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Handle corner case where we can reuse a temp file totally

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This commit is contained in:
Jakob Borg 2014-10-06 10:14:36 +02:00
parent 5c07477de4
commit 6c383e279f
1 changed files with 12 additions and 3 deletions
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15
internal/model/puller.go
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@ -291,7 +291,7 @@ func (p *Puller) pullerIteration(ncopiers, npullers, nfinishers int) int {
default:
// A new or changed file. This is the only case where we do stuff
// in the background; the other three are done synchronously.
p.handleFile(file, copyChan, pullChan)
p.handleFile(file, copyChan, pullChan, finisherChan)
}
changed++
@ -393,7 +393,7 @@ func (p *Puller) deleteFile(file protocol.FileInfo) {
// handleFile queues the copies and pulls as necessary for a single new or
// changed file.
func (p *Puller) handleFile(file protocol.FileInfo, copyChan chan<- copyBlocksState, pullChan chan<- pullBlockState) {
func (p *Puller) handleFile(file protocol.FileInfo, copyChan chan<- copyBlocksState, pullChan chan<- pullBlockState, finisherChan chan<- *sharedPullerState) {
curFile := p.model.CurrentFolderFile(p.folder, file.Name)
copyBlocks, pullBlocks := scanner.BlockDiff(curFile.Blocks, file.Blocks)
@ -474,7 +474,7 @@ func (p *Puller) handleFile(file protocol.FileInfo, copyChan chan<- copyBlocksSt
}
if debug {
l.Debugf("%v need file %s; copy %d, pull %d", p, file.Name, len(copyBlocks), len(pullBlocks))
l.Debugf("%v need file %s; copy %d, pull %d, reuse %v", p, file.Name, len(copyBlocks), len(pullBlocks), reuse)
}
if len(copyBlocks) > 0 {
@ -494,6 +494,15 @@ func (p *Puller) handleFile(file protocol.FileInfo, copyChan chan<- copyBlocksSt
pullChan <- ps
}
}
if len(pullBlocks) == 0 && len(copyBlocks) == 0 {
if !reuse {
panic("bug: nothing to do with file?")
}
// We have a temp file that we can reuse totally. Jump directly to the
// finisher stage.
finisherChan <- &s
}
}
// shortcutFile sets file mode and modification time, when that's the only