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|
// +build debug OR debug0
package pdebug
import (
"bytes"
"fmt"
"strings"
"time"
"github.com/davecgh/go-spew/spew"
)
const Enabled = true
type Guard interface {
End()
}
var emptyGuard = &guard{}
func (ctx *pdctx) Unindent() {
ctx.mutex.Lock()
defer ctx.mutex.Unlock()
ctx.indentL--
}
func (ctx *pdctx) Indent() guard {
ctx.mutex.Lock()
ctx.indentL++
ctx.mutex.Unlock()
return guard{cb: ctx.Unindent}
}
func (ctx *pdctx) preamble(buf *bytes.Buffer) {
if p := ctx.Prefix; len(p) > 0 {
buf.WriteString(p)
}
if ctx.LogTime {
fmt.Fprintf(buf, "%0.5f ", float64(time.Now().UnixNano()) / 1000000.0)
}
for i := 0; i < ctx.indentL; i++ {
buf.WriteString(" ")
}
}
func (ctx *pdctx) Printf(f string, args ...interface{}) {
if !strings.HasSuffix(f, "\n") {
f = f + "\n"
}
buf := bytes.Buffer{}
ctx.preamble(&buf)
fmt.Fprintf(&buf, f, args...)
buf.WriteTo(ctx.Writer)
}
func Marker(f string, args ...interface{}) *markerg {
return DefaultCtx.Marker(f, args...)
}
func (ctx *pdctx) Marker(f string, args ...interface{}) *markerg {
if !Trace {
return emptyMarkerGuard
}
buf := &bytes.Buffer{}
ctx.preamble(buf)
buf.WriteString("START ")
fmt.Fprintf(buf, f, args...)
if buf.Len() > 0 {
if b := buf.Bytes(); b[buf.Len()-1] != '\n' {
buf.WriteRune('\n')
}
}
buf.WriteTo(ctx.Writer)
g := ctx.Indent()
return &markerg{
indentg: g,
ctx: ctx,
f: f,
args: args,
start: time.Now(),
errptr: nil,
}
}
func (g *markerg) BindError(errptr *error) *markerg {
if g.ctx == nil {
return g
}
g.ctx.mutex.Lock()
defer g.ctx.mutex.Unlock()
g.errptr = errptr
return g
}
func (g *markerg) End() {
if g.ctx == nil {
return
}
g.indentg.End() // unindent
buf := &bytes.Buffer{}
g.ctx.preamble(buf)
fmt.Fprint(buf, "END ")
fmt.Fprintf(buf, g.f, g.args...)
fmt.Fprintf(buf, " (%s)", time.Since(g.start))
if errptr := g.errptr; errptr != nil && *errptr != nil {
fmt.Fprintf(buf, ": ERROR: %s", *errptr)
}
if buf.Len() > 0 {
if b := buf.Bytes(); b[buf.Len()-1] != '\n' {
buf.WriteRune('\n')
}
}
buf.WriteTo(g.ctx.Writer)
}
type legacyg struct {
guard
start time.Time
}
var emptylegacyg = legacyg{}
func (g legacyg) IRelease(f string, args ...interface{}) {
if !Trace {
return
}
g.End()
dur := time.Since(g.start)
Printf("%s (%s)", fmt.Sprintf(f, args...), dur)
}
// IPrintf indents and then prints debug messages. Execute the callback
// to undo the indent
func IPrintf(f string, args ...interface{}) legacyg {
if !Trace {
return emptylegacyg
}
DefaultCtx.Printf(f, args...)
g := legacyg{
guard: DefaultCtx.Indent(),
start: time.Now(),
}
return g
}
// Printf prints debug messages. Only available if compiled with "debug" tag
func Printf(f string, args ...interface{}) {
if !Trace {
return
}
DefaultCtx.Printf(f, args...)
}
func Dump(v ...interface{}) {
if !Trace {
return
}
spew.Dump(v...)
}
|
