GDB Plugin Upgrade part2: memory leak detection and other memory tools

[XuNeo]

Note: Please adhere to Contributing Guidelines.

Summary

This PR is based on #14843 to minimize conflicts. I will rebase once that one is merged. The changes are from commit 679e38d.

In this PR, @anjiahao1 introduces a powerful tool to automatically detect memory leak based on offline core dump or online gdb connection. There are follow up commits that optimizes memleak detection speed.

The memfrag from @Gary-Hobson is used to calculate memory fragmentation rate, so we can have a relatively unified number to check the fragmentation rate.

The memmap from @Gary-Hobson can visually show the memory status.

This PR also includes miscellaneous bug fixes for utils module such as compatibility for older version of GDB etc.

Impact

New feature and bug fixes.

Testing

I tested on qemu arm64 with below additional configuration. Note that -g3 is needed in order to parse the macro values which are needed by the tool.

+CONFIG_MM_BACKTRACE=16
+CONFIG_MM_BACKTRACE_DEFAULT=y
+CONFIG_MM_BACKTRACE_SKIP=1
+CONFIG_MM_HEAP_MEMPOOL_BACKTRACE_SKIP=3
+CONFIG_MM_HEAP_MEMPOOL_THRESHOLD=256
+CONFIG_DEBUG_SYMBOLS_LEVEL="-g3"
+CONFIG_DEBUG_MM=y

1. compile and launch

cmake -DCMAKE_EXPORT_COMPILE_COMMANDS=1 -Bbuild -GNinja -DBOARD_CONFIG=boards/arm64/qemu/qemu-armv8a/configs/nsh_smp nuttx

 qemu-system-aarch64 -smp 4 -cpu cortex-a53 -semihosting -nographic -machine virt,virtualization=on,gic-version=3 -net none -chardev stdio,id=con,mux=on -serial chardev:con -mon chardev=con,mode=readline -kernel build/nuttx -gdb tcp::1127

2. Connect GDB and do analysis
   gdb-multiarch build/nuttx -ex "tar rem:1127" -ex "source nuttx/tools/gdb/__init__.py"
3. execute memleak command

(gdb) memleak
Searching for leaked memory, please wait a moment
Searching in global variables 0x40433000 ~ 0x40448000
Searching in grey memory
Search all memory use 0.03 seconds

Leak catch!, use '*' mark pid is not exist:
   CNT   PID        Size    Sequence            Address Callstack
     2     0         160           0         0x40454b80
*    1     4         256          34         0x40459290  [0x000000000402c09d8] <mm_malloc+48>       /home/neo/projects/nuttx/nuttx/mm/mm_heap/mm_malloc.c:186
                                                         [0x000000000402c153c] <malloc+28>          /home/neo/projects/nuttx/nuttx/mm/umm_heap/umm_malloc.c:66
                                                         [0x000000000402f15bc] <hello_main+16>      /home/neo/projects/nuttx/apps/examples/hello/hello_main.c:39
                                                         [0x000000000402d3458] <nxtask_startup+48>  /home/neo/projects/nuttx/nuttx/libs/libc/sched/task_startup.c:72
                                                         [0x000000000402cdf90] <nxtask_start+208>   /home/neo/projects/nuttx/nuttx/sched/task/task_start.c:75

Alloc 3 count,have 2 some backtrace leak, total leak memory is 256 bytes
Finished in 0.06 seconds
(gdb)

Note the leak is generated by example in hello_main.c:

--- a/examples/hello/hello_main.c
+++ b/examples/hello/hello_main.c
@@ -35,6 +35,6 @@
 
 int main(int argc, FAR char *argv[])
 {
-  printf("Hello, World!!\n");
+  printf("Hello, World!!: %p\n", malloc(123));
   return 0;
 }

[github-actions]

This PR exceeds the recommended size of 1000 lines. Please make sure you are NOT addressing multiple issues with one PR. Note this PR might be rejected due to its size.

[github-actions]

This PR exceeds the recommended size of 1000 lines. Please make sure you are NOT addressing multiple issues with one PR. Note this PR might be rejected due to its size.

[hartmannathan]

This looks very cool! I can't wait to try it! Thanks

[github-actions]

This PR exceeds the recommended size of 1000 lines. Please make sure you are NOT addressing multiple issues with one PR. Note this PR might be rejected due to its size.

[github-actions]

This PR exceeds the recommended size of 1000 lines. Please make sure you are NOT addressing multiple issues with one PR. Note this PR might be rejected due to its size.

[github-actions]

This PR exceeds the recommended size of 1000 lines. Please make sure you are NOT addressing multiple issues with one PR. Note this PR might be rejected due to its size.