88 lines
2.5 KiB
C++
88 lines
2.5 KiB
C++
#ifndef FRAMEWORK_IPC_MUTEXIF_H_
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#define FRAMEWORK_IPC_MUTEXIF_H_
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#include <framework/returnvalues/HasReturnvaluesIF.h>
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/**
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* @brief Common interface for OS Mutex objects which provide MUTual EXclusion.
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*
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* @details https://en.wikipedia.org/wiki/Lock_(computer_science)
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* @ingroup osal
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* @ingroup interface
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*/
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class MutexIF {
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public:
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/**
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* @brief Timeout value used for polling lock attempt.
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* @details
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* If the lock is not successfull, MUTEX_TIMEOUT will be returned
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* immediately. Value needs to be defined in implementation.
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*/
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static const uint32_t POLLING;
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/**
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* @brief Timeout value used for permanent blocking lock attempt.
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* @details
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* The task will be blocked (indefinitely) until the mutex is unlocked.
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* Value needs to be defined in implementation.
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*/
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static const uint32_t BLOCKING;
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static const uint8_t INTERFACE_ID = CLASS_ID::MUTEX_IF;
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/**
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* The system lacked the necessary resources (other than memory) to initialize another mutex.
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*/
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static const ReturnValue_t NOT_ENOUGH_RESOURCES = MAKE_RETURN_CODE(1);
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/**
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* Insufficient memory to create or init Mutex
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*/
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static const ReturnValue_t INSUFFICIENT_MEMORY = MAKE_RETURN_CODE(2);
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/**
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* Caller does not have enough or right privilege
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*/
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static const ReturnValue_t NO_PRIVILEGE = MAKE_RETURN_CODE(3);
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/**
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* Wrong Attribute Setting
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*/
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static const ReturnValue_t WRONG_ATTRIBUTE_SETTING = MAKE_RETURN_CODE(4);
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/**
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* The mutex is already locked
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*/
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static const ReturnValue_t MUTEX_ALREADY_LOCKED = MAKE_RETURN_CODE(5);
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/**
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* Mutex object not found
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*/
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static const ReturnValue_t MUTEX_NOT_FOUND = MAKE_RETURN_CODE(6);
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/**
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* Mutex could not be locked because max amount of recursive locks
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*/
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static const ReturnValue_t MUTEX_MAX_LOCKS = MAKE_RETURN_CODE(7);
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/**
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* The current thread already owns this mutex
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*/
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static const ReturnValue_t CURR_THREAD_ALREADY_OWNS_MUTEX = MAKE_RETURN_CODE(8);
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/**
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* Current thread does not own this mutex
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*/
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static const ReturnValue_t CURR_THREAD_DOES_NOT_OWN_MUTEX = MAKE_RETURN_CODE(9);
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/**
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* The Mutex could not be blocked before timeout
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*/
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static const ReturnValue_t MUTEX_TIMEOUT = MAKE_RETURN_CODE(10);
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/**
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* Invalid Mutex ID
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*/
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static const ReturnValue_t MUTEX_INVALID_ID = MAKE_RETURN_CODE(11);
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/**
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* Mutex destroyed while waiting
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*/
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static const ReturnValue_t MUTEX_DESTROYED_WHILE_WAITING = MAKE_RETURN_CODE(12);
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virtual ~MutexIF() {}
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virtual ReturnValue_t lockMutex(uint32_t timeoutMs) = 0;
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virtual ReturnValue_t unlockMutex() = 0;
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};
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#endif /* FRAMEWORK_IPC_MUTEXIF_H_ */
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