Function formatEvent

scripts/thread-stalker.js:332–369

(state, ev)

// returns formatted string, or null if it should be dropped by scope
function formatEvent(state, ev) {
  const type = ev[0];
  switch (type) {
    case "call": {
      const from = np(ev[1]), to = np(ev[2]), depth = ev[3];
      const r = resolve(to);
      if (!inScope(state, r.lib)) return null;
      return `${C.cyan}CALL${C.reset} ${sym(from)} -> ${r.text} ${C.dim}depth=${depth}${C.reset}`;
    }
    case "ret": {
      const from = np(ev[1]), to = np(ev[2]);
      const r = resolve(from);
      if (!inScope(state, r.lib)) return null;
      return `${C.dim}RET ${C.reset} ${r.text} -> ${sym(to)}`;
    }
    case "block": {
      const start = np(ev[1]), end = np(ev[2]);
      const r = resolve(start);
      if (!inScope(state, r.lib)) return null;
      const size = end && start ? parseInt(end.sub(start).toString(), 16) : 0;
      return `${C.yellow}BLOCK${C.reset} ${r.text} ${C.dim}(${size}B)${C.reset}`;
    }
    case "compile": {
      const start = np(ev[1]);
      const r = resolve(start);
      if (!inScope(state, r.lib)) return null;
      return `${C.dim}COMPILE${C.reset} ${r.text}`;
    }
    case "exec": {
      const pc = np(ev[1]);
      const r = resolve(pc);
      if (!inScope(state, r.lib)) return null;
      return `EXEC ${r.text}`;
    }
    default:
      return null;
  }
}

function stopStalk(tid, reason) {
  const state = stalked.get(tid);