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The block of successive memory location that is accessible in last in first out basis is called what?
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The block of successive memory location that is accessible in last in ...
Stack Memory


The block of successive memory locations that is accessible in a last in first out (LIFO) basis is called the stack memory. It is a data structure that stores information in a particular order.


How It Works


The stack memory follows a simple principle where the last item that is inserted into the stack is the first item to be removed. This is often referred to as the "last in, first out" or LIFO principle. Think of it as a stack of books where you can only access the book on the top of the stack.


Implementation


Stack memory can be implemented using an array or a linked list. In both cases, the stack has two main operations:



  • Push: This operation adds an element to the top of the stack. It increases the stack size by one and assigns the new element to the top position.

  • Pop: This operation removes the top element from the stack. It decreases the stack size by one and returns the value of the removed element.



Usage


Stack memory is widely used in computer science and programming for various purposes. Some common use cases include:



  • Function calls: When a function is called, the program stores the return address and other relevant information on the stack. This allows the program to return to the correct point after the function finishes.

  • Expression evaluation: When evaluating mathematical expressions or parsing syntax, stack memory can be used to keep track of operators and operands.

  • Memory allocation: Stack memory is also used for allocating and deallocating memory for local variables in programming languages.

  • Undo/Redo operations: In applications where undo and redo functionality is required, stack memory can be used to store the history of operations.



Advantages and Disadvantages


Stack memory offers several advantages:



  • Efficiency: Pushing and popping elements from the stack is a constant time operation, making it efficient for many applications.

  • Simplicity: The stack data structure is relatively simple to understand and implement.

  • Memory management: Stack memory management is automatic, as memory is allocated and deallocated in a predetermined order.



However, it also has some limitations:



  • Fixed size: The size of the stack memory is fixed, and once it is full, it cannot accommodate additional elements without removing existing ones.

  • No random access: Unlike an array, stack memory does not support random access to elements. You can only access the top element.

  • Memory fragmentation: If the stack is heavily used and elements are pushed and popped frequently, it can lead to memory fragmentation.



Conclusion


The stack memory is a block of successive memory locations that
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The block of successive memory location that is accessible in last in ...
Stack
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Which of the following statement is true for Power-of-2 allocators? Buddy System splits and recombines memory blocks in a predetermined manner during allocation and deallocation. No splitting of blocks takes place, also no effort is made to coalesce adjoining blocks to form larger blocks; when released, a block is simply returned to its free list. When a request is made for m bytes, the allocator first check the free list containing blocks whose size is 2i for the smallest value of i such that 2i ≥ m.if the free list is empty ,it checks the list containing blocks that are higher the next higher power of 2 in size on so on. an entire block is allocated to a request. When a request is made for m bytes. the system finds the smallest power of 2 that is ≥ m. Let this be 2i.if the list is empty, it checks the lists for block of size 2i+1.it takes one block off this list and splits it into two halves of size 2i.it put one of these blocks into the free list of size 2i,and uses the other block to satisfy the request.

Which of the following statement is true for buddy system allocators? Buddy System splits and recombines memory blocks in a predetermined manner during allocation and deallocation. No splitting of blocks takes place, also no effort is made to coalesce adjoining blocks to form larger blocks; when released, a block is simply returned to its free list. When a request is made for m bytes, the allocator first check the free list containing blocks whose size is 2i for the smallest value of i such that 2i ≥ m.if the free list is empty ,it checks the list containing blocks that are higher the next higher power of 2 in size on so on. an entire block is allocated to a request. When a request is made for m bytes. the system finds the smallest power of 2 that is ≥ m. Let this be 2i.if the list is empty, it checks the lists for block of size 2i+1.it takes one block off this list and splits it into two halves of size 2i.it put one of these blocks into the free list of size 2i,and uses the other block to satisfy the request.

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The block of successive memory location that is accessible in last in first out basis is called what?
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