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Check if the array contents are already the same, massive performance improvement for Anvil in a lot of cases

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This commit is contained in:
Dylan K. Taylor 2017-01-18 20:04:19 +00:00
parent 7de7593b89
commit e4c889ae16
1 changed files with 33 additions and 26 deletions
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7
src/pocketmine/level/format/io/ChunkUtils.php
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@ -34,6 +34,7 @@ class ChunkUtils{
*/ */
public static final function reorderByteArray(string $array) : string{ public static final function reorderByteArray(string $array) : string{
$result = str_repeat("\x00", 4096); $result = str_repeat("\x00", 4096);
if($array !== $result){
$i = 0; $i = 0;
$zM = 0; $zM = 0;
$yM = 0; $yM = 0;
@ -47,6 +48,8 @@ class ChunkUtils{
} }
} }
} }
}
return $result; return $result;
} }
@ -60,6 +63,8 @@ class ChunkUtils{
*/ */
public static final function reorderNibbleArray(string $array, string $commonValue = "\x00") : string{ public static final function reorderNibbleArray(string $array, string $commonValue = "\x00") : string{
$result = str_repeat($commonValue, 2048); $result = str_repeat($commonValue, 2048);
if($array !== $result){
$i = 0; $i = 0;
for($x = 0; $x < 8; ++$x){ for($x = 0; $x < 8; ++$x){
for($z = 0; $z < 16; ++$z){ for($z = 0; $z < 16; ++$z){
@ -80,6 +85,8 @@ class ChunkUtils{
} }
$i += 128; $i += 128;
} }
}
return $result; return $result;
} }