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Speed up writing of messages with many fields

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This commit is contained in:
Jan Tattermusch 2020-06-12 11:11:09 +02:00
parent 9d6969bec4
commit 468c3ba8c6
1 changed files with 5 additions and 1 deletions
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6
csharp/src/Google.Protobuf/WritingPrimitives.cs
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@ -399,7 +399,11 @@ namespace Google.Protobuf
}
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
// This method is intentionally not marked as "AggressiveInlining", because it slows down
// serialization of messages with lots of empty fields. Likely explanation is that
// thw WriteRawTag invocations in InternalWriteTo method get inlined too deep and that makes
// skipping fields which are not present more expensive (which is especially constly for
// messages with lots of fields of which only a few are present).
public static void WriteRawByte(ref Span<byte> buffer, ref WriterInternalState state, byte value)
{
if (state.position == state.limit)