debug

analysis/perf_analyzer.go

@@ -34,6 +34,7 @@ type PerfAnalyzer struct {
  period sim.VTimeInSec
  engine sim.Engine
  backend PerfAnalyzerBackend
+ backendFlag bool
  portDataTable map[string]PerfAnalyzerEntry
 
  mu sync.Mutex
@@ -119,7 +120,9 @@ func (b *PerfAnalyzer) RegisterPort(port sim.Port) {
 // AddDataEntry adds a data entry to the database. It directly writes into the
 // CSV file.
 func (b *PerfAnalyzer) AddDataEntry(entry PerfAnalyzerEntry) {
- b.backend.AddDataEntry(entry)
+ if b.backendFlag {
+ b.backend.AddDataEntry(entry)
+ }
 
  b.mu.Lock()
  key := entry.Where + entry.What + entry.EntryType + entry.Unit
@@ -179,19 +182,26 @@ func (b PerfAnalyzerBuilder) WithEngine(
 // Build creates a PerfAnalyzer.
 func (b PerfAnalyzerBuilder) Build() *PerfAnalyzer {
  var backend PerfAnalyzerBackend
- if b.backendType == "csv" {
- backend = NewCSVPerfAnalyzerBackend(b.dbFilename)
- } else if b.backendType == "sqlite" {
- backend = NewSQLitePerfAnalyzerBackend(b.dbFilename)
+ var backendFlag bool
+ if b.dbFilename != "" {
+ backendFlag = true
+ if b.backendType == "csv" {
+ backend = NewCSVPerfAnalyzerBackend(b.dbFilename)
+ } else if b.backendType == "sqlite" {
+ backend = NewSQLitePerfAnalyzerBackend(b.dbFilename)
+ } else {
+ panic("Unknown backend type")
+ }
  } else {
- panic("Unknown backend type")
+ backendFlag = false
  }
 
  return &PerfAnalyzer{
  period: b.period,
  backend: backend,
  engine: b.engine,
  usePeriod: b.usePeriod,
+ backendFlag: backendFlag,
  portDataTable: make(map[string]PerfAnalyzerEntry),
  }
 }

analysis/perf_analyzer_backend.go

@@ -28,6 +28,10 @@ type CSVBackend struct {
 
 // NewCSVPerfAnalyzerBackend creates a new CSVPerfAnalyzerBackend.
 func NewCSVPerfAnalyzerBackend(dbFilename string) *CSVBackend {
+ if dbFilename == "" {
+ return nil
+ }
+
  p := &CSVBackend{}
 
  var err error