += bytesWritten;
    }
  } catch (ErrnoException errnoException) {
    throw errnoException.rethrowAsIOException();
  }
}

try {
  if (position == -1) {
    bytesWritten = Libcore.os.write(fd, buffer);
  } else {
    bytesWritten = Libcore.os.pwrite(fd, buffer, position);

@Override public Selector wakeup() {
  try {
    Libcore.os.write(wakeupOut, new byte[] { 1 }, 0, 1);
  } catch (ErrnoException ignored) {
  }
  return this;
}

@Override public Selector wakeup() {
  try {
    Libcore.os.write(wakeupOut, new byte[] { 1 }, 0, 1);
  } catch (ErrnoException ignored) {
  }
  return this;
}

@Override public Selector wakeup() {
  try {
    Libcore.os.write(wakeupOut, new byte[] { 1 }, 0, 1);
  } catch (ErrnoException ignored) {
  }
  return this;
}

@Override public Selector wakeup() {
  try {
    Libcore.os.write(wakeupOut, new byte[] { 1 }, 0, 1);
  } catch (ErrnoException ignored) {
  }
  return this;
}

@Override public Selector wakeup() {
  try {
    Libcore.os.write(wakeupOut, new byte[] { 1 }, 0, 1);
  } catch (ErrnoException ignored) {
  }
  return this;
}

@Override public Selector wakeup() {
  try {
    Libcore.os.write(wakeupOut, new byte[] { 1 }, 0, 1);
  } catch (ErrnoException ignored) {
  }
  return this;
}

@Override public int write(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount) throws ErrnoException {
  BlockGuard.getThreadPolicy().onWriteToDisk();
  return os.write(fd, bytes, byteOffset, byteCount);
}

@Override public int write(FileDescriptor fd, ByteBuffer buffer) throws ErrnoException {
  BlockGuard.getThreadPolicy().onWriteToDisk();
  return os.write(fd, buffer);
}

@Override public int write(FileDescriptor fd, ByteBuffer buffer) throws ErrnoException {
  BlockGuard.getThreadPolicy().onWriteToDisk();
  return os.write(fd, buffer);
}

@Override public int write(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount) throws ErrnoException {
  BlockGuard.getThreadPolicy().onWriteToDisk();
  return os.write(fd, bytes, byteOffset, byteCount);
}

@Override public int write(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount) throws ErrnoException {
  BlockGuard.getThreadPolicy().onWriteToDisk();
  return os.write(fd, bytes, byteOffset, byteCount);
}

@Override public int write(FileDescriptor fd, ByteBuffer buffer) throws ErrnoException {
  BlockGuard.getThreadPolicy().onWriteToDisk();
  return os.write(fd, buffer);
}

@Override public int write(FileDescriptor fd, byte[] bytes, int byteOffset, int byteCount) throws ErrnoException {
  BlockGuard.getThreadPolicy().onWriteToDisk();
  return os.write(fd, bytes, byteOffset, byteCount);
}