Task Properties

Every task has properties, which contain additional scheduling or debug information about that task. What these task-properties are, must be configured by the user. This is typically done by combining multiple predefined and custom property classes, each providing a builder. RedGrapes provides the means for combining such independent property definitions accordingly from a variadic template:

redGrapes::TaskProperties< Property1, Property2, ... >

When creating a task using emplace_task(), the second parameter is the task properties. Each individual property class should have sensible defaults and provide builder functions for creating property-configurations nicely.

Here is a full example using the predefined LabelProperty:

#include <iostream>
#include <redGrapes/manager.hpp>
#include <redGrapes/property/label.hpp>

namespace rg = redGrapes;

using TaskProperties = rg::TaskProperties< rg::LabelProperty >;

int main()
{
    rg::Manager< TaskProperties > mgr;

    mgr.emplace_task(
        [] { std::cout << "Hello World!" << std::endl; },
        TaskProperties::Builder().label( "Example Task" )
    );

    return 0;
}

Another essential predefined property is the ResourceProperty, which will be discussed in the next section!