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ch_base = {}
local get_us_time = core.get_us_time
local n = 0
local open_modname
local us_openned
local orig_node_count
local orig_memory
local enable_performance_logging = core.settings:get_bool("ch_enable_performance_logging", false)
local function ifthenelse(a, b, c)
if a then return b else return c end
end
--[[
local function count_nodes()
local t = core.registered_nodes
local name = next(t)
local count = 0
while name ~= nil do
count = count + 1
name = next(t, name)
end
return count
end
]]
local function count_nodes()
return 0
end
function ch_base.open_mod(modname)
if open_modname ~= nil then
error("ch_base.open_mod(): mod "..tostring(open_modname).." is already openned!")
end
open_modname = assert(modname)
us_openned = get_us_time()
orig_node_count = count_nodes()
orig_memory = collectgarbage("count")
n = n + 1
print("["..modname.."] init started ("..n..")")
end
function ch_base.close_mod(modname)
if open_modname ~= modname then
error("ch_base.close_mod(): mod "..tostring(modname).." is not openned!")
end
local diff = math.ceil((get_us_time() - us_openned) / 1000.0)
local memory_now = collectgarbage("count")
local memory_diff = memory_now - orig_memory
memory_diff = string.format(ifthenelse(memory_diff >= 0, "+%.3f kB", "%.3f kB"), memory_diff)
local msg = "["..modname.."] init finished ("..n..")"
if diff >= 10 then
msg = msg.." in "..diff.." ms"
end
local new_nodes = count_nodes() - orig_node_count
if new_nodes > 0 then
msg = msg.." +"..new_nodes.." nodes"
end
msg = msg.." "..memory_diff.."."
print(msg)
open_modname = nil
us_openned = nil
end
function ch_base.mod_checkpoint(name)
if open_modname == nil then
error("ch_base.mod_checkpoint() outside of mod initialization!")
end
print("["..open_modname.."] checkpoint "..(name or "nil").." at "..math.ceil((get_us_time() - us_openned) / 1000.0).." ms")
end
if enable_performance_logging then
-- Performance watching:
-- * globalstep
-- * ABM
-- * LBM
-- * entity on_step
-- * unmeasured time
local counters = {}
local measured = {} -- key => {count = int, time = long}
local global_measure_start
local measure_start, measure_stop
local measure_active = false
local function run_and_measure(label, f, ...)
if measure_active then
return f(...)
end
measure_start = get_us_time()
if global_measure_start == nil then
global_measure_start = measure_start
end
measure_active = true
local result = f(...)
measure_active = false
measure_stop = get_us_time()
local m = measured[label]
if m == nil then
measured[label] = {count = 1, time = measure_stop - measure_start, maxtime = measure_stop - measure_start}
else
m.count = m.count + 1
m.time = m.time + (measure_stop - measure_start)
if m.time > m.maxtime then
m.maxtime = m.time
end
end
return result
end
local function acquire_label(label_type)
local modname = open_modname or "nil"
local counter = counters[modname..":"..label_type] or 1
counters[modname..":"..label_type] = counter + 1
return modname..":"..label_type..":"..counter
end
local orig_register_globalstep = assert(core.register_globalstep)
local orig_register_lbm = assert(core.register_lbm)
local orig_register_abm = assert(core.register_abm)
local orig_register_entity = assert(core.register_entity)
function core.register_globalstep(func)
assert(func)
local label = acquire_label("globalstep")
return orig_register_globalstep(function(...)
return run_and_measure(label, func, ...)
end)
end
function core.register_lbm(def, ...)
assert(type(def) == "table")
local orig_action = def.action
if type(orig_action) ~= "function" then
return orig_register_lbm(def, ...)
end
local label = acquire_label("lbm")
local new_def = {}
for k, v in pairs(def) do
new_def[k] = v
end
new_def.action = function(...)
return run_and_measure(label, orig_action, ...)
end
return orig_register_lbm(new_def, ...)
end
function core.register_abm(def, ...)
assert(type(def) == "table")
local orig_action = def.action
assert(orig_action)
local label = acquire_label("abm")
local new_def = {}
for k, v in pairs(def) do
new_def[k] = v
end
new_def.action = function(...)
return run_and_measure(label, orig_action, ...)
end
return orig_register_abm(new_def, ...)
end
function core.register_entity(name, def, ...)
assert(type(name) == "string")
assert(type(def) == "table")
local orig_on_step = def.on_step
if orig_on_step ~= nil then
local label = (open_modname or "nil")..":entity_on_step:["..name.."]"
local new_def = {
on_step = function(...)
return run_and_measure(label, orig_on_step, ...)
end,
}
setmetatable(new_def, {__index = def})
def = new_def
end
return orig_register_entity(name, def, ...)
end
local def = {
params = "",
description = "vypíše do logu naměřené údaje o výkonu",
privs = {server = true},
func = function(player_name, param)
if not global_measure_start then
return false, "měření nezačalo"
end
local now = get_us_time()
local m = {}
local total_time = 0
for label, data in pairs(measured) do
table.insert(m, {label, data})
total_time = total_time + data.time
end
table.sort(m, function(a, b) return a[2].time > b[2].time end)
local result = {"Performance log ["..#m.." items]:"}
for _, package in ipairs(m) do
local label, data = package[1], package[2]
table.insert(result, string.format("- %s = %0.3f ms (c=%d) maxtime=%0.3f ms",
label, math.ceil(data.time / 1000.0), data.count, math.ceil(data.maxtime / 1000.0)))
end
table.insert(result, string.format("==============\ntotal measured: %0.3f ms\ntotal unmeasured: %0.3f",
math.ceil(total_time / 1000.0), math.ceil((now - global_measure_start - total_time) / 1000.0)))
result = table.concat(result, "\n")
core.log("action", result)
return true, "vypsáno"
end,
}
core.register_chatcommand("vykon", def)
core.register_chatcommand("výkon", def)
end -- if enable_performance_logging
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