cmd/vendor/github.com/google/pprof: refresh from upstream

Updating to commit fffc5831a499a958516664a34cb7ba2b9e228793
from github.com/google/pprof

Fixes #19380

Change-Id: I7a0c64101f42b494c4a469c41628374272eccf95
Reviewed-on: https://go-review.googlesource.com/46155
Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

1 files changed, 6 insertions, 6 deletions

diff --git a/src/cmd/vendor/github.com/google/pprof/internal/graph/dotgraph.go b/src/cmd/vendor/github.com/google/pprof/internal/graph/dotgraph.go
index c99e8992de..514156a184 100644
--- a/src/cmd/vendor/github.com/google/pprof/internal/graph/dotgraph.go
+++ b/src/cmd/vendor/github.com/google/pprof/internal/graph/dotgraph.go
@@ -50,7 +50,9 @@ type DotConfig struct {
 	Total       int64                      // The total weight of the graph, used to compute percentages
 }
 
-// Compose creates and writes a in the DOT format to the writer, using
+const maxNodelets = 4 // Number of nodelets for labels (both numeric and non)
+
+// ComposeDot creates and writes a in the DOT format to the writer, using
 // the configurations given.
 func ComposeDot(w io.Writer, g *Graph, a *DotAttributes, c *DotConfig) {
 	builder := &builder{w, a, c}
@@ -204,13 +206,11 @@ func (b *builder) addNode(node *Node, nodeID int, maxFlat float64) {
 
 // addNodelets generates the DOT boxes for the node tags if they exist.
 func (b *builder) addNodelets(node *Node, nodeID int) bool {
-	const maxNodelets = 4    // Number of nodelets for alphanumeric labels
-	const maxNumNodelets = 4 // Number of nodelets for numeric labels
 	var nodelets string
 
 	// Populate two Tag slices, one for LabelTags and one for NumericTags.
 	var ts []*Tag
-	lnts := make(map[string][]*Tag, 0)
+	lnts := make(map[string][]*Tag)
 	for _, t := range node.LabelTags {
 		ts = append(ts, t)
 	}
@@ -242,12 +242,12 @@ func (b *builder) addNodelets(node *Node, nodeID int) bool {
 		nodelets += fmt.Sprintf(`N%d_%d [label = "%s" fontsize=8 shape=box3d tooltip="%s"]`+"\n", nodeID, i, t.Name, weight)
 		nodelets += fmt.Sprintf(`N%d -> N%d_%d [label=" %s" weight=100 tooltip="%s" labeltooltip="%s"]`+"\n", nodeID, nodeID, i, weight, weight, weight)
 		if nts := lnts[t.Name]; nts != nil {
-			nodelets += b.numericNodelets(nts, maxNumNodelets, flatTags, fmt.Sprintf(`N%d_%d`, nodeID, i))
+			nodelets += b.numericNodelets(nts, maxNodelets, flatTags, fmt.Sprintf(`N%d_%d`, nodeID, i))
 		}
 	}
 
 	if nts := lnts[""]; nts != nil {
-		nodelets += b.numericNodelets(nts, maxNumNodelets, flatTags, fmt.Sprintf(`N%d`, nodeID))
+		nodelets += b.numericNodelets(nts, maxNodelets, flatTags, fmt.Sprintf(`N%d`, nodeID))
 	}
 
 	fmt.Fprint(b, nodelets)