Method finalize

src/linux/perf.cpp:113–123

  }

  void finalize() override
  {
    // Kill the perf process (if it's still running) by sending
    // SIGTERM to the signal handler which will then SIGKILL the
    // perf process group created by the supervisor process.
    if (perf.isSome() && perf->status().isPending()) {
      kill(perf->pid(), SIGTERM);
    }

    promise.discard();
  }

private:
  void execute()