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 Posted: Sat Dec 16, 2006 10:10 am Post subject: Runtime selection of inlined function |
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I'm attempting to devise a way of selecting an inlined function to call
depending on the value of a variable at runtime without having to make
changes to the calling code when changing the called functions or
adding new functions.
To be clear, the goal is to have the call inlined and to not have to
change code at the call site to maintain the set of callable functions.
If changing the calling code on an ongoing basis was an option I could
obviously do:
switch (conf.fctnum) {
case 1: a(); break;
case 2: b(); break;
...
}
What I imagine I want to do is define and "register" functions in
separate header files before including header containing the calling
code.
Thank you for any help.
/Kim
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Carl Barron
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| Posted: Sun Dec 17, 2006 12:22 am Post subject: Re: Runtime selection of inlined function |
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In article <1166227595.073947.305680 (AT) 73g2000cwn (DOT) googlegroups.com>,
<scheibel (AT) gmail (DOT) com> wrote:
| Quote: | I'm attempting to devise a way of selecting an inlined function to call
depending on the value of a variable at runtime without having to make
changes to the calling code when changing the called functions or
adding new functions.
To be clear, the goal is to have the call inlined and to not have to
change code at the call site to maintain the set of callable functions.
See boost [or tr1] function. |
If your compile once function also has a boost::function argument
then you can overload it in the various headers to be callled with
a specific boost::function instance.
void bar(boost::function<void(void)>);
namespace
{
inline void foo() {/**/}
inline void bar() { bar(foo);}
}
if you want different headers in different compilation units of the
program.
void bar(boost::function<void(void) call_me)
{
//...
call_me();
// ...
}
needs to be compiled once. But the calls are not really inlined.
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