@ -90,23 +90,6 @@ import org.eclipse.jgit.util.LongList;
* objects are similar .
* /
public final class DfsPackFile {
/ * *
* File offset used to cache { @link # index } in { @link DfsBlockCache } .
* < p >
* To better manage memory , the forward index is stored as a single block in
* the block cache under this file position . A negative value is used
* because it cannot occur in a normal pack file , and it is less likely to
* collide with a valid data block from the file as the high bits will all
* be set when treated as an unsigned long by the cache code .
* /
private static final long POS_INDEX = - 1 ;
/** Offset used to cache {@link #reverseIndex}. See {@link #POS_INDEX}. */
private static final long POS_REVERSE_INDEX = - 2 ;
/** Offset used to cache {@link #bitmapIndex}. See {@link #POS_INDEX}. */
private static final long POS_BITMAP_INDEX = - 3 ;
/** Cache that owns this pack file and its data. */
private final DfsBlockCache cache ;
@ -115,6 +98,9 @@ public final class DfsPackFile {
/** Unique identity of this pack while in-memory. */
final DfsStreamKey key ;
final DfsStreamKey idxKey = new DfsStreamKey ( ) ;
final DfsStreamKey reverseIdxKey = new DfsStreamKey ( ) ;
final DfsStreamKey bitmapKey = new DfsStreamKey ( ) ;
/ * *
* Total number of bytes in this pack file .
@ -211,7 +197,7 @@ public final class DfsPackFile {
long objCnt = idx . getObjectCount ( ) ;
int recSize = Constants . OBJECT_ID_LENGTH + 8 ;
int sz = ( int ) Math . min ( objCnt * recSize , Integer . MAX_VALUE ) ;
index = cache . put ( key , POS_INDEX , sz , idx ) ;
index = cache . put ( idxKey , 0 , sz , idx ) ;
}
/ * *
@ -356,7 +342,7 @@ public final class DfsPackFile {
throw e2 ;
}
bitmapIndex = cache . put ( key , POS_BITMAP_INDEX ,
bitmapIndex = cache . put ( bitmapKey , 0 ,
( int ) Math . min ( size , Integer . MAX_VALUE ) , idx ) ;
return idx ;
}
@ -382,7 +368,7 @@ public final class DfsPackFile {
PackReverseIndex revidx = new PackReverseIndex ( idx ) ;
int sz = ( int ) Math . min (
idx . getObjectCount ( ) * 8 , Integer . MAX_VALUE ) ;
reverseIndex = cache . put ( key , POS_REVERSE_INDEX , sz , revidx ) ;
reverseIndex = cache . put ( reverseIdxKey , 0 , sz , revidx ) ;
return revidx ;
}
}