How is memory allocation and management carried out in a system using a Memory Allocator?

In Go, memory management is handled by the built-in Memory Allocator, which automatically allocates and frees memory. When creating variables or objects, memory is allocated from the heap or stack depending on the scope and lifetime of the object.

Main features:

• Automatic memory management: Go uses a garbage collector that periodically frees unused memory.
• Memory allocation: The new and make functions are used to allocate memory for objects, slices, maps, and channels respectively.
• Optimization: The compiler analyzes where an object should be located — in the stack or heap — to minimize overhead.

Example of memory allocation:

package main

import "fmt"

func main() {
    // new allocates memory for an int and returns a pointer
    p := new(int)
    *p = 10
    fmt.Println(*p) // 10

    // make allocates and initializes a slice
    s := make([]int, 3)
    s[0] = 1
    fmt.Println(s) // [1 0 0]
}

Thus, the Memory Allocator in Go provides efficient and safe memory management without the need for manual freeing.