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Using Watchdog » watchdog.h

Jonathan Cormier, 10/14/2014 03:43 PM

 
#include <semaphore.h>

namespace MityDSP {

/**
* The tcWatchdog class provides a simple abstraction for the linux
* watchdog device management. Typical use pattern:
*
* @code {
*
* tcWatchdog* pW = new tcWatchdog();
* int handle = pW->RegisterCheckpoint();
* pW->StartWatchDog(10);
*
* while (!done)
* {
* /// do stuff
* pW->Checkin(handle);
* }
*
* delete pW;
*
* @code }
*/
class tcWatchdog
{
public:
tcWatchdog(const char* apDevice = "/dev/watchdog");
virtual ~tcWatchdog(void);

int StartWatchDog(int TimeoutSecs);

int RegisterCheckpoint(void);

int UnRegisterCheckpoint(int handle);

int Checkin(int Checkpoint);

protected:
volatile int mnMask;
volatile int mnSet;
sem_t mhSem;
char* mpFileName;
int mnFd;
};

}
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