void data_sample( const T& sample )
{
minit = sample;
// read each item from the queue
// and re-init it with sample
for( unsigned int i = 0; i < mpool.capacity(); ++i ) {
mpit[i].content = minit;
}
}
/**
* Returns the maximum number of elements.
*/
size_type capacity() const {
return mpool.capacity();
}