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Use System.arraycopy for write(byte[]) apache/spark#12074 #139

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Merged
xerial merged 1 commit into from
Mar 31, 2016
Merged

Use System.arraycopy for write(byte[]) apache/spark#12074 #139

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21 changes: 19 additions & 2 deletions src/main/java/org/xerial/snappy/SnappyOutputStream.java
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Original file line number Diff line number Diff line change
Expand Up @@ -109,10 +109,27 @@ public SnappyOutputStream(OutputStream out, int blockSize, BufferAllocatorFactor
* @see java.io.OutputStream#write(byte[], int, int)
*/
@Override
public void write(byte[] b, int off, int len)
public void write(byte[] b, int byteOffset, int byteLength)
throws IOException
{
rawWrite(b, off, len);
if (closed) {
throw new IOException("Stream is closed");
}
int cursor = 0;
while (cursor < byteLength) {
int readLen = Math.min(byteLength - cursor, blockSize - inputCursor);
// copy the input data to uncompressed buffer
if (readLen > 0) {
System.arraycopy(b, byteOffset + cursor, inputBuffer, inputCursor, readLen);
inputCursor += readLen;
}
if (inputCursor < blockSize) {
return;
}

compressInput();
cursor += readLen;
}
}

/**
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