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Print stacktrace in SIGINT handler if RESTIC_DEBUG_STACKTRACE_SIGINT set

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The builtin mechanism to capture a stacktrace in Go is to send a SIGQUIT
to the running process. However, this mechanism is not avaiable on
Windows. Thus, tweak the SIGINT handler to dump a stacktrace if the
environment variable `RESTIC_DEBUG_STACKTRACE_SIGINT` is set.
This commit is contained in:
Michael Eischer
2023-04-23 14:56:36 +02:00
parent 41cc320145
commit 306a29980a
3 changed files with 31 additions and 0 deletions
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6
cmd/restic/cleanup.go
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@@ -62,6 +62,12 @@ func CleanupHandler(c <-chan os.Signal) {
debug.Log("signal %v received, cleaning up", s)
Warnf("%ssignal %v received, cleaning up\n", clearLine(0), s)
if val, _ := os.LookupEnv("RESTIC_DEBUG_STACKTRACE_SIGINT"); val != "" {
_, _ = os.Stderr.WriteString("\n--- STACKTRACE START ---\n\n")
_, _ = os.Stderr.WriteString(debug.DumpStacktrace())
_, _ = os.Stderr.WriteString("\n--- STACKTRACE END ---\n")
}
code := 0
if s == syscall.SIGINT {