beta 2009.05.28 11:23

1 files changed, 149 insertions, 0 deletions

diff --git a/tex/context/base/trac-inf.lua b/tex/context/base/trac-inf.lua
new file mode 100644
index 000000000..41a9e7b48
--- /dev/null
+++ b/tex/context/base/trac-inf.lua
@@ -0,0 +1,149 @@
+if not modules then modules = { } end modules ['trac-inf'] = {
+    version   = 1.001,
+    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"
+}
+
+local format = string.format
+
+local statusinfo, n, registered = { }, 0, { }
+
+statistics = statistics or { }
+
+statistics.enable    = true
+statistics.threshold = 0.05
+
+-- timing functions
+
+local clock = os.gettimeofday or os.clock
+
+function statistics.hastimer(instance)
+    return instance and instance.starttime
+end
+
+function statistics.starttiming(instance)
+    if instance then
+        local it = instance.timing
+        if not it then
+            it = 0
+        end
+        if it == 0 then
+            instance.starttime = clock()
+            if not instance.loadtime then
+                instance.loadtime = 0
+            end
+        end
+        instance.timing = it + 1
+    end
+end
+
+function statistics.stoptiming(instance, report)
+    if instance then
+        local it = instance.timing
+        if it > 1 then
+            instance.timing = it - 1
+        else
+            local starttime = instance.starttime
+            if starttime then
+                local stoptime = clock()
+                local loadtime = stoptime - starttime
+                instance.stoptime = stoptime
+                instance.loadtime = instance.loadtime + loadtime
+                if report then
+                    statistics.report("load time %0.3f",loadtime)
+                end
+                instance.timing = 0
+                return loadtime
+            end
+        end
+    end
+    return 0
+end
+
+function statistics.elapsedtime(instance)
+    return format("%0.3f",(instance and instance.loadtime) or 0)
+end
+
+function statistics.elapsedindeed(instance)
+    local t = (instance and instance.loadtime) or 0
+    return t > statistics.threshold
+end
+
+-- 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) texio.write_nl(tag .. " " .. data) end end
+        -- this code will move
+        local register = statistics.register
+        register("luatex banner", function()
+            return string.lower(status.banner)
+        end)
+        register("control sequences", function()
+            return format("%s of %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("direct: %s, indirect: %s, total: %s", total-indirect, indirect, total)
+        end)
+        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
+        statistics.enable = false
+    end
+end
+
+function statistics.show_job_stat(tag,data,n)
+    texio.write_nl(format("%-15s: %s - %s","mkiv lua stats",tag:rpadd(n," "),data))
+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
+
+if statistics.runtime then
+    -- already loaded and set
+elseif luatex and luatex.starttime then
+    statistics.starttime = luatex.starttime
+    statistics.loadtime = 0
+    statistics.timing = 0
+else
+    statistics.starttiming(statistics)
+end
+
+function statistics.runtime()
+    statistics.stoptiming(statistics)
+    return statistics.formatruntime(statistics.elapsedtime(statistics))
+end
+
+function statistics.formatruntime(runtime)
+    return format("%s seconds", statistics.elapsedtime(statistics))
+end
+
+function statistics.timed(action,report)
+    local timer = { }
+    report = report or logs.simple
+    statistics.starttiming(timer)
+    action()
+    statistics.stoptiming(timer)
+    report("total runtime: %s",statistics.elapsedtime(timer))
+end