Keywords: TestMetaData

# task_group Class Members

The following table provides additional information on the members of this template class.
Member | Description
--- | ---
task_group() | Constructs an empty `task group`.
~task_group() | Requires: Method `wait` must be called before destroying a `task_group`, otherwise the destructor throws an exception.
template<typename Func> void run( const Func& f ) | Spawn a task that computes`f()` and return immediately.
template<typename Func> void run ( task_handle<Func>& handle ); | Spawn a task that computes `handle()` and return immediately.
template<typename Func> void run_and_wait( const Func& f ) | Equivalent to `{run(f); wait();}`, but guarantees that`f` runs on the current thread. ### Note Template method `run_and_wait` is intended to be more efficient than separate calls to `run` and `wait`.
template<typename Func> void run _and_wait( task_handle<Func>& handle ); | Equivalent to `{run(handle); wait();}`, but guarantees that `handle()` runs on the current thread. ### Note Template method `run_and_wait` is intended to be more efficient than separate calls to `run` and `wait`.
task_group_status wait() | Wait for all tasks in the group to complete or be cancelled. Returns: True if this task group is cancelling its tasks.
bool is_canceling() | Returns: True if this task group is cancelling its tasks.
void cancel() | Cancel all tasks in this `task_group`.

Parent topic: task_group Class