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8305811: (bf) Improve performance of CharBuffer::append(CharSequence[,int,int])

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Reviewed-by: alanb
This commit is contained in:
Brian Burkhalter 2023-04-17 20:17:23 +00:00
parent 525a91e3fa
commit 8858d54342
3 changed files with 205 additions and 1 deletions
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9
src/java.base/share/classes/java/nio/X-Buffer.java.template
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@ -2005,6 +2005,8 @@ public abstract sealed class $Type$Buffer
public $Type$Buffer append(CharSequence csq) {
if (csq == null)
return put("null");
else if (csq instanceof CharBuffer cb)
return put(cb);
else
return put(csq.toString());
}
@ -2042,6 +2044,13 @@ public abstract sealed class $Type$Buffer
* @since 1.5
*/
public $Type$Buffer append(CharSequence csq, int start, int end) {
if (csq instanceof CharBuffer cb) {
int pos = position();
int length = end - start;
put(pos, cb, start, length);
position(pos + length);
return this;
}
CharSequence cs = (csq == null ? "null" : csq);
return put(cs.subSequence(start, end).toString());
}