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if not modules then modules = { } end modules ['luat-sto'] = {
version = 1.001,
comment = "companion to luat-lib.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
local type, next = type, next
local gmatch, format, write_nl = string.gmatch, string.format, texio.write_nl
storage = storage or { }
storage.min = 0 -- 500
storage.max = storage.min - 1
storage.noftables = storage.noftables or 0
storage.nofmodules = storage.nofmodules or 0
storage.data = { }
storage.evaluators = { }
local report_storage = logs.new("storage")
local evaluators = storage.evaluators -- (evaluate,message,names)
local data = storage.data
function storage.register(...)
data[#data+1] = { ... }
end
-- evaluators .. messy .. to be redone
function storage.evaluate(name)
evaluators[#evaluators+1] = name
end
local function finalize() -- we can prepend the string with "evaluate:"
for i=1,#evaluators do
local t = evaluators[i]
for i, v in next, t do
local tv = type(v)
if tv == "string" then
t[i] = loadstring(v)()
elseif tv == "table" then
for _, vv in next, v do
if type(vv) == "string" then
t[i] = loadstring(vv)()
end
end
elseif tv == "function" then
t[i] = v()
end
end
end
end
lua.registerfinalizer(finalize)
local function dump()
for i=1,#data do
local d = data[i]
local message, original, target, evaluate = d[1], d[2] ,d[3] ,d[4]
local name, initialize, finalize, code = nil, "", "", ""
for str in gmatch(target,"([^%.]+)") do
if name then
name = name .. "." .. str
else
name = str
end
initialize = format("%s %s = %s or {} ", initialize, name, name)
end
if evaluate then
finalize = "storage.evaluate(" .. name .. ")"
end
storage.max = storage.max + 1
if trace_storage then
report_storage('saving %s in slot %s',message,storage.max)
code =
initialize ..
format("report_storage('restoring %s from slot %s') ",message,storage.max) ..
table.serialize(original,name) ..
finalize
else
code = initialize .. table.serialize(original,name) .. finalize
end
lua.bytecode[storage.max] = loadstring(code)
collectgarbage("step")
end
end
lua.registerfinalizer(dump)
-- we also need to count at generation time (nicer for message)
--~ if lua.bytecode then -- from 0 upwards
--~ local i, b = storage.min, lua.bytecode
--~ while b[i] do
--~ storage.noftables = i
--~ b[i]()
--~ b[i] = nil
--~ i = i + 1
--~ end
--~ end
statistics.register("stored bytecode data", function()
local modules = (storage.nofmodules > 0 and storage.nofmodules) or (status.luabytecodes - lua.firstbytecode - 1)
local dumps = (storage.noftables > 0 and storage.noftables) or storage.max-storage.min + 1
return format("%s modules, %s tables, %s chunks",modules,dumps,modules+dumps)
end)
if lua.bytedata then
storage.register("lua/bytedata",lua.bytedata,"lua.bytedata")
end
function statistics.report_storage(whereto)
whereto = whereto or "term and log"
write_nl(whereto," ","stored tables:"," ")
for k,v in table.sortedhash(storage.data) do
write_nl(whereto,format("%03i %s",k,v[1]))
end
write_nl(whereto," ","stored modules:"," ")
for k,v in table.sortedhash(lua.bytedata) do
write_nl(whereto,format("%03i %s %s",k,v[2],v[1]))
end
write_nl(whereto," ","stored attributes:"," ")
for k,v in table.sortedhash(attributes.names) do
write_nl(whereto,format("%03i %s",k,v))
end
write_nl(whereto," ","stored catcodetables:"," ")
for k,v in table.sortedhash(catcodes.names) do
write_nl(whereto,format("%03i %s",k,table.concat(v," ")))
end
write_nl(whereto," ")
end
storage.shared = storage.shared or { }
-- Because the storage mechanism assumes tables, we define a table for storing
-- (non table) values.
storage.register("storage/shared", storage.shared, "storage.shared")
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