Merge branch 'master' into mueller/serialize-convergence

globalfunctions/DleEncoder.cpp

@@ -1,95 +1,124 @@
-#include "DleEncoder.h"
+#include "../globalfunctions/DleEncoder.h"
 
-DleEncoder::DleEncoder() {
+DleEncoder::DleEncoder() {}
-}
 
-DleEncoder::~DleEncoder() {
+DleEncoder::~DleEncoder() {}
+
+ReturnValue_t DleEncoder::encode(const uint8_t* sourceStream,
+		size_t sourceLen, uint8_t* destStream, size_t maxDestLen,
+		size_t* encodedLen, bool addStxEtx) {
+	if (maxDestLen < 2) {
+		return STREAM_TOO_SHORT;
+	}
+	size_t encodedIndex = 0, sourceIndex = 0;
+	uint8_t nextByte;
+	if (addStxEtx) {
+		destStream[0] = STX_CHAR;
+		++encodedIndex;
+	}
+
+	while (encodedIndex < maxDestLen and sourceIndex < sourceLen)
+	{
+		nextByte = sourceStream[sourceIndex];
+		// STX, ETX and CR characters in the stream need to be escaped with DLE
+		if (nextByte == STX_CHAR or nextByte == ETX_CHAR or nextByte == CARRIAGE_RETURN) {
+			if (encodedIndex + 1 >= maxDestLen) {
+				return STREAM_TOO_SHORT;
+			}
+			else {
+				destStream[encodedIndex] = DLE_CHAR;
+				++encodedIndex;
+				/* Escaped byte will be actual byte + 0x40. This prevents
+				 * STX, ETX, and carriage return characters from appearing
+				 * in the encoded data stream at all, so when polling an
+				 * encoded stream, the transmission can be stopped at ETX.
+				 * 0x40 was chosen at random with special requirements:
+				 *  - Prevent going from one control char to another
+				 *  - Prevent overflow for common characters */
+				destStream[encodedIndex] = nextByte + 0x40;
+			}
+		}
+		// DLE characters are simply escaped with DLE.
+		else if (nextByte == DLE_CHAR) {
+			if (encodedIndex + 1 >= maxDestLen) {
+			    return STREAM_TOO_SHORT;
+			}
+			else {
+				destStream[encodedIndex] = DLE_CHAR;
+				++encodedIndex;
+				destStream[encodedIndex] = DLE_CHAR;
+			}
+		}
+		else {
+			destStream[encodedIndex] = nextByte;
+		}
+		++encodedIndex;
+		++sourceIndex;
+	}
+
+	if (sourceIndex == sourceLen and encodedIndex < maxDestLen) {
+		if (addStxEtx) {
+			destStream[encodedIndex] = ETX_CHAR;
+			++encodedIndex;
+		}
+		*encodedLen = encodedIndex;
+		return RETURN_OK;
+	}
+	else {
+		return STREAM_TOO_SHORT;
+	}
 }
 
 ReturnValue_t DleEncoder::decode(const uint8_t *sourceStream,
-		uint32_t sourceStreamLen, uint32_t *readLen, uint8_t *destStream,
+		size_t sourceStreamLen, size_t *readLen, uint8_t *destStream,
-		uint32_t maxDestStreamlen, uint32_t *decodedLen) {
+		size_t maxDestStreamlen, size_t *decodedLen) {
-	uint32_t encodedIndex = 0, decodedIndex = 0;
+	size_t encodedIndex = 0, decodedIndex = 0;
 	uint8_t nextByte;
-	if (*sourceStream != STX) {
+	if (*sourceStream != STX_CHAR) {
-		return RETURN_FAILED;
+		return DECODING_ERROR;
 	}
 	++encodedIndex;
+
 	while ((encodedIndex < sourceStreamLen) && (decodedIndex < maxDestStreamlen)
-			&& (sourceStream[encodedIndex] != ETX)
+			&& (sourceStream[encodedIndex] != ETX_CHAR)
-			&& (sourceStream[encodedIndex] != STX)) {
+			&& (sourceStream[encodedIndex] != STX_CHAR)) {
-		if (sourceStream[encodedIndex] == DLE) {
+		if (sourceStream[encodedIndex] == DLE_CHAR) {
 			nextByte = sourceStream[encodedIndex + 1];
-			if (nextByte == 0x10) {
+			// The next byte is a DLE character that was escaped by another
+			// DLE character, so we can write it to the destination stream.
+			if (nextByte == DLE_CHAR) {
 				destStream[decodedIndex] = nextByte;
-			} else {
+			}
-				if ((nextByte == 0x42) || (nextByte == 0x43)
+			else {
-						|| (nextByte == 0x4D)) {
+			    /* The next byte is a STX, DTX or 0x0D character which
+			     * was escaped by a DLE character. The actual byte was
+				 * also encoded by adding + 0x40 to prevent having control chars,
+				 * in the stream at all, so we convert it back. */
+				if (nextByte == 0x42 or nextByte == 0x43 or nextByte == 0x4D) {
 					destStream[decodedIndex] = nextByte - 0x40;
-				} else {
+				}
-					return RETURN_FAILED;
+				else {
+				    return DECODING_ERROR;
 				}
 			}
 			++encodedIndex;
-		} else {
+		}
+		else {
 			destStream[decodedIndex] = sourceStream[encodedIndex];
 		}
+
 		++encodedIndex;
 		++decodedIndex;
 	}
-	if (sourceStream[encodedIndex] != ETX) {
+
-		return RETURN_FAILED;
+	if (sourceStream[encodedIndex] != ETX_CHAR) {
-	} else {
+		*readLen = ++encodedIndex;
+		return DECODING_ERROR;
+	}
+	else {
 		*readLen = ++encodedIndex;
 		*decodedLen = decodedIndex;
 		return RETURN_OK;
 	}
 }
 
-ReturnValue_t DleEncoder::encode(const uint8_t* sourceStream,
-		uint32_t sourceLen, uint8_t* destStream, uint32_t maxDestLen,
-		uint32_t* encodedLen, bool addStxEtx) {
-	if (maxDestLen < 2) {
-		return RETURN_FAILED;
-	}
-	uint32_t encodedIndex = 0, sourceIndex = 0;
-	uint8_t nextByte;
-	if (addStxEtx) {
-		destStream[0] = STX;
-		++encodedIndex;
-	}
-	while ((encodedIndex < maxDestLen) && (sourceIndex < sourceLen)) {
-		nextByte = sourceStream[sourceIndex];
-		if ((nextByte == STX) || (nextByte == ETX) || (nextByte == 0x0D)) {
-			if (encodedIndex + 1 >= maxDestLen) {
-				return RETURN_FAILED;
-			} else {
-				destStream[encodedIndex] = DLE;
-				++encodedIndex;
-				destStream[encodedIndex] = nextByte + 0x40;
-			}
-		} else if (nextByte == DLE) {
-			if (encodedIndex + 1 >= maxDestLen) {
-				return RETURN_FAILED;
-			} else {
-				destStream[encodedIndex] = DLE;
-				++encodedIndex;
-				destStream[encodedIndex] = DLE;
-			}
-		} else {
-			destStream[encodedIndex] = nextByte;
-		}
-		++encodedIndex;
-		++sourceIndex;
-	}
-	if ((sourceIndex == sourceLen) && (encodedIndex < maxDestLen)) {
-		if (addStxEtx) {
-			destStream[encodedIndex] = ETX;
-			++encodedIndex;
-		}
-		*encodedLen = encodedIndex;
-		return RETURN_OK;
-	} else {
-		return RETURN_FAILED;
-	}
-}

globalfunctions/DleEncoder.h

@@ -1,25 +1,79 @@
-#ifndef DLEENCODER_H_
+#ifndef FRAMEWORK_GLOBALFUNCTIONS_DLEENCODER_H_
-#define DLEENCODER_H_
+#define FRAMEWORK_GLOBALFUNCTIONS_DLEENCODER_H_
 
 #include "../returnvalues/HasReturnvaluesIF.h"
+#include <cstddef>
 
+/**
+ * @brief   This DLE Encoder (Data Link Encoder) can be used to encode and
+ *          decode arbitrary data with ASCII control characters
+ * @details
+ * List of control codes:
+ * https://en.wikipedia.org/wiki/C0_and_C1_control_codes
+ *
+ * This encoder can be used to achieve a basic transport layer when using
+ * char based transmission systems.
+ * The passed source strean is converted into a encoded stream by adding
+ * a STX marker at the start of the stream and an ETX marker at the end of
+ * the stream. Any STX, ETX, DLE and CR occurrences in the source stream are
+ * escaped by a DLE character. The encoder also replaces escaped control chars
+ * by another char, so STX, ETX and CR should not appear anywhere in the actual
+ * encoded data stream.
+ *
+ * When using a strictly char based reception of packets encoded with DLE,
+ * STX can be used to notify a reader that actual data will start to arrive
+ * while ETX can be used to notify the reader that the data has ended.
+ */
 class DleEncoder: public HasReturnvaluesIF {
 private:
 	DleEncoder();
 	virtual ~DleEncoder();
 
 public:
-	static const uint8_t STX = 0x02;
+	static constexpr uint8_t INTERFACE_ID = CLASS_ID::DLE_ENCODER;
-	static const uint8_t ETX = 0x03;
+	static constexpr ReturnValue_t STREAM_TOO_SHORT = MAKE_RETURN_CODE(0x01);
-	static const uint8_t DLE = 0x10;
+	static constexpr ReturnValue_t DECODING_ERROR = MAKE_RETURN_CODE(0x02);
 
+	//! Start Of Text character. First character is encoded stream
+	static constexpr uint8_t STX_CHAR = 0x02;
+	//! End Of Text character. Last character in encoded stream
+	static constexpr uint8_t ETX_CHAR = 0x03;
+	//! Data Link Escape character. Used to escape STX, ETX and DLE occurrences
+	//! in the source stream.
+	static constexpr uint8_t DLE_CHAR = 0x10;
+	static constexpr uint8_t CARRIAGE_RETURN = 0x0D;
+
+    /**
+     * Encodes the give data stream by preceding it with the STX marker
+     * and ending it with an ETX marker. STX, ETX and DLE characters inside
+     * the stream are escaped by DLE characters and also replaced by adding
+     * 0x40 (which is reverted in the decoding process).
+     * @param sourceStream
+     * @param sourceLen
+     * @param destStream
+     * @param maxDestLen
+     * @param encodedLen
+     * @param addStxEtx
+     * Adding STX and ETX can be omitted, if they are added manually.
+     * @return
+     */
+    static ReturnValue_t encode(const uint8_t *sourceStream, size_t sourceLen,
+            uint8_t *destStream, size_t maxDestLen, size_t *encodedLen,
+            bool addStxEtx = true);
+
+    /**
+     * Converts an encoded stream back.
+     * @param sourceStream
+     * @param sourceStreamLen
+     * @param readLen
+     * @param destStream
+     * @param maxDestStreamlen
+     * @param decodedLen
+     * @return
+     */
 	static ReturnValue_t decode(const uint8_t *sourceStream,
-			uint32_t sourceStreamLen, uint32_t *readLen, uint8_t *destStream,
+			size_t sourceStreamLen, size_t *readLen, uint8_t *destStream,
-			uint32_t maxDestStreamlen, uint32_t *decodedLen);
+			size_t maxDestStreamlen, size_t *decodedLen);
-
-	static ReturnValue_t encode(const uint8_t *sourceStream, uint32_t sourceLen,
-			uint8_t *destStream, uint32_t maxDestLen, uint32_t *encodedLen,
-			bool addStxEtx = true);
 };
 
-#endif /* DLEENCODER_H_ */
+#endif /* FRAMEWORK_GLOBALFUNCTIONS_DLEENCODER_H_ */

globalfunctions/PeriodicOperationDivider.cpp

@@ -0,0 +1,34 @@
+#include "PeriodicOperationDivider.h"
+
+
+PeriodicOperationDivider::PeriodicOperationDivider(uint32_t divider,
+		bool resetAutomatically): resetAutomatically(resetAutomatically),
+		counter(divider), divider(divider) {
+}
+
+bool PeriodicOperationDivider::checkAndIncrement() {
+	if(counter >= divider) {
+		if(resetAutomatically) {
+			counter = 0;
+		}
+		return true;
+	}
+	counter ++;
+	return false;
+}
+
+void PeriodicOperationDivider::resetCounter() {
+	counter = 0;
+}
+
+void PeriodicOperationDivider::setDivider(uint32_t newDivider) {
+	divider = newDivider;
+}
+
+uint32_t PeriodicOperationDivider::getCounter() const {
+	return counter;
+}
+
+uint32_t PeriodicOperationDivider::getDivider() const {
+	return divider;
+}

globalfunctions/PeriodicOperationDivider.h

@@ -0,0 +1,55 @@
+#ifndef FSFW_GLOBALFUNCTIONS_PERIODICOPERATIONDIVIDER_H_
+#define FSFW_GLOBALFUNCTIONS_PERIODICOPERATIONDIVIDER_H_
+
+#include <cstdint>
+
+/**
+ * @brief	Lightweight helper class to facilitate periodic operation with
+ * 			decreased frequencies.
+ * @details
+ * This class is useful to perform operations which have to be performed
+ * with a reduced frequency, like debugging printouts in high periodic tasks
+ * or low priority operations.
+ */
+class PeriodicOperationDivider {
+public:
+	/**
+	 * Initialize with the desired divider and specify whether the internal
+	 * counter will be reset automatically.
+	 * @param divider
+	 * @param resetAutomatically
+	 */
+	PeriodicOperationDivider(uint32_t divider, bool resetAutomatically = true);
+
+	/**
+	 * Check whether operation is necessary.
+	 * If an operation is necessary and the class has been
+	 * configured to be reset automatically, the counter will be reset.
+	 * If not, the counter will be incremented.
+	 * @return
+	 * -@c true if the counter is larger or equal to the divider
+	 * -@c false otherwise
+	 */
+	bool checkAndIncrement();
+
+	/**
+	 * Can be used to reset the counter to 0 manually.
+	 */
+	void resetCounter();
+	uint32_t getCounter() const;
+
+	/**
+	 * Can be used to set a new divider value.
+	 * @param newDivider
+	 */
+	void setDivider(uint32_t newDivider);
+	uint32_t getDivider() const;
+private:
+	bool resetAutomatically = true;
+	uint32_t counter = 0;
+	uint32_t divider = 0;
+};
+
+
+
+#endif /* FSFW_GLOBALFUNCTIONS_PERIODICOPERATIONDIVIDER_H_ */

osal/FreeRTOS/PeriodicTask.cpp

@@ -64,6 +64,11 @@ ReturnValue_t PeriodicTask::sleepFor(uint32_t ms) {
 void PeriodicTask::taskFunctionality() {
 	TickType_t xLastWakeTime;
 	const TickType_t xPeriod = pdMS_TO_TICKS(this->period * 1000.);
+	
+	for (auto const &object: objectList) {
+		object->initializeAfterTaskCreation();
+	}
+
 	/* The xLastWakeTime variable needs to be initialized with the current tick
 	 count. Note that this is the only time the variable is written to
 	 explicitly. After this assignment, xLastWakeTime is updated automatically

osal/FreeRTOS/PeriodicTask.h

@@ -1,11 +1,10 @@
-#ifndef FRAMEWORK_OSAL_FREERTOS_PERIODICTASK_H_
+#ifndef FSFW_OSAL_FREERTOS_PERIODICTASK_H_
-#define FRAMEWORK_OSAL_FREERTOS_PERIODICTASK_H_
+#define FSFW_OSAL_FREERTOS_PERIODICTASK_H_
 
+#include "FreeRTOSTaskIF.h"
 #include "../../objectmanager/ObjectManagerIF.h"
 #include "../../tasks/PeriodicTaskIF.h"
 #include "../../tasks/Typedef.h"
-#include "FreeRTOSTaskIF.h"
-
 
 #include <freertos/FreeRTOS.h>
 #include <freertos/task.h>
@@ -24,7 +23,6 @@ public:
 	/**
 	 * Keep in Mind that you need to call before this vTaskStartScheduler()!
 	 * A lot of task parameters are set in "FreeRTOSConfig.h".
-	 * TODO: why does this need to be called before vTaskStartScheduler?
 	 * @details
 	 * The class is initialized without allocated objects.
 	 * These need to be added with #addComponent.
@@ -125,4 +123,4 @@ protected:
 	void handleMissedDeadline();
 };
 
-#endif /* PERIODICTASK_H_ */
+#endif /* FSFW_OSAL_FREERTOS_PERIODICTASK_H_ */

osal/host/Clock.cpp

@@ -0,0 +1,227 @@
+#include "../../serviceinterface/ServiceInterfaceStream.h"
+#include "../../timemanager/Clock.h"
+
+#include <chrono>
+#if defined(WIN32)
+#include <windows.h>
+#elif defined(LINUX)
+#include <fstream>
+#endif
+
+uint16_t Clock::leapSeconds = 0;
+MutexIF* Clock::timeMutex = NULL;
+
+using SystemClock = std::chrono::system_clock;
+
+uint32_t Clock::getTicksPerSecond(void){
+	sif::warning << "Clock::getTicksPerSecond: not implemented yet" << std::endl;
+	return 0;
+	//return CLOCKS_PER_SEC;
+	//uint32_t ticks = sysconf(_SC_CLK_TCK);
+	//return ticks;
+}
+
+ReturnValue_t Clock::setClock(const TimeOfDay_t* time) {
+	// do some magic with chrono
+	sif::warning << "Clock::setClock: not implemented yet" << std::endl;
+	return HasReturnvaluesIF::RETURN_OK;
+}
+
+ReturnValue_t Clock::setClock(const timeval* time) {
+	// do some magic with chrono
+#if defined(WIN32)
+	return HasReturnvaluesIF::RETURN_OK;
+#elif defined(LINUX)
+	return HasReturnvaluesIF::RETURN_OK;
+#else
+
+#endif
+	sif::warning << "Clock::getUptime: Not implemented for found OS" << std::endl;
+	return HasReturnvaluesIF::RETURN_FAILED;
+}
+
+ReturnValue_t Clock::getClock_timeval(timeval* time) {
+#if defined(WIN32)
+	auto now  = std::chrono::system_clock::now();
+	auto secondsChrono = std::chrono::time_point_cast<std::chrono::seconds>(now);
+	auto epoch = now.time_since_epoch();
+	time->tv_sec = std::chrono::duration_cast<std::chrono::seconds>(epoch).count();
+	auto fraction = now - secondsChrono;
+	time->tv_usec = std::chrono::duration_cast<std::chrono::microseconds>(
+	        fraction).count();
+	return HasReturnvaluesIF::RETURN_OK;
+#elif defined(LINUX)
+	timespec timeUnix;
+	int status = clock_gettime(CLOCK_REALTIME,&timeUnix);
+	if(status!=0){
+		return HasReturnvaluesIF::RETURN_FAILED;
+	}
+	time->tv_sec = timeUnix.tv_sec;
+	time->tv_usec = timeUnix.tv_nsec / 1000.0;
+	return HasReturnvaluesIF::RETURN_OK;
+#else
+	sif::warning << "Clock::getUptime: Not implemented for found OS" << std::endl;
+	return HasReturnvaluesIF::RETURN_FAILED;
+#endif
+
+}
+
+ReturnValue_t Clock::getClock_usecs(uint64_t* time) {
+	// do some magic with chrono
+	sif::warning << "Clock::gerClock_usecs: not implemented yet" << std::endl;
+	return HasReturnvaluesIF::RETURN_OK;
+}
+
+timeval Clock::getUptime() {
+	timeval timeval;
+#if defined(WIN32)
+	auto uptime  = std::chrono::milliseconds(GetTickCount64());
+	auto secondsChrono = std::chrono::duration_cast<std::chrono::seconds>(uptime);
+	timeval.tv_sec = secondsChrono.count();
+	auto fraction = uptime - secondsChrono;
+	timeval.tv_usec = std::chrono::duration_cast<std::chrono::microseconds>(
+	            fraction).count();
+#elif defined(LINUX)
+	double uptimeSeconds;
+	if (std::ifstream("/proc/uptime", std::ios::in) >> uptimeSeconds)
+	{
+		// value is rounded down automatically
+		timeval.tv_sec = uptimeSeconds;
+		timeval.tv_usec = uptimeSeconds *(double) 1e6 - (timeval.tv_sec *1e6);
+	}
+#else
+	sif::warning << "Clock::getUptime: Not implemented for found OS" << std::endl;
+#endif
+	return timeval;
+}
+
+ReturnValue_t Clock::getUptime(timeval* uptime) {
+	*uptime = getUptime();
+	return HasReturnvaluesIF::RETURN_OK;
+}
+
+ReturnValue_t Clock::getUptime(uint32_t* uptimeMs) {
+	timeval uptime = getUptime();
+	*uptimeMs = uptime.tv_sec * 1000 + uptime.tv_usec / 1000;
+	return HasReturnvaluesIF::RETURN_OK;
+}
+
+
+ReturnValue_t Clock::getDateAndTime(TimeOfDay_t* time) {
+	// do some magic with chrono (C++20!)
+	// Right now, the library doesn't have the new features yet.
+	// so we work around that for now.
+	auto now = SystemClock::now();
+	auto seconds = std::chrono::time_point_cast<std::chrono::seconds>(now);
+	auto fraction = now - seconds;
+	time_t tt = SystemClock::to_time_t(now);
+	struct tm* timeInfo;
+	timeInfo = gmtime(&tt);
+	time->year = timeInfo->tm_year + 1900;
+	time->month = timeInfo->tm_mon+1;
+	time->day = timeInfo->tm_mday;
+	time->hour = timeInfo->tm_hour;
+	time->minute = timeInfo->tm_min;
+	time->second = timeInfo->tm_sec;
+	auto usecond = std::chrono::duration_cast<std::chrono::microseconds>(fraction);
+	time->usecond = usecond.count();
+
+	//sif::warning << "Clock::getDateAndTime: not implemented yet" << std::endl;
+	return HasReturnvaluesIF::RETURN_OK;
+}
+
+ReturnValue_t Clock::convertTimeOfDayToTimeval(const TimeOfDay_t* from,
+		timeval* to) {
+	struct tm time_tm;
+
+	time_tm.tm_year = from->year - 1900;
+	time_tm.tm_mon = from->month - 1;
+	time_tm.tm_mday = from->day;
+
+	time_tm.tm_hour = from->hour;
+	time_tm.tm_min = from->minute;
+	time_tm.tm_sec = from->second;
+
+	time_t seconds = mktime(&time_tm);
+
+	to->tv_sec = seconds;
+	to->tv_usec = from->usecond;
+	//Fails in 2038..
+	return HasReturnvaluesIF::RETURN_OK;
+	sif::warning << "Clock::convertTimeBla: not implemented yet" << std::endl;
+	return HasReturnvaluesIF::RETURN_OK;
+}
+
+ReturnValue_t Clock::convertTimevalToJD2000(timeval time, double* JD2000) {
+	*JD2000 = (time.tv_sec - 946728000. + time.tv_usec / 1000000.) / 24.
+			/ 3600.;
+	return HasReturnvaluesIF::RETURN_OK;
+}
+
+ReturnValue_t Clock::convertUTCToTT(timeval utc, timeval* tt) {
+	//SHOULDDO: works not for dates in the past (might have less leap seconds)
+	if (timeMutex == NULL) {
+		return HasReturnvaluesIF::RETURN_FAILED;
+	}
+
+	uint16_t leapSeconds;
+	ReturnValue_t result = getLeapSeconds(&leapSeconds);
+	if (result != HasReturnvaluesIF::RETURN_OK) {
+		return result;
+	}
+	timeval leapSeconds_timeval = { 0, 0 };
+	leapSeconds_timeval.tv_sec = leapSeconds;
+
+	//initial offset between UTC and TAI
+	timeval UTCtoTAI1972 = { 10, 0 };
+
+	timeval TAItoTT = { 32, 184000 };
+
+	*tt = utc + leapSeconds_timeval + UTCtoTAI1972 + TAItoTT;
+
+	return HasReturnvaluesIF::RETURN_OK;
+}
+
+ReturnValue_t Clock::setLeapSeconds(const uint16_t leapSeconds_) {
+	if(checkOrCreateClockMutex()!=HasReturnvaluesIF::RETURN_OK){
+		return HasReturnvaluesIF::RETURN_FAILED;
+	}
+	ReturnValue_t result = timeMutex->lockMutex(MutexIF::BLOCKING);
+	if (result != HasReturnvaluesIF::RETURN_OK) {
+		return result;
+	}
+
+	leapSeconds = leapSeconds_;
+
+	result = timeMutex->unlockMutex();
+	return result;
+}
+
+ReturnValue_t Clock::getLeapSeconds(uint16_t* leapSeconds_) {
+	if(timeMutex == nullptr){
+		return HasReturnvaluesIF::RETURN_FAILED;
+	}
+	ReturnValue_t result = timeMutex->lockMutex(MutexIF::BLOCKING);
+	if (result != HasReturnvaluesIF::RETURN_OK) {
+		return result;
+	}
+
+	*leapSeconds_ = leapSeconds;
+
+	result = timeMutex->unlockMutex();
+	return result;
+}
+
+ReturnValue_t Clock::checkOrCreateClockMutex(){
+	if(timeMutex == nullptr){
+		MutexFactory* mutexFactory = MutexFactory::instance();
+		if (mutexFactory == nullptr) {
+			return HasReturnvaluesIF::RETURN_FAILED;
+		}
+		timeMutex = mutexFactory->createMutex();
+		if (timeMutex == nullptr) {
+			return HasReturnvaluesIF::RETURN_FAILED;
+		}
+	}
+	return HasReturnvaluesIF::RETURN_OK;
+}

osal/host/FixedTimeslotTask.cpp

@@ -0,0 +1,197 @@
+#include "../../osal/host/FixedTimeslotTask.h"
+
+#include "../../ipc/MutexFactory.h"
+#include "../../osal/host/Mutex.h"
+#include "../../osal/host/FixedTimeslotTask.h"
+
+#include "../../serviceinterface/ServiceInterfaceStream.h"
+#include "../../tasks/ExecutableObjectIF.h"
+
+#include <thread>
+#include <chrono>
+
+#if defined(WIN32)
+#include <windows.h>
+#elif defined(LINUX)
+#include <pthread.h>
+#endif
+
+FixedTimeslotTask::FixedTimeslotTask(const char *name, TaskPriority setPriority,
+        TaskStackSize setStack, TaskPeriod setPeriod,
+        void (*setDeadlineMissedFunc)()) :
+        started(false), pollingSeqTable(setPeriod*1000), taskName(name),
+        period(setPeriod), deadlineMissedFunc(setDeadlineMissedFunc) {
+    // It is propably possible to set task priorities by using the native
+    // task handles for Windows / Linux
+    mainThread = std::thread(&FixedTimeslotTask::taskEntryPoint, this, this);
+#if defined(WIN32)
+    /* List of possible priority classes:
+     * https://docs.microsoft.com/en-us/windows/win32/api/processthreadsapi/
+     * nf-processthreadsapi-setpriorityclass
+     * And respective thread priority numbers:
+     * https://docs.microsoft.com/en-us/windows/
+     * win32/procthread/scheduling-priorities */
+    int result = SetPriorityClass(
+            reinterpret_cast<HANDLE>(mainThread.native_handle()),
+            ABOVE_NORMAL_PRIORITY_CLASS);
+    if(result != 0) {
+        sif::error << "FixedTimeslotTask: Windows SetPriorityClass failed with code "
+                << GetLastError() << std::endl;
+    }
+    result = SetThreadPriority(
+            reinterpret_cast<HANDLE>(mainThread.native_handle()),
+            THREAD_PRIORITY_NORMAL);
+    if(result != 0) {
+        sif::error << "FixedTimeslotTask: Windows SetPriorityClass failed with code "
+                << GetLastError() << std::endl;
+    }
+#elif defined(LINUX)
+    // we can just copy and paste the code from linux here.
+#endif
+}
+
+FixedTimeslotTask::~FixedTimeslotTask(void) {
+    //Do not delete objects, we were responsible for ptrs only.
+    terminateThread = true;
+    if(mainThread.joinable()) {
+        mainThread.join();
+    }
+    delete this;
+}
+
+void FixedTimeslotTask::taskEntryPoint(void* argument) {
+    FixedTimeslotTask *originalTask(reinterpret_cast<FixedTimeslotTask*>(argument));
+
+    if (not originalTask->started) {
+        // we have to suspend/block here until the task is started.
+        // if semaphores are implemented, use them here.
+        std::unique_lock<std::mutex> lock(initMutex);
+        initCondition.wait(lock);
+    }
+
+    this->taskFunctionality();
+    sif::debug << "FixedTimeslotTask::taskEntryPoint: "
+            "Returned from taskFunctionality." << std::endl;
+}
+
+ReturnValue_t FixedTimeslotTask::startTask() {
+    started = true;
+
+    // Notify task to start.
+    std::lock_guard<std::mutex> lock(initMutex);
+    initCondition.notify_one();
+
+    return HasReturnvaluesIF::RETURN_OK;
+}
+
+ReturnValue_t FixedTimeslotTask::sleepFor(uint32_t ms) {
+    std::this_thread::sleep_for(std::chrono::milliseconds(ms));
+    return HasReturnvaluesIF::RETURN_OK;
+}
+
+void FixedTimeslotTask::taskFunctionality() {
+    pollingSeqTable.intializeSequenceAfterTaskCreation();
+
+    // A local iterator for the Polling Sequence Table is created to
+    // find the start time for the first entry.
+    auto slotListIter = pollingSeqTable.current;
+
+    // Get start time for first entry.
+    chron_ms interval(slotListIter->pollingTimeMs);
+    auto currentStartTime {
+            std::chrono::duration_cast<chron_ms>(
+            std::chrono::system_clock::now().time_since_epoch())
+    };
+    if(interval.count() > 0) {
+        delayForInterval(&currentStartTime, interval);
+    }
+
+    /* Enter the loop that defines the task behavior. */
+    for (;;) {
+        if(terminateThread.load()) {
+            break;
+        }
+        //The component for this slot is executed and the next one is chosen.
+        this->pollingSeqTable.executeAndAdvance();
+        if (not pollingSeqTable.slotFollowsImmediately()) {
+            // we need to wait before executing the current slot
+            //this gives us the time to wait:
+            interval = chron_ms(this->pollingSeqTable.getIntervalToPreviousSlotMs());
+            delayForInterval(&currentStartTime, interval);
+            //TODO deadline missed check
+        }
+    }
+}
+
+ReturnValue_t FixedTimeslotTask::addSlot(object_id_t componentId,
+        uint32_t slotTimeMs, int8_t executionStep) {
+    ExecutableObjectIF* executableObject = objectManager->
+            get<ExecutableObjectIF>(componentId);
+    if (executableObject != nullptr) {
+        pollingSeqTable.addSlot(componentId, slotTimeMs, executionStep,
+                executableObject, this);
+        return HasReturnvaluesIF::RETURN_OK;
+    }
+
+    sif::error << "Component " << std::hex << componentId <<
+            " not found, not adding it to pst" << std::endl;
+    return HasReturnvaluesIF::RETURN_FAILED;
+}
+
+ReturnValue_t FixedTimeslotTask::checkSequence() const {
+    return pollingSeqTable.checkSequence();
+}
+
+uint32_t FixedTimeslotTask::getPeriodMs() const {
+    return period * 1000;
+}
+
+bool FixedTimeslotTask::delayForInterval(chron_ms * previousWakeTimeMs,
+        const chron_ms interval) {
+    bool shouldDelay = false;
+    //Get current wakeup time
+    auto currentStartTime =
+            std::chrono::duration_cast<chron_ms>(
+            std::chrono::system_clock::now().time_since_epoch());
+    /* Generate the tick time at which the task wants to wake. */
+    auto nextTimeToWake_ms = (*previousWakeTimeMs) + interval;
+
+    if (currentStartTime < *previousWakeTimeMs) {
+        /* The tick count has overflowed since this function was
+         lasted called.  In this case the only time we should ever
+         actually delay is if the wake time has also    overflowed,
+         and the wake time is greater than the tick time.  When this
+         is the case it is as if neither time had overflowed. */
+        if ((nextTimeToWake_ms < *previousWakeTimeMs)
+                && (nextTimeToWake_ms > currentStartTime)) {
+            shouldDelay = true;
+        }
+    } else {
+        /* The tick time has not overflowed.  In this case we will
+         delay if either the wake time has overflowed, and/or the
+         tick time is less than the wake time. */
+        if ((nextTimeToWake_ms < *previousWakeTimeMs)
+                || (nextTimeToWake_ms >  currentStartTime)) {
+            shouldDelay = true;
+        }
+    }
+
+    /* Update the wake time ready for the next call. */
+
+    (*previousWakeTimeMs) =  nextTimeToWake_ms;
+
+    if (shouldDelay) {
+        auto sleepTime = std::chrono::duration_cast<chron_ms>(
+                nextTimeToWake_ms - currentStartTime);
+        std::this_thread::sleep_for(sleepTime);
+        return true;
+    }
+    //We are shifting the time in case the deadline was missed like rtems
+    (*previousWakeTimeMs) = currentStartTime;
+    return false;
+
+}
+
+
+
+

osal/host/FixedTimeslotTask.h

@@ -0,0 +1,130 @@
+#ifndef FRAMEWORK_OSAL_HOST_FIXEDTIMESLOTTASK_H_
+#define FRAMEWORK_OSAL_HOST_FIXEDTIMESLOTTASK_H_
+
+#include "../../objectmanager/ObjectManagerIF.h"
+#include "../../tasks/FixedSlotSequence.h"
+#include "../../tasks/FixedTimeslotTaskIF.h"
+#include "../../tasks/Typedef.h"
+
+#include <vector>
+#include <thread>
+#include <condition_variable>
+#include <atomic>
+
+class ExecutableObjectIF;
+
+/**
+ * @brief   This class represents a task for periodic activities with multiple
+ *          steps and strict timeslot requirements for these steps.
+ * @details
+ * @ingroup task_handling
+ */
+class FixedTimeslotTask: public FixedTimeslotTaskIF {
+public:
+    /**
+     * @brief   Standard constructor of the class.
+     * @details
+     * The class is initialized without allocated objects. These need to be
+     * added with #addComponent.
+     * @param priority
+     * @param stack_size
+     * @param setPeriod
+     * @param setDeadlineMissedFunc
+     * The function pointer to the deadline missed function that shall be
+     * assigned.
+     */
+    FixedTimeslotTask(const char *name, TaskPriority setPriority,
+            TaskStackSize setStack, TaskPeriod setPeriod,
+            void (*setDeadlineMissedFunc)());
+    /**
+     * @brief   Currently, the executed object's lifetime is not coupled with
+     *          the task object's lifetime, so the destructor is empty.
+     */
+    virtual ~FixedTimeslotTask(void);
+
+    /**
+     * @brief   The method to start the task.
+     * @details The method starts the task with the respective system call.
+     *          Entry point is the taskEntryPoint method described below.
+     *          The address of the task object is passed as an argument
+     *          to the system call.
+     */
+    ReturnValue_t startTask(void);
+
+    /**
+     * Add timeslot to the polling sequence table.
+     * @param componentId
+     * @param slotTimeMs
+     * @param executionStep
+     * @return
+     */
+    ReturnValue_t addSlot(object_id_t componentId,
+                   uint32_t slotTimeMs, int8_t executionStep);
+
+    ReturnValue_t checkSequence() const override;
+
+    uint32_t getPeriodMs() const;
+
+    ReturnValue_t sleepFor(uint32_t ms);
+
+protected:
+    using chron_ms = std::chrono::milliseconds;
+
+    bool started;
+    //!< Typedef for the List of objects.
+    typedef std::vector<ExecutableObjectIF*> ObjectList;
+    std::thread mainThread;
+    std::atomic<bool> terminateThread = false;
+
+    //! Polling sequence table which contains the object to execute
+    //! and information like the timeslots and the passed execution step.
+    FixedSlotSequence pollingSeqTable;
+
+    std::condition_variable initCondition;
+    std::mutex initMutex;
+    std::string taskName;
+    /**
+     * @brief   The period of the task.
+     * @details
+     * The period determines the frequency of the task's execution.
+     * It is expressed in clock ticks.
+     */
+    TaskPeriod period;
+
+    /**
+     * @brief   The pointer to the deadline-missed function.
+     * @details
+     * This pointer stores the function that is executed if the task's deadline
+     * is missed. So, each may react individually on a timing failure.
+     * The pointer may be NULL, then nothing happens on missing the deadline.
+     * The deadline is equal to the next execution of the periodic task.
+     */
+    void (*deadlineMissedFunc)(void);
+    /**
+     * @brief   This is the function executed in the new task's context.
+     * @details
+     * It converts the argument back to the thread object type and copies the
+     * class instance to the task context.
+     * The taskFunctionality method is called afterwards.
+     * @param   A pointer to the task object itself is passed as argument.
+     */
+
+    void taskEntryPoint(void* argument);
+    /**
+     * @brief   The function containing the actual functionality of the task.
+     * @details
+     * The method sets and starts the task's period, then enters a loop that is
+     * repeated as long as the isRunning attribute is true. Within the loop,
+     * all performOperation methods of the added objects are called. Afterwards
+     * the checkAndRestartPeriod system call blocks the task until the next
+     *  period. On missing the deadline, the deadlineMissedFunction is executed.
+     */
+    void taskFunctionality(void);
+
+    bool delayForInterval(chron_ms * previousWakeTimeMs,
+            const chron_ms interval);
+};
+
+
+
+#endif /* FRAMEWORK_OSAL_HOST_FIXEDTIMESLOTTASK_H_ */

osal/host/MessageQueue.cpp

@@ -0,0 +1,159 @@
+#include "MessageQueue.h"
+#include "QueueMapManager.h"
+
+#include "../../serviceinterface/ServiceInterfaceStream.h"
+#include "../../ipc/MutexFactory.h"
+#include "../../ipc/MutexHelper.h"
+
+MessageQueue::MessageQueue(size_t messageDepth, size_t maxMessageSize):
+		messageSize(maxMessageSize), messageDepth(messageDepth) {
+	queueLock = MutexFactory::instance()->createMutex();
+	auto result = QueueMapManager::instance()->addMessageQueue(this, &mqId);
+	if(result != HasReturnvaluesIF::RETURN_OK) {
+		sif::error << "MessageQueue::MessageQueue:"
+		        << " Could not be created" << std::endl;
+	}
+}
+
+MessageQueue::~MessageQueue() {
+	MutexFactory::instance()->deleteMutex(queueLock);
+}
+
+ReturnValue_t MessageQueue::sendMessage(MessageQueueId_t sendTo,
+		MessageQueueMessageIF* message, bool ignoreFault) {
+	return sendMessageFrom(sendTo, message, this->getId(), ignoreFault);
+}
+
+ReturnValue_t MessageQueue::sendToDefault(MessageQueueMessageIF* message) {
+	return sendToDefaultFrom(message, this->getId());
+}
+
+ReturnValue_t MessageQueue::sendToDefaultFrom(MessageQueueMessageIF* message,
+		MessageQueueId_t sentFrom, bool ignoreFault) {
+	return sendMessageFrom(defaultDestination,message,sentFrom,ignoreFault);
+}
+
+ReturnValue_t MessageQueue::reply(MessageQueueMessageIF* message) {
+	if (this->lastPartner != 0) {
+		return sendMessageFrom(this->lastPartner, message, this->getId());
+	} else {
+		return MessageQueueIF::NO_REPLY_PARTNER;
+	}
+}
+
+ReturnValue_t MessageQueue::sendMessageFrom(MessageQueueId_t sendTo,
+		MessageQueueMessageIF* message, MessageQueueId_t sentFrom,
+		bool ignoreFault) {
+	return sendMessageFromMessageQueue(sendTo, message, sentFrom,
+			ignoreFault);
+}
+
+ReturnValue_t MessageQueue::receiveMessage(MessageQueueMessageIF* message,
+		MessageQueueId_t* receivedFrom) {
+	ReturnValue_t status = this->receiveMessage(message);
+	if(status == HasReturnvaluesIF::RETURN_OK) {
+		*receivedFrom = this->lastPartner;
+	}
+	return status;
+}
+
+ReturnValue_t MessageQueue::receiveMessage(MessageQueueMessageIF* message) {
+	if(messageQueue.empty()) {
+		return MessageQueueIF::EMPTY;
+	}
+	// not sure this will work..
+	//*message = std::move(messageQueue.front());
+	MutexHelper mutexLock(queueLock, MutexIF::TimeoutType::WAITING, 20);
+	MessageQueueMessage* currentMessage = &messageQueue.front();
+	std::copy(currentMessage->getBuffer(),
+			currentMessage->getBuffer() + messageSize, message->getBuffer());
+	messageQueue.pop();
+	// The last partner is the first uint32_t field in the message
+	this->lastPartner = message->getSender();
+	return HasReturnvaluesIF::RETURN_OK;
+}
+
+MessageQueueId_t MessageQueue::getLastPartner() const {
+	return lastPartner;
+}
+
+ReturnValue_t MessageQueue::flush(uint32_t* count) {
+	*count = messageQueue.size();
+	// Clears the queue.
+	messageQueue = std::queue<MessageQueueMessage>();
+	return HasReturnvaluesIF::RETURN_OK;
+}
+
+MessageQueueId_t MessageQueue::getId() const {
+	return mqId;
+}
+
+void MessageQueue::setDefaultDestination(MessageQueueId_t defaultDestination) {
+	defaultDestinationSet = true;
+	this->defaultDestination = defaultDestination;
+}
+
+MessageQueueId_t MessageQueue::getDefaultDestination() const {
+	return defaultDestination;
+}
+
+bool MessageQueue::isDefaultDestinationSet() const {
+	return defaultDestinationSet;
+}
+
+
+// static core function to send messages.
+ReturnValue_t MessageQueue::sendMessageFromMessageQueue(MessageQueueId_t sendTo,
+        MessageQueueMessageIF* message, MessageQueueId_t sentFrom,
+        bool ignoreFault) {
+	if(message->getMessageSize() > message->getMaximumMessageSize()) {
+		// Actually, this should never happen or an error will be emitted
+		// in MessageQueueMessage.
+		// But I will still return a failure here.
+		return HasReturnvaluesIF::RETURN_FAILED;
+	}
+	MessageQueue* targetQueue = dynamic_cast<MessageQueue*>(
+			QueueMapManager::instance()->getMessageQueue(sendTo));
+	if(targetQueue == nullptr) {
+		if(not ignoreFault) {
+			InternalErrorReporterIF* internalErrorReporter =
+					objectManager->get<InternalErrorReporterIF>(
+							objects::INTERNAL_ERROR_REPORTER);
+			if (internalErrorReporter != nullptr) {
+				internalErrorReporter->queueMessageNotSent();
+			}
+		}
+		// TODO: Better returnvalue
+		return HasReturnvaluesIF::RETURN_FAILED;
+	}
+
+	if(targetQueue->messageQueue.size() < targetQueue->messageDepth) {
+		MutexHelper mutexLock(targetQueue->queueLock,
+		        MutexIF::TimeoutType::WAITING, 20);
+		// not ideal, works for now though.
+		MessageQueueMessage* mqmMessage =
+				dynamic_cast<MessageQueueMessage*>(message);
+		if(message != nullptr) {
+			targetQueue->messageQueue.push(*mqmMessage);
+		}
+		else {
+			sif::error << "MessageQueue::sendMessageFromMessageQueue: Message"
+					"is not MessageQueueMessage!" << std::endl;
+		}
+
+	}
+	else {
+		return MessageQueueIF::FULL;
+	}
+    message->setSender(sentFrom);
+    return HasReturnvaluesIF::RETURN_OK;
+}
+
+ReturnValue_t MessageQueue::lockQueue(MutexIF::TimeoutType timeoutType,
+        dur_millis_t lockTimeout) {
+	return queueLock->lockMutex(timeoutType, lockTimeout);
+}
+
+ReturnValue_t MessageQueue::unlockQueue() {
+	return queueLock->unlockMutex();
+}

osal/host/MessageQueue.h

@@ -0,0 +1,231 @@
+#ifndef FRAMEWORK_OSAL_HOST_MESSAGEQUEUE_H_
+#define FRAMEWORK_OSAL_HOST_MESSAGEQUEUE_H_
+
+#include "../../internalError/InternalErrorReporterIF.h"
+#include "../../ipc/MessageQueueIF.h"
+#include "../../ipc/MessageQueueMessage.h"
+#include "../../ipc/MutexIF.h"
+#include "../../timemanager/Clock.h"
+
+#include <queue>
+#include <memory>
+
+/**
+ * @brief		This class manages sending and receiving of
+ * 				message queue messages.
+ * @details
+ * Message queues are used to pass asynchronous messages between processes.
+ * They work like post boxes, where all incoming messages are stored in FIFO
+ * order. This class creates a new receiving queue and provides methods to fetch
+ * received messages. Being a child of MessageQueueSender, this class also
+ * provides methods to send a message to a user-defined or a default destination.
+ * In addition it also provides a reply method to answer to the queue it
+ * received its last message from.
+ *
+ * The MessageQueue should be used as "post box" for a single owning object.
+ * So all message queue communication is "n-to-one".
+ * For creating the queue, as well as sending and receiving messages, the class
+ * makes use of the operating system calls provided.
+ *
+ * Please keep in mind that FreeRTOS offers different calls for message queue
+ * operations if called from an ISR.
+ * For now, the system context needs to be switched manually.
+ * @ingroup osal
+ * @ingroup message_queue
+ */
+class MessageQueue : public MessageQueueIF {
+	friend class MessageQueueSenderIF;
+public:
+	/**
+	 * @brief	The constructor initializes and configures the message queue.
+	 * @details
+	 * By making use of the according operating system call, a message queue is
+	 * created and initialized. The message depth - the maximum number of
+	 * messages to be buffered - may be set with the help of a parameter,
+	 * whereas the message size is automatically set to the maximum message
+	 * queue message size. The operating system sets the message queue id, or
+	 * in case of failure, it is set to zero.
+	 * @param message_depth
+	 * The number of messages to be buffered before passing an error to the
+	 * sender. Default is three.
+	 * @param max_message_size
+	 * With this parameter, the maximum message size can be adjusted.
+	 * This should be left default.
+	 */
+	MessageQueue(size_t messageDepth = 3,
+			size_t maxMessageSize = MessageQueueMessage::MAX_MESSAGE_SIZE);
+
+	/** Copying message queues forbidden */
+	MessageQueue(const MessageQueue&) = delete;
+	MessageQueue& operator=(const MessageQueue&) = delete;
+
+	/**
+	 * @brief	The destructor deletes the formerly created message queue.
+	 * @details	This is accomplished by using the delete call provided
+	 * 			by the operating system.
+	 */
+	virtual ~MessageQueue();
+
+	/**
+	 * @brief	This operation sends a message to the given destination.
+	 * @details	It directly uses the sendMessage call of the MessageQueueSender
+	 * parent, but passes its queue id as "sentFrom" parameter.
+	 * @param sendTo	This parameter specifies the message queue id of the
+	 *  destination message queue.
+	 * @param message	A pointer to a previously created message, which is sent.
+	 * @param ignoreFault If set to true, the internal software fault counter
+	 * is not incremented if queue is full.
+	 */
+	ReturnValue_t sendMessage(MessageQueueId_t sendTo,
+			MessageQueueMessageIF* message, bool ignoreFault = false) override;
+	/**
+	 * @brief	This operation sends a message to the default destination.
+	 * @details	As in the sendMessage method, this function uses the
+	 * sendToDefault call of the MessageQueueSender parent class and adds its
+	 * queue id as "sentFrom" information.
+	 * @param message	A pointer to a previously created message, which is sent.
+	 */
+	ReturnValue_t sendToDefault(MessageQueueMessageIF* message) override;
+	/**
+	 * @brief	This operation sends a message to the last communication partner.
+	 * @details	This operation simplifies answering an incoming message by using
+	 * the stored lastPartner information as destination. If there was no
+	 * message received yet (i.e. lastPartner is zero), an error code is returned.
+	 * @param message	A pointer to a previously created message, which is sent.
+	 */
+	ReturnValue_t reply(MessageQueueMessageIF* message) override;
+
+	/**
+	 * @brief	With the sendMessage call, a queue message is sent to a
+	 * 			receiving queue.
+	 * @details
+	 * This method takes the message provided, adds the sentFrom information and
+	 * passes it on to the destination provided with an operating system call.
+	 *  The OS's return value is returned.
+	 * @param sendTo	This parameter specifies the message queue id to send
+	 * the message to.
+	 * @param message	This is a pointer to a previously created message,
+	 * which is sent.
+	 * @param sentFrom	The sentFrom information can be set to inject the
+	 * sender's queue id into the message. This variable is set to zero by
+	 * default.
+	 * @param ignoreFault If set to true, the internal software fault counter
+	 * is not incremented if queue is full.
+	 */
+	virtual ReturnValue_t sendMessageFrom( MessageQueueId_t sendTo,
+			MessageQueueMessageIF* message, MessageQueueId_t sentFrom = NO_QUEUE,
+			bool ignoreFault = false) override;
+
+	/**
+	 * @brief	The sendToDefault method sends a queue message to the default
+	 * 			destination.
+	 * @details
+	 * In all other aspects, it works identical to the sendMessage method.
+	 * @param message	This is a pointer to a previously created message,
+	 * which is sent.
+	 * @param sentFrom	The sentFrom information can be set to inject the
+	 * sender's queue id into the message. This variable is set to zero by
+	 * default.
+	 */
+	virtual ReturnValue_t sendToDefaultFrom( MessageQueueMessageIF* message,
+			MessageQueueId_t sentFrom = NO_QUEUE,
+			bool ignoreFault = false) override;
+
+	/**
+	 * @brief	This function reads available messages from the message queue
+	 * 			and returns the sender.
+	 * @details
+	 * It works identically to the other receiveMessage call, but in  addition
+	 * returns the sender's queue id.
+	 * @param message	A pointer to a message in which the received data is stored.
+	 * @param receivedFrom	A pointer to a queue id in which the sender's id is stored.
+	 */
+	ReturnValue_t receiveMessage(MessageQueueMessageIF* message,
+			MessageQueueId_t *receivedFrom) override;
+
+	/**
+	 * @brief	This function reads available messages from the message queue.
+	 * @details
+	 * If data is available it is stored in the passed message pointer.
+	 * The message's original content is overwritten and the sendFrom
+	 * information is stored in the lastPartner attribute. Else, the lastPartner
+	 * information remains untouched, the message's content is cleared and the
+	 * function returns immediately.
+	 * @param message	A pointer to a message in which the received data is stored.
+	 */
+	ReturnValue_t receiveMessage(MessageQueueMessageIF* message) override;
+	/**
+	 * Deletes all pending messages in the queue.
+	 * @param count The number of flushed messages.
+	 * @return RETURN_OK on success.
+	 */
+	ReturnValue_t flush(uint32_t* count) override;
+	/**
+	 * @brief	This method returns the message queue id of the last
+	 * 			communication partner.
+	 */
+	MessageQueueId_t getLastPartner() const override;
+	/**
+	 * @brief	This method returns the message queue id of this class's
+	 * 			message queue.
+	 */
+	MessageQueueId_t getId() const override;
+
+	/**
+	 * @brief	This method is a simple setter for the default destination.
+	 */
+	void setDefaultDestination(MessageQueueId_t defaultDestination) override;
+	/**
+	 * @brief	This method is a simple getter for the default destination.
+	 */
+	MessageQueueId_t getDefaultDestination() const override;
+
+	bool isDefaultDestinationSet() const override;
+
+	ReturnValue_t lockQueue(MutexIF::TimeoutType timeoutType,
+	        dur_millis_t lockTimeout);
+	ReturnValue_t unlockQueue();
+protected:
+	/**
+	 * @brief 	Implementation to be called from any send Call within
+	 * 			MessageQueue and MessageQueueSenderIF.
+	 * @details
+	 * This method takes the message provided, adds the sentFrom information and
+	 * passes it on to the destination provided with an operating system call.
+	 * The OS's return value is returned.
+	 * @param sendTo
+	 * This parameter specifies the message queue id to send the message to.
+	 * @param message
+	 * This is a pointer to a previously created message, which is sent.
+	 * @param sentFrom
+	 * The sentFrom information can be set to inject the sender's queue id into
+	 * the message. This variable is set to zero by default.
+	 * @param ignoreFault
+	 * If set to true, the internal software fault counter  is not incremented
+	 * if queue is full.
+	 * @param context Specify whether call is made from task or from an ISR.
+	 */
+	static ReturnValue_t sendMessageFromMessageQueue(MessageQueueId_t sendTo,
+			MessageQueueMessageIF* message, MessageQueueId_t sentFrom = NO_QUEUE,
+			bool ignoreFault=false);
+
+	//static ReturnValue_t handleSendResult(BaseType_t result, bool ignoreFault);
+
+private:
+	std::queue<MessageQueueMessage> messageQueue;
+	/**
+	 * @brief	The class stores the queue id it got assigned.
+	 * 			If initialization fails, the queue id is set to zero.
+	 */
+	MessageQueueId_t mqId = 0;
+	size_t messageSize = 0;
+	size_t messageDepth = 0;
+
+	MutexIF* queueLock;
+
+	bool defaultDestinationSet = false;
+	MessageQueueId_t defaultDestination = 0;
+	MessageQueueId_t lastPartner = 0;
+};
+
+#endif /* FRAMEWORK_OSAL_HOST_MESSAGEQUEUE_H_ */

osal/host/Mutex.cpp

@@ -0,0 +1,39 @@
+#include "Mutex.h"
+#include "../../serviceinterface/ServiceInterfaceStream.h"
+
+Mutex::Mutex() {}
+
+ReturnValue_t Mutex::lockMutex(TimeoutType timeoutType, uint32_t timeoutMs) {
+	if(timeoutMs == MutexIF::BLOCKING) {
+		mutex.lock();
+		locked = true;
+		return HasReturnvaluesIF::RETURN_OK;
+	}
+	else if(timeoutMs == MutexIF::POLLING) {
+		if(mutex.try_lock()) {
+			locked = true;
+			return HasReturnvaluesIF::RETURN_OK;
+		}
+	}
+	else if(timeoutMs > MutexIF::POLLING){
+		auto chronoMs = std::chrono::milliseconds(timeoutMs);
+		if(mutex.try_lock_for(chronoMs)) {
+			locked = true;
+			return HasReturnvaluesIF::RETURN_OK;
+		}
+	}
+	return MutexIF::MUTEX_TIMEOUT;
+}
+
+ReturnValue_t Mutex::unlockMutex() {
+	if(not locked) {
+		return MutexIF::CURR_THREAD_DOES_NOT_OWN_MUTEX;
+	}
+	mutex.unlock();
+	locked = false;
+	return HasReturnvaluesIF::RETURN_OK;
+}
+
+std::timed_mutex* Mutex::getMutexHandle() {
+	return &mutex;
+}

osal/host/Mutex.h

@@ -0,0 +1,29 @@
+#ifndef FSFW_OSAL_HOSTED_MUTEX_H_
+#define FSFW_OSAL_HOSTED_MUTEX_H_
+
+#include "../../ipc/MutexIF.h"
+
+#include <mutex>
+
+/**
+ * @brief OS component to implement MUTual EXclusion
+ *
+ * @details
+ * Mutexes are binary semaphores which include a priority inheritance mechanism.
+ * Documentation: https://www.freertos.org/Real-time-embedded-RTOS-mutexes.html
+ * @ingroup osal
+ */
+class Mutex : public MutexIF {
+public:
+	Mutex();
+	ReturnValue_t lockMutex(TimeoutType timeoutType =
+            TimeoutType::BLOCKING, uint32_t timeoutMs = 0) override;
+	ReturnValue_t unlockMutex() override;
+
+	std::timed_mutex* getMutexHandle();
+private:
+	bool locked = false;
+	std::timed_mutex mutex;
+};
+
+#endif /* FSFW_OSAL_HOSTED_MUTEX_H_ */

osal/host/MutexFactory.cpp

@@ -0,0 +1,28 @@
+#include "../../ipc/MutexFactory.h"
+#include "../../osal/host/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
+//MutexFactory* MutexFactory::factoryInstance = new MutexFactory();
+MutexFactory* MutexFactory::factoryInstance = nullptr;
+
+MutexFactory::MutexFactory() {
+}
+
+MutexFactory::~MutexFactory() {
+}
+
+MutexFactory* MutexFactory::instance() {
+	if (factoryInstance == nullptr){
+		factoryInstance = new MutexFactory();
+	}
+	return MutexFactory::factoryInstance;
+}
+
+MutexIF* MutexFactory::createMutex() {
+	return new Mutex();
+}
+
+void MutexFactory::deleteMutex(MutexIF* mutex) {
+	delete mutex;
+}

osal/host/PeriodicTask.cpp

@@ -0,0 +1,176 @@
+#include "Mutex.h"
+#include "PeriodicTask.h"
+
+#include "../../ipc/MutexFactory.h"
+#include "../../serviceinterface/ServiceInterfaceStream.h"
+#include "../../tasks/ExecutableObjectIF.h"
+
+#include <thread>
+#include <chrono>
+
+#if defined(WIN32)
+#include <windows.h>
+#elif defined(LINUX)
+#include <pthread.h>
+#endif
+
+PeriodicTask::PeriodicTask(const char *name, TaskPriority setPriority,
+		TaskStackSize setStack, TaskPeriod setPeriod,
+		void (*setDeadlineMissedFunc)()) :
+		started(false), taskName(name), period(setPeriod),
+		deadlineMissedFunc(setDeadlineMissedFunc) {
+    // It is propably possible to set task priorities by using the native
+    // task handles for Windows / Linux
+	mainThread = std::thread(&PeriodicTask::taskEntryPoint, this, this);
+#if defined(WIN32)
+    /* List of possible priority classes:
+     * https://docs.microsoft.com/en-us/windows/win32/api/processthreadsapi/
+     * nf-processthreadsapi-setpriorityclass
+     * And respective thread priority numbers:
+     * https://docs.microsoft.com/en-us/windows/
+     * win32/procthread/scheduling-priorities */
+    int result = SetPriorityClass(
+            reinterpret_cast<HANDLE>(mainThread.native_handle()),
+            ABOVE_NORMAL_PRIORITY_CLASS);
+    if(result != 0) {
+        sif::error << "PeriodicTask: Windows SetPriorityClass failed with code "
+                << GetLastError() << std::endl;
+    }
+    result = SetThreadPriority(
+            reinterpret_cast<HANDLE>(mainThread.native_handle()),
+            THREAD_PRIORITY_NORMAL);
+    if(result != 0) {
+        sif::error << "PeriodicTask: Windows SetPriorityClass failed with code "
+                << GetLastError() << std::endl;
+    }
+#elif defined(LINUX)
+    // we can just copy and paste the code from linux here.
+#endif
+}
+
+PeriodicTask::~PeriodicTask(void) {
+	//Do not delete objects, we were responsible for ptrs only.
+	terminateThread = true;
+	if(mainThread.joinable()) {
+		mainThread.join();
+	}
+	delete this;
+}
+
+void PeriodicTask::taskEntryPoint(void* argument) {
+	PeriodicTask *originalTask(reinterpret_cast<PeriodicTask*>(argument));
+
+
+	if (not originalTask->started) {
+		// we have to suspend/block here until the task is started.
+		// if semaphores are implemented, use them here.
+		std::unique_lock<std::mutex> lock(initMutex);
+		initCondition.wait(lock);
+	}
+
+	this->taskFunctionality();
+	sif::debug << "PeriodicTask::taskEntryPoint: "
+			"Returned from taskFunctionality." << std::endl;
+}
+
+ReturnValue_t PeriodicTask::startTask() {
+	started = true;
+
+	// Notify task to start.
+	std::lock_guard<std::mutex> lock(initMutex);
+	initCondition.notify_one();
+
+	return HasReturnvaluesIF::RETURN_OK;
+}
+
+ReturnValue_t PeriodicTask::sleepFor(uint32_t ms) {
+	std::this_thread::sleep_for(std::chrono::milliseconds(ms));
+	return HasReturnvaluesIF::RETURN_OK;
+}
+
+void PeriodicTask::taskFunctionality() {
+	std::chrono::milliseconds periodChrono(static_cast<uint32_t>(period*1000));
+	auto currentStartTime {
+	    std::chrono::duration_cast<std::chrono::milliseconds>(
+	    std::chrono::system_clock::now().time_since_epoch())
+	};
+	auto nextStartTime{ currentStartTime };
+
+	/* Enter the loop that defines the task behavior. */
+	for (;;) {
+		if(terminateThread.load()) {
+			break;
+		}
+		for (ObjectList::iterator it = objectList.begin();
+				it != objectList.end(); ++it) {
+			(*it)->performOperation();
+		}
+		if(not delayForInterval(&currentStartTime, periodChrono)) {
+			sif::warning << "PeriodicTask: " << taskName <<
+					" missed deadline!\n" << std::flush;
+			if(deadlineMissedFunc != nullptr) {
+				this->deadlineMissedFunc();
+			}
+		}
+	}
+}
+
+ReturnValue_t PeriodicTask::addComponent(object_id_t object) {
+	ExecutableObjectIF* newObject = objectManager->get<ExecutableObjectIF>(
+			object);
+	if (newObject == nullptr) {
+		return HasReturnvaluesIF::RETURN_FAILED;
+	}
+	objectList.push_back(newObject);
+	return HasReturnvaluesIF::RETURN_OK;
+}
+
+uint32_t PeriodicTask::getPeriodMs() const {
+	return period * 1000;
+}
+
+bool PeriodicTask::delayForInterval(chron_ms* previousWakeTimeMs,
+        const chron_ms interval) {
+    bool shouldDelay = false;
+    //Get current wakeup time
+    auto currentStartTime =
+            std::chrono::duration_cast<std::chrono::milliseconds>(
+            std::chrono::system_clock::now().time_since_epoch());
+    /* Generate the tick time at which the task wants to wake. */
+    auto nextTimeToWake_ms = (*previousWakeTimeMs) + interval;
+
+    if (currentStartTime < *previousWakeTimeMs) {
+        /* The tick count has overflowed since this function was
+         lasted called.  In this case the only time we should ever
+         actually delay is if the wake time has also    overflowed,
+         and the wake time is greater than the tick time.  When this
+         is the case it is as if neither time had overflowed. */
+        if ((nextTimeToWake_ms < *previousWakeTimeMs)
+                && (nextTimeToWake_ms > currentStartTime)) {
+            shouldDelay = true;
+        }
+    } else {
+        /* The tick time has not overflowed.  In this case we will
+         delay if either the wake time has overflowed, and/or the
+         tick time is less than the wake time. */
+        if ((nextTimeToWake_ms < *previousWakeTimeMs)
+                || (nextTimeToWake_ms >  currentStartTime)) {
+            shouldDelay = true;
+        }
+    }
+
+    /* Update the wake time ready for the next call. */
+
+    (*previousWakeTimeMs) =  nextTimeToWake_ms;
+
+    if (shouldDelay) {
+        auto sleepTime = std::chrono::duration_cast<std::chrono::milliseconds>(
+                nextTimeToWake_ms - currentStartTime);
+        std::this_thread::sleep_for(sleepTime);
+        return true;
+    }
+    //We are shifting the time in case the deadline was missed like rtems
+    (*previousWakeTimeMs) = currentStartTime;
+    return false;
+
+}

osal/host/PeriodicTask.h

@@ -0,0 +1,123 @@
+#ifndef FRAMEWORK_OSAL_HOST_PERIODICTASK_H_
+#define FRAMEWORK_OSAL_HOST_PERIODICTASK_H_
+
+#include "../../objectmanager/ObjectManagerIF.h"
+#include "../../tasks/PeriodicTaskIF.h"
+#include "../../tasks/Typedef.h"
+
+#include <vector>
+#include <thread>
+#include <condition_variable>
+#include <atomic>
+
+class ExecutableObjectIF;
+
+/**
+ * @brief 	This class represents a specialized task for
+ * 			periodic activities of multiple objects.
+ * @details
+ *
+ * @ingroup task_handling
+ */
+class PeriodicTask: public PeriodicTaskIF {
+public:
+	/**
+	 * @brief	Standard constructor of the class.
+	 * @details
+	 * The class is initialized without allocated objects. These need to be
+	 * added with #addComponent.
+	 * @param priority
+	 * @param stack_size
+	 * @param setPeriod
+	 * @param setDeadlineMissedFunc
+	 * The function pointer to the deadline missed function that shall be
+	 * assigned.
+	 */
+	PeriodicTask(const char *name, TaskPriority setPriority, TaskStackSize setStack,
+			TaskPeriod setPeriod,void (*setDeadlineMissedFunc)());
+	/**
+	 * @brief	Currently, the executed object's lifetime is not coupled with
+	 * 			the task object's lifetime, so the destructor is empty.
+	 */
+	virtual ~PeriodicTask(void);
+
+	/**
+	 * @brief	The method to start the task.
+	 * @details	The method starts the task with the respective system call.
+	 * 			Entry point is the taskEntryPoint method described below.
+	 * 			The address of the task object is passed as an argument
+	 * 			to the system call.
+	 */
+	ReturnValue_t startTask(void);
+	/**
+	 * Adds an object to the list of objects to be executed.
+	 * The objects are executed in the order added.
+	 * @param object Id of the object to add.
+	 * @return
+	 *  -@c RETURN_OK on success
+	 *  -@c RETURN_FAILED if the object could not be added.
+	 */
+	ReturnValue_t addComponent(object_id_t object);
+
+	uint32_t getPeriodMs() const;
+
+	ReturnValue_t sleepFor(uint32_t ms);
+
+protected:
+	using chron_ms = std::chrono::milliseconds;
+	bool started;
+	//!< Typedef for the List of objects.
+	typedef std::vector<ExecutableObjectIF*> ObjectList;
+	std::thread mainThread;
+	std::atomic<bool> terminateThread = false;
+
+	/**
+	 * @brief	This attribute holds a list of objects to be executed.
+	 */
+	ObjectList objectList;
+
+	std::condition_variable initCondition;
+	std::mutex initMutex;
+	std::string taskName;
+	/**
+	 * @brief	The period of the task.
+	 * @details
+	 * The period determines the frequency of the task's execution.
+	 * It is expressed in clock ticks.
+	 */
+	TaskPeriod period;
+	/**
+	 * @brief	The pointer to the deadline-missed function.
+	 * @details
+	 * This pointer stores the function that is executed if the task's deadline
+	 * is missed. So, each may react individually on a timing failure.
+	 * The pointer may be NULL, then nothing happens on missing the deadline.
+	 * The deadline is equal to the next execution of the periodic task.
+	 */
+	void (*deadlineMissedFunc)(void);
+	/**
+	 * @brief	This is the function executed in the new task's context.
+	 * @details
+	 * It converts the argument back to the thread object type and copies the
+	 * class instance to the task context.
+	 * The taskFunctionality method is called afterwards.
+	 * @param	A pointer to the task object itself is passed as argument.
+	 */
+
+	void taskEntryPoint(void* argument);
+	/**
+	 * @brief	The function containing the actual functionality of the task.
+	 * @details
+	 * The method sets and starts the task's period, then enters a loop that is
+	 * repeated as long as the isRunning attribute is true. Within the loop,
+	 * all performOperation methods of the added objects are called. Afterwards
+	 * the checkAndRestartPeriod system call blocks the task until the next
+	 *  period. On missing the deadline, the deadlineMissedFunction is executed.
+	 */
+	void taskFunctionality(void);
+
+	bool delayForInterval(chron_ms * previousWakeTimeMs,
+	        const chron_ms interval);
+};
+
+#endif /* PERIODICTASK_H_ */

osal/host/QueueFactory.cpp

@@ -0,0 +1,41 @@
+#include "../../ipc/QueueFactory.h"
+#include "../../osal/host/MessageQueue.h"
+#include "../../serviceinterface/ServiceInterfaceStream.h"
+#include <cstring>
+
+QueueFactory* QueueFactory::factoryInstance = nullptr;
+
+
+ReturnValue_t MessageQueueSenderIF::sendMessage(MessageQueueId_t sendTo,
+			MessageQueueMessageIF* message, MessageQueueId_t sentFrom,
+			bool ignoreFault) {
+	return MessageQueue::sendMessageFromMessageQueue(sendTo,message,
+			sentFrom,ignoreFault);
+	return HasReturnvaluesIF::RETURN_OK;
+}
+
+QueueFactory* QueueFactory::instance() {
+	if (factoryInstance == nullptr) {
+		factoryInstance = new QueueFactory;
+	}
+	return factoryInstance;
+}
+
+QueueFactory::QueueFactory() {
+}
+
+QueueFactory::~QueueFactory() {
+}
+
+MessageQueueIF* QueueFactory::createMessageQueue(uint32_t messageDepth,
+		size_t maxMessageSize) {
+	// A thread-safe queue can be implemented  by using a combination
+	// of std::queue and std::mutex. This uses dynamic memory allocation
+	// which could be alleviated by using a custom allocator, external library
+	// (etl::queue) or simply using std::queue, we're on a host machine anyway.
+	return new MessageQueue(messageDepth, maxMessageSize);
+}
+
+void QueueFactory::deleteMessageQueue(MessageQueueIF* queue) {
+	delete queue;
+}

osal/host/QueueMapManager.cpp

@@ -0,0 +1,52 @@
+#include "QueueMapManager.h"
+
+#include "../../ipc/MutexFactory.h"
+#include "../../ipc/MutexHelper.h"
+
+QueueMapManager* QueueMapManager::mqManagerInstance = nullptr;
+
+QueueMapManager::QueueMapManager() {
+    mapLock = MutexFactory::instance()->createMutex();
+}
+
+QueueMapManager* QueueMapManager::instance() {
+	if (mqManagerInstance == nullptr){
+		mqManagerInstance = new QueueMapManager();
+	}
+	return QueueMapManager::mqManagerInstance;
+}
+
+ReturnValue_t QueueMapManager::addMessageQueue(
+		MessageQueueIF* queueToInsert, MessageQueueId_t* id) {
+	// Not thread-safe, but it is assumed all message queues are created
+	// at software initialization now. If this is to be made thread-safe in
+	// the future, it propably would be sufficient to lock the increment
+	// operation here
+	uint32_t currentId = queueCounter++;
+	auto returnPair = queueMap.emplace(currentId, queueToInsert);
+	if(not returnPair.second) {
+		// this should never happen for the atomic variable.
+		sif::error << "QueueMapManager: This ID is already inside the map!"
+				<< std::endl;
+		return HasReturnvaluesIF::RETURN_FAILED;
+	}
+	if (id != nullptr) {
+		*id = currentId;
+	}
+	return HasReturnvaluesIF::RETURN_OK;
+}
+
+MessageQueueIF* QueueMapManager::getMessageQueue(
+		MessageQueueId_t messageQueueId) const {
+	MutexHelper(mapLock, MutexIF::TimeoutType::WAITING, 50);
+	auto queueIter = queueMap.find(messageQueueId);
+	if(queueIter != queueMap.end()) {
+		return queueIter->second;
+	}
+	else {
+		sif::warning << "QueueMapManager::getQueueHandle: The ID" <<
+				messageQueueId << " does not exists in the map" << std::endl;
+		return nullptr;
+	}
+}
+

osal/host/QueueMapManager.h

@@ -0,0 +1,47 @@
+#ifndef FSFW_OSAL_HOST_QUEUEMAPMANAGER_H_
+#define FSFW_OSAL_HOST_QUEUEMAPMANAGER_H_
+
+#include "../../ipc/MessageQueueSenderIF.h"
+#include "../../osal/host/MessageQueue.h"
+#include <unordered_map>
+#include <atomic>
+
+using QueueMap = std::unordered_map<MessageQueueId_t, MessageQueueIF*>;
+
+
+/**
+ * An internal map to map message queue IDs to message queues.
+ * This propably should be a singleton..
+ */
+class QueueMapManager {
+public:
+	//! Returns the single instance of SemaphoreFactory.
+	static QueueMapManager* instance();
+
+	/**
+	 * Insert a message queue into the map and returns a message queue ID
+	 * @param queue The message queue to insert.
+	 * @param id The passed value will be set unless a nullptr is passed
+	 * @return
+	 */
+	ReturnValue_t addMessageQueue(MessageQueueIF* queue, MessageQueueId_t*
+			id = nullptr);
+	/**
+	 * Get the message queue handle by providing a message queue ID.
+	 * @param messageQueueId
+	 * @return
+	 */
+	MessageQueueIF* getMessageQueue(MessageQueueId_t messageQueueId) const;
+
+private:
+	//! External instantiation is forbidden.
+	QueueMapManager();
+	uint32_t queueCounter = 1;
+	MutexIF* mapLock;
+	QueueMap queueMap;
+	static QueueMapManager* mqManagerInstance;
+};
+
+
+
+#endif /* FSFW_OSAL_HOST_QUEUEMAPMANAGER_H_ */

osal/host/SemaphoreFactory.cpp

@@ -0,0 +1,39 @@
+#include "../../tasks/SemaphoreFactory.h"
+#include "../../osal/linux/BinarySemaphore.h"
+#include "../../osal/linux/CountingSemaphore.h"
+#include "../../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(uint32_t arguments) {
+	// Just gonna wait for full C++20 for now.
+	sif::error << "SemaphoreFactory: Binary Semaphore not implemented yet."
+			" Returning nullptr!\n" << std::flush;
+	return nullptr;
+}
+
+SemaphoreIF* SemaphoreFactory::createCountingSemaphore(const uint8_t maxCount,
+		uint8_t initCount, uint32_t arguments) {
+	// Just gonna wait for full C++20 for now.
+	sif::error << "SemaphoreFactory: Counting Semaphore not implemented yet."
+				" Returning nullptr!\n" << std::flush;
+	return nullptr;
+}
+
+void SemaphoreFactory::deleteSemaphore(SemaphoreIF* semaphore) {
+	delete semaphore;
+}

osal/host/TaskFactory.cpp

@@ -0,0 +1,51 @@
+#include "../../osal/host/FixedTimeslotTask.h"
+#include "../../osal/host/PeriodicTask.h"
+#include "../../tasks/TaskFactory.h"
+#include "../../returnvalues/HasReturnvaluesIF.h"
+#include "../../tasks/PeriodicTaskIF.h"
+
+#include <chrono>
+
+TaskFactory* TaskFactory::factoryInstance = new TaskFactory();
+
+// Will propably not be used for hosted implementation
+const size_t PeriodicTaskIF::MINIMUM_STACK_SIZE = 0;
+
+TaskFactory::TaskFactory() {
+}
+
+TaskFactory::~TaskFactory() {
+}
+
+TaskFactory* TaskFactory::instance() {
+	return TaskFactory::factoryInstance;
+}
+
+PeriodicTaskIF* TaskFactory::createPeriodicTask(TaskName name_,
+		TaskPriority taskPriority_,TaskStackSize stackSize_,
+		TaskPeriod periodInSeconds_,
+		TaskDeadlineMissedFunction deadLineMissedFunction_) {
+	return new PeriodicTask(name_, taskPriority_, stackSize_, periodInSeconds_,
+			deadLineMissedFunction_);
+}
+
+FixedTimeslotTaskIF* TaskFactory::createFixedTimeslotTask(TaskName name_,
+		TaskPriority taskPriority_,TaskStackSize stackSize_,
+		TaskPeriod periodInSeconds_,
+		TaskDeadlineMissedFunction deadLineMissedFunction_) {
+	return new FixedTimeslotTask(name_, taskPriority_, stackSize_,
+	        periodInSeconds_, deadLineMissedFunction_);
+}
+
+ReturnValue_t TaskFactory::deleteTask(PeriodicTaskIF* task) {
+	// This might block for some time!
+	delete task;
+	return HasReturnvaluesIF::RETURN_FAILED;
+}
+
+ReturnValue_t TaskFactory::delayTask(uint32_t delayMs){
+	std::this_thread::sleep_for(std::chrono::milliseconds(delayMs));
+	return HasReturnvaluesIF::RETURN_OK;
+}
+
+

osal/linux/PeriodicPosixTask.cpp

@@ -5,8 +5,8 @@
 
 PeriodicPosixTask::PeriodicPosixTask(const char* name_, int priority_,
 		size_t stackSize_, uint32_t period_, void(deadlineMissedFunc_)()):
-		PosixThread(name_,priority_,stackSize_),objectList(),started(false),
+		PosixThread(name_, priority_, stackSize_), objectList(), started(false),
-		periodMs(period_),deadlineMissedFunc(deadlineMissedFunc_) {
+		periodMs(period_), deadlineMissedFunc(deadlineMissedFunc_) {
 }
 
 PeriodicPosixTask::~PeriodicPosixTask() {
@@ -25,6 +25,8 @@ ReturnValue_t PeriodicPosixTask::addComponent(object_id_t object) {
 	ExecutableObjectIF* newObject = objectManager->get<ExecutableObjectIF>(
 			object);
 	if (newObject == nullptr) {
+		sif::error << "PeriodicTask::addComponent: Invalid object. Make sure"
+				<< " it implements ExecutableObjectIF!" << std::endl;
 		return HasReturnvaluesIF::RETURN_FAILED;
 	}
 	objectList.push_back(newObject);
@@ -38,35 +40,41 @@ ReturnValue_t PeriodicPosixTask::sleepFor(uint32_t ms) {
 }
 
 
-ReturnValue_t PeriodicPosixTask::startTask(void){
+ReturnValue_t PeriodicPosixTask::startTask(void) {
 	started = true;
 	//sif::info << stackSize << std::endl;
 	PosixThread::createTask(&taskEntryPoint,this);
 	return HasReturnvaluesIF::RETURN_OK;
 }
 
-void PeriodicPosixTask::taskFunctionality(void){
+void PeriodicPosixTask::taskFunctionality(void) {
-	if(!started){
+	if(not started) {
 		suspend();
 	}
+
+	for (auto const &object: objectList) {
+		object->initializeAfterTaskCreation();
+	}
+
 	uint64_t lastWakeTime = getCurrentMonotonicTimeMs();
 	//The task's "infinite" inner loop is entered.
 	while (1) {
-		for (ObjectList::iterator it = objectList.begin();
+		for (auto const &object: objectList) {
-				it != objectList.end(); ++it) {
+			object->performOperation();
-			(*it)->performOperation();
 		}
-		if(!PosixThread::delayUntil(&lastWakeTime,periodMs)){
+
+		if(not PosixThread::delayUntil(&lastWakeTime, periodMs)){
 			char name[20] = {0};
-			int status = pthread_getname_np(pthread_self(),name,sizeof(name));
+			int status = pthread_getname_np(pthread_self(), name, sizeof(name));
-			if(status==0){
+			if(status == 0) {
 				sif::error << "PeriodicPosixTask " << name << ": Deadline "
 						"missed." << std::endl;
-			}else{
+			}
+			else {
 				sif::error << "PeriodicPosixTask X: Deadline missed. " <<
 						status << std::endl;
 			}
-			if (this->deadlineMissedFunc != NULL) {
+			if (this->deadlineMissedFunc != nullptr) {
 				this->deadlineMissedFunc();
 			}
 		}

osal/linux/PeriodicPosixTask.h

@@ -32,7 +32,7 @@ public:
 	 * 			The address of the task object is passed as an argument
 	 * 			to the system call.
 	 */
-	ReturnValue_t startTask(void);
+	ReturnValue_t startTask() override;
 	/**
 	 * Adds an object to the list of objects to be executed.
 	 * The objects are executed in the order added.

returnvalues/FwClassIds.h

@@ -64,6 +64,7 @@ enum {
 	LOCAL_POOL_OWNER_IF, //LPIF 58
 	POOL_VARIABLE_IF, //PVA 59
 	HOUSEKEEPING_MANAGER, //HKM 60
+	DLE_ENCODER, //DLEE 61
 	FW_CLASS_ID_COUNT //is actually count + 1 !
 
 };

timemanager/CCSDSTime.cpp

@@ -1,7 +1,8 @@
-#include "CCSDSTime.h"
+#include "../timemanager/CCSDSTime.h"
-#include <stdio.h>
+#include <cstdio>
-#include <inttypes.h>
+#include <cinttypes>
-#include <math.h>
+#include <cmath>
+
 
 CCSDSTime::CCSDSTime() {
 }

timemanager/CCSDSTime.h

@@ -5,7 +5,7 @@
 
 #include "Clock.h"
 #include "../returnvalues/HasReturnvaluesIF.h"
-#include <stdint.h>
+#include <cstdint>
 
 bool operator<(const timeval& lhs, const timeval& rhs);
 bool operator<=(const timeval& lhs, const timeval& rhs);