RWTPCValStackPrioritized< Type > Class Template Reference

Last-in-first-out (LIFO) stack that provides producer-consumer synchronization semantics for exchanging prioritized values between cooperating threads. More...

#include <rw/itc/RWTPCValStackPrioritized.h>

Inheritance diagram for RWTPCValStackPrioritized< Type >:

Public Member Functions
	RWTPCValStackPrioritized (size_t maxCapacity=0, bool isOpen=true)
	~RWTPCValStackPrioritized (void)
Public Member Functions inherited from RWTPCValBufferBasePrioritized< Type, RWTPriorityDecorator< Type > >
virtual	~RWTPCValBufferBasePrioritized (void)
bool	tryWrite (long priority, const Type &value)
void	write (long priority, const Type &value)
RWWaitStatus	write (long priority, const Type &value, unsigned long milliseconds)
Public Member Functions inherited from RWTPCValBufferBaseDecorated< Type, RWTPriorityDecorator< Type > >
virtual	~RWTPCValBufferBaseDecorated (void)
Type	peek (void)
RWWaitStatus	peek (Type &result, unsigned long milliseconds)
Type	read (void)
RWWaitStatus	read (Type &result, unsigned long milliseconds)
bool	tryPeek (Type &result)
bool	tryRead (Type &result)
bool	tryWrite (const Type &value)
void	write (const Type &value)
RWWaitStatus	write (const Type &value, unsigned long milliseconds)

Additional Inherited Members
Protected Member Functions inherited from RWTPCValBufferBase< RWTPriorityDecorator< Type > >
virtual	~RWTPCValBufferBase (void)
RWTPriorityDecorator< Type >	peek (void)
RWWaitStatus	peek (RWTPriorityDecorator< Type > &result, unsigned long milliseconds)
RWTPriorityDecorator< Type >	read (void)
RWWaitStatus	read (RWTPriorityDecorator< Type > &result, unsigned long milliseconds)
bool	tryPeek (RWTPriorityDecorator< Type > &result)
bool	tryRead (RWTPriorityDecorator< Type > &result)
bool	tryWrite (const RWTPriorityDecorator< Type > &value)
void	write (const RWTPriorityDecorator< Type > &value)
RWWaitStatus	write (const RWTPriorityDecorator< Type > &value, unsigned long milliseconds)

Detailed Description

template<class Type>
class RWTPCValStackPrioritized< Type >

RWTPCValStackPrioritized<Type> is a last-in-first-out (LIFO) stack that provides producer-consumer synchronization semantics for exchanging prioritized values between cooperating threads.

In the producer-consumer synchronization model, reader threads (consumers) are blocked while the stack is empty, and writer threads (producers) are blocked while the stack is full. The stack is considered full when the number of unread entries equals or exceeds some user-specified maximum capacity.

The write operations inherited by this class bind a priority value to each data value prior to storing that value in an internal buffer. The priority value is used during write operations to determine a value's insertion point within the stack, such that the set of unread values will be retrieved in priority order when they are eventually read from the stack. A new value is retrieved before any previously inserted values of the same priority.

Example

See the example given under RWTPCValQueuePrioritized<Type> .

Constructor & Destructor Documentation

template<class Type >

RWTPCValStackPrioritized< Type >::RWTPCValStackPrioritized ( size_t  maxCapacity = 0, bool  isOpen = true  )

inline

Constructs a value-based, prioritized, producer-consumer stack instance. The parameter maxCapacity specifies the maximum number of unread entries allowed to accumulate within the stack. Once the number of entries in the stack equals this number, any thread attempting to write an additional entry is blocked until an entry is removed by a read operation, or until the capacity is increased. A capacity of zero, the default, indicates that the stack has no size limit, except as imposed by memory limitations, and that all write operations should complete without blocking.

The parameter isOpen is a bool value that specifies whether the stack should be initialized in the open state, true, the default, or the closed state, false.

template<class Type >

RWTPCValStackPrioritized< Type >::~RWTPCValStackPrioritized ( void  )

inline

Destructor.