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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 type, tonumber, select = type, tonumber, select
local format, lower = string.format, string.lower
local concat = table.concat
local clock = os.gettimeofday or os.clock -- should go in environment
local setmetatableindex = table.setmetatableindex
local serialize = table.serialize
local formatters = string.formatters
statistics = statistics or { }
local statistics = statistics
statistics.enable = true
statistics.threshold = 0.01
local statusinfo, n, registered, timers = { }, 0, { }, { }
setmetatableindex(timers,function(t,k)
local v = { timing = 0, loadtime = 0 }
t[k] = v
return v
end)
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"]
local it = timer.timing or 0
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)
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
timer.timing = 0
return loadtime
end
end
return 0
end
local function elapsed(instance)
if type(instance) == "number" then
return instance or 0
else
local timer = timers[instance or "notimer"]
return timer and timer.loadtime or 0
end
end
local function elapsedtime(instance)
return format("%0.3f",elapsed(instance))
end
local function elapsedindeed(instance)
return elapsed(instance) > statistics.threshold
end
local function elapsedseconds(instance,rest) -- returns nil if 0 seconds
if elapsedindeed(instance) then
return format("%0.3f seconds %s", elapsed(instance),rest or "")
end
end
statistics.hastiming = hastiming
statistics.resettiming = resettiming
statistics.starttiming = starttiming
statistics.stoptiming = stoptiming
statistics.elapsed = elapsed
statistics.elapsedtime = elapsedtime
statistics.elapsedindeed = elapsedindeed
statistics.elapsedseconds = elapsedseconds
-- general function .. we might split this module
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
local report = logs.reporter("mkiv lua stats")
function statistics.show()
if statistics.enable then
-- this code will move
local register = statistics.register
register("used platform", function()
local mask = lua.mask or "ascii"
return format("%s, type: %s, binary subtree: %s, symbol mask: %s (%s)",
os.platform or "unknown",os.type or "unknown", environment.texos or "unknown",
mask,mask == "utf" and "τεχ" or "tex")
end)
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)
if jit then
local status = { jit.status() }
if status[1] then
register("luajit status", function()
return concat(status," ",2)
end)
end
end
-- so far
-- collectgarbage("collect")
register("current memory usage",statistics.memused)
register("runtime",statistics.runtime)
logs.newline() -- initial newline
for i=1,#statusinfo do
local s = statusinfo[i]
local r = s[2]()
if r then
report("%s: %s",s[1],r)
end
end
-- logs.newline() -- final newline
statistics.enable = false
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
local report = logs.reporter("system")
function statistics.timed(action)
starttiming("run")
action()
stoptiming("run")
report("total runtime: %s seconds",elapsedtime("run"))
end
-- goodie
function statistics.tracefunction(base,tag,...)
for i=1,select("#",...) do
local name = select(i,...)
local stat = { }
local func = base[name]
setmetatableindex(stat,function(t,k) t[k] = 0 return 0 end)
base[name] = function(n,k,v) stat[k] = stat[k] + 1 return func(n,k,v) end
statistics.register(formatters["%s.%s"](tag,name),function() return serialize(stat,"calls") end)
end
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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