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-- filename : luat-tra.lua
-- comment : companion to luat-lib.tex
-- author : Hans Hagen, PRAGMA-ADE, Hasselt NL
-- copyright: PRAGMA ADE / ConTeXt Development Team
-- license : see context related readme files
-- the <anonymous> tag is kind of generic and used for functions that are not
-- bound to a variable, like node.new, node.copy etc (contrary to for instance
-- node.has_attribute which is bound to a has_attribute local variable in mkiv)
if not versions then versions = { } end versions['luat-tra'] = 1.001
debugger = { }
local counters = { }
local names = { }
local getinfo = debug.getinfo
local format = string.format
-- one
local function hook()
local f = getinfo(2,"f").func
local n = getinfo(2,"Sn")
-- if n.what == "C" and n.name then print (n.namewhat .. ': ' .. n.name) end
if f then
local cf = counters[f]
if cf == nil then
counters[f] = 1
names[f] = n
else
counters[f] = cf + 1
end
end
end
local function getname(func)
local n = names[func]
if n then
if n.what == "C" then
return n.name or '<anonymous>'
else
-- source short_src linedefined what name namewhat nups func
local name = n.name or n.namewhat or n.what
if not name or name == "" then name = "?" end
return format("%s : %s : %s", n.short_src or "unknown source", n.linedefined or "--", name)
end
else
return "unknown"
end
end
function debugger.showstats(printer,threshold)
printer = printer or texio.write or print
threshold = threshold or 0
local total, grandtotal, functions = 0, 0, 0
printer("\n") -- ugly but ok
-- table.sort(counters)
for func, count in pairs(counters) do
if count > threshold then
local name = getname(func)
if not name:find("for generator") then
printer(format("%8i %s", count, name))
total = total + count
end
end
grandtotal = grandtotal + count
functions = functions + 1
end
printer(format("functions: %s, total: %s, grand total: %s, threshold: %s\n", functions, total, grandtotal, threshold))
end
-- two
--~ local function hook()
--~ local n = getinfo(2)
--~ if n.what=="C" and not n.name then
--~ local f = tostring(debug.traceback())
--~ local cf = counters[f]
--~ if cf == nil then
--~ counters[f] = 1
--~ names[f] = n
--~ else
--~ counters[f] = cf + 1
--~ end
--~ end
--~ end
--~ function debugger.showstats(printer,threshold)
--~ printer = printer or texio.write or print
--~ threshold = threshold or 0
--~ local total, grandtotal, functions = 0, 0, 0
--~ printer("\n") -- ugly but ok
--~ -- table.sort(counters)
--~ for func, count in pairs(counters) do
--~ if count > threshold then
--~ printer(format("%8i %s", count, func))
--~ total = total + count
--~ end
--~ grandtotal = grandtotal + count
--~ functions = functions + 1
--~ end
--~ printer(format("functions: %s, total: %s, grand total: %s, threshold: %s\n", functions, total, grandtotal, threshold))
--~ end
-- rest
function debugger.savestats(filename,threshold)
local f = io.open(filename,'w')
if f then
debugger.showstats(function(str) f:write(str) end,threshold)
f:close()
end
end
function debugger.enable()
debug.sethook(hook,"c")
end
function debugger.disable()
debug.sethook()
--~ counters[debug.getinfo(2,"f").func] = nil
end
function debugger.tracing()
local n = tonumber(os.env['MTX.TRACE.CALLS']) or tonumber(os.env['MTX_TRACE_CALLS']) or 0
if n > 0 then
function debugger.tracing() return true end ; return true
else
function debugger.tracing() return false end ; return false
end
end
--~ debugger.enable()
--~ print(math.sin(1*.5))
--~ print(math.sin(1*.5))
--~ print(math.sin(1*.5))
--~ print(math.sin(1*.5))
--~ print(math.sin(1*.5))
--~ debugger.disable()
--~ print("")
--~ debugger.showstats()
--~ print("")
--~ debugger.showstats(print,3)
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