2 * Copyright (C) 2011, BMW AG
4 * GeniviAudioMananger AudioManagerDaemon
6 * \file SocketHandler.h
8 * \date 20-Oct-2011 3:42:04 PM
9 * \author Christian Mueller (christian.ei.mueller@bmw.de)
12 * GNU Lesser General Public License, version 2.1, with special exception (GENIVI clause)
13 * Copyright (C) 2011, BMW AG Christian Mueller Christian.ei.mueller@bmw.de
15 * This program 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.
16 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License, version 2.1, for more details.
17 * You should have received a copy of the GNU Lesser General Public License, version 2.1, along with this program; if not, see <http://www.gnu.org/licenses/lgpl-2.1.html>.
18 * Note that the copyright holders assume that the GNU Lesser General Public License, version 2.1, may also be applicable to programs even in cases in which the program is not a library in the technical sense.
19 * Linking AudioManager statically or dynamically with other modules is making a combined work based on AudioManager. You may license such other modules under the GNU Lesser General Public License, version 2.1. If you do not want to license your linked modules under the GNU Lesser General Public License, version 2.1, you may use the program under the following exception.
20 * As a special exception, the copyright holders of AudioManager give you permission to combine AudioManager with software programs or libraries that are released under any license unless such a combination is not permitted by the license of such a software program or library. You may copy and distribute such a system following the terms of the GNU Lesser General Public License, version 2.1, including this special exception, for AudioManager and the licenses of the other code concerned.
21 * Note that people who make modified versions of AudioManager are not obligated to grant this special exception for their modified versions; it is their choice whether to do so. The GNU Lesser General Public License, version 2.1, gives permission to release a modified version without this exception; this exception also makes it possible to release a modified version which carries forward this exception.
25 #ifndef SOCKETHANDLER_H_
26 #define SOCKETHANDLER_H_
28 #include <audiomanagertypes.h>
29 #include <sys/socket.h>
40 static volatile sig_atomic_t gDispatchDone = 0; //this global is used to stop the mainloop
42 typedef uint16_t sh_timerHandle_t; //!<this is a handle for a timer to be used with the SocketHandler
43 typedef uint16_t sh_pollHandle_t; //!<this is a handle for a filedescriptor to be used with the SocketHandler
49 class shTimerCallBack;
55 virtual ~SocketHandler();
57 am_Error_e addFDPoll(const int fd, const short event, shPollPrepare *prepare, shPollFired *fired, shPollCheck *check, shPollDispatch *dispatch, void* userData, sh_pollHandle_t& handle);
58 am_Error_e removeFDPoll(const sh_pollHandle_t handle);
59 am_Error_e updateEventFlags(const sh_pollHandle_t handle, const short events);
60 am_Error_e addTimer(const timespec timeouts, shTimerCallBack*& callback, sh_timerHandle_t& handle, void* userData);
61 am_Error_e removeTimer(const sh_timerHandle_t handle);
62 am_Error_e restartTimer(const sh_timerHandle_t handle, const timespec timeouts);
63 am_Error_e stopTimer(const sh_timerHandle_t handle);
64 void start_listenting();
65 void stop_listening();
67 struct timer_s //!<struct that holds information of timers
69 sh_timerHandle_t handle; //!<the handle of the timer
70 timespec countdown; //!<the countdown, this value is decreased every time the timer is up
71 timespec timeout; //!<the original timer value
72 shTimerCallBack* callback; //!<the callbackfunction
73 void * userData; //!<saves a void pointer together with the rest.
76 class SubstractTime //!<functor to easy substract from each countdown value
81 SubstractTime(timespec param) :
83 void operator()(timer_s& t) const;
86 struct sh_poll_s //!<struct that holds information about polls
88 sh_pollHandle_t handle; //!<handle to uniquely adress a filedesriptor
89 shPollPrepare *prepareCB;
92 shPollDispatch *dispatchCB;
93 pollfd pollfdValue; //!<the array for polling the filedescriptors
94 void *userData; //!<userdata saved together with the callback.
97 typedef std::vector<pollfd> mPollfd_t; //!<vector of filedescriptors
98 typedef std::vector<sh_poll_s> mListPoll_t; //!<list for the callbacks
105 CopyPollfd(mPollfd_t& dest) :
107 void operator()(const sh_poll_s& row);
110 bool fdIsValid(const int fd) const;
113 int timespec2ms(const timespec& time);
114 timespec* insertTime(timespec& buffertime);
115 static bool compareCountdown(const timer_s& a, const timer_s& b)
117 return (a.countdown.tv_sec == b.countdown.tv_sec) ? (a.countdown.tv_nsec < b.countdown.tv_nsec) : (a.countdown.tv_sec < b.countdown.tv_sec);
120 static bool onlyFiredEvents(const pollfd& a)
122 return a.revents == 0 ? false : true;
125 //todo: maybe we could simplify mListActiveTimer to hold only the handle and the countdown ....
126 mPollfd_t mfdPollingArray;
127 mListPoll_t mListPoll;
128 std::list<timer_s> mListTimer; //!<list of all timers
129 std::list<timer_s> mListActiveTimer; //!<list of all currently active timers
130 sh_timerHandle_t mNextTimer;
131 sh_timerHandle_t mLastInsertedHandle;
132 sh_pollHandle_t mLastInsertedPollHandle;
134 bool mRecreatePollfds;
138 * classic functor for the BasicTimerCallback
140 class shTimerCallBack
143 virtual void Call(const sh_timerHandle_t handle, void* userData)=0;
144 virtual ~shTimerCallBack(){};
150 virtual void Call(const sh_pollHandle_t handle, void* userData)=0;
151 virtual ~shPollPrepare(){};
157 virtual void Call(const pollfd pollfd, const sh_pollHandle_t handle, void* userData)=0;
158 virtual ~ shPollFired(){};
164 virtual bool Call(const sh_pollHandle_t handle, void* userData)=0;
165 virtual ~ shPollCheck(){};
171 virtual bool Call(const sh_pollHandle_t handle, void* userData)=0;
172 virtual ~ shPollDispatch() {};
176 * template to create the functor for a class
178 template<class TClass> class shTimerCallBack_T: public shTimerCallBack
182 void (TClass::*mFunction)(sh_timerHandle_t handle, void* userData);
185 shTimerCallBack_T(TClass* instance, void(TClass::*function)(sh_timerHandle_t handle, void* userData)) :
186 mInstance(instance),//
187 mFunction(function) {};
189 virtual void Call(sh_timerHandle_t handle, void* userData)
191 (*mInstance.*mFunction)(handle, userData);
196 * template to create the functor for a class
198 template<class TClass> class shPollPrepare_T: public shPollPrepare
202 void (TClass::*mFunction)(const sh_timerHandle_t handle, void* userData);
205 shPollPrepare_T(TClass* instance, void(TClass::*function)(const sh_timerHandle_t handle, void* userData)) :
206 mInstance(instance), //
207 mFunction(function){};
209 virtual void Call(const sh_timerHandle_t handle, void* userData)
211 (*mInstance.*mFunction)(handle, userData);
215 template<class TClass> class shPollFired_T: public shPollFired
219 void (TClass::*mFunction)(const pollfd pollfd, const sh_pollHandle_t handle, void* userData);
222 shPollFired_T(TClass* instance, void(TClass::*function)(const pollfd pollfd, const sh_pollHandle_t handle, void* userData)) :
223 mInstance(instance), //
224 mFunction(function){};
226 virtual void Call(const pollfd pollfd, const sh_pollHandle_t handle, void* userData)
228 (*mInstance.*mFunction)(pollfd, handle, userData);
232 template<class TClass> class shPollCheck_T: public shPollCheck
236 bool (TClass::*mFunction)(const sh_pollHandle_t handle, void* userData);
239 shPollCheck_T(TClass* instance, bool(TClass::*function)(const sh_pollHandle_t handle, void* userData)) :
240 mInstance(instance), //
241 mFunction(function){};
243 virtual bool Call(const sh_pollHandle_t handle, void* userData)
245 return (*mInstance.*mFunction)(handle, userData);
249 template<class TClass> class shPollDispatch_T: public shPollDispatch
253 bool (TClass::*mFunction)(const sh_pollHandle_t handle, void* userData);
256 shPollDispatch_T(TClass* instance, bool(TClass::*function)(const sh_pollHandle_t handle, void* userData)) :
257 mInstance(instance), //
258 mFunction(function) {};
260 virtual bool Call(const sh_pollHandle_t handle, void* userData)
262 return (*mInstance.*mFunction)(handle, userData);
266 #endif /* SOCKETHANDLER_H_ */