libcommonc++  0.7
AsyncIOPoller.h++
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1 /* ---------------------------------------------------------------------------
2  commonc++ - A C++ Common Class Library
3  Copyright (C) 2005-2014 Mark A Lindner
4 
5  This file is part of commonc++.
6 
7  This library is free software; you can redistribute it and/or
8  modify it under the terms of the GNU Library General Public
9  License as published by the Free Software Foundation; either
10  version 2 of the License, or (at your option) any later version.
11 
12  This library is distributed in the hope that it will be useful,
13  but WITHOUT ANY WARRANTY; without even the implied warranty of
14  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  Library General Public License for more details.
16 
17  You should have received a copy of the GNU Library General Public
18  License along with this library; if not, write to the Free
19  Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20  ---------------------------------------------------------------------------
21 */
22 
23 #ifndef __ccxx_AsyncIOPoller_hxx
24 #define __ccxx_AsyncIOPoller_hxx
25 
27 
28 namespace ccxx {
29 
36 {
37  public:
38 
40  AsyncIOPoller();
41 
43  ~AsyncIOPoller();
44 
51  void addTask(AsyncIOTask* task);
52 
57  void removeTask(AsyncIOTask* task);
58 
60  void removeAllTasks();
61 
63  uint_t getTaskCount() const;
64 
76  bool poll(timespan_ms_t timeout = 0);
77 
78  private:
79 
80  class AsyncIOTaskList; // fwd decl
81  AsyncIOTaskList *_tasks;
82 #if defined(CCXX_OS_WINDOWS)
83  HANDLE* _cblist;
84 #elif !defined(CCXX_OS_ANDROID)
85  struct aiocb** _cblist;
86 #endif
87  uint_t _cbcount;
88  bool _dirty;
89 };
90 
91 } // namespace ccxx
92 
93 #endif // __ccxx_AsyncIOTask_hxx
A class that polls a set of AsyncIOTask objects.
Definition: AsyncIOPoller.h++:35
unsigned int uint_t
An alias for unsigned int.
Definition: Integers.h++:74
#define COMMONCPP_API
Definition: Common.h++:126
int timespan_ms_t
A timespan expressed in milliseconds.
Definition: Integers.h++:104
Definition: AllocationMap.c++:25
An object representing an asynchronous I/O operation.
Definition: AsyncIOTask.h++:43