Lua Profiler 工具(基于PepperfishProfiler 修改)

注：本文例子使用的是luajit2.0.5版本，原生lua版本可能有差异，但差异不大。

写在前面：

lua性能分析PepperfishProfiler挺好用的，主要灵活，分析的数据也清晰，有嵌套调用的耗时信息。

其他lua分析工具也可见。

本脚本的基于PepperfishProfiler做修改的。

为什么需要修改：

复杂的lua逻辑导致PepperfishProfiler分析结果不准确，

原因：lua的debug.sethook(hook_call, "cr" )的call和return没对应导致。而PepperfishProfiler没对这些情况做处理。

具体如图

注意FunD函数返回一个函数，导致debug信息中line:797函数名与代码中不一致，且return时只有一个FunD:797,其实是return了FunC，丢失的return FunD。

正文：

本工具的所有修改都是为了解决这个问题0.0。

本工具只适用于Call模式的分析。

对原工具的输出数据做了优化。

先上代码

--[[Example usage:profiler = newProfiler(false)profiler:start()< call some functions that take time >profiler:stop()local outfile = io.open( "profile.txt", "w+" )profiler:report( outfile )outfile:close()--]]--
-- All profiler related stuff is stored in the top level table '_profiler'
--
_profiler = {}--
-- newProfiler() creates a new profiler object for managing
-- the profiler and storing state.  Note that only one profiler
-- object can be executing at one time.
--
function newProfiler(bRecordCFun)if _profiler.running thenprint("Profiler already running.")returnendlocal newprof = {}for k,v in pairs(_profiler) donewprof[k] = vendnewprof.variant = "call"newprof.bRecordCFun = bRecordCFun==nil and true or false; --记录C方法return newprof
end--
-- This function starts the profiler.  It will do nothing
-- if this (or any other) profiler is already running.
--
function _profiler.start(self)if _profiler.running thenreturnend-- Start the profiler. This begins by setting up internal profiler state_profiler.running = selfself.rawstats = {}self.callstack = {}self.currPos_ar = nil; --定位当前执行函数self.cache_lineInfo = {};self.cache_startTime = os.clock();self.lineProfiler_cost_time = 0;debug.sethook( _profiler_hook_wrapper_by_call, "crl" )
end--
-- This function stops the profiler.  It will do nothing
-- if a profiler is not running, and nothing if it isn't
-- the currently running profiler.
--
function _profiler.stop(self)if _profiler.running ~= self thenreturnend-- Stop the profiler.debug.sethook( nil )_profiler.running = nilCppLog("[all profiler time]"..os.clock()-self.cache_startTime.."ms")-- CppLog("[lineProfiler_cost_time]"..self.lineProfiler_cost_time.."ms")
end--
-- Simple wrapper to handle the hook.  You should not
-- be calling this directly. Duplicated to reduce overhead.
--
function _profiler_hook_wrapper_by_call(action)if _profiler.running == nil thendebug.sethook( nil )end_profiler.running:_internal_profile_by_call(action)
end--
-- This is the main by-function-call function of the profiler and should not
-- be called except by the hook wrapper
--
function _profiler._internal_profile_by_call(self,action)-- Since we can obtain the 'function' for the item we've had call us, we-- can use that...local caller_info = debug.getinfo( 3 )if caller_info == nil thenprint "No caller_info"returnendif self.bRecordCFun == false and caller_info.what == "C" thenreturn;endself.profile_start_Time = os.clock();--[[caller_info:table: 0x00472a38 = {["linedefined"] = 797,["currentline"] = 797,["func"] = function: 0x0013dd50,["isvararg"] = false,["namewhat"] = "global"["lastlinedefined"] = 799,["source"] = "@GamePlay\ServerEntry.lua"["nups"] = 0,["what"] = "Lua"["nparams"] = 0,["name"] = "zxjFunD"["short_src"] = "GamePlay\ServerEntry.lua"}call return 不一致测试:function zxjFunA()for i = 1, 100000, 1 dolocal a = {}endendfunction zxjFunB()for i = 1, 100000, 1 dolocal a = {}endzxjFunA()endfunction zxjFunC()zxjFunB()endfunction zxjFunD()for i = 1, 100000, 1 dolocal a = {}endreturn zxjFunC() --直接return fun 会导致return 不一致endfunction zxjFunE()zxjFunD();endcall: zxjFunE();结果：[CppLog] Call callTimesss:1 func:function: 0x00b6a598 linedefined:806 funName:zxjFunE[CppLog][CppLog] Call callTimesss:2 func:function: 0x00b6a580 linedefined:800 funName:zxjFunD[CppLog][CppLog] Call callTimesss:3 func:function: 0x00b6a568 linedefined:797 funName:zxjFunD --此处call 的funName其实应该是zxjFunC[CppLog][CppLog] Call callTimesss:4 func:function: 0x00b6a550 linedefined:791 funName:zxjFunB[CppLog][CppLog] Call callTimesss:5 func:function: 0x00b6a538 linedefined:786 funName:zxjFunA[CppLog][CppLog] Return callTimesss:5 func:function: 0x00b6a538 linedefined:786 funName:zxjFunA[CppLog][CppLog] Return callTimesss:4 func:function: 0x00b6a550 linedefined:791 funName:zxjFunB[CppLog][CppLog] Return callTimesss:3 func:function: 0x00b6a568 linedefined:797 funName:zxjFunD --缺少一次return 本次return其实是zxjFunC[CppLog][CppLog] Return callTimesss:2 func:function: 0x00b6a598 linedefined:806 funName:zxjFunE]]if action == "line" thenself.cache_lineInfo.source = caller_info.source;  --记录最近一次逐行调用信息self.cache_lineInfo.line = caller_info.currentline;self.lineProfiler_cost_time = self.lineProfiler_cost_time + os.clock() - self.profile_start_Time;return;endCppLog("")-- CppLog(action.." name:"..caller_info.source.." "..caller_info.name..caller_info.linedefined.." currentline:"..caller_info.currentline)CppLog(action.." name:"..caller_info.name.." :"..caller_info.linedefined)if action == "call" then-- CppLog("[cache_lineInfo] source:"..self.cache_lineInfo.source.. " line:"..self.cache_lineInfo.line);-- add line profiler cost time to currPos_arif nil ~= self.currPos_ar thenself.currPos_ar.line_cost_time = self.currPos_ar.line_cost_time + self.lineProfiler_cost_time;self.lineProfiler_cost_time = 0;end-- TO: get realy parent function for this call-- 判定call的位置是否当前定位函数的内部--[[当前记录的执行函数不一定时此次call的父函数的原因： call和return的不一致eg:fun A()  B(); return 0; endfun B() return C()  endfun C() return 0;  endA();call A,call B,call C,return C,return A,加入D函数:fun A()  B(); D();return 0; endfun B() return C()  endfun C() return 0;  endfun D() return 0;  endA();call A,call B,call C,return C,no return B,call D,没执行该处理，则 D 的父函数视为B，但实际情况D的父函数可以为A]]while nil ~= self.currPos_ar and(self.cache_lineInfo.source ~= self.currPos_ar.source or(self.cache_lineInfo.line < self.currPos_ar.linedefined orself.cache_lineInfo.line > self.currPos_ar.lastlinedefined)) doself:_one_fun_return(self.currPos_ar.caller_info);endlocal latest_ar = self.currPos_ar-- Are we allowed to profile this function?local should_not_profile = 0for k,v in pairs(self.prevented_functions) doif k == caller_info.func thenshould_not_profile = vendend-- Also check the top activation record...if latest_ar thenif latest_ar.should_not_profile == 2 thenshould_not_profile = 2endend-- if latest_ar then--   CppLog("[parent]name:"..latest_ar.fun_name..latest_ar.linedefined);-- end-- Making a call...local this_ar = {}this_ar.should_not_profile = should_not_profilethis_ar.parent_ar = latest_arthis_ar.anon_child = 0this_ar.name_child = 0this_ar.children = {}this_ar.children_time = {}this_ar.clock_start = self.profile_start_Timethis_ar.func = caller_info.func;this_ar.source = caller_info.source;this_ar.linedefined = caller_info.linedefined;this_ar.lastlinedefined = caller_info.lastlinedefined;this_ar.fun_name = caller_info.name or tostring(caller_info.func);this_ar.caller_info = caller_info;this_ar.line_cost_time = 0; --行分析消耗时间-- Last thing to do on a call is to insert this onto the ar stack...table.insert( self.callstack, this_ar )-- CppLog("len:"..#self.callstack)--fun call update currposself.currPos_ar = this_ar;-- CppLog("[setCurPos2] name:"..self.currPos_ar.fun_name..self.currPos_ar.linedefined.."["..self.currPos_ar.linedefined..","..self.currPos_ar.lastlinedefined.."] source:"..self.currPos_ar.source)this_ar.proflier_time = os.clock() - self.profile_start_Time; --call 的分析消耗时间-- CppLog(this_ar.fun_name..this_ar.linedefined.." proflier_time:"..this_ar.proflier_time);elseif action == "return" then-- add line profiler cost time to currPos_arif nil ~= self.currPos_ar thenself.currPos_ar.line_cost_time = self.currPos_ar.line_cost_time + self.lineProfiler_cost_time;self.lineProfiler_cost_time = 0;end-- 因为call return 不一致-- 需要将跳过的return做计算for i = #self.callstack, 1, -1 dolocal this_ar = self.callstack[i];self:_one_fun_return(this_ar.caller_info);if this_ar.func == caller_info.func or this_ar.linedefined == caller_info.linedefined thenbreak;endendend
endfunction _profiler._one_fun_return(self,caller_info)if #self.callstack <= 0 thenreturn;endlocal profile_return_start_Time = self.profile_start_Time;local this_ar = table.remove(self.callstack,#self.callstack);this_ar.clock_end = self.profile_start_Timethis_ar.this_time = this_ar.clock_end - this_ar.clock_start- this_ar.proflier_time   --减去自身call 和子函数call、return 的分析消耗时间- this_ar.line_cost_time  --减去自身函数内部的逐行分析消耗时间-- CppLog("[one_fun_return]name:"..this_ar.fun_name..this_ar.linedefined)-- Now, if we have a parent, update its call info...if this_ar.parent_ar then-- CppLog("[parent]name:"..this_ar.parent_ar.fun_name..this_ar.parent_ar.linedefined)local funcStrKey = this_ar.fun_name.."_"..this_ar.linedefined;this_ar.parent_ar.children[funcStrKey] =(this_ar.parent_ar.children[funcStrKey] or 0) + 1this_ar.parent_ar.children_time[funcStrKey] =(this_ar.parent_ar.children_time[funcStrKey] or 0 ) +this_ar.this_timeif this_ar.fun_name == nil thenthis_ar.parent_ar.anon_child =this_ar.parent_ar.anon_child + this_ar.this_timeelsethis_ar.parent_ar.name_child =this_ar.parent_ar.name_child + this_ar.this_timeendend-- Now if we're meant to record information about ourselves, do so...if this_ar.should_not_profile == 0 thenlocal inforec = self:_get_func_rec(this_ar.fun_name,this_ar.linedefined,this_ar.func)inforec.count = inforec.count + 1inforec.time = inforec.time + this_ar.this_timeinforec.anon_child_time = inforec.anon_child_time + this_ar.anon_childinforec.name_child_time = inforec.name_child_time + this_ar.name_childinforec.func_info = this_ar.caller_infoinforec.parent_info = ""if this_ar.parent_ar theninforec.parent_info = this_ar.parent_ar.source.." ["..this_ar.parent_ar.fun_name.."]:"..this_ar.parent_ar.linedefinedendfor k,v in pairs(this_ar.children) doinforec.children[k] = (inforec.children[k] or 0) + vinforec.children_time[k] =(inforec.children_time[k] or 0) + this_ar.children_time[k]endend-- CppLog(this_ar.fun_name..this_ar.linedefined.." this_time:"..this_ar.this_time.." proflier_time:"..this_ar.proflier_time);if this_ar.parent_ar thenlocal nowTime = os.clock();this_ar.parent_ar.proflier_time = this_ar.parent_ar.proflier_time+ this_ar.proflier_time --子函数调用的分析消耗+ (nowTime - profile_return_start_Time) --这次 return 的分析耗时this_ar.parent_ar.line_cost_time = this_ar.parent_ar.line_cost_time + this_ar.line_cost_time --传递子函数的逐行分析耗时self.profile_start_Time = nowTime;  --避免重复计算消耗-- CppLog("[parent]"..this_ar.parent_ar.fun_name..this_ar.parent_ar.linedefined.." proflier_time:"..this_ar.parent_ar.proflier_time);end--fun return update currposself.currPos_ar = self.callstack[#self.callstack];-- if self.currPos_ar then--   CppLog("[setCurPos1] name:"..self.currPos_ar.fun_name..self.currPos_ar.linedefined.."["..self.currPos_ar.linedefined..","..self.currPos_ar.lastlinedefined.."] source:"..self.currPos_ar.source)-- end
endfunction _profiler._get_func_rec(self,funName,linedefined,func)-- Find the function ref for 'func' (if force and not present, create one)local ret = self.rawstats[funName.."_"..linedefined]if ret == nil then-- Build a new function statistics tableret = {}ret.func = funcret.count = 0ret.time = 0ret.anon_child_time = 0ret.name_child_time = 0ret.children = {}ret.children_time = {}self.rawstats[funName.."_"..linedefined] = retendreturn ret
end--
-- This writes a profile report to the output file object.  If
-- sort_by_total_time is nil or false the output is sorted by
-- the function time minus the time in it's children.
--
function _profiler.report( self, outfile, sort_by_total_time )-- table_print(self.rawstats)outfile:write[[Lua Profile output created by profiler.lua. Copyright Pepperfish 2002+]]-- This is pretty awful.local terms = {}if self.variant == "time" thenterms.capitalized = "Sample"terms.single = "sample"terms.pastverb = "sampled"elseif self.variant == "call" thenterms.capitalized = "Call"terms.single = "call"terms.pastverb = "called"elseassert(false)endlocal total_time = 0local ordering = {}for func,record in pairs(self.rawstats) dotable.insert(ordering, func)endif sort_by_total_time thentable.sort( ordering, function(a,b) return self.rawstats[a].time > self.rawstats[b].time end)elsetable.sort( ordering, function(a,b)local arec = self.rawstats[a] local brec = self.rawstats[b]local atime = arec.time - (arec.anon_child_time + arec.name_child_time)local btime = brec.time - (brec.anon_child_time + brec.name_child_time)return atime > btimeend)endfor i=1,table.getn(ordering) dolocal func = ordering[i]local record = self.rawstats[func]local thisfuncname = " " .. self:_pretty_name(func,true) .. " "-- if string.len( thisfuncname ) < 42 then--   thisfuncname =--     string.rep( "-", (42 - string.len(thisfuncname))/2 ) .. thisfuncname--   thisfuncname =--     thisfuncname .. string.rep( "-", 42 - string.len(thisfuncname) )-- endtotal_time = total_time + ( record.time - ( record.anon_child_time +record.name_child_time ) )outfile:write( "No."..i..string.rep( "-", 19 ) .. thisfuncname .. " [parent]" .. record.parent_info ..string.rep( "-", 19 ) .. "\n" )outfile:write( terms.capitalized.." count:         " ..string.format( "%4d", record.count ) .. "\n" )outfile:write( "Time spend total:       " ..string.format( "%4.3f", record.time ) .. "ms\n" )outfile:write( "Time spent in children: " ..string.format("%4.3f",record.anon_child_time+record.name_child_time) .."ms\n" )local timeinself =record.time - (record.anon_child_time + record.name_child_time)outfile:write( "Time spent in self:     " ..string.format("%4.3f", timeinself) .. "ms\n" )outfile:write( "Time spent per " .. terms.single .. ":  " ..string.format("%4.5f", record.time/record.count) .."ms/" .. terms.single .. "\n" )outfile:write( "Time spent in self per "..terms.single..": " ..string.format( "%4.5f", timeinself/record.count ) .. "ms/" ..terms.single.."\n" )-- Report on each child in the form-- Child  <funcname> called n times and took a.bslocal added_blank = 0local childrenlist = {} for k,v in pairs(record.children) doif self.prevented_functions[k] == nil orself.prevented_functions[k] == 0then-- if added_blank == 0 then--   outfile:write( "\n" ) -- extra separation line--   added_blank = 1-- endif record.children_time[k] ~= 0 thenlocal childrenInfo = {}childrenInfo.str =  "Child " .. self:_pretty_name(k) ..string.rep( " ", 41-string.len(self:_pretty_name(k)) ) .. " " ..terms.pastverb.." " .. string.format("%6d", v) .. " times. Took " ..string.format("%4.2f", record.children_time[k] ) .. "ms\n"childrenInfo.time = record.children_time[k];table.insert(childrenlist,childrenInfo);endendendtable.sort(childrenlist,function (a,b)return a.time > b.time;end)outfile:write( "\n" )for k, v in pairs(childrenlist) dooutfile:write(v.str);endoutfile:write( "\n" ) -- extra separation lineoutfile:flush()endoutfile:write( "\n\n" )outfile:write( "Total time spent in profiled functions: " ..string.format("%5.3g",total_time) .. "s\n" )outfile:write( [[END
]] )outfile:flush()
end--
-- This writes the profile to the output file object as
-- loadable Lua source.
--
function _profiler.lua_report(self,outfile)-- Purpose: Write out the entire raw state in a cross-referenceable form.local ordering = {}local functonum = {}for func,record in pairs(self.rawstats) dotable.insert(ordering, func)functonum[func] = table.getn(ordering)endoutfile:write("-- Profile generated by profiler.lua Copyright Pepperfish 2002+\n\n" )outfile:write( "-- Function names\nfuncnames = {}\n" )for i=1,table.getn(ordering) dolocal thisfunc = ordering[i]outfile:write( "funcnames[" .. i .. "] = " ..string.format("%q", self:_pretty_name(thisfunc)) .. "\n" )endoutfile:write( "\n" )outfile:write( "-- Function times\nfunctimes = {}\n" )for i=1,table.getn(ordering) dolocal thisfunc = ordering[i]local record = self.rawstats[thisfunc]outfile:write( "functimes[" .. i .. "] = { " )outfile:write( "tot=" .. record.time .. ", " )outfile:write( "achild=" .. record.anon_child_time .. ", " )outfile:write( "nchild=" .. record.name_child_time .. ", " )outfile:write( "count=" .. record.count .. " }\n" )endoutfile:write( "\n" )outfile:write( "-- Child links\nchildren = {}\n" )for i=1,table.getn(ordering) dolocal thisfunc = ordering[i]local record = self.rawstats[thisfunc]outfile:write( "children[" .. i .. "] = { " )for k,v in pairs(record.children) doif functonum[k] then -- non-recorded functions will be ignored nowoutfile:write( functonum[k] .. ", " )endendoutfile:write( "}\n" )endoutfile:write( "\n" )outfile:write( "-- Child call counts\nchildcounts = {}\n" )for i=1,table.getn(ordering) dolocal thisfunc = ordering[i]local record = self.rawstats[thisfunc]outfile:write( "children[" .. i .. "] = { " )for k,v in record.children doif functonum[k] then -- non-recorded functions will be ignored nowoutfile:write( v .. ", " )endendoutfile:write( "}\n" )endoutfile:write( "\n" )outfile:write( "-- Child call time\nchildtimes = {}\n" )for i=1,table.getn(ordering) dolocal thisfunc = ordering[i]local record = self.rawstats[thisfunc];outfile:write( "children[" .. i .. "] = { " )for k,v in pairs(record.children) doif functonum[k] then -- non-recorded functions will be ignored nowoutfile:write( record.children_time[k] .. ", " )endendoutfile:write( "}\n" )endoutfile:write( "\n\n-- That is all.\n\n" )outfile:flush()
end-- Internal function to calculate a pretty name for the profile output
function _profiler._pretty_name(self,func,bTitle)-- Only the data collected during the actual-- run seems to be correct.... why?local info = self.rawstats[ func ].func_info-- local info = debug.getinfo( func )local name = ""if info.what == "Lua" thenname = "L:"endif info.what == "C" thenname = "C:"endif info.what == "main" thenname = " :"endif info.name == nil thenname = name .. "<"..tostring(func) .. ">"elsename = name .. info.nameendif info.source thenname = name .. "@" .. info.sourceelseif info.what == "C" thenname = name .. "@?"elsename = name .. "@<string>"endendname = name .. ":"if info.what == "C" thenname = name .. "?"elsename = name .. info.linedefinedendif bTitle thenname = name .. " Root"endif info.name thenname = name .."  Fun:"..info.name;endreturn name
end--
-- This allows you to specify functions which you do
-- not want profiled.  Setting level to 1 keeps the
-- function from being profiled.  Setting level to 2
-- keeps both the function and its children from
-- being profiled.
--
-- BUG: 2 will probably act exactly like 1 in "time" mode.
-- If anyone cares, let me (zorba) know and it can be fixed.
--
function _profiler.prevent(self, func, level)self.prevented_functions[func] = (level or 1)
end_profiler.prevented_functions = {[_profiler.start] = 2,[_profiler.stop] = 2,[_profiler._internal_profile_by_call] = 2,[_profiler_hook_wrapper_by_call] = 2,[_profiler.prevent] = 2,[_profiler._get_func_rec] = 2,[_profiler.report] = 2,[_profiler.lua_report] = 2,[_profiler._pretty_name] = 2,
}local function _list_table(tb, table_list, level)local ret = ""local indent = string.rep(" ", level*4)for k, v in pairs(tb) dolocal quo = type(k) == "string" and "\"" or ""ret = ret .. indent .. "[" .. quo .. tostring(k) .. quo .. "] = "if type(v) == "table" thenlocal t_name = table_list[v]if t_name thenret = ret .. tostring(v) .. " -- > [\"" .. t_name .. "\"]\n"elsetable_list[v] = tostring(k)ret = ret .. "{\n"ret = ret .. _list_table(v, table_list, level+1)ret = ret .. indent .. "}\n"endelseif type(v) == "string" thenret = ret .. "\"" .. tostring(v) .. "\"\n"elseret = ret .. tostring(v) .. ",\n"endendlocal mt = getmetatable(tb)if mt then ret = ret .. "\n"local t_name = table_list[mt]ret = ret .. indent .. "<metatable> = "if t_name thenret = ret .. tostring(mt) .. " -- > [\"" .. t_name .. "\"]\n"elseret = ret .. "{\n"ret = ret .. _list_table(mt, table_list, level+1)ret = ret .. indent .. "}\n"endendreturn ret
end-------------------------------------------------------------------
-- Public functions
-------------------------------------------------------------------function table_tostring(tb)--print("table_tostring")if type(tb) ~= "table" thenprint("Sorry, it's not table, it is " .. type(tb) .. ".","table_Print")endlocal ret = " = {\n"local table_list = {}table_list[tb] = "root table"ret = ret .. _list_table(tb, table_list, 1)ret = ret .. "}"return ret
endfunction table_print(tb)if tb == nil thenprint("table_Print {}","table_Print")returnendif CppLog thenCppLog(tostring(tb) .. table_tostring(tb))end-- print(tostring(tb) .. table_tostring(tb))
end

主要对_internal_profile_by_call做了修改，

增加逐行勾子（测试逐行监听只会增加小量的时间消耗），

增加了定位当前执行函数 currPos_ar ，为了准确定位函数调用的嵌套关系，

增加了call、return、line分析的耗时记录，减少因分析带来的时间消耗影响分析结果，但无法做到全部消耗时间剔除，数据结果的时间值只适用于耗时比例分析，无法做为时间的运行时间。

修改_get_func_rec的匹配条件

注：毫秒单位其实有点大，建议重写os.clock 返回微妙，提供准确性

注：CppLog 是自己封装的log，其实就是print

注释已经写了一些调试信息和思路，这里做一些补充：

1.为什么要增加逐行勾子：

为了记录call的最后一次行数调用的信息cache_lineInfo，可以确定ache_lineInfo一定是本次call的父函数，

根据这个信息和调用堆栈callstack，可以找到本次call的父函数，并且能确定该父函数前的其他堆栈函数已经执行结束，但是没有返回return勾子，所以将这些行数做为return处理。

2.call 、return 都有_one_fun_return操作

记录的执行函数 currPos_ar 每次call是前移到当前call上，同时调用堆栈callstack Add，

return时后退，同时调用堆栈callstack Remove。

在return丢失，我们当前记录的执行函数 currPos_ar和调用堆栈callstack其实不准确（少后退和少移除）,

return丢失后的下一次操作可以是call和return，所以都要做执行函数 currPos_ar 校准操作，将少后退的数据做return处理。

（1、2条其实做同一件事）

结束：

脚本经过我的反复调试和修改，不那么美观，也懒得整理，希望帮助到你

结果展示:

找到你report的文件位置，打开会看到如图：

还是不错的

---------------------------------------2021.5.7----------------------

使用一段时间后，对脚本做了修改优化

--[[Example usage:profiler = newProfiler(false)profiler:start()< call some functions that take time >profiler:stop()local outfile = io.open( "profile.txt", "w+" )profiler:report( outfile )outfile:close()--]]--
-- All profiler related stuff is stored in the top level table '_profiler'
--
_profiler = {}local bZLog = false; --zLog 是否打印
local bCppLogWrite = false; --CppLog 打印是否写文件
local cppLogWriteOutPath = "PepperfishProfiler_CppLog.txt"---tool fun
local table_print,CppLogInit,zLog,CppLogEnd,_CppLog;--
-- newProfiler() creates a new profiler object for managing
-- the profiler and storing state.  Note that only one profiler
-- object can be executing at one time.
--
function newProfiler(bRecordCFun)if _profiler.running thenprint("Profiler already running.")returnendlocal newprof = {}for k,v in pairs(_profiler) donewprof[k] = vendnewprof.variant = "call"newprof.bRecordCFun = bRecordCFun==nil and true or false; --记录C方法return newprof
end--
-- This function starts the profiler.  It will do nothing
-- if this (or any other) profiler is already running.
--
function _profiler.start(self)if _profiler.running thenreturnend-- Start the profiler. This begins by setting up internal profiler state_profiler.running = selfself.rawstats = {}self.callstack = {}self.currPos_ar = nil; --定位当前执行函数self.cache_lineInfo = {};self.cache_startTime = os.clock();self.lineProfiler_cost_time = 0;self.all_profile_cost_Time = 0;debug.sethook( _profiler_hook_wrapper_by_call, "crl" )if bCppLogWrite thenCppLogInit();end
end--
-- This function stops the profiler.  It will do nothing
-- if a profiler is not running, and nothing if it isn't
-- the currently running profiler.
--
function _profiler.stop(self)if _profiler.running ~= self thenreturnend-- Stop the profiler.debug.sethook( nil )_profiler.running = nilCppLog("[all profiler time]"..os.clock()-self.cache_startTime.."ms")CppLog("[all_profile_cost_Time] "..self.all_profile_cost_Time);-- CppLog("[lineProfiler_cost_time]"..self.lineProfiler_cost_time.."ms")
end--
-- Simple wrapper to handle the hook.  You should not
-- be calling this directly. Duplicated to reduce overhead.
--
function _profiler_hook_wrapper_by_call(action)if _profiler.running == nil thendebug.sethook( nil )end_profiler.running.profile_start_Time = os.clock();local t = os.clock();_profiler.running:_internal_profile_by_call(action)_profiler.running.all_profile_cost_Time = _profiler.running.all_profile_cost_Time + os.clock() - t;
end--
-- This is the main by-function-call function of the profiler and should not
-- be called except by the hook wrapper
--
function _profiler._internal_profile_by_call(self,action)-- Since we can obtain the 'function' for the item we've had call us, we-- can use that...local caller_info = debug.getinfo( 3 )if caller_info == nil thenprint "No caller_info"self.lineProfiler_cost_time = self.lineProfiler_cost_time + os.clock() - self.profile_start_Time;returnendif self.bRecordCFun == false and caller_info.what == "C" thenself.lineProfiler_cost_time = self.lineProfiler_cost_time + os.clock() - self.profile_start_Time;return;endif caller_info.name == nil then-- 这种情况太复杂，暂时忽略self.lineProfiler_cost_time = self.lineProfiler_cost_time + os.clock() - self.profile_start_Time;return;end--[[caller_info:table: 0x00472a38 = {["linedefined"] = 797,["currentline"] = 797,["func"] = function: 0x0013dd50,["isvararg"] = false,["namewhat"] = "global"["lastlinedefined"] = 799,["source"] = "@GamePlay\ServerEntry.lua"["nups"] = 0,["what"] = "Lua"["nparams"] = 0,["name"] = "zxjFunD"["short_src"] = "GamePlay\ServerEntry.lua"}call return 不一致测试:function zxjFunA()for i = 1, 100000, 1 dolocal a = {}endendfunction zxjFunB()for i = 1, 100000, 1 dolocal a = {}endzxjFunA()endfunction zxjFunC()zxjFunB()endfunction zxjFunD()for i = 1, 100000, 1 dolocal a = {}endreturn zxjFunC() --直接return fun 会导致return 不一致endfunction zxjFunE()zxjFunD();endcall: zxjFunE();结果：[CppLog] Call callTimesss:1 func:function: 0x00b6a598 linedefined:806 funName:zxjFunE[CppLog][CppLog] Call callTimesss:2 func:function: 0x00b6a580 linedefined:800 funName:zxjFunD[CppLog][CppLog] Call callTimesss:3 func:function: 0x00b6a568 linedefined:797 funName:zxjFunD --此处call 的funName其实应该是zxjFunC[CppLog][CppLog] Call callTimesss:4 func:function: 0x00b6a550 linedefined:791 funName:zxjFunB[CppLog][CppLog] Call callTimesss:5 func:function: 0x00b6a538 linedefined:786 funName:zxjFunA[CppLog][CppLog] Return callTimesss:5 func:function: 0x00b6a538 linedefined:786 funName:zxjFunA[CppLog][CppLog] Return callTimesss:4 func:function: 0x00b6a550 linedefined:791 funName:zxjFunB[CppLog][CppLog] Return callTimesss:3 func:function: 0x00b6a568 linedefined:797 funName:zxjFunD --缺少一次return 本次return其实是zxjFunC[CppLog][CppLog] Return callTimesss:2 func:function: 0x00b6a598 linedefined:806 funName:zxjFunE]]if action == "line" thenself.cache_lineInfo.source = caller_info.source;  --记录最近一次逐行调用信息self.cache_lineInfo.line = caller_info.currentline;self.lineProfiler_cost_time = self.lineProfiler_cost_time + os.clock() - self.profile_start_Time;return;endzLog("")zLog(action.." name:"..caller_info.source.." "..caller_info.name..caller_info.linedefined.." currentline:"..caller_info.currentline)if action == "call" thenzLog("[cache_lineInfo] source:"..self.cache_lineInfo.source.. " line:"..self.cache_lineInfo.line);-- add line profiler cost time to currPos_arif nil ~= self.currPos_ar thenself.currPos_ar.line_cost_time = self.currPos_ar.line_cost_time + self.lineProfiler_cost_time;self.lineProfiler_cost_time = 0;end-- TO: get realy parent function for this call-- 判定call的位置是否当前定位函数的内部--[[当前记录的执行函数不一定时此次call的父函数的原因： call和return的不一致eg:fun A()  B(); return 0; endfun B() return C()  endfun C() return 0;  endA();call A,call B,call C,return C,return A,加入D函数:fun A()  B(); D();return 0; endfun B() return C()  endfun C() return 0;  endfun D() return 0;  endA();call A,call B,call C,return C,no return B,call D,没执行该处理，则 D 的父函数视为B，但实际情况D的父函数可以为A]]while nil ~= self.currPos_ar and(self.cache_lineInfo.source ~= self.currPos_ar.source or(self.cache_lineInfo.line < self.currPos_ar.linedefined orself.cache_lineInfo.line > self.currPos_ar.lastlinedefined)) dozLog("[cache_lineInfo Data] source:"..self.cache_lineInfo.source.." line:"..self.cache_lineInfo.line.."\n\t".."[currPos_ar Data:] source:"..self.currPos_ar.source.." linedefined:"..self.currPos_ar.linedefined.." lastlinedefined:"..self.currPos_ar.lastlinedefined)self:_one_fun_return(self.currPos_ar.caller_info);endlocal latest_ar = self.currPos_ar-- Are we allowed to profile this function?local should_not_profile = 0for k,v in pairs(self.prevented_functions) doif k == caller_info.func thenshould_not_profile = vendend-- Also check the top activation record...if latest_ar thenif latest_ar.should_not_profile == 2 thenshould_not_profile = 2endendif latest_ar thenzLog("[parent]name:"..latest_ar.fun_name..latest_ar.linedefined);end-- Making a call...local this_ar = {}this_ar.should_not_profile = should_not_profilethis_ar.parent_ar = latest_arthis_ar.anon_child = 0this_ar.name_child = 0this_ar.children = {}this_ar.children_time = {}this_ar.clock_start = self.profile_start_Timethis_ar.func = caller_info.func;this_ar.source = caller_info.source;this_ar.linedefined = caller_info.linedefined;this_ar.lastlinedefined = caller_info.lastlinedefined;this_ar.fun_name = caller_info.name or tostring(caller_info.func);this_ar.caller_info = caller_info;this_ar.line_cost_time = 0; --行分析消耗时间-- Last thing to do on a call is to insert this onto the ar stack...table.insert( self.callstack, this_ar )--fun call update currposself.currPos_ar = this_ar;this_ar.proflier_time = os.clock() - self.profile_start_Time; --call 的分析消耗时间elseif action == "return" then-- add line profiler cost time to currPos_arif nil ~= self.currPos_ar thenself.currPos_ar.line_cost_time = self.currPos_ar.line_cost_time + self.lineProfiler_cost_time;self.lineProfiler_cost_time = 0;end-- 因为call return 不一致-- 需要将跳过的return做计算for i = #self.callstack, 1, -1 dolocal this_ar = self.callstack[i];self:_one_fun_return(this_ar.caller_info);if this_ar.func == caller_info.func or this_ar.linedefined == caller_info.linedefined thenbreak;endendend
endfunction _profiler._one_fun_return(self,caller_info)if #self.callstack <= 0 thenreturn;endlocal profile_return_start_Time = self.profile_start_Time;local this_ar = table.remove(self.callstack,#self.callstack);this_ar.clock_end = self.profile_start_Timethis_ar.this_time = this_ar.clock_end - this_ar.clock_start- this_ar.proflier_time   --减去自身call 和子函数call、return 的分析消耗时间- this_ar.line_cost_time  --减去自身函数内部的逐行分析消耗时间zLog("[one_fun_return]name:"..this_ar.fun_name..this_ar.linedefined)-- Now, if we have a parent, update its call info...if this_ar.parent_ar thenzLog("[one_fun_return parent]name:"..this_ar.parent_ar.fun_name..this_ar.parent_ar.linedefined)local funcStrKey = this_ar.fun_name.."_"..this_ar.linedefined.."_"..this_ar.source;this_ar.parent_ar.children[funcStrKey] =(this_ar.parent_ar.children[funcStrKey] or 0) + 1this_ar.parent_ar.children_time[funcStrKey] =(this_ar.parent_ar.children_time[funcStrKey] or 0 ) +this_ar.this_timeif this_ar.fun_name == nil thenthis_ar.parent_ar.anon_child =this_ar.parent_ar.anon_child + this_ar.this_timeelsethis_ar.parent_ar.name_child =this_ar.parent_ar.name_child + this_ar.this_timeendend-- Now if we're meant to record information about ourselves, do so...if this_ar.should_not_profile == 0 thenlocal inforec = self:_get_func_rec(this_ar.fun_name,this_ar.linedefined,this_ar.func,this_ar.source)inforec.count = inforec.count + 1inforec.time = inforec.time + this_ar.this_timeinforec.anon_child_time = inforec.anon_child_time + this_ar.anon_childinforec.name_child_time = inforec.name_child_time + this_ar.name_childinforec.func_info = this_ar.caller_infoinforec.parent_info = ""if this_ar.parent_ar theninforec.parent_info = this_ar.parent_ar.source.." ["..this_ar.parent_ar.fun_name.."]:"..this_ar.parent_ar.linedefinedendfor k,v in pairs(this_ar.children) doinforec.children[k] = (inforec.children[k] or 0) + vinforec.children_time[k] =(inforec.children_time[k] or 0) + this_ar.children_time[k]endendif this_ar.parent_ar thenlocal nowTime = os.clock();this_ar.parent_ar.proflier_time = this_ar.parent_ar.proflier_time+ this_ar.proflier_time --子函数调用的分析消耗+ (nowTime - profile_return_start_Time) --这次 return 的分析耗时this_ar.parent_ar.line_cost_time = this_ar.parent_ar.line_cost_time + this_ar.line_cost_time --传递子函数的逐行分析耗时self.profile_start_Time = nowTime;  --避免重复计算消耗end--fun return update currposself.currPos_ar = self.callstack[#self.callstack];
endfunction _profiler._get_func_rec(self,funName,linedefined,func,source)-- Find the function ref for 'func' (if force and not present, create one)local ret = self.rawstats[funName.."_"..linedefined.."_"..source]if ret == nil then-- Build a new function statistics tableret = {}ret.func = funcret.count = 0ret.time = 0ret.anon_child_time = 0ret.name_child_time = 0ret.children = {}ret.children_time = {}self.rawstats[funName.."_"..linedefined.."_"..source] = retendreturn ret
end--
-- This writes a profile report to the output file object.  If
-- sort_by_total_time is nil or false the output is sorted by
-- the function time minus the time in it's children.
--
function _profiler.report( self, outfile, sort_by_total_time )-- table_print(self.rawstats)outfile:write[[Lua Profile output created by profiler.lua. Copyright Pepperfish 2002+]]-- This is pretty awful.local terms = {}if self.variant == "time" thenterms.capitalized = "Sample"terms.single = "sample"terms.pastverb = "sampled"elseif self.variant == "call" thenterms.capitalized = "Call"terms.single = "call"terms.pastverb = "called"elseassert(false)endlocal total_time = 0local ordering = {}for func,record in pairs(self.rawstats) dotable.insert(ordering, func)endif sort_by_total_time thentable.sort( ordering, function(a,b) return self.rawstats[a].time > self.rawstats[b].time end)elsetable.sort( ordering, function(a,b)local arec = self.rawstats[a] local brec = self.rawstats[b]local atime = arec.time - (arec.anon_child_time + arec.name_child_time)local btime = brec.time - (brec.anon_child_time + brec.name_child_time)return atime > btimeend)endfor i=1,table.getn(ordering) dolocal func = ordering[i]local record = self.rawstats[func]local thisfuncname = " " .. self:_pretty_name(func,true) .. " "-- if string.len( thisfuncname ) < 42 then--   thisfuncname =--     string.rep( "-", (42 - string.len(thisfuncname))/2 ) .. thisfuncname--   thisfuncname =--     thisfuncname .. string.rep( "-", 42 - string.len(thisfuncname) )-- endtotal_time = total_time + ( record.time - ( record.anon_child_time +record.name_child_time ) )outfile:write( "No."..i..string.rep( "-", 19 ) .. thisfuncname .. " [parent]" .. record.parent_info ..string.rep( "-", 19 ) .. "\n" )outfile:write( terms.capitalized.." count:         " ..string.format( "%4d", record.count ) .. "\n" )outfile:write( "Time spend total:       " ..string.format( "%4.3f", record.time ) .. "ms\n" )outfile:write( "Time spent in children: " ..string.format("%4.3f",record.anon_child_time+record.name_child_time) .."ms\n" )local timeinself =record.time - (record.anon_child_time + record.name_child_time)outfile:write( "Time spent in self:     " ..string.format("%4.3f", timeinself) .. "ms\n" )outfile:write( "Time spent per " .. terms.single .. ":  " ..string.format("%4.5f", record.time/record.count) .."ms/" .. terms.single .. "\n" )outfile:write( "Time spent in self per "..terms.single..": " ..string.format( "%4.5f", timeinself/record.count ) .. "ms/" ..terms.single.."\n" )-- Report on each child in the form-- Child  <funcname> called n times and took a.bslocal added_blank = 0local childrenlist = {} for k,v in pairs(record.children) doif self.prevented_functions[k] == nil orself.prevented_functions[k] == 0then-- if added_blank == 0 then--   outfile:write( "\n" ) -- extra separation line--   added_blank = 1-- end-- if record.children_time[k] ~= 0 thenlocal childrenInfo = {}childrenInfo.str =  "Child " .. self:_pretty_name(k) ..string.rep( " ", 41-string.len(self:_pretty_name(k)) ) .. " " ..terms.pastverb.." " .. string.format("%6d", v) .. " times. Took " ..string.format("%4.2f", record.children_time[k] ) .. "ms\n"childrenInfo.time = record.children_time[k];table.insert(childrenlist,childrenInfo);-- endendendtable.sort(childrenlist,function (a,b)return a.time > b.time;end)outfile:write( "\n" )for k, v in pairs(childrenlist) dooutfile:write(v.str);endoutfile:write( "\n" ) -- extra separation lineoutfile:flush()endoutfile:write( "\n\n" )outfile:write( "Total time spent in profiled functions: " ..string.format("%5.3g",total_time) .. "s\n" )outfile:write( [[END
]] )outfile:flush()if bCppLogWrite thenCppLogEnd();end
end--
-- This writes the profile to the output file object as
-- loadable Lua source.
--
function _profiler.lua_report(self,outfile)-- Purpose: Write out the entire raw state in a cross-referenceable form.local ordering = {}local functonum = {}for func,record in pairs(self.rawstats) dotable.insert(ordering, func)functonum[func] = table.getn(ordering)endoutfile:write("-- Profile generated by profiler.lua Copyright Pepperfish 2002+\n\n" )outfile:write( "-- Function names\nfuncnames = {}\n" )for i=1,table.getn(ordering) dolocal thisfunc = ordering[i]outfile:write( "funcnames[" .. i .. "] = " ..string.format("%q", self:_pretty_name(thisfunc)) .. "\n" )endoutfile:write( "\n" )outfile:write( "-- Function times\nfunctimes = {}\n" )for i=1,table.getn(ordering) dolocal thisfunc = ordering[i]local record = self.rawstats[thisfunc]outfile:write( "functimes[" .. i .. "] = { " )outfile:write( "tot=" .. record.time .. ", " )outfile:write( "achild=" .. record.anon_child_time .. ", " )outfile:write( "nchild=" .. record.name_child_time .. ", " )outfile:write( "count=" .. record.count .. " }\n" )endoutfile:write( "\n" )outfile:write( "-- Child links\nchildren = {}\n" )for i=1,table.getn(ordering) dolocal thisfunc = ordering[i]local record = self.rawstats[thisfunc]outfile:write( "children[" .. i .. "] = { " )for k,v in pairs(record.children) doif functonum[k] then -- non-recorded functions will be ignored nowoutfile:write( functonum[k] .. ", " )endendoutfile:write( "}\n" )endoutfile:write( "\n" )outfile:write( "-- Child call counts\nchildcounts = {}\n" )for i=1,table.getn(ordering) dolocal thisfunc = ordering[i]local record = self.rawstats[thisfunc]outfile:write( "children[" .. i .. "] = { " )for k,v in record.children doif functonum[k] then -- non-recorded functions will be ignored nowoutfile:write( v .. ", " )endendoutfile:write( "}\n" )endoutfile:write( "\n" )outfile:write( "-- Child call time\nchildtimes = {}\n" )for i=1,table.getn(ordering) dolocal thisfunc = ordering[i]local record = self.rawstats[thisfunc];outfile:write( "children[" .. i .. "] = { " )for k,v in pairs(record.children) doif functonum[k] then -- non-recorded functions will be ignored nowoutfile:write( record.children_time[k] .. ", " )endendoutfile:write( "}\n" )endoutfile:write( "\n\n-- That is all.\n\n" )outfile:flush()
end-- Internal function to calculate a pretty name for the profile output
function _profiler._pretty_name(self,func,bTitle)-- Only the data collected during the actual-- run seems to be correct.... why?local info = self.rawstats[ func ].func_info-- local info = debug.getinfo( func )local name = ""if info.what == "Lua" thenname = "L:"endif info.what == "C" thenname = "C:"endif info.what == "main" thenname = " :"endif info.name == nil thenname = name .. "<"..tostring(func) .. ">"elsename = name .. info.nameendif info.source thenname = name .. "@" .. info.sourceelseif info.what == "C" thenname = name .. "@?"elsename = name .. "@<string>"endendname = name .. ":"if info.what == "C" thenname = name .. "?"elsename = name .. info.linedefinedendif bTitle thenname = name .. " Root"endif info.name thenname = name .."  Fun:"..info.name;endreturn name
end--
-- This allows you to specify functions which you do
-- not want profiled.  Setting level to 1 keeps the
-- function from being profiled.  Setting level to 2
-- keeps both the function and its children from
-- being profiled.
--
-- BUG: 2 will probably act exactly like 1 in "time" mode.
-- If anyone cares, let me (zorba) know and it can be fixed.
--
function _profiler.prevent(self, func, level)self.prevented_functions[func] = (level or 1)
end_profiler.prevented_functions = {[_profiler.start] = 2,[_profiler.stop] = 2,[_profiler._internal_profile_by_call] = 2,[_profiler_hook_wrapper_by_call] = 2,[_profiler.prevent] = 2,[_profiler._get_func_rec] = 2,[_profiler.report] = 2,[_profiler.lua_report] = 2,[_profiler._pretty_name] = 2,
}-------------------------------------------------------------------
-- Tool functions
-------------------------------------------------------------------local function _list_table(tb, table_list, level)local ret = ""local indent = string.rep(" ", level*4)for k, v in pairs(tb) dolocal quo = type(k) == "string" and "\"" or ""ret = ret .. indent .. "[" .. quo .. tostring(k) .. quo .. "] = "if type(v) == "table" thenlocal t_name = table_list[v]if t_name thenret = ret .. tostring(v) .. " -- > [\"" .. t_name .. "\"]\n"elsetable_list[v] = tostring(k)ret = ret .. "{\n"ret = ret .. _list_table(v, table_list, level+1)ret = ret .. indent .. "}\n"endelseif type(v) == "string" thenret = ret .. "\"" .. tostring(v) .. "\"\n"elseret = ret .. tostring(v) .. ",\n"endendlocal mt = getmetatable(tb)if mt then ret = ret .. "\n"local t_name = table_list[mt]ret = ret .. indent .. "<metatable> = "if t_name thenret = ret .. tostring(mt) .. " -- > [\"" .. t_name .. "\"]\n"elseret = ret .. "{\n"ret = ret .. _list_table(mt, table_list, level+1)ret = ret .. indent .. "}\n"endendreturn ret
endlocal function table_tostring(tb)--print("table_tostring")if type(tb) ~= "table" thenprint("Sorry, it's not table, it is " .. type(tb) .. ".","table_Print")endlocal ret = " = {\n"local table_list = {}table_list[tb] = "root table"ret = ret .. _list_table(tb, table_list, 1)ret = ret .. "}"return ret
endtable_print = function (tb)if tb == nil thenprint("table_Print {}","table_Print")returnendif zLog thenzLog(tostring(tb) .. table_tostring(tb))end-- print(tostring(tb) .. table_tostring(tb))
endlocal cppLogStr = ""CppLogInit = function()cppLogStr = ""
end_CppLog = function(str)cppLogStr = cppLogStr .."\n".. str;
endzLog = function(str)
endCppLogEnd = function()local outfile = io.open(cppLogWriteOutPath,"w+");outfile:write(cppLogStr)outfile:flush()
endif bCppLogWrite thenCppLog = _CppLog;_profiler.prevented_functions[CppLog] = 2;_profiler.prevented_functions[CppLogInit] = 2;_profiler.prevented_functions[CppLogEnd] = 2;
endif bZLog thenzLog = CppLog
end

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