answersLogoWhite

0

What is a stack frame?

Updated: 8/11/2023
User Avatar

Wiki User

7y ago

Best Answer

The Stack class represents a last-in-first-out (LIFO) stack of objects. It extends class Vector with five operations that allow a vector to be treated as a stack. The usual push and pop operations are provided, as well as a method to peek at the top item on the stack, a method to test for whether the stack is empty, and a method to search the stack for an item and discover how far it is from the top.

When a stack is first created, it contains no items.

Methods:

  • empty() - Returns boolean - Used to check if the stack is empty
  • peek() - Returns Object - Take a look at the top most element in the stack without popping it
  • Pop() - Returns Object - Returns the top most element from the stack
  • push(Object o) - Pushes the object at the top of the stack
  • search(Object o) - Returns int - Returns the index location of the searched object. Returns -1 if the object is not found.

Stack is a data structure it allows data to be inserted and removed in a push and a pop operation . stack also support a peek operation which reads data without removing it. A stack is a LIFO-queue, meaning that the last data to be inserted will be the first data to be removed

User Avatar

Wiki User

12y ago
This answer is:
User Avatar
More answers
User Avatar

Wiki User

7y ago

The word 'stack' is a verb and a noun.

  • The verb to 'stack' is to place one thing on top of another to form a pile; to direct aircraft to circle a landing area waiting to land; to arrange cards, facts, or circumstances that will result in an outcome is overwhelmingly likely; a word for an action.
  • The noun 'stack' is a word for a pile of neatly arranged things; a word for a quantity of hay or straw piled for future use; a word for a chimney on a factory, or a vertical exhaust pipe on a vehicle; a word for an area of a library in which most of the books are shelved; a word for a thing.

In computer science (or computer technology or computer programming) a stack is a data structure (how multiple pieces of data are stored internally) so that information is entered into a stack by a computer program and when retrieved, the most recent item put into the stack is the next item to be removed. This kind of stack is also called a push down stack or a Last in First out (LIFO) structure. This is different from a queue where information is retrieved in the order that it was stored, also know as a First in First out (FIFO) structure..

This answer is:
User Avatar

User Avatar

Wiki User

14y ago

A stack is a data structure that allows storage of data for later retrieval. It is characterized as a last-in-first-out (LIFO) structure, allowing nested use of data.

Think of it as a stack of papers on your desk. You place each paper on top of the stack. You can retrieve the papers in the reverse order that you placed them. If you get interrupted to do something, you stop what you are doing, write down what you were doing, and place that information on top of the stack. Later, you retrieve it and continue doing what you were doing.

The most common use of a stack is to record the return address and state for a function call, along with the parameters for that function call. The called function can then allocate additional space on the stack for its temporary variables. The set of data comprising return address and state, parameters, and temporary variables is often known as a stack frame.

This answer is:
User Avatar

User Avatar

Wiki User

13y ago

Stacks are used in situations where we need to pull out the last inserted element at first, means LIFO.

for example in recursion the function when called last time returns the value at first, for this compiler need a stack.

This answer is:
User Avatar

User Avatar

Wiki User

7y ago

A stack frame is a block of memory allocated on the call stack. Each time you invoke a function, a stack frame is created to store the function's local variables, the return address, and the function's arguments. The size of each frame depends on which function is invoked, but remains constant for a given function. In the case of recursive functions, a new stack frame is created with each recursion.

Stack frames are released when the corresponding functions return to their callers.

Each thread of execution has its own dedicated call stack and is fixed length. A thread's stack is instantiated when the thread is instantiated, and occupies contiguous memory addresses. The top of the stack is at the highest address. At the top of the main thread's stack is the stack frame for the main function. A stack pointer refers to the next available address on the stack and adjusts as functions are called and returned. If we run out of memory for the next stack frame, the program terminates with a stack allocation error.

This answer is:
User Avatar

User Avatar

Wiki User

15y ago

Term used to describe individuals of African decent with homosexual tendencies. Often refered to as "Stackneezy" or "Stacknizzle"

This answer is:
User Avatar

User Avatar

Wiki User

9y ago

A call stack is a stack which stores details of the functions called by a program in sequence, so that each function can return to the code that called it.

This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: What is a stack frame?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Continue Learning about Engineering

Why must the stack pointer be initialized at the beginning of every program?

Because the stack pointer marks the top of the stack. If it is not initialised, it is not possible to determine where the next stack frame will go.


What is Usage of stack register?

The stack register points to the top of the stack for the currently executing thread. The stack is a fixed-length memory allocation at the bottom of addressable memory (highest available address). The stack extends upwards into lower addresses. To keep track of the stack's usage, the stack pointer marks the top of the stack where a new frame will be pushed, decrementing the stack pointer by the required amount. When a frame is popped, the stack pointer is incremented by the frame length. The stack is typically used to call and return from functions by storing the return address of the caller, but can also be used to store a function's arguments (the values passed to it by its caller), its local variables and its exception handlers. Since the memory is allocated as soon as the thread becomes active, moving a pointer to activate and release stack frames is much quicker than requesting heap memory via the operating system.


What is implicit stack?

A stack created by the user or a programmer is an implicit stack


Define stack.discuss push and pop operation?

A stack is a region of memory that you store things, and retrieve them in the reverse order of storage. Think of it as a stack of papers. You write something down on a piece of paper, and then you put that paper in a stack, specifically on the top of the stack. This is called a push operation. If you want to go and do something else, such as service an interrupt or call another function, you create more pieces of paper and you push them onto the top of the stack as well. Under normal conditions, you cannot access anything on the stack below the top. I say "normal" because the architecture of the processor allows you to access chunks of memory contained within the stack, relative to the base pointer BP, allowing you to pass arguments and store temporary variables in what is called a stack frame. The reverse of push is called pop, and it is equivalent to taking a piece of paper off of the top of the stack and throwing it away - or using it, whatever you want - but that action exposes the next piece of paper, which is now the new "top of stack".


Can stack be as a pointer?

A stack is a data structure in which last item inserted is taken out first . That's why they are known as LIFO (last in first out). Inserting an item in stack is termed as push and taking an item out from stack I s termed as pop. Stack pointer is the pointer that points to the top of the stack or that points the item at the top of the stack and help in adding or deleting the item from the top of stack.

Related questions

Why must the stack pointer be initialized at the beginning of every program?

Because the stack pointer marks the top of the stack. If it is not initialised, it is not possible to determine where the next stack frame will go.


What is Usage of stack register?

The stack register points to the top of the stack for the currently executing thread. The stack is a fixed-length memory allocation at the bottom of addressable memory (highest available address). The stack extends upwards into lower addresses. To keep track of the stack's usage, the stack pointer marks the top of the stack where a new frame will be pushed, decrementing the stack pointer by the required amount. When a frame is popped, the stack pointer is incremented by the frame length. The stack is typically used to call and return from functions by storing the return address of the caller, but can also be used to store a function's arguments (the values passed to it by its caller), its local variables and its exception handlers. Since the memory is allocated as soon as the thread becomes active, moving a pointer to activate and release stack frames is much quicker than requesting heap memory via the operating system.


How primitive variables are stored on Stack?

Call-stacks are fixed-length and are allocated on a per-thread basis as threads are instantiated. The stack pointer CPU register keeps track of the next available address in the current thread's stack. The compiler computes the length of a function according to the number and type of its local variables (including formal arguments) plus the return address. When the function is invoked, the current stack pointer is adjusted by this amount, creating a "stack frame" specific to that function. Given the start address of the stack frame, the local variables and formal arguments can be referred to via constant offsets within the stack frame. When the function returns, the stack pointer is readjusted, effectively freeing the memory without actually releasing it back to the system. In this way, memory can be allocated and released on the stack with minimum cost.


Why inlinefunctions can't be recursive?

Inline functions are just that, they are "inline", which means that the compiler injects the body of the function declaration into (inline to) the text segment without generating the actual call sequence. Without the call sequence, there is no stack frame, so there are no local variables. Without local variables or the stack frame, there can be no recursion.


What is a service that provides IPv6 connectivity to IPv4 users?

There are a number of technologies that can provide IPv6 translation for IPv4 users, most commonly Dual Stack and 6 to 4 tunneling. DUAL STACK involves running both IPv4 and IPv6 on a single router with the router managing the implementation of either protocol as and when necessary. 6 to 4 tunneling encapsulates an IPv6 frame in and IPv4 frame for tansport over an IPv4 network either to its destination address or a network where the IPv4 frame can be discarded.


What is implicit stack?

A stack created by the user or a programmer is an implicit stack


What is purpose of BP in pointers registers?

The BP register is an index register that allow convenient access to arguments and local variable in the stack frame, because its use automatically selects the stack segment register. It is usually initialized with the value of the stack pointer at some point in the function routine, so that addresses above BP represent arguments and addresses below BP represent local variables.


What is the function of a stack pointer?

Stack pointer points to the topmost / most recently referenced location on the stack; - Nutan


How much in a stack?

$1000 in a stack


Define stack.discuss push and pop operation?

A stack is a region of memory that you store things, and retrieve them in the reverse order of storage. Think of it as a stack of papers. You write something down on a piece of paper, and then you put that paper in a stack, specifically on the top of the stack. This is called a push operation. If you want to go and do something else, such as service an interrupt or call another function, you create more pieces of paper and you push them onto the top of the stack as well. Under normal conditions, you cannot access anything on the stack below the top. I say "normal" because the architecture of the processor allows you to access chunks of memory contained within the stack, relative to the base pointer BP, allowing you to pass arguments and store temporary variables in what is called a stack frame. The reverse of push is called pop, and it is equivalent to taking a piece of paper off of the top of the stack and throwing it away - or using it, whatever you want - but that action exposes the next piece of paper, which is now the new "top of stack".


How do you use the word stack in a sentence?

Stack these boxes over there, please.There was a stack of cards sitting on the table.


What has the author Gael Stack written?

Gael Stack has written: 'Gael Stack' 'Gael Stack' -- subject(s): Themes, motives