feat: enhance garbage collection logging with total GC time and improved stat formatting

vfs/disk/disk.go

@@ -78,7 +78,12 @@ func (d *DiskFS) init() {
 	d.walk(d.root)
 	d.sg.Wait()
 
-	logger.Logger.Info().Str("name", d.Name()).Str("root", d.root).Str("capacity", units.HumanSize(float64(d.capacity))).Str("duration", time.Since(tstart).String()).Msg("init")
+	logger.Logger.Info().
+		Str("name", d.Name()).
+		Str("root", d.root).
+		Str("capacity", units.HumanSize(float64(d.capacity))).
+		Str("duration", time.Since(tstart).String()).
+		Msg("init")
 }
 
 func (d *DiskFS) walk(path string) {

vfs/gc/gc.go

@@ -5,6 +5,7 @@ import (
 	"s1d3sw1ped/SteamCache2/vfs"
 	"s1d3sw1ped/SteamCache2/vfs/vfserror"
 	"sync"
+	"time"
 )
 
 // Ensure GCFS implements VFS.
@@ -19,6 +20,7 @@ type GCFS struct {
 	gcHanderFunc                 GCHandlerFunc
 	lifetimeBytes, lifetimeFiles uint
 	reclaimedBytes, deletedFiles uint
+	gcTime                       time.Duration
 	mu                           sync.Mutex
 }
 
@@ -38,9 +40,10 @@ func New(vfs vfs.VFS, multiplier int, gcHandlerFunc GCHandlerFunc) *GCFS {
 
 // Stats returns the lifetime bytes, lifetime files, reclaimed bytes and deleted files.
 // The lifetime bytes and lifetime files are the total bytes and files that have been freed up by the GC handler.
-// The reclaimed bytes and deleted files are the bytes and files that have been freed up by the GC handler since the last execution.
-// The reclaimed bytes and deleted files are reset to 0 after the call to Stats.
-func (g *GCFS) Stats() (lifetimeBytes, lifetimeFiles, reclaimedBytes, deletedFiles uint) {
+// The reclaimed bytes and deleted files are the bytes and files that have been freed up by the GC handler since last call to Stats.
+// The gc time is the total time spent in the GC handler since last call to Stats.
+// The reclaimed bytes and deleted files and gc time are reset to 0 after the call to Stats.
+func (g *GCFS) Stats() (lifetimeBytes, lifetimeFiles, reclaimedBytes, deletedFiles uint, gcTime time.Duration) {
 	g.mu.Lock()
 	defer g.mu.Unlock()
 
@@ -51,9 +54,11 @@ func (g *GCFS) Stats() (lifetimeBytes, lifetimeFiles, reclaimedBytes, deletedFil
 	lifetimeFiles = g.lifetimeFiles
 	reclaimedBytes = g.reclaimedBytes
 	deletedFiles = g.deletedFiles
+	gcTime = g.gcTime
 
 	g.reclaimedBytes = 0
 	g.deletedFiles = 0
+	g.gcTime = time.Duration(0)
 
 	return
 }
@@ -65,7 +70,9 @@ func (g *GCFS) Set(key string, src []byte) error {
 	err := g.VFS.Set(key, src) // try to set the key and src
 
 	if err == vfserror.ErrDiskFull && g.gcHanderFunc != nil { // if the error is disk full and there is a GC handler
+		tstart := time.Now()
 		reclaimedBytes, deletedFiles := g.gcHanderFunc(g.VFS, uint(len(src)*g.multiplier)) // call the GC handler
+		g.gcTime += time.Since(tstart)
 		g.reclaimedBytes += reclaimedBytes
 		g.deletedFiles += deletedFiles
 		err = g.VFS.Set(key, src) // try again after GC if it still fails return the error