diff options
Diffstat (limited to 'debugon.go')
| -rw-r--r-- | debugon.go | 12 |
1 files changed, 8 insertions, 4 deletions
@@ -10,9 +10,9 @@ import ( "time" ) -var parsers []*DebugParser +var parsers []*debugParser -type DebugParser struct { +type debugParser struct { Description string Caller string Next Parser @@ -20,7 +20,7 @@ type DebugParser struct { Calls int } -func (dp *DebugParser) Parse(ps *State) Node { +func (dp *debugParser) Parse(ps *State) Result { start := time.Now() ret := dp.Next(ps) @@ -42,6 +42,9 @@ func getPackageName(f *runtime.Func) string { } } +// NewParser should be called around the creation of every Parser. +// It does nothing normally and should incur no runtime overhead, but when building with -tags debug +// it will instrument every parser to collect valuable timing information displayable with DumpDebugStats. func NewParser(description string, p Parser) Parser { fpcs := make([]uintptr, 1) caller := "" @@ -61,7 +64,7 @@ func NewParser(description string, p Parser) Parser { } } - dp := &DebugParser{ + dp := &debugParser{ Description: description, Next: p, Caller: caller, @@ -71,6 +74,7 @@ func NewParser(description string, p Parser) Parser { return dp.Parse } +// DumpDebugStats will print out the curring timings for each parser if built with -tags debug func DumpDebugStats() { sort.Slice(parsers, func(i, j int) bool { return parsers[i].Time >= parsers[j].Time |