v class="line"><a name="l00424"></a><span class="lineno">  424</span>&#160;  std::atomic_bool m_cancel;</div><div class="line"><a name="l00425"></a><span class="lineno">  425</span>&#160;</div><div class="line"><a name="l00429"></a><span class="lineno">  429</span>&#160;  std::map&lt;std::string, callback_holder&gt; m_subscribed_channels;</div><div class="line"><a name="l00433"></a><span class="lineno">  433</span>&#160;  std::map&lt;std::string, callback_holder&gt; m_psubscribed_channels;</div><div class="