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  )
    13  
    14  // viewerFrames returns the frames of the stack of ev. The given frame slice is
    15  // used to store the frames to reduce allocations.
    16  func viewerFrames(stk trace.Stack) []trace.StackFrame {
    17  	return slices.Collect(stk.Frames())
    18  }
    19  
    20  func viewerGState(state trace.GoState, inMarkAssist bool) traceviewer.GState {
    21  	switch state {
    22  	case trace.GoUndetermined:
    23  		return traceviewer.GDead
    24  	case trace.GoNotExist:
    25  		return traceviewer.GDead
    26  	case trace.GoRunnable:
    27  		return traceviewer.GRunnable
    28  	case trace.GoRunning:
    29  		return traceviewer.GRunning
    30  	case trace.GoWaiting:
    31  		if inMarkAssist {
    32  			return traceviewer.GWaitingGC
    33  		}
    34  		return traceviewer.GWaiting
    35  	case trace.GoSyscall:
    36  		// N.B. A goroutine in a syscall is considered "executing" (state.Executing() == true).
    37  		return traceviewer.GRunning
    38  	default:
    39  		panic(fmt.Sprintf("unknown GoState: %s", state.String()))
    40  	}
    41  }
    42
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