// annotateAssembly annotates a set of assembly instructions with a
// set of samples. It returns a set of nodes to display. base is an
// offset to adjust the sample addresses.
func annotateAssembly(insns []plugin.Inst, samples graph.Nodes, base uint64) graph.Nodes {
// Add end marker to simplify printing loop.
insns = append(insns, plugin.Inst{^uint64(0), "", "", 0})
// Ensure samples are sorted by address.
samples.Sort(graph.AddressOrder)
var s int
var asm graph.Nodes
for ix, in := range insns[:len(insns)-1] {
n := graph.Node{
Info: graph.NodeInfo{
Address: in.Addr,
Name: in.Text,
File: trimPath(in.File),
Lineno: in.Line,
},
}
// Sum all the samples until the next instruction (to account
// for samples attributed to the middle of an instruction).
for next := insns[ix+1].Addr; s < len(samples) && samples[s].Info.Address-base < next; s++ {
n.Flat += samples[s].Flat
n.Cum += samples[s].Cum
if samples[s].Info.File != "" {
n.Info.File = trimPath(samples[s].Info.File)
n.Info.Lineno = samples[s].Info.Lineno
}
}
asm = append(asm, &n)
}
return asm
}
// printSource prints an annotated source listing, include all
// functions with samples that match the regexp rpt.options.symbol.
// The sources are sorted by function name and then by filename to
// eliminate potential nondeterminism.
func printSource(w io.Writer, rpt *Report) error {
o := rpt.options
g := rpt.newGraph(nil)
// Identify all the functions that match the regexp provided.
// Group nodes for each matching function.
var functions graph.Nodes
functionNodes := make(map[string]graph.Nodes)
for _, n := range g.Nodes {
if !o.Symbol.MatchString(n.Info.Name) {
continue
}
if functionNodes[n.Info.Name] == nil {
functions = append(functions, n)
}
functionNodes[n.Info.Name] = append(functionNodes[n.Info.Name], n)
}
functions.Sort(graph.NameOrder)
sourcePath := o.SourcePath
if sourcePath == "" {
wd, err := os.Getwd()
if err != nil {
return fmt.Errorf("Could not stat current dir: %v", err)
}
sourcePath = wd
}
fmt.Fprintf(w, "Total: %s\n", rpt.formatValue(rpt.total))
for _, fn := range functions {
name := fn.Info.Name
// Identify all the source files associated to this function.
// Group nodes for each source file.
var sourceFiles graph.Nodes
fileNodes := make(map[string]graph.Nodes)
for _, n := range functionNodes[name] {
if n.Info.File == "" {
continue
}
if fileNodes[n.Info.File] == nil {
sourceFiles = append(sourceFiles, n)
}
fileNodes[n.Info.File] = append(fileNodes[n.Info.File], n)
}
if len(sourceFiles) == 0 {
fmt.Fprintf(w, "No source information for %s\n", name)
continue
}
sourceFiles.Sort(graph.FileOrder)
// Print each file associated with this function.
for _, fl := range sourceFiles {
filename := fl.Info.File
fns := fileNodes[filename]
flatSum, cumSum := fns.Sum()
fnodes, _, err := getSourceFromFile(filename, sourcePath, fns, 0, 0)
fmt.Fprintf(w, "ROUTINE ======================== %s in %s\n", name, filename)
fmt.Fprintf(w, "%10s %10s (flat, cum) %s of Total\n",
rpt.formatValue(flatSum), rpt.formatValue(cumSum),
percentage(cumSum, rpt.total))
if err != nil {
fmt.Fprintf(w, " Error: %v\n", err)
continue
}
for _, fn := range fnodes {
fmt.Fprintf(w, "%10s %10s %6d:%s\n", valueOrDot(fn.Flat, rpt), valueOrDot(fn.Cum, rpt), fn.Info.Lineno, fn.Info.Name)
}
}
}
return nil
}
// printWebSource prints an annotated source listing, include all
// functions with samples that match the regexp rpt.options.symbol.
func printWebSource(w io.Writer, rpt *Report, obj plugin.ObjTool) error {
o := rpt.options
g := rpt.newGraph(nil)
// If the regexp source can be parsed as an address, also match
// functions that land on that address.
var address *uint64
if hex, err := strconv.ParseUint(o.Symbol.String(), 0, 64); err == nil {
address = &hex
}
// Extract interesting symbols from binary files in the profile and
// classify samples per symbol.
symbols := symbolsFromBinaries(rpt.prof, g, o.Symbol, address, obj)
symNodes := nodesPerSymbol(g.Nodes, symbols)
// Sort symbols for printing.
var syms objSymbols
for s := range symNodes {
syms = append(syms, s)
}
sort.Sort(syms)
if len(syms) == 0 {
return fmt.Errorf("no samples found on routines matching: %s", o.Symbol.String())
}
printHeader(w, rpt)
for _, s := range syms {
name := s.sym.Name[0]
// Identify sources associated to a symbol by examining
// symbol samples. Classify samples per source file.
var sourceFiles graph.Nodes
fileNodes := make(map[string]graph.Nodes)
for _, n := range symNodes[s] {
if n.Info.File == "" {
continue
}
if fileNodes[n.Info.File] == nil {
sourceFiles = append(sourceFiles, n)
}
fileNodes[n.Info.File] = append(fileNodes[n.Info.File], n)
}
if len(sourceFiles) == 0 {
fmt.Fprintf(w, "No source information for %s\n", name)
continue
}
sourceFiles.Sort(graph.FileOrder)
// Print each file associated with this function.
for _, fl := range sourceFiles {
filename := fl.Info.File
fns := fileNodes[filename]
asm := assemblyPerSourceLine(symbols, fns, filename, obj)
start, end := sourceCoordinates(asm)
fnodes, path, err := getFunctionSource(name, filename, fns, start, end)
if err != nil {
fnodes, path = getMissingFunctionSource(filename, asm, start, end)
}
flatSum, cumSum := fnodes.Sum()
printFunctionHeader(w, name, path, flatSum, cumSum, rpt)
for _, fn := range fnodes {
printFunctionSourceLine(w, fn, asm[fn.Info.Lineno], rpt)
}
printFunctionClosing(w)
}
}
printPageClosing(w)
return nil
}
