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Should all functions be inline?
According to (2) a function should be declared inline if it is 10 lines or less, according to (1) furthermore the compiler could ignore the inline directive, for example when there are loops or recursion (just some example is provided so I don’t know all the cases that would be ignored by the compiler).
Are inline functions bad?
They might cause thrashing, they might prevent thrashing. And they might be, and often are, totally irrelevant to speed. inline functions might make it slower: Too much inlining might cause code bloat, which might cause “thrashing” on demand-paged virtual-memory systems.
Why inline function may not work sometimes?
The inlining does not work for the following situations: For functions that return values and are having a loop or switch or goto. For functions not returning values, if a return statement exists.
When should I inline a function?
do: use inline instead of #define. very small functions are good candidates for inline : faster code and smaller executables (more chances to stay in the code cache) the function is small and called very often.
In which situation inline function will not work?
The inline function may not work under following situations: The inline function definition is too big or complicated. The inline function is a recursive. The inline function has switch or go to statements.
Where inline function does not work?
When a function is recursive, it cannot be inlined. A function containing static variables cannot be made an inline function. The compiler declines the request of inlining a function if it contains any switch or go-to statements.
What causes a function to be an inline function?
Using inline in the function definition causes it to be an inline function. However, it’s not allowed to redeclare a function as inline after a call to that function. The inline and __inline specifiers instruct the compiler to insert a copy of the function body into each place the function is called.
Why are compilers supposed to inline function calls?
Closed 6 years ago. Sometimes compilers inline function calls. That means that they move the code of the called function into the calling function. This makes things slightly faster because there’s no need to push and pop stuff on and off the call stack. So my question is, why don’t compilers inline everything?
When do one line functions not need to be called?
Depends on that one line. If the line is readable and concise by itself, the function may not be needed. Simplistic example: OTOH, if the function gives a good name to a line of code containing e.g. a complex, hard to read expression, it is perfectly justified (to me).
Can a function be declared without the inline keyword?
In the class declaration, the functions were declared without the inline keyword. The inline keyword can be specified in the class declaration; the result is the same. A given inline member function must be declared the same way in every compilation unit.
https://www.youtube.com/watch?v=SFgBr6Jd7ok