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if not modules then modules = { } end modules ['trac-inf'] = {
version = 1.001,
comment = "companion to trac-inf.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
-- As we want to protect the global tables, we no longer store the timing
-- in the tables themselves but in a hidden timers table so that we don't
-- get warnings about assignments. This is more efficient than using rawset
-- and rawget.
local format, lower = string.format, string.lower
local clock = os.gettimeofday or os.clock -- should go in environment
local write_nl = texio.write_nl
statistics = statistics or { }
local statistics = statistics
statistics.enable = true
statistics.threshold = 0.05
local statusinfo, n, registered, timers = { }, 0, { }, { }
local function hastiming(instance)
return instance and timers[instance]
end
local function resettiming(instance)
timers[instance or "notimer"] = { timing = 0, loadtime = 0 }
end
local function starttiming(instance)
local timer = timers[instance or "notimer"]
if not timer then
timer = { }
timers[instance or "notimer"] = timer
end
local it = timer.timing
if not it then
it = 0
end
if it == 0 then
timer.starttime = clock()
if not timer.loadtime then
timer.loadtime = 0
end
end
timer.timing = it + 1
end
local function stoptiming(instance, report)
local timer = timers[instance or "notimer"]
local it = timer.timing
if it > 1 then
timer.timing = it - 1
else
local starttime = timer.starttime
if starttime then
local stoptime = clock()
local loadtime = stoptime - starttime
timer.stoptime = stoptime
timer.loadtime = timer.loadtime + loadtime
if report then
statistics.report("load time %0.3f",loadtime)
end
timer.timing = 0
return loadtime
end
end
return 0
end
local function elapsedtime(instance)
local timer = timers[instance or "notimer"]
return format("%0.3f",timer and timer.loadtime or 0)
end
local function elapsedindeed(instance)
local timer = timers[instance or "notimer"]
return (timer and timer.loadtime or 0) > statistics.threshold
end
local function elapsedseconds(instance,rest) -- returns nil if 0 seconds
if elapsedindeed(instance) then
return format("%s seconds %s", elapsedtime(instance),rest or "")
end
end
statistics.hastiming = hastiming
statistics.resettiming = resettiming
statistics.starttiming = starttiming
statistics.stoptiming = stoptiming
statistics.elapsedtime = elapsedtime
statistics.elapsedindeed = elapsedindeed
statistics.elapsedseconds = elapsedseconds
-- general function
function statistics.register(tag,fnc)
if statistics.enable and type(fnc) == "function" then
local rt = registered[tag] or (#statusinfo + 1)
statusinfo[rt] = { tag, fnc }
registered[tag] = rt
if #tag > n then n = #tag end
end
end
function statistics.show(reporter)
if statistics.enable then
if not reporter then reporter = function(tag,data,n) write_nl(tag .. " " .. data) end end
-- this code will move
local register = statistics.register
register("luatex banner", function()
return lower(status.banner)
end)
register("control sequences", function()
return format("%s of %s + %s", status.cs_count, status.hash_size,status.hash_extra)
end)
register("callbacks", function()
local total, indirect = status.callbacks or 0, status.indirect_callbacks or 0
return format("%s direct, %s indirect, %s total", total-indirect, indirect, total)
end)
collectgarbage("collect")
register("current memory usage", statistics.memused)
register("runtime",statistics.runtime)
for i=1,#statusinfo do
local s = statusinfo[i]
local r = s[2]()
if r then
reporter(s[1],r,n)
end
end
write_nl("") -- final newline
statistics.enable = false
end
end
local template, report_statistics, nn = nil, nil, 0 -- we only calcute it once
function statistics.showjobstat(tag,data,n)
if not logs then
-- sorry
elseif type(data) == "table" then
for i=1,#data do
statistics.showjobstat(tag,data[i],n)
end
else
if not template or n > nn then
template, n = format("%%-%ss - %%s",n), nn
report_statistics = logs.reporter("mkiv lua stats")
end
report_statistics(format(template,tag,data))
end
end
function statistics.memused() -- no math.round yet -)
local round = math.round or math.floor
return format("%s MB (ctx: %s MB)",round(collectgarbage("count")/1000), round(status.luastate_bytes/1000000))
end
starttiming(statistics)
function statistics.formatruntime(runtime) -- indirect so it can be overloaded and
return format("%s seconds", runtime) -- indeed that happens in cure-uti.lua
end
function statistics.runtime()
stoptiming(statistics)
return statistics.formatruntime(elapsedtime(statistics))
end
function statistics.timed(action,report)
report = report or logs.reporter("system")
starttiming("run")
action()
stoptiming("run")
report("total runtime: %s",elapsedtime("run"))
end
-- where, not really the best spot for this:
commands = commands or { }
function commands.resettimer(name)
resettiming(name or "whatever")
starttiming(name or "whatever")
end
function commands.elapsedtime(name)
stoptiming(name or "whatever")
context(elapsedtime(name or "whatever"))
end
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