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more performance tuning

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This commit is contained in:
Arndt 2016-08-28 19:43:40 +02:00
parent acb7c6b16f
commit ea572ad47f
10 changed files with 357 additions and 165 deletions
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27
brouter-util/src/main/java/btools/util/ByteDataReader.java
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@ -107,23 +107,6 @@ public class ByteDataReader
return ( v & 1 ) == 0 ? v >> 1 : -(v >> 1 );
}
public final int readVarLengthUnsigned_old()
{
int v = 0;
int shift = 0;
for ( ;; )
{
byte b = ab[aboffset++];
v |= ( ( b & 0x7f ) << shift );
if ( ( b & 0x80 ) == 0 )
{
break;
}
shift += 7;
}
return v;
}
public final int readVarLengthUnsigned()
{
byte b;
@ -135,15 +118,7 @@ public class ByteDataReader
if ( b >= 0 ) return v;
v |= ( (b=ab[aboffset++]) & 0x7f ) << 21;
if ( b >= 0 ) return v;
v |= ( (b=ab[aboffset++]) & 0x7f ) << 28;
if ( b >= 0 ) return v;
v |= ( (b=ab[aboffset++]) & 0x7f ) << 35;
if ( b >= 0 ) return v;
v |= ( (b=ab[aboffset++]) & 0x7f ) << 42;
if ( b >= 0 ) return v;
v |= ( (b=ab[aboffset++]) & 0x7f ) << 49;
if ( b >= 0 ) return v;
v |= ( (b=ab[aboffset++]) & 0x7f ) << 56;
v |= ( (b=ab[aboffset++]) & 0xf ) << 28;
return v;
}