This project is a short example about how to analyze memory management in Rust, working with both stack and heap.
Instalation
cargo install
Running
cargo run
Building
cargo build
target folder as default output
For debugging purposes, gdb will be used to analyze the memory management process
Start GDB with TUI
gbd -tui
Load Symbol Table from compiled file to set Debuggers with GDB
file target/debug/memory-management
List Functions and Code
list
with loaded symbols from file command
Place Breakpoint using gdb
b stack_only
Run file with gdb after placing Breakpoints
r
with loaded symbols from file command
the file should run and should stop in your first breakpoint
Inspect Stack in a given moment
bt <number of stacked calls>
Inspect Local Variables
info locals
Inspect Arguments in a given Function
info args
Proceed with gdb to next line
n
Difference between a variable in stack and a variable allocated in heap
For the dynamic allocation, we're using Box, which is a smart pointer in Rust
e is actually showing his address on the heap
Dereference to read a dynamically stored variable
x 0x55555559ead0
output: 0x55555559ead0: 0x00000007
The read can automatically format the value as a digit for example, using: x /d 0x55555559ead0
Continue to next breakpoint
c