C++函数很短, 但是函数内调用一个很长的函数, 该用inline吗?

Question

void x(){
    thisIsALongFunction();
}

如上图所示的代码, x()中只有一句话, 但是它所调用的函数很长, 这种情况下需要inline吗?

Answer 1

In this case, the compiler will directly inline the outer function.

Answer 2

inlineThis is just a suggestion to the compiler, not a requirement.

However, the implementation of mainstream compilers will ignore your suggestions. If you turn on O2, short functions will be automatically inlined, but long functions will not be inlined. So ignore it.

Answer 3

Add it, inlining will remove your extra layer of encapsulation, and the encapsulation inside should still be there

Answer 4

Don’t worry about these issues, it doesn’t matter whether the code optimized by the compiler is inline or not.

Answer 5

First figure out what inline is for,