Since I am not sure what you are refering to exactly it is hard to answer. Refer to an example maybe? Also take a look at i.e. std::sort / the compare type (you seem to be a c++ guy). Why do we need a pointer there (actually function object, slight generalization of a funciton pointer)?
Why would it be helpful to define your on method to be called on wakeup (one of the places where I know fp's are used)? On 02/04/15 11:54, Nicholas Krause wrote: > > On April 2, 2015 6:15:19 AM EDT, Malte Vesper > <[email protected]> wrote: >> Virtual functions are implemented on on the base of vtables, which in >> turn are implemented using function pointers. >> So it would be good to get a grasp on functionpointers (they exist in >> C++ as well), also I believe this is not a C mailing list, take a look >> at stackoverflow or a c/c++ site or book of your choice. >> If you know how a pointer works, you will find it easy to understand >> how >> a functionpointer works. >> >> On 02/04/15 05:16, Nicholas Krause wrote: >>> Greetings All, >>> I'm a little rough with how function pointers work in C. I assumed >> there similar to way C++ stores virtual functions internally in the >> vtable for virtual functions by the compiler and checks the table at >> runtime. Please let me know if I'm wrong in my understanding. >>> Thanks, >>> Nick >>> > I looked in to it and the kernel seems to be one of the few places where this > is done along with in line functions. Why do we need function pointers in > the kernel, outside of device drivers is my real question and is there any > way to do the code using them without function pointers at all, I am assuming > no. > Thanks, > Nick _______________________________________________ Kernelnewbies mailing list [email protected] http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
