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--[[--------------------------------------------------------------------
bench_llex.lua
Benchmark test for llex.lua
This file is part of Yueliang.
Copyright (c) 2006 Kein-Hong Man <khman@users.sf.net>
The COPYRIGHT file describes the conditions
under which this software may be distributed.
See the ChangeLog for more information.
----------------------------------------------------------------------]]
dofile("../lzio.lua")
dofile("../llex.lua")
luaX:init()
------------------------------------------------------------------------
-- load in a standard set of sample files
-- * file set is 5.0.3 front end set sans luac.lua
------------------------------------------------------------------------
local fileset, totalsize = {}, 0
for fn in string.gmatch([[
../../orig-5.0.3/lcode.lua
../../orig-5.0.3/ldump.lua
../../orig-5.0.3/llex.lua
../../orig-5.0.3/lopcodes.lua
../../orig-5.0.3/lparser.lua
../../orig-5.0.3/lzio.lua
]], "%S+") do
fileset[#fileset+1] = fn
end
for i = 1, #fileset do
local fn = fileset[i]
local inf = io.open(fn, "rb")
if not inf then
error("failed to open "..fn.." for reading")
end
local data = inf:read("*a")
local data_sz = #data
inf:close()
if not data or data_sz == 0 then
error("failed to read data from "..fn.." or file is zero-length")
end
totalsize = totalsize + data_sz
fileset[i] = data
end
------------------------------------------------------------------------
-- benchmark tester
------------------------------------------------------------------------
local DURATION = 5 -- how long the benchmark should run
local L = {} -- LuaState
local LS = {} -- LexState
local time = os.time
local lexedsize = 0
local tnow, elapsed = time(), 0
while time() == tnow do end -- wait for second to click over
tnow = time()
while true do
for i = 1, #fileset do
------------------------------------------------------------
local chunk = fileset[i]
local z = luaZ:init(luaZ:make_getS(chunk), nil)
luaX:setinput(L, LS, z, "=string")
while true do
LS.t.token = luaX:llex(LS, LS.t)
local tok, seminfo = LS.t.token, LS.t.seminfo
if tok == "TK_EOS" then break end
end
------------------------------------------------------------
lexedsize = lexedsize + #chunk
if time() > tnow then
tnow = time()
elapsed = elapsed + 1
if elapsed >= DURATION then
-- report performance of lexer
lexedsize = lexedsize / 1024
local speed = lexedsize / DURATION
print("Lexer performance:")
print("Size of data lexed (KB): "..string.format("%.1f", lexedsize))
print("Speed of lexer (KB/s): "..string.format("%.1f", speed))
-- repeat until user breaks program
elapsed = 0
end
end
------------------------------------------------------------
end--for
end--while
-- end of script
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