mirror of https://github.com/ArduPilot/ardupilot
33 lines
776 B
C
33 lines
776 B
C
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#ifndef __AP_HAL_AVR_SEMAPHORE_H__
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#define __AP_HAL_AVR_SEMAPHORE_H__
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#include <AP_HAL.h>
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#include <AP_HAL_AVR_Namespace.h>
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class AP_HAL_AVR::AVRSemaphore : public AP_HAL::Semaphore {
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public:
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// Constructor
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AVRSemaphore();
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// get - to claim ownership of the semaphore
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bool get(void* caller);
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// release - to give up ownership of the semaphore
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bool release(void* caller);
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// call_on_release - returns true if caller successfully added to the
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// queue to be called back
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bool call_on_release(void* caller, AP_HAL::Proc k);
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protected:
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bool _taken;
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void* _owner;
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void* _waiting_owner;
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// procedure of process waiting for sempahore
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AP_HAL::Proc _waiting_k;
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};
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#endif // __AP_HAL_AVR_SEMAPHORE_H__
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