4 // Fraunhofer Institut fuer offene Kommunikationssysteme (FOKUS)
5 // Kompetenzzentrum fuer Satelitenkommunikation (SatCom)
6 // Stefan Bund <stefan.bund@fokus.fraunhofer.de>
8 // This program is free software; you can redistribute it and/or modify
9 // it under the terms of the GNU General Public License as published by
10 // the Free Software Foundation; either version 2 of the License, or
11 // (at your option) any later version.
13 // This program is distributed in the hope that it will be useful,
14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 // GNU General Public License for more details.
18 // You should have received a copy of the GNU General Public License
19 // along with this program; if not, write to the
20 // Free Software Foundation, Inc.,
21 // 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
24 #define HH_Scheduler_ 1
29 #include <boost/function.hpp>
30 #include <boost/utility.hpp>
31 #include <boost/call_traits.hpp>
33 #include "Utils/MicroTime.hh"
35 //#include "scheduler.mpp"
36 ///////////////////////////////hh.p////////////////////////////////////////
41 /** \brief Singleton class to manage the event loop
43 This class manages a single select() type event loop. A
44 customer of this class may register any number of file
45 descriptiors with this class and pass callback functions to be
46 called on input, output or error. This functions are specified
47 using boost::function objects
53 ///////////////////////////////////////////////////////////////////////////
56 enum EventId { EV_NONE=0,
57 EV_READ=1, EV_PRIO=2, EV_WRITE=4, EV_HUP=8, EV_ERR=16,
60 template <class Handle>
61 struct GenericCallback {
62 typedef boost::function<void (typename boost::call_traits<Handle>::param_type,
65 typedef boost::function<void (EventId)> SimpleCallback;
66 typedef boost::function<void ()> TimerCallback;
68 ///////////////////////////////////////////////////////////////////////////
69 ///\name Structors and default members
72 // private default constructor
73 // no copy constructor
76 // no conversion constructors
78 static Scheduler & instance();
81 ///////////////////////////////////////////////////////////////////////////
83 template <class Handle>
84 void add(Handle const & handle,
85 typename GenericCallback<Handle>::Callback const & cb,
86 EventId eventMask = EV_ALL);
87 template <class Handle>
88 void remove(Handle const & handle, EventId eventMask = EV_ALL);
90 void timeout(unsigned long timeout, TimerCallback const & cb);
100 void do_add(int fd, SimpleCallback const & cb, EventId eventMask = EV_ALL);
101 void do_remove(int fd, EventId eventMask = EV_ALL);
105 SimpleCallback cb_read;
106 SimpleCallback cb_prio;
107 SimpleCallback cb_write;
108 SimpleCallback cb_hup;
109 SimpleCallback cb_err;
111 int epollMask() const;
116 TimerSpec() : timeout(), cb() {}
117 TimerSpec(unsigned long long timeout_, TimerCallback cb_)
118 : timeout(timeout_), cb(cb_) {}
120 bool operator< (TimerSpec const & other) const
121 { return timeout > other.timeout; }
123 unsigned long long timeout;
127 typedef std::map<int,EventSpec> FdTable;
128 typedef std::priority_queue<TimerSpec> TimerQueue;
131 TimerQueue timerQueue_;
136 int retrieve_filehandle(int fd);
140 ///////////////////////////////hh.e////////////////////////////////////////
141 #include "Scheduler.cci"
142 #include "Scheduler.ct"
143 #include "Scheduler.cti"
149 // c-file-style: "satcom"