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ByteBufUtil use IndexOfProcessor to find occurrence.

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Motivation:
The way of firstIndexOf and lastIndexOf iterating the ByteBuf is similar to forEachByte and forEachByteDesc, but have many range checks.
Modifications:
Use forEachByte and a IndexOfProcessor to find occurrence.
Result:
eliminate range checks
This commit is contained in:
Alwayswithme 2015-05-07 10:36:49 +08:00 committed by Norman Maurer
parent a8839cc20d
commit 04396acb75
1 changed files with 4 additions and 14 deletions
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18
buffer/src/main/java/io/netty/buffer/ByteBufUtil.java
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@ -16,6 +16,8 @@
package io.netty.buffer; package io.netty.buffer;
import static io.netty.util.internal.ObjectUtil.checkNotNull; import static io.netty.util.internal.ObjectUtil.checkNotNull;
import io.netty.util.ByteProcessor;
import io.netty.util.ByteString; import io.netty.util.ByteString;
import io.netty.util.CharsetUtil; import io.netty.util.CharsetUtil;
import io.netty.util.Recycler; import io.netty.util.Recycler;
@ -365,13 +367,7 @@ public final class ByteBufUtil {
return -1; return -1;
} }
for (int i = fromIndex; i < toIndex; i ++) { return buffer.forEachByte(fromIndex, toIndex - fromIndex, new ByteProcessor.IndexOfProcessor(value));
if (buffer.getByte(i) == value) {
return i;
}
}
return -1;
} }
private static int lastIndexOf(ByteBuf buffer, int fromIndex, int toIndex, byte value) { private static int lastIndexOf(ByteBuf buffer, int fromIndex, int toIndex, byte value) {
@ -380,13 +376,7 @@ public final class ByteBufUtil {
return -1; return -1;
} }
for (int i = fromIndex - 1; i >= toIndex; i --) { return buffer.forEachByteDesc(toIndex, fromIndex - toIndex, new ByteProcessor.IndexOfProcessor(value));
if (buffer.getByte(i) == value) {
return i;
}
}
return -1;
} }
/** /**