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command/terminal: Printing stack trace of all the goroutines (#1212)

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Add -t falg to "goroutines" command. For example, "goroutines -t" will
print all the goroutines along with the stack trace.
This commit is contained in:
Chandrashekhara A
2018-05-22 23:32:43 +05:30
committed by Derek Parker
parent d2c48bac35
commit 3c794eb306
2 changed files with 28 additions and 14 deletions
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3
Documentation/cli/README.md
View File

@ -199,13 +199,14 @@ Called with more arguments it will execute a command on the specified goroutine.
## goroutines
List program goroutines.
goroutines [-u (default: user location)|-r (runtime location)|-g (go statement location)]
goroutines [-u (default: user location)|-r (runtime location)|-g (go statement location) ] [ -t (stack trace)]
Print out info for every goroutine. The flag controls what information is shown along with each goroutine:
-u displays location of topmost stackframe in user code
-r displays location of topmost stackframe (including frames inside private runtime functions)
-g displays location of go instruction that created the goroutine
-t displays stack trace of goroutine
If no flag is specified the default is -u.

39
pkg/terminal/command.go
View File

@ -142,13 +142,14 @@ See also: "help on", "help cond" and "help clear"`},
If called with the linespec argument it will delete all the breakpoints matching the linespec. If linespec is omitted all breakpoints are deleted.`},
{aliases: []string{"goroutines"}, cmdFn: goroutines, helpMsg: `List program goroutines.
goroutines [-u (default: user location)|-r (runtime location)|-g (go statement location)]
goroutines [-u (default: user location)|-r (runtime location)|-g (go statement location) ] [ -t (stack trace)]
Print out info for every goroutine. The flag controls what information is shown along with each goroutine:
-u displays location of topmost stackframe in user code
-r displays location of topmost stackframe (including frames inside private runtime functions)
-g displays location of go instruction that created the goroutine
-t displays stack trace of goroutine
If no flag is specified the default is -u.`},
{aliases: []string{"goroutine"}, allowedPrefixes: onPrefix, cmdFn: c.goroutine, helpMsg: `Shows or changes current goroutine
@ -525,22 +526,27 @@ func (a byGoroutineID) Less(i, j int) bool { return a[i].ID < a[j].ID }
func goroutines(t *Term, ctx callContext, argstr string) error {
args := strings.Split(argstr, " ")
var fgl = fglUserCurrent
bPrintStack := false
switch len(args) {
case 0:
// nothing to do
case 1:
switch args[0] {
case "-u":
fgl = fglUserCurrent
case "-r":
fgl = fglRuntimeCurrent
case "-g":
fgl = fglGo
case "":
// nothing to do
default:
return fmt.Errorf("wrong argument: '%s'", args[0])
case 1, 2:
for _, arg := range args {
switch arg {
case "-u":
fgl = fglUserCurrent
case "-r":
fgl = fglRuntimeCurrent
case "-g":
fgl = fglGo
case "-t":
bPrintStack = true
case "":
// nothing to do
default:
return fmt.Errorf("wrong argument: '%s'", arg)
}
}
default:
return fmt.Errorf("too many arguments")
@ -561,6 +567,13 @@ func goroutines(t *Term, ctx callContext, argstr string) error {
prefix = "* "
}
fmt.Printf("%sGoroutine %s\n", prefix, formatGoroutine(g, fgl))
if bPrintStack {
stack, err := t.client.Stacktrace(g.ID, 10, nil)
if err != nil {
return err
}
printStack(stack, "\t", false)
}
}
return nil
}