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Improved efficiency of startup methods.

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- ShpReader will copy the input stream into memory just once rather than for every header.
- ShpReader.CopyImageData switched to use Array.Copy since that uses some unsafe magic for speed.
- In ActorInfo, cache a GetType call and prevent needless materialization in PrerequisitesOf.
- In ObjectCreator, cache type and ctor lookups since these are expensive and often repeated.
- Implement IReadOnlyDictionary<T, U> on Cache<T, U> to provide some supplementary functions.
- In TechTree.GatherOwnedPrerequisites, rearrange a Boolean 'and' expression to evaluate expensive functions later in the chain, and use ContainsKey to speed up name check.
This commit is contained in:
RoosterDragon
2014-05-28 21:29:29 +01:00
parent 334a210231
commit e63f330717
8 changed files with 93 additions and 77 deletions
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32
OpenRA.Game/FileFormats/Format40.cs
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@@ -12,58 +12,58 @@ namespace OpenRA.FileFormats
{
public static class Format40
{
public static int DecodeInto( byte[] src, byte[] dest )
public static int DecodeInto(byte[] src, byte[] dest, int srcOffset)
{
var ctx = new FastByteReader(src);
var ctx = new FastByteReader(src, srcOffset);
int destIndex = 0;
while( true )
while (true)
{
byte i = ctx.ReadByte();
if( ( i & 0x80 ) == 0 )
if ((i & 0x80) == 0)
{
int count = i & 0x7F;
if( count == 0 )
if (count == 0)
{
// case 6
count = ctx.ReadByte();
byte value = ctx.ReadByte();
for( int end = destIndex + count ; destIndex < end ; destIndex++ )
dest[ destIndex ] ^= value;
for (int end = destIndex + count; destIndex < end; destIndex++)
dest[destIndex] ^= value;
}
else
{
// case 5
for( int end = destIndex + count ; destIndex < end ; destIndex++ )
for (int end = destIndex + count; destIndex < end; destIndex++)
dest[destIndex] ^= ctx.ReadByte();
}
}
else
{
int count = i & 0x7F;
if( count == 0 )
if (count == 0)
{
count = ctx.ReadWord();
if( count == 0 )
if (count == 0)
return destIndex;
if( ( count & 0x8000 ) == 0 )
if ((count & 0x8000) == 0)
{
// case 2
destIndex += ( count & 0x7FFF );
destIndex += (count & 0x7FFF);
}
else if( ( count & 0x4000 ) == 0 )
else if ((count & 0x4000) == 0)
{
// case 3
for( int end = destIndex + ( count & 0x3FFF ) ; destIndex < end ; destIndex++ )
for (int end = destIndex + (count & 0x3FFF); destIndex < end; destIndex++)
dest[destIndex] ^= ctx.ReadByte();
}
else
{
// case 4
byte value = ctx.ReadByte();
for( int end = destIndex + ( count & 0x3FFF ) ; destIndex < end ; destIndex++ )
dest[ destIndex ] ^= value;
for (int end = destIndex + (count & 0x3FFF); destIndex < end; destIndex++)
dest[destIndex] ^= value;
}
}
else