Function build_rthdr

g2all/700/lapse.js:487–497

(buf, size)

}

function build_rthdr(buf, size) {
  const len = ((size >> 3) - 1) & ~1;
  size = (len + 1) << 3;

  buf[0] = 0;
  buf[1] = len;
  buf[2] = 0;
  buf[3] = len >> 1;

  return size;
}

function spawn_thread(thread) {
  const ctx = new Buffer(context_size);