Unix Memory Model
There are some basic regions ("segments") provided by all Unix variants:- Stack: (Variable size) This is where information about function call sequences is stored. There is microprocessor support for the stack.
- Code: (Fixed size) The area of memory containing machine code instructions. Typically r+x permissions. Aka the text segment.
- Data: (Fixed size) The area of memory containing initialized data. This includes static variables, string constants, etc.
- BSS: (Variable size) The area of memory containing uninitialized data. This is where "heap allocated" objects live.
