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diff --git a/src/msg/async/PosixStack.h b/src/msg/async/PosixStack.h
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+++ b/src/msg/async/PosixStack.h
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+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- 
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2016 XSKY <haomai@xsky.com>
+ *
+ * Author: Haomai Wang <haomaiwang@gmail.com>
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation.  See file COPYING.
+ *
+ */
+
+#ifndef CEPH_MSG_ASYNC_POSIXSTACK_H
+#define CEPH_MSG_ASYNC_POSIXSTACK_H
+
+#include <thread>
+
+#include "msg/msg_types.h"
+#include "msg/async/net_handler.h"
+
+#include "Stack.h"
+
+class PosixWorker : public Worker {
+  NetHandler net;
+  void initialize() override;
+ public:
+  PosixWorker(CephContext *c, unsigned i)
+      : Worker(c, i), net(c) {}
+  int listen(entity_addr_t &sa,
+	     unsigned addr_slot,
+	     const SocketOptions &opt,
+	     ServerSocket *socks) override;
+  int connect(const entity_addr_t &addr, const SocketOptions &opts, ConnectedSocket *socket) override;
+};
+
+class PosixNetworkStack : public NetworkStack {
+  vector<std::thread> threads;
+
+ public:
+  explicit PosixNetworkStack(CephContext *c, const string &t);
+
+  void spawn_worker(unsigned i, std::function<void ()> &&func) override {
+    threads.resize(i+1);
+    threads[i] = std::thread(func);
+  }
+  void join_worker(unsigned i) override {
+    ceph_assert(threads.size() > i && threads[i].joinable());
+    threads[i].join();
+  }
+};
+
+#endif //CEPH_MSG_ASYNC_POSIXSTACK_H