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Class `core.sync.barrier.Barrier`

This class represents a barrier across which threads may only travel in groups of a specific size.


						
				class Barrier
				;

Constructors

Name	Description
`this`	Initializes a barrier object which releases threads in groups of limit in size.

Methods

Name	Description
`wait`	Wait for the pre-determined number of threads and then proceed.
`factory`	Create instance of class specified by the fully qualified name classname. The class must either have no constructors or have a default constructor.
`opCmp`	Compare with another Object obj.
`opEquals`	Test whether `this` is equal to `o`. The default implementation only compares by identity (using the `is` operator). Generally, overrides for `opEquals` should attempt to compare objects by their contents.
`toHash`	Compute hash function for Object.
`toString`	Convert Object to a human readable string.

Example

int  numThreads = 10;
auto barrier    = new Barrier( numThreads );
auto synInfo    = new Object;
int  numReady   = 0;
int  numPassed  = 0;

void threadFn()
{
    synchronized( synInfo )
    {
        ++numReady;
    }
    barrier.wait();
    synchronized( synInfo )
    {
        ++numPassed;
    }
}

auto group = new ThreadGroup;

for ( int i = 0; i < numThreads; ++i )
{
    group.create( &threadFn );
}
group.joinAll();
assert( numReady == numThreads && numPassed == numThreads );
}

Authors

Sean Kelly

License

Boost License 1.0