The workqueuing model lets you parallelize control structures that are beyond the scope of those supported by the OpenMP* model, while attempting to fit into the framework defined by OpenMP. In particular, the workqueuing model is a flexible mechanism for specifying units of work that are not pre-computed at the start of the worksharing construct. For single, for, and sections constructs all work units that can be executed are known at the time the construct begins execution. The workqueuing pragmas taskq and task relax this restriction by specifying an environment (the taskq) and the units of work (the tasks) separately.