cpid::priority_mutex Class Reference

This class implements a mutex that offers some control over the priority of the waiting threads. More...

#include <prioritymutex.h>

Public Member Functions
	priority_mutex (int maxPrio)
	Constructs a mutex. More...
	priority_mutex (const priority_mutex &)=delete
priority_mutex &	operator= (const priority_mutex &)=delete
	priority_mutex (priority_mutex &&)=delete
void	lock (int prio=0)
bool	try_lock (int prio=0)
void	unlock ()

Protected Member Functions
bool	canGo (int prio)

Protected Attributes
std::mutex	queueMutex_
std::mutex	dataMutex_
std::condition_variable_any	queueCV_
std::vector< int >	queueCount_
int	maxPrio_

Detailed Description

This class implements a mutex that offers some control over the priority of the waiting threads.

If several threads are waiting to obtain the lock, it is guaranteed that the one with the highest priority will get it first. If there are several threads with the same priority level, then the outcome is up to the pthread implementation. Note that if there are always high priority threads in the queue, it will create starvation on the lower priority ones. If used inside a lock from the standard library, this will default to locking with the lowest priority

Constructor & Destructor Documentation

cpid::priority_mutex::priority_mutex ( int  maxPrio )

inline

Constructs a mutex.

Parameters

maxPrio

is the maximal priority level accepted

cpid::priority_mutex::priority_mutex ( const priority_mutex &  )

delete

cpid::priority_mutex::priority_mutex ( priority_mutex &&  )

delete

Member Function Documentation

bool cpid::priority_mutex::canGo ( int  prio )

inlineprotected

void cpid::priority_mutex::lock ( int  prio = 0 )

inline

priority_mutex& cpid::priority_mutex::operator= ( const priority_mutex &  )

delete

bool cpid::priority_mutex::try_lock ( int  prio = 0 )

inline

void cpid::priority_mutex::unlock ( )

inline

Member Data Documentation

std::mutex cpid::priority_mutex::dataMutex_

protected

int cpid::priority_mutex::maxPrio_

protected

std::vector<int> cpid::priority_mutex::queueCount_

protected

std::condition_variable_any cpid::priority_mutex::queueCV_

protected

std::mutex cpid::priority_mutex::queueMutex_

protected

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

• cpid/prioritymutex.h