fsfw/tasks/SemaphoreFactory.h

46 lines
1.3 KiB
C++

#ifndef FRAMEWORK_TASKS_SEMAPHOREFACTORY_H_
#define FRAMEWORK_TASKS_SEMAPHOREFACTORY_H_
#include <framework/tasks/SemaphoreIF.h>
/**
* Creates Semaphore.
* This class is a "singleton" interface, i.e. it provides an
* interface, but also is the base class for a singleton.
*/
class SemaphoreFactory {
public:
virtual ~SemaphoreFactory();
/**
* Returns the single instance of SemaphoreFactory.
* The implementation of #instance is found in its subclasses.
* Thus, we choose link-time variability of the instance.
*/
static SemaphoreFactory* instance();
/**
* Create a binary semaphore.
* Creator function for a binary semaphore which may only be acquired once
* @return Pointer to newly created semaphore class instance.
*/
SemaphoreIF* createBinarySemaphore();
/**
* Create a counting semaphore.
* Creator functons for a counting semaphore which may be acquired multiple
* times.
* @param count Semaphore can be taken count times.
* @param initCount Initial count value.
* @return
*/
SemaphoreIF* createCountingSemaphore(uint8_t count, uint8_t initCount);
void deleteMutex(SemaphoreIF* mutex);
private:
/**
* External instantiation is not allowed.
*/
SemaphoreFactory();
static SemaphoreFactory* factoryInstance;
};
#endif /* FRAMEWORK_TASKS_SEMAPHOREFACTORY_H_ */