I read on the most operating systems, the addresses in the memory begin at the highest level, so I'm wondering Stacks, heaps and global memory all fall under the same order ..?
If I made ...
Local variables created
localObject object Local objects must be 0xfffffe
or the heap or pile is completely different
addresses in memory at highest
Are the addresses of homes on your road ranging from highest to lowest, or from lowest to highest? Okay, it depends on how you're running.
Just like the mailing address, the memory address is not actually ordered at all. Each address identifies a unique location in memory (at least the concept is. We will ignore a fragmented or virtual memory for a moment).
But when your mail carrier delivers daily mail, then it is most likely to work either in the lowest or lowest-order order (perhaps both, on the one side of the road and On the other hand) It is rather more efficient than going home from home randomly, besides it, it makes the carrier's task very simple if it was going home from home in a random order, it would be difficult to see Have visited the house, and who Also if you need delivery, he just walked in order, then the position of the truck needs to keep track.
A stack is similar to this, it does not capture arbitrary posts in memory, but in its place is the first position, and the subsequent posts are followed in logical order. In this way, a stack pointer (often "SP") is required to track everyone who is capturing stack locations and which are free.
A pile is essentially different, though. While a stack has naturally pre-ordered-order order, a pile is naturally anodised. Heap memory can be allocated and distributed at any time. The earlier allocation can increase the allocation later. Therefore one should be able to allocate the pile, arbitrary address categories, and keep track of them all.
The heap and stack that operates in different ways should capture the different areas of memory. In your example, a second stack allocation will overwrite the memory captured by your heap allocation. Obviously, this would be a bad thing, and it is referred to as one.
Most modern CPUs have all the necessary facilities to keep stack memory and heap memory is completely different. This is where memory segments and virtual memory play. On some platforms, stacks and piles can be identified by the same address range , while still capturing different areas of physical memory or secondary storage, how this works out of the scope of this post Is the discussion of
Most modern operating systems do not actually do this, however, more commonly, a "flat" address space is used, where all addresses, stacks, piles , Code, or whatever,
In a flat address space, the same scheme of separating the stack and heap is used, which was used in the ancient CPU. There are no memory divisions or virtualization Confirms: stack memory (grows from high addresses) from "above", and grows from the bottom of the Map Memory (lower address). A definite point between both of them can be chosen to the extent of both, and when there is a point, then there is an error - either stack overflow or memory Out of .
Of course, this description is a huge simplification, but hopefully it will have a better basic understanding.
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