root/trunk/libffado/src/libutil/Watchdog.h

Revision 980, 3.0 kB (checked in by ppalmers, 16 years ago)

- add runaway checks to more RT threads

Line 
1 /*
2  * Copyright (C) 2005-2008 by Pieter Palmers
3  *
4  * This file is part of FFADO
5  * FFADO = Free Firewire (pro-)audio drivers for linux
6  *
7  * FFADO is based upon FreeBoB.
8  *
9  * This program is free software: you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation, either version 2 of the License, or
12  * (at your option) version 3 of the License.
13  *
14  * This program is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17  * GNU General Public License for more details.
18  *
19  * You should have received a copy of the GNU General Public License
20  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
21  *
22  */
23
24 #ifndef __FFADO_WATCHDOG__
25 #define __FFADO_WATCHDOG__
26
27 #include "debugmodule/debugmodule.h"
28 #include "libutil/Thread.h"
29
30 namespace Util {
31
32 typedef std::vector<Thread *> ThreadVector;
33 typedef std::vector<Thread *>::iterator ThreadVectorIterator;
34
35 class IsoHandlerManager;
36
37 class Watchdog
38 {
39 private:
40     class WatchdogCheckTask : public Util::RunnableInterface
41     {
42     public:
43         WatchdogCheckTask(Watchdog& parent, unsigned int interval_usecs);
44         virtual ~WatchdogCheckTask() {};
45
46         bool Init();
47         bool Execute();
48     private:
49         Watchdog& m_parent;
50         unsigned int m_interval;
51         // debug stuff
52         #ifdef DEBUG
53             uint64_t m_last_loop_entry;
54             int m_successive_short_loops;
55         #endif
56         DECLARE_DEBUG_MODULE_REFERENCE;
57     };
58
59     class WatchdogHartbeatTask : public Util::RunnableInterface
60     {
61     public:
62         WatchdogHartbeatTask(Watchdog& parent, unsigned int interval_usecs);
63         virtual ~WatchdogHartbeatTask() {};
64
65         bool Init();
66         bool Execute();
67     private:
68         Watchdog& m_parent;
69         unsigned int m_interval;
70         // debug stuff
71         #ifdef DEBUG
72             uint64_t m_last_loop_entry;
73             int m_successive_short_loops;
74         #endif
75         DECLARE_DEBUG_MODULE_REFERENCE;
76     };
77
78 public:
79     Watchdog();
80     Watchdog(unsigned int interval_usec, bool realtime, unsigned int priority);
81     virtual ~Watchdog();
82
83     bool registerThread(Thread *thread);
84     bool unregisterThread(Thread *thread);
85
86     bool start();
87
88     bool setThreadParameters(bool rt, int priority);
89
90     void setVerboseLevel(int i);
91
92 protected:
93     bool getHartbeat() {return m_hartbeat;};
94     void clearHartbeat() {m_hartbeat=false;};
95     void setHartbeat() {m_hartbeat=true;};
96
97     void rescheduleThreads();
98
99 private:
100     ThreadVector    m_Threads;
101     bool            m_hartbeat;
102
103     unsigned int    m_check_interval;
104     bool            m_realtime;
105     int             m_priority;
106     Util::Thread *  m_CheckThread;
107     Util::Thread *  m_HartbeatThread;
108     WatchdogCheckTask *     m_CheckTask;
109     WatchdogHartbeatTask *  m_HartbeatTask;
110
111     DECLARE_DEBUG_MODULE;
112 };
113
114 } // end of namespace Util
115
116 #endif /* __FFADO_WATCHDOG__ */
117
118
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