Add --path to bolt bench.

cmd/bolt/bench.go

@@ -31,8 +31,11 @@ func Bench(options *BenchOptions) {
 		fatal("number of iterations must be divisible by the batch size")
 	}
 
-	// Find temporary location.
+	// Generate temp path if one is not passed in.
-	path := tempfile()
+	path := options.Path
+	if path == "" {
+		path = tempfile()
+	}
 
 	if options.Clean {
 		defer os.Remove(path)
@@ -368,6 +371,7 @@ type BenchOptions struct {
 	FillPercent   float64
 	NoSync        bool
 	Clean         bool
+	Path          string
 }
 
 // BenchResults represents the performance results of the benchmark.

cmd/bolt/main.go

@@ -99,6 +99,7 @@ func NewApp() *cli.App {
 				&cli.Float64Flag{Name: "fill-percent", Value: bolt.DefaultFillPercent, Usage: "Fill percentage"},
 				&cli.BoolFlag{Name: "no-sync", Usage: "Skip fsync on every commit"},
 				&cli.BoolFlag{Name: "work", Usage: "Print the temp db and do not delete on exit"},
+				&cli.StringFlag{Name: "path", Usage: "Path to database to use"},
 			},
 			Action: func(c *cli.Context) {
 				statsInterval, err := time.ParseDuration(c.String("stats-interval"))
@@ -121,6 +122,7 @@ func NewApp() *cli.App {
 					FillPercent:   c.Float64("fill-percent"),
 					NoSync:        c.Bool("no-sync"),
 					Clean:         !c.Bool("work"),
+					Path:          c.String("path"),
 				})
 			},
 		}}