Threads::DummyBarrier Class Reference

List of all members.

Classes

class  ExcBarrierSizeNotUseful

Public Member Functions

 DummyBarrier (const unsigned int count, const char *name=0, void *arg=0)
int wait ()
void dump ()


Detailed Description

This class is used instead of a true barrier class when not using multithreading. It allows to write programs such that they use the same class names in multithreading and non-MT mode and thus may be compiled with or without thread-support without the need to use conditional compilation. Since a barrier class only makes sense in non-multithread mode if only one thread is to be synchronised (otherwise, the barrier could not be left, since the one thread is waiting for some other part of the program to reach a certain point of execution), the constructor of this class throws an exception if the count argument denoting the number of threads that need to be synchronised is not equal to one.

Author:
Wolfgang Bangerth, 2001

Constructor & Destructor Documentation

Threads::DummyBarrier::DummyBarrier ( const unsigned int  count,
const char *  name = 0,
void *  arg = 0 
)

Constructor. Since barriers are only useful in single-threaded mode if the number of threads to be synchronised is one, this constructor raises an exception if the count argument is one.


Member Function Documentation

int Threads::DummyBarrier::wait (  )  [inline]

Wait for all threads to reach this point. Since there may only be one thread, return immediately, i.e. this function is a no-op.

void Threads::DummyBarrier::dump (  )  [inline]

Dump the state of this object. Here: do nothing.


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

deal.II documentation generated on Sat Aug 15 16:52:49 2009 by doxygen 1.5.9