What is the difference between callee and caller

If there is a function image below: So, this function is in this function you are teasing me, followed by object , this property is an object TypeOf will know , then it also has the attribute; Speak There are two special objects inside the function:arguments with this. Arguments has an attribute: callee.

Use the Callee to implement the recursive function. This property is a pointer, pointing to The found content is Datong, and the finishing summed up. A calling convention governs how functions on a particular architecture and operating system interact. This includes rules about includes how function arguments are placed, where return values go, what registers functions may use, how they may allocate local variables, and so forth.

Calling conventions ensure that functions compiled by different compilers can interoperate, and they ensure that operating systems can run code from different programming languages and compilers. Some aspects of a calling convention are derived from the instruction set itself, but some are conventional, meaning decided upon by people for instance, at a convention. Calling conventions constrain both callers and callees.

A caller is a function that calls another function; a callee is a function that was called. The currently-executing function is a callee, but not a caller. For concreteness, we learn the x calling conventions for Linux. One set of calling convention rules governs how function arguments and return values are passed. The seventh and subsequent arguments are passed on the stack, about which more below.

The full rules more complex than this. Some highlights:. A structure that fits in two to four machine words 16—32 bytes is passed in sequential registers, as if it were multiple arguments. If the return value takes more than eight bytes, then the caller reserves space for the return value, and passes the address of that space as the first argument of the function.

The callee will fill in that space when it returns. Recall that the stack is a segment of memory used to store objects with automatic lifetime. Typical stack addresses on x look like 0x7ffd'9f10'4f58 —that is, close to 2 The stack is named after a data structure, which was sort of named after pancakes. Which is sort of how stacks of pancakes work.

This restriction can speed up stack implementations. One key point is that for each call between routines, the routine that initiates the call is the caller and the routine that is being called is is the callee. If you want to see why these terms are worth defining, read about linkage conventions and ask yourself how you'd describe the concept of linkage conventions without these two terms or two other terms with equivalent meaning.

These terms aren't particularily useful outside of the realm of linkage conventions or calling conventions. When a routine calls another routine, it may pass something to the other routine. From the perspective of the caller the thing which is passed is an argument. From the perspective of the routine that receives the call, i.