lua_memdump

A tool to dump lua state memory or analyzes difference of two memory snapshot. Very helpful to analyzes your program's memory layout or dectect memory leak.

usage & example

• dump memory

local md = require "memdump"

-- if no file name is specified,all result write to stdout
md:dump( "dump.log" )

• analyzes difference of two memory snapshot

local md = require "memdump"
md:initlize() -- initlize and make first memory snapshot

-- do something ...

-- make second memory and analyzes the difference
-- if no file name is specified,all result write to stdout
md:diff( "diff.log" )

See "test.lua" for more.

The output looks like:

table: 0x17569a0	[registry].[2].bar_tbl	1
table: 0x1756a90	[registry].[2].foo_f.foo	1
function: 0x1756b90	[registry].[2].foo_f	1
table: 0x17569e0	[registry].[2].bar_tbl.[table: 0x1751720]	1
table: 0x17517a0	[registry].[2].bar_tbl.[key].[metatable]	1
thread: 0x1756cf8	[registry].[2].co	1
table: 0x1751720	[registry].[2].bar_tbl.[key]	2

Every line represent a value,column means:
[type:address] [reference point] [reference count]

note

• only compliex values (like function,userdata,thread,table) being analyzed
• local variable not being analyzed