khanat-opennel-code/code/ryzom/common/data_common/r2/r2_debug.lua

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2014-02-09 02:39:39 +00:00
-- debugging aid
---------------
-- FUNCTIONS --
---------------
------------------------------------------------------------------------------------------------------------
-- function tracing asked in config file ?
-- if traceFunctions == true then
-- local function traceFunction(what)
-- debug.sethook()
-- local di = debug.getinfo(2)
-- --luaObject(di)
-- if di.name ~= nil and di.name ~= 'getmetatable' then
-- debugInfo(what .. " : " .. tostring(di.name) .. " : " .. tostring(di.short_src) .. " : " .. tostring(di.currentline))
-- end
-- debug.sethook(traceFunction, "cr")
-- end
-- debugInfo("turning debug hook on")
-- debug.sethook(traceFunction, "c")
--else
-- --debugInfo("turning debug hook off")
-- debug.sethook()
--end
------------------------------------------------------------------------------------------------------------
-- dump objects cycles for the given object
function dumpCycles(base, visitedSet, infos)
local function fullName(infos)
local result = ""
while infos do
result = infos.Name .. "." .. result
infos = infos.Parent
end
return result
end
if visitedSet == nil then
visitedSet = {}
end
if infos == nil then
infos = { Name = "root", Parent = nil }
end
for k, v in pairs(base) do
if v ~= _G._G then
if type(v) == "table" then
local newInfos = { Name = tostring(k), Parent = infos }
if visitedSet[v] then
debugInfo(fullName(visitedSet[v]) .. "is referenced by " .. fullName(newInfos))
else
visitedSet[v] = newInfos -- mark as visited
dumpCycles(v, visitedSet, newInfos)
visitedSet[v] = nil -- only intersted in cycles
end
end
end
end
end
------------------------------------------------------------------------------------------------------------
-- display time taken to execute a function
function profileFunction(func, name)
assert(type(func) == "function")
if name == nil then
name = debug.getinfo(func).name
end
local startTime = nltime.getPreciseLocalTime()
func()
local endTime = nltime.getPreciseLocalTime()
--debugInfo(string.format("time for %s is %d", tostring(name), endTime - startTime))
end
-- display time taken to execute a function
function profileMethod(table, funcName, name)
assert(table)
assert(type(funcName) == "string")
assert(type(table[funcName]) == "function")
if name == nil then
name = select(debug.getinfo(table[funcName]).name, funcName)
end
local startTime = nltime.getLocalTime()
table[funcName](table)
local endTime = nltime.getLocalTime()
debugInfo(string.format("time for %s is %f", tostring(name), (endTime - startTime) / 1000))
end
------------------------------------------------------------------------------------------------------------
-- add a break that is triggered when a value in a table has been changed
function addBreakOnChange(table, watchedKey)
assert(type(table) == "table")
local value = table[watchedKey]
assert(value ~= nil)
table[watchedKey] = nil
debugInfo("Adding break on change of key " .. tostring(watchedKey))
local mt = getmetatable(table)
local oldNewIndex
if mt then
oldNewIndex = mt.__newindex
end
local newMT
if mt then newMT = clone(mt) else newMT = {} end
-- WRITE
newMT.__newindex = function(table, key, newValue)
debugInfo('write')
if key == watchedKey then
value = newValue
debugInfo(debug.traceback())
debugWarning("<addBreakOnChange> Key " .. tostring(watchedKey) .. " changed to " .. tostring(value))
assert(nil)
elseif mt and mt.__newindex then
mt.__newindex(table, key, newValue)
else
rawset(table, key, newValue)
end
end
-- READ
newMT.__index = function(table, key)
debugInfo('read')
if key == watchedKey then
return value
elseif mt and mt.__index then
return mt.__index(table, key, value)
else
return rawget(table, key)
end
end
--
setmetatable(table, newMT)
end
----------
-- INIT --
----------
-- replace the assert function with a more verbose one
if oldAssert == nil then
oldAssert = assert
end
function assert(cond)
if not cond then
rawDebugInfo(colorTag(255, 0, 255) .. "ASSERTION FAILED !! ")
dumpCallStack(2);
error("")
end
end
local gcStartTime
-- special nico stuff : modified lua version calls "__notify_debug" when a garbage collection cycle occurs
function __notify_gc()
gcStartTime = nltime.getLocalTime()
end
function __notify_post_gc()
local deltaTime = nltime.getLocalTime() - gcStartTime
local used, threshold = gcinfo()
debugInfo(colorTag(255, 0, 0) .. string.format("** GC ** (%d ms) (used = %d kb, threshold = %d kb", deltaTime, used, threshold))
end
--testTable = { tata = 1, toto = 2 }
--addBreakOnChange(testTable, "tata")
--testTable.tutu = 2
--testTable.tata = testTable.tata + 20