implemented semaph factory

This commit is contained in:
Robin Müller 2020-05-18 20:35:13 +02:00
parent 067cd95731
commit 7227c3a866
8 changed files with 177 additions and 62 deletions

View File

@ -3,21 +3,21 @@
#include <framework/serviceinterface/ServiceInterfaceStream.h>
BinarySemaphore::BinarySemaphore() {
Semaphore::Semaphore() {
handle = xSemaphoreCreateBinary();
if(handle == nullptr) {
sif::error << "Binary semaphore creation failure" << std::endl;
sif::error << "Semaphore: Binary semaph creation failure" << std::endl;
}
xSemaphoreGive(handle);
}
BinarySemaphore::~BinarySemaphore() {
Semaphore::~Semaphore() {
vSemaphoreDelete(handle);
}
// This copy ctor is important as it prevents the assignment to a ressource
// (other.handle) variable which is later deleted!
BinarySemaphore::BinarySemaphore(const BinarySemaphore& other) {
Semaphore::Semaphore(const Semaphore& other) {
handle = xSemaphoreCreateBinary();
if(handle == nullptr) {
sif::error << "Binary semaphore creation failure" << std::endl;
@ -25,7 +25,7 @@ BinarySemaphore::BinarySemaphore(const BinarySemaphore& other) {
xSemaphoreGive(handle);
}
BinarySemaphore& BinarySemaphore::operator =(const BinarySemaphore& s) {
Semaphore& Semaphore::operator =(const Semaphore& s) {
if(this != &s) {
handle = xSemaphoreCreateBinary();
if(handle == nullptr) {
@ -36,7 +36,7 @@ BinarySemaphore& BinarySemaphore::operator =(const BinarySemaphore& s) {
return *this;
}
BinarySemaphore::BinarySemaphore(BinarySemaphore&& s) {
Semaphore::Semaphore(Semaphore&& s) {
handle = xSemaphoreCreateBinary();
if(handle == nullptr) {
sif::error << "Binary semaphore creation failure" << std::endl;
@ -44,8 +44,8 @@ BinarySemaphore::BinarySemaphore(BinarySemaphore&& s) {
xSemaphoreGive(handle);
}
BinarySemaphore& BinarySemaphore::operator =(
BinarySemaphore&& s) {
Semaphore& Semaphore::operator =(
Semaphore&& s) {
if(&s != this) {
handle = xSemaphoreCreateBinary();
if(handle == nullptr) {
@ -56,15 +56,15 @@ BinarySemaphore& BinarySemaphore::operator =(
return *this;
}
ReturnValue_t BinarySemaphore::takeBinarySemaphore(uint32_t timeoutMs) {
ReturnValue_t Semaphore::takeBinarySemaphore(uint32_t timeoutMs) {
if(handle == nullptr) {
return SEMAPHORE_NULLPOINTER;
}
TickType_t timeout = BinarySemaphore::NO_BLOCK_TICKS;
if(timeoutMs == BinarySemaphore::BLOCK_TIMEOUT) {
timeout = BinarySemaphore::BLOCK_TIMEOUT_TICKS;
TickType_t timeout = Semaphore::NO_BLOCK_TICKS;
if(timeoutMs == Semaphore::BLOCK_TIMEOUT) {
timeout = Semaphore::BLOCK_TIMEOUT_TICKS;
}
else if(timeoutMs > BinarySemaphore::NO_BLOCK_TIMEOUT){
else if(timeoutMs > Semaphore::NO_BLOCK_TIMEOUT){
timeout = pdMS_TO_TICKS(timeoutMs);
}
@ -77,7 +77,7 @@ ReturnValue_t BinarySemaphore::takeBinarySemaphore(uint32_t timeoutMs) {
}
}
ReturnValue_t BinarySemaphore::takeBinarySemaphoreTickTimeout(
ReturnValue_t Semaphore::takeBinarySemaphoreTickTimeout(
TickType_t timeoutTicks) {
if(handle == nullptr) {
return SEMAPHORE_NULLPOINTER;
@ -91,7 +91,7 @@ ReturnValue_t BinarySemaphore::takeBinarySemaphoreTickTimeout(
}
}
ReturnValue_t BinarySemaphore::giveBinarySemaphore() {
ReturnValue_t Semaphore::giveBinarySemaphore() {
if (handle == nullptr) {
return SEMAPHORE_NULLPOINTER;
}
@ -103,11 +103,11 @@ ReturnValue_t BinarySemaphore::giveBinarySemaphore() {
}
}
SemaphoreHandle_t BinarySemaphore::getSemaphore() {
SemaphoreHandle_t Semaphore::getSemaphore() {
return handle;
}
ReturnValue_t BinarySemaphore::giveBinarySemaphore(SemaphoreHandle_t semaphore) {
ReturnValue_t Semaphore::giveBinarySemaphore(SemaphoreHandle_t semaphore) {
if (semaphore == nullptr) {
return SEMAPHORE_NULLPOINTER;
}
@ -119,7 +119,7 @@ ReturnValue_t BinarySemaphore::giveBinarySemaphore(SemaphoreHandle_t semaphore)
}
}
void BinarySemaphore::resetSemaphore() {
void Semaphore::resetSemaphore() {
if(handle != nullptr) {
vSemaphoreDelete(handle);
handle = xSemaphoreCreateBinary();
@ -127,20 +127,20 @@ void BinarySemaphore::resetSemaphore() {
}
}
ReturnValue_t BinarySemaphore::acquire(uint32_t timeoutMs) {
ReturnValue_t Semaphore::acquire(uint32_t timeoutMs) {
return takeBinarySemaphore(timeoutMs);
}
ReturnValue_t BinarySemaphore::release() {
ReturnValue_t Semaphore::release() {
return giveBinarySemaphore();
}
uint8_t BinarySemaphore::getSemaphoreCounter() {
uint8_t Semaphore::getSemaphoreCounter() {
return uxSemaphoreGetCount(handle);
}
// Be careful with the stack size here. This is called from an ISR!
ReturnValue_t BinarySemaphore::giveBinarySemaphoreFromISR(SemaphoreHandle_t semaphore,
ReturnValue_t Semaphore::giveBinarySemaphoreFromISR(SemaphoreHandle_t semaphore,
BaseType_t * higherPriorityTaskWoken) {
if (semaphore == nullptr) {
return SEMAPHORE_NULLPOINTER;
@ -157,3 +157,4 @@ ReturnValue_t BinarySemaphore::giveBinarySemaphoreFromISR(SemaphoreHandle_t sema
return SEMAPHORE_NOT_OWNED;
}
}

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@ -14,14 +14,16 @@ extern "C" {
// and switch between the classes with #ifdefs.
// Task Notifications require FreeRTOS V8.2 something..
/**
* @brief OS Tool to achieve synchronization of between tasks or between task and ISR
* @brief OS Tool to achieve synchronization of between tasks or between
* task and ISR. The default semaphore implementation creates a
* binary semaphore, which can only be taken once.
* @details
* Documentation: https://www.freertos.org/Embedded-RTOS-Binary-Semaphores.html
*
* @author R. Mueller
* @ingroup osal
*/
class BinarySemaphore: public SemaphoreIF,
class Semaphore: public SemaphoreIF,
public HasReturnvaluesIF {
public:
static const uint8_t INTERFACE_ID = CLASS_ID::SEMAPHORE_IF;
@ -41,35 +43,21 @@ public:
static constexpr ReturnValue_t SEMAPHORE_NOT_OWNED = MAKE_RETURN_CODE(2);
static constexpr ReturnValue_t SEMAPHORE_NULLPOINTER = MAKE_RETURN_CODE(3);
BinarySemaphore();
/**
* @brief Copy ctor
*/
BinarySemaphore(const BinarySemaphore&);
/**
* @brief Copy assignment
*/
BinarySemaphore& operator=(const BinarySemaphore&);
/**
* @brief Move constructor
*/
BinarySemaphore (BinarySemaphore &&);
/**
* Move assignment
*/
BinarySemaphore & operator=(BinarySemaphore &&);
/**
* Delete the binary semaphore to prevent a memory leak
*/
virtual ~BinarySemaphore();
//! @brief Default ctor
Semaphore();
//! @brief Copy ctor
Semaphore(const Semaphore&);
//! @brief Copy assignment
Semaphore& operator=(const Semaphore&);
//! @brief Move ctor
Semaphore (Semaphore &&);
//! @brief Move assignment
Semaphore & operator=(Semaphore &&);
//! @brief Destructor
virtual ~Semaphore();
ReturnValue_t acquire(uint32_t timeoutMs =
BinarySemaphore::NO_BLOCK_TIMEOUT) override;
Semaphore::NO_BLOCK_TIMEOUT) override;
ReturnValue_t release() override;
uint8_t getSemaphoreCounter() override;
@ -83,7 +71,7 @@ public:
* -@c RETURN_FAILED on failure
*/
ReturnValue_t takeBinarySemaphore(uint32_t timeoutMs =
BinarySemaphore::NO_BLOCK_TIMEOUT);
Semaphore::NO_BLOCK_TIMEOUT);
/**
* Same as lockBinarySemaphore() with timeout in FreeRTOS ticks.
@ -92,7 +80,7 @@ public:
* - @c RETURN_FAILED on failure
*/
ReturnValue_t takeBinarySemaphoreTickTimeout(TickType_t timeoutTicks =
BinarySemaphore::NO_BLOCK_TICKS);
Semaphore::NO_BLOCK_TICKS);
/**
* Give back the binary semaphore
@ -130,7 +118,7 @@ public:
*/
static ReturnValue_t giveBinarySemaphoreFromISR(SemaphoreHandle_t semaphore,
BaseType_t * higherPriorityTaskWoken);
private:
protected:
SemaphoreHandle_t handle;
};

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@ -0,0 +1,26 @@
#include <framework/osal/FreeRTOS/CountingSemaphore.h>
#include <framework/serviceinterface/ServiceInterfaceStream.h>
CountingSemaphore::CountingSemaphore(uint8_t count, uint8_t initCount):
count(count), initCount(initCount) {
handle = xSemaphoreCreateCounting(count, initCount);
if(handle == nullptr) {
sif::error << "CountingSemaphore: Creation failure" << std::endl;
}
}
CountingSemaphore::CountingSemaphore(CountingSemaphore&& other) {
handle = xSemaphoreCreateCounting(other.count, other.initCount);
if(handle == nullptr) {
sif::error << "CountingSemaphore: Creation failure" << std::endl;
}
}
CountingSemaphore& CountingSemaphore::operator =(
CountingSemaphore&& other) {
handle = xSemaphoreCreateCounting(other.count, other.initCount);
if(handle == nullptr) {
sif::error << "CountingSemaphore: Creation failure" << std::endl;
}
return * this;
}

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@ -0,0 +1,21 @@
#ifndef FRAMEWORK_OSAL_FREERTOS_COUNTINGSEMAPHORE_H_
#define FRAMEWORK_OSAL_FREERTOS_COUNTINGSEMAPHORE_H_
#include <framework/osal/FreeRTOS/BinarySemaphore.h>
class CountingSemaphore: public Semaphore {
public:
CountingSemaphore(uint8_t count, uint8_t initCount);
//! @brief Copy ctor, disabled
CountingSemaphore(const CountingSemaphore&) = delete;
//! @brief Copy assignment, disabled
CountingSemaphore& operator=(const CountingSemaphore&) = delete;
//! @brief Move ctor
CountingSemaphore (CountingSemaphore &&);
//! @brief Move assignment
CountingSemaphore & operator=(CountingSemaphore &&);
private:
uint8_t count = 0;
uint8_t initCount = 0;
};
#endif /* FRAMEWORK_OSAL_FREERTOS_COUNTINGSEMAPHORE_H_ */

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@ -3,10 +3,10 @@
#include <framework/ipc/MutexIF.h>
#include <FreeRTOS.h>
#include "semphr.h"
extern "C" {
#include <freertos/FreeRTOS.h>
#include <freertos/semphr.h>
}
class Mutex : public MutexIF {

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@ -1,10 +1,11 @@
#include <framework/ipc/MutexFactory.h>
#include "../FreeRTOS/Mutex.h"
#include <framework/osal/FreeRTOS/Mutex.h>
//TODO: Different variant than the lazy loading in QueueFactory. What's better and why? -> one is on heap the other on bss/data
//TODO: Different variant than the lazy loading in QueueFactory.
//What's better and why? -> one is on heap the other on bss/data
//MutexFactory* MutexFactory::factoryInstance = new MutexFactory();
MutexFactory* MutexFactory::factoryInstance = NULL;
MutexFactory* MutexFactory::factoryInstance = nullptr;
MutexFactory::MutexFactory() {
}
@ -13,7 +14,7 @@ MutexFactory::~MutexFactory() {
}
MutexFactory* MutexFactory::instance() {
if (factoryInstance == NULL){
if (factoryInstance == nullptr){
factoryInstance = new MutexFactory();
}
return MutexFactory::factoryInstance;

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@ -0,0 +1,33 @@
#include <framework/osal/FreeRTOS/BinarySemaphore.h>
#include <framework/osal/FreeRTOS/CountingSemaphore.h>
#include <framework/tasks/SemaphoreFactory.h>
#include <framework/serviceinterface/ServiceInterfaceStream.h>
SemaphoreFactory* SemaphoreFactory::factoryInstance = nullptr;
SemaphoreFactory::SemaphoreFactory() {
}
SemaphoreFactory::~SemaphoreFactory() {
delete factoryInstance;
}
SemaphoreFactory* SemaphoreFactory::instance() {
if (factoryInstance == nullptr){
factoryInstance = new SemaphoreFactory();
}
return SemaphoreFactory::factoryInstance;
}
SemaphoreIF* SemaphoreFactory::createBinarySemaphore() {
return new Semaphore();
}
SemaphoreIF* SemaphoreFactory::createCountingSemaphore(uint8_t count,
uint8_t initCount) {
return new CountingSemaphore(count, initCount);
}
void SemaphoreFactory::deleteMutex(SemaphoreIF* semaphore) {
delete semaphore;
}

45
tasks/SemaphoreFactory.h Normal file
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@ -0,0 +1,45 @@
#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_ */