Method for manipulating a control program of a control device

A method for manipulating a control program of a control unit, the control unit having a first memory for accommodating the control program, and the control program having a plurality of first functions, at least one of the first functions controlling an actuator, the method comprising:

• providing a plurality of variables;
• assigning a memory address to each of the variables, a predefined assignment being implemented between the variables and the first functions;
• providing the control unit with at least one processor, the at least one processor of the control unit having a plurality of computing cores;
• executing the control program with the first functions by a first computing core;
• processing, during the processing of the control program, a second function in a second computing core of the control unit;
• assigning a first function a first value to a variable and writing the first value into the memory address of the variable at a first point in time;
• and
• assigning the second function a second value to the variable, the variable being overwritten with the second variable at a second point in time, the control program accessing the modified value of the variable at a third point in time,
• wherein the second function has program code that is different at least in part from the first function, and
• wherein a control instance time-coordinates the accesses to the memory address of the variable with one another such that the first point in time falls before the second point in time and the second point in time falls before the third point in time.