viewer.go

     1  // Copyright 2023 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package main
     6  
     7  import (
     8  	"fmt"
     9  	"internal/trace"
    10  	"internal/trace/traceviewer"
    11  	"slices"
    12  	"time"
    13  )
    14  
    15  // viewerFrames returns the frames of the stack of ev. The given frame slice is
    16  // used to store the frames to reduce allocations.
    17  func viewerFrames(stk trace.Stack) []trace.StackFrame {
    18  	return slices.Collect(stk.Frames())
    19  }
    20  
    21  func viewerGState(state trace.GoState, inMarkAssist bool) traceviewer.GState {
    22  	switch state {
    23  	case trace.GoUndetermined:
    24  		return traceviewer.GDead
    25  	case trace.GoNotExist:
    26  		return traceviewer.GDead
    27  	case trace.GoRunnable:
    28  		return traceviewer.GRunnable
    29  	case trace.GoRunning:
    30  		return traceviewer.GRunning
    31  	case trace.GoWaiting:
    32  		if inMarkAssist {
    33  			return traceviewer.GWaitingGC
    34  		}
    35  		return traceviewer.GWaiting
    36  	case trace.GoSyscall:
    37  		// N.B. A goroutine in a syscall is considered "executing" (state.Executing() == true).
    38  		return traceviewer.GRunning
    39  	default:
    40  		panic(fmt.Sprintf("unknown GoState: %s", state.String()))
    41  	}
    42  }
    43  
    44  func viewerTime(t time.Duration) float64 {
    45  	return float64(t) / float64(time.Microsecond)
    46  }
    47
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