.

wcfs/δbtail.go

@@ -180,6 +180,7 @@ type ΔBtail struct {
 	trackIdx trackIndex
 
 	// XXX root -> tracked holes
+	// XXX move -> ΔTtail ?
 	holeIdxByRoot map[zodb.Oid]treeSetKey
 
 //	// tracked objects that are not yet taken into account in current δBtail

wcfs/δftail.go

@@ -74,6 +74,8 @@ type ΔFtail struct {
 	δBtail  *ΔBtail
 	fileIdx map[zodb.Oid]SetBigFile	// tree-root -> {} BigFile as of @head
 
+	// XXX don't need vδF - everything is reconstructed at runtime from .δBtail.vδT
+	//     this way we also don't need to keep up updating vδF from vδT on its rebuild during.
 	// data with δF changes. Actual for part of tracked set that was taken
 	// into account.
 	vδF []ΔF
@@ -294,6 +296,7 @@ func (δFtail *ΔFtail) Update(δZ *zodb.EventCommit, zhead *ZConn) (_ ΔF, err
 	return δF, nil
 }
 
+// XXX kill after vδF is gone
 // update processes new track requests and updates vδF.
 //
 // If file != nil only track requests related to file are processed.
@@ -341,6 +344,7 @@ func (δFtail *ΔFtail) update(file *BigFile) {
 // ForgetPast discards all δFtail entries with rev ≤ revCut.
 func (δFtail *ΔFtail) ForgetPast(revCut zodb.Tid) {
 	panic("TODO")
+	// XXX -> .δBtail.ForgetPast(recCut)
 }
 
 // XXX
@@ -362,6 +366,9 @@ func (δFtail *ΔFtail) SliceByRev(lo, hi zodb.Tid) /*readonly*/ []ΔF {
 func (δFtail *ΔFtail) SliceByFileRev(file *BigFile, lo, hi zodb.Tid) /*readonly*/[]*ΔFile {
 	δassertSlice(δFtail, lo, hi)
 
+	// FIXME rework to just query .δBtail.SliceByRootRev(file.blktab, lo, hi) +
+	//       merge δZBlk history iwith that.
+
 	// XXX locking?
 	δFtail.update(file)