dmq::FreeRTOSConditionVariable Class Reference

Production-grade wrapper around FreeRTOS Semaphore to mimic std::condition_variable. More...

#include <FreeRTOSConditionVariable.h>

Public Member Functions
	FreeRTOSConditionVariable ()
	~FreeRTOSConditionVariable ()
	FreeRTOSConditionVariable (const FreeRTOSConditionVariable &)=delete
FreeRTOSConditionVariable &	operator= (const FreeRTOSConditionVariable &)=delete
void	notify_one () noexcept
	Wake up one waiting thread (ISR Safe)
template<typename Lock , typename Predicate >
void	wait (Lock &lock, Predicate pred)
	Wait indefinitely until predicate is true.
template<typename Lock , typename Predicate >
bool	wait_for (Lock &lock, std::chrono::milliseconds timeout, Predicate pred)
	Wait until predicate is true or timeout expires.

Detailed Description

Production-grade wrapper around FreeRTOS Semaphore to mimic std::condition_variable.

• Uses a Binary Semaphore (1 token).
• ISR-safe notification logic.
• Robust tick overflow handling using elapsed time subtraction.

Note

Limitation: Unlike std::cv, a binary semaphore retains its signal state. If notify() occurs before wait(), the wait will effectively "fall through". Multiple notifies before a wait are coalesced into a single signal.

Constructor & Destructor Documentation

FreeRTOSConditionVariable() [1/2]

dmq::FreeRTOSConditionVariable::FreeRTOSConditionVariable ( )

inline

~FreeRTOSConditionVariable()

dmq::FreeRTOSConditionVariable::~FreeRTOSConditionVariable ( )

inline

FreeRTOSConditionVariable() [2/2]

dmq::FreeRTOSConditionVariable::FreeRTOSConditionVariable ( const FreeRTOSConditionVariable & )

delete

Member Function Documentation

notify_one()

void dmq::FreeRTOSConditionVariable::notify_one ( )

inlinenoexcept

Wake up one waiting thread (ISR Safe)

operator=()

FreeRTOSConditionVariable & dmq::FreeRTOSConditionVariable::operator= ( const FreeRTOSConditionVariable & )

delete

wait()

template<typename Lock , typename Predicate >

void dmq::FreeRTOSConditionVariable::wait ( Lock & lock, Predicate pred )

inline

Wait indefinitely until predicate is true.

wait_for()

template<typename Lock , typename Predicate >

bool dmq::FreeRTOSConditionVariable::wait_for ( Lock & lock, std::chrono::milliseconds timeout, Predicate pred )

inline

Wait until predicate is true or timeout expires.

Uses overflow-safe subtraction logic to track elapsed ticks.

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The documentation for this class was generated from the following file:

• FreeRTOSConditionVariable.h