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Performance tweak to FlatBufferBuilder.CreateString method to remove the unnecessary byte buffer allocation

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(See https://github.com/google/flatbuffers/issues/55#issuecomment-164031718 for stats)
This commit is contained in:
Oli Wilkinson
2015-12-11 14:57:59 -05:00
parent 42b48bd55f
commit b8187e5b82
1 changed files with 5 additions and 6 deletions
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11
net/FlatBuffers/FlatBufferBuilder.cs
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@@ -276,12 +276,11 @@ namespace FlatBuffers
public StringOffset CreateString(string s) public StringOffset CreateString(string s)
{ {
NotNested(); NotNested();
byte[] utf8 = Encoding.UTF8.GetBytes(s); AddByte(0);
AddByte((byte)0); var utf8StringLen = Encoding.UTF8.GetByteCount(s);
StartVector(1, utf8.Length, 1); StartVector(1, utf8StringLen, 1);
Buffer.BlockCopy(utf8, 0, _bb.Data, _space -= utf8.Length, Encoding.UTF8.GetBytes(s, 0, s.Length, _bb.Data, _space -= utf8StringLen);
utf8.Length);
return new StringOffset(EndVector().Value); return new StringOffset(EndVector().Value);
} }