original-brownbear commented on code in PR #12453:
URL: https://github.com/apache/lucene/pull/12453#discussion_r1271422741
##########
lucene/core/src/java/org/apache/lucene/store/BufferedIndexInput.java:
##########
@@ -159,6 +159,63 @@ public final long readLong() throws IOException {
}
}
+ @Override
+ public void readFloats(float[] floats, int offset, int len) throws
IOException {
+ int remaining = len;
+ while (remaining > 0) {
+ int cnt = Math.min(buffer.remaining() / Float.BYTES, remaining);
+ buffer.asFloatBuffer().get(floats, offset + len - remaining, cnt);
+ buffer.position(buffer.position() + Float.BYTES * cnt);
+ remaining -= cnt;
+ if (remaining > 0) {
+ if (buffer.hasRemaining()) {
+ floats[offset + len - remaining] = Float.intBitsToFloat(readInt());
+ --remaining;
+ } else {
+ refill();
+ }
+ }
+ }
+ }
+
+ @Override
+ public void readLongs(long[] dst, int offset, int length) throws IOException
{
Review Comment:
I think it would come out to about that code if we inlined `readBytes` with
`useBuffer=true` except that
```java
if (buffer.hasRemaining()) {
dst[offset + len - remaining] = readByte();
--remaining;
}
```
is never entered, `hasRemaining` is just always false because we don't have
anything like 1 one of 4 int bytes available.
-> the difference I think is just in that we have to deal with the alignment
at the buffer boundary
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