FlowGraph is a library for defining and efficiently running tasks in a dependency graph. For example, say you are running an RPC server that on each request queries other services, performs tasks based on queried data, and logs the results. This library allows you to define each of those tasks as a separate unit that will run as soon as its dependencies are ready.
A dependency graph is a graph of tasks. Task produces an output and requires a set of inputs. In the library, a function represents a task. You build a dependency graph by connecting tasks to Futures that produce input the task depends on. By connecting a task to its dependencies you get a Future wrapping the result of this task. This process is called lifting.
See example in the example/ directory to see how to use it.
CMake is used to build and install the library. Use the following command to build the library and the example:
mkdir -p build && cd build && cmake .. && make
To install the library in a path of your own choosing run:
cmake -DCMAKE_INSTALL_PREFIX:PATH=YOUR_PATH && make install
The library is called flow_graph.