@Override
public int directRead(byte[] b, int off, int len) throws IOException {
ByteBuffer buf = mLocalFileChannel.map(FileChannel.MapMode.READ_ONLY, getPosition(), len);
buf.get(b, off, len);
BufferUtils.cleanDirectBuffer(buf);
return len;
}
@Override
protected void bufferedRead(int len) throws IOException {
if (mBuffer.isDirect()) { // Buffer may not be direct on initialization
BufferUtils.cleanDirectBuffer(mBuffer);
}
mBuffer = mLocalFileChannel.map(FileChannel.MapMode.READ_ONLY, getPosition(), len);
}
@Override
public void close() throws IOException {
if (mClosed) {
return;
}
try {
if (mBlockIsRead) {
mWorkerClient.accessBlock(mBlockId);
ClientContext.getClientMetrics().incBlocksReadLocal(1);
}
mWorkerClient.unlockBlock(mBlockId);
} catch (TachyonException e) {
throw new IOException(e);
} finally {
mContext.releaseWorkerClient(mWorkerClient);
mCloser.close();
if (mBuffer != null && mBuffer.isDirect()) {
BufferUtils.cleanDirectBuffer(mBuffer);
}
}
mClosed = true;
}