command: snapshot stats on memory footprint

commands.lua

@@ -59,6 +59,7 @@ Commands = {
     'reload all from disk',
     'delete note at cursor from disk (if possible)',
     'copy selection to clipboard (ctrl+c)',
+    'snapshot summary of memory use to disk',
   },
   editable={
     'exit editing (ctrl+e)',
@@ -513,6 +514,8 @@ function run_command(cmd, args)
     command.reload_note()
   elseif cmd == 'delete note at cursor from disk' then
     command.delete_note()
+  elseif cmd == 'snapshot summary of memory use to disk' then
+    command.snapshot_memory()
   -- editing
   elseif cmd == 'find in note' then
     command.send_key_to_current_pane('C-f', 'f')
@@ -1559,6 +1562,17 @@ function command.delete_note()
   command.reload_all()
 end
 
+function command.snapshot_memory()
+  -- load library on demand
+  if mri == nil then
+    mri = require('MemoryReferenceInfo')
+  end
+  collectgarbage('collect')
+  print(collectgarbage('count'))
+  mri.m_cMethods.DumpMemorySnapshot('./', 'mem', -1)
+  add_error('snapshot successfully dumped')
+end
+
 function command.send_key_to_current_pane(chord, key)
   if Cursor_pane.col < 1 then
     add_error('no current note')