Software / code / prosody
Diff
tools/linedebug.lua @ 11193:5850d24a4ad3
tools/linedebug: Print each line of source executed
The extremely verbose debug output. Nice for getting some idea which
code runs most often, or where it pauses for no reason etc.
| author | Kim Alvefur <zash@zash.se> |
|---|---|
| date | Wed, 28 Oct 2020 23:05:15 +0100 |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/tools/linedebug.lua Wed Oct 28 23:05:15 2020 +0100 @@ -0,0 +1,18 @@ +local data = {} +local getinfo = debug.getinfo; +local function linehook(ev, li) + local S = getinfo(2, "S"); + if S and S.source and S.source:match"^@" then + local file = S.source:sub(2); + local lines = data[file]; + if not lines then + lines = {}; + data[file] = lines; + for line in io.lines(file) do + lines[#lines+1] = line; + end + end + io.stderr:write(ev, " ", file, " ", li, " ", lines[li], "\n"); + end +end +debug.sethook(linehook, "l");
