a simple thread-safe counter object; objects can block on it until the counter reaches zero More...

Inheritance diagram for QoreCounter:

Public Member Methods
DLLEXPORT	QoreCounter (int nc=0)
	creates the counter and initializes the count

DLLEXPORT	~QoreCounter ()
	destroys the object and frees all memory

DLLEXPORT int	dec (ExceptionSink *xsink)
	decrements the counter and wakes up any threads if the counter reaches 0 More...

DLLEXPORT void	destructor (ExceptionSink *xsink)
	throws a Qore-language exception if there are any waiting threads and wakes them all up

DLLEXPORT int	getCount () const
	returns the current count

DLLEXPORT int	getWaiting () const
	returns the number of threads blocked on this object

DLLEXPORT int	inc ()
	increments the counter More...

DLLEXPORT int	waitForZero (ExceptionSink *xsink, int timeout_ms=0)
	blocks the calling thread until the counter reaches 0 More...

Detailed Description

a simple thread-safe counter object; objects can block on it until the counter reaches zero

Member Function Documentation

DLLEXPORT int QoreCounter::dec ( ExceptionSink * xsink )

decrements the counter and wakes up any threads if the counter reaches 0

a Qore-language exception will be raised here if QoreCounter::destructor() has already been run before calling this function.

Parameters

xsink any Qore-language exception thrown will be added here

Referenced by getWaiting().

DLLEXPORT int QoreCounter::inc ( )

increments the counter

DLLEXPORT int QoreCounter::waitForZero	(	ExceptionSink *	xsink,
		int	timeout_ms = `0`
	)

blocks the calling thread until the counter reaches 0

a Qore-language exception will be raised here if QoreCounter::destructor() is run while threads are still blocked

Parameters

xsink	any Qore-language exception thrown will be added here
timeout_ms	indicates a timeout in milliseconds to wait, 0 means no timeout

Referenced by getWaiting().

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