tbx  0.7.5
pthreadguard.h
1 /*
2  * tbx RISC OS toolbox library
3  *
4  * Copyright (C) 2014 Alan Buckley All Rights Reserved.
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a
7  * copy of this software and associated documentation files (the "Software"),
8  * to deal in the Software without restriction, including without limitation
9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10  * and/or sell copies of the Software, and to permit persons to whom the
11  * Software is furnished to do so, subject to the following conditions:
12  *
13  * The above copyright notice and this permission notice shall be included
14  * in all copies or substantial portions of the Software.
15  *
16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22  * THE SOFTWARE.
23  */
24 /*
25  * PThreadGuard.h
26  *
27  * Created on: 6 Jun 2014
28  * Author: alanb
29  */
30 
31 #ifndef TBX_PTHREADGUARD_H_
32 #define TBX_PTHREADGUARD_H_
33 
34 #include "prepolllistener.h"
35 #include "posteventlistener.h"
36 
41 class PThreadGuard :
42  private tbx::PrePollListener,
44 {
45 
46  PThreadGuard();
47  ~PThreadGuard();
48 
49  static PThreadGuard *_instance;
50 
51  virtual bool pre_poll();
52  virtual void post_event(int reason_code, const tbx::PollBlock &poll_block, const tbx::IdBlock &id_block, int reply_to);
53 
54 public:
55  static void start();
56  static void stop();
57 };
58 
59 #endif /* TBX_PTHREADGUARD_H_ */
Structure holding the raw data from a call to Wimp_Poll.
Definition: pollinfo.h:71
Class to provide a listener to allow processing before the call to wimp poll.
Definition: posteventlistener.h:47
static void stop()
Turns off the thread guard.
Definition: pthreadguard.cc:68
Class to provide a listener to allow processing before the call to wimp poll.
Definition: prepolllistener.h:47
static void start()
Start the pthread guard if it is not already started.
Definition: pthreadguard.cc:53
Helper class to stop pthreads from executing during event processing which is unsafe.
Definition: pthreadguard.h:41
Information passed back by the Toolbox with each toolbox event providing information on where the eve...
Definition: pollinfo.h:41