pollerimpl.h
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1 /*
2  * Copyright (C) 2007 Tommi Maekitalo
3  *
4  * This library is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * As a special exception, you may use this file as part of a free
10  * software library without restriction. Specifically, if other files
11  * instantiate templates or use macros or inline functions from this
12  * file, or you compile this file and link it with other files to
13  * produce an executable, this file does not by itself cause the
14  * resulting executable to be covered by the GNU General Public
15  * License. This exception does not however invalidate any other
16  * reasons why the executable file might be covered by the GNU Library
17  * General Public License.
18  *
19  * This library is distributed in the hope that it will be useful,
20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22  * Lesser General Public License for more details.
23  *
24  * You should have received a copy of the GNU Lesser General Public
25  * License along with this library; if not, write to the Free Software
26  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
27  */
28 
29 
30 #ifndef TNT_POLLERIMPL_H
31 #define TNT_POLLERIMPL_H
32 
33 #include <config.h>
34 #include "tnt/job.h"
35 #include <cxxtools/mutex.h>
36 #include <cxxtools/posix/pipe.h>
37 
38 #ifdef WITH_EPOLL
39 # include <map>
40 #else
41 # include <deque>
42 # include <vector>
43 # include <sys/poll.h>
44 #endif
45 
46 namespace tnt
47 {
48  class PollerImpl : public PollerIf
49  {
50  Jobqueue& queue;
51 
52  cxxtools::posix::Pipe notify_pipe;
53 
54 #ifdef WITH_EPOLL
55 
56  int pollFd;
57 
58  typedef std::map<int, Jobqueue::JobPtr> jobs_type;
59  typedef std::vector<Jobqueue::JobPtr> new_jobs_type;
60  jobs_type jobs;
61  new_jobs_type new_jobs;
62  int poll_timeout;
63 
64  cxxtools::Mutex mutex;
65 
66  void addFd(int fd);
67  bool removeFd(int fd);
68  void append_new_jobs();
69 
70 #else
71 
72  typedef std::deque<Jobqueue::JobPtr> jobs_type;
73  typedef std::vector<pollfd> pollfds_type;
74 
75  jobs_type current_jobs;
76  pollfds_type pollfds;
77 
78  jobs_type new_jobs;
79 
80  cxxtools::Mutex mutex;
81  int poll_timeout;
82 
83  void append_new_jobs();
84  void append(Jobqueue::JobPtr& job);
85  void dispatch();
86  void remove(jobs_type::size_type n);
87 
88 #endif // #else WITH_EPOLL
89 
90  public:
91  PollerImpl(Jobqueue& q);
92 #ifdef WITH_EPOLL
93  ~PollerImpl();
94 #endif
95 
96  virtual void run();
97  void doStop();
98  void addIdleJob(Jobqueue::JobPtr job);
99  };
100 
101 }
102 
103 #endif // TNT_POLLER_H
104