/home/mhx/git/github/libmoost/include/moost/process/daemon.hpp

Go to the documentation of this file.

/* vim:set ts=3 sw=3 sts=3 et: */
#ifndef MOOST_PROCESS_DAEMON_HPP__
#define MOOST_PROCESS_DAEMON_HPP__

#include <boost/function.hpp>
#include <boost/thread.hpp>

#include "detail/daemon_linux.hpp"

namespace moost { namespace process {

class daemon
{
private:
   struct default_child_init_func
   {
      bool operator()() { return false; }
   };

public:
   daemon(bool exit_parent, boost::function0<bool> child_init_func)
   {
      init(exit_parent, child_init_func);
   }

   daemon(bool exit_parent)
   {
      init(exit_parent, default_child_init_func());
   }

   daemon(boost::function0<bool> child_init_func)
   {
      init(true, child_init_func);
   }

   pid_t get_pid() const { return daemon_impl_.get_pid_(); }

   bool is_child() const { return 0 == get_pid(); }

   bool is_parent() const { return !is_child(); }

   static void sleep_forever()
   {
      for(;;)
      {
         // Never again shall this thread awaken from a deep slumber :)
         boost::this_thread::sleep(
            boost::posix_time::time_duration(boost::posix_time::pos_infin)
            );
      }
   }

private:
   void init(bool exit_parent, boost::function0<bool> child_init_func)
   {
      daemon_impl_.fork_(child_init_func);

      if(exit_parent && is_parent())
      {
         exit(EXIT_SUCCESS);
      }
   }

private:
   daemon_impl daemon_impl_;
};

}}


#endif // MOOST_PROCESS_DAEMON_HPP__