4d6f285d
 zhouhaihai
增加发布功能
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local skynet = require "skynet"
local service = require "skynet.service"
local core = require "skynet.sharetable.core"
local is_sharedtable = core.is_sharedtable
local stackvalues = core.stackvalues
local function sharetable_service()
local skynet = require "skynet"
local core = require "skynet.sharetable.core"
local matrix = {} -- all the matrix
local files = {} -- filename : matrix
local clients = {}
local sharetable = {}
local function close_matrix(m)
if m == nil then
return
end
local ptr = m:getptr()
local ref = matrix[ptr]
if ref == nil or ref.count == 0 then
matrix[ptr] = nil
m:close()
end
end
function sharetable.loadfile(source, filename, ...)
close_matrix(files[filename])
local m = core.matrix("@" .. filename, ...)
files[filename] = m
skynet.ret()
end
function sharetable.loadstring(source, filename, datasource, ...)
close_matrix(files[filename])
local m = core.matrix(datasource, ...)
files[filename] = m
skynet.ret()
end
local function loadtable(filename, ptr, len)
close_matrix(files[filename])
local m = core.matrix([[
local unpack, ptr, len = ...
return unpack(ptr, len)
]], skynet.unpack, ptr, len)
files[filename] = m
end
function sharetable.loadtable(source, filename, ptr, len)
local ok, err = pcall(loadtable, filename, ptr, len)
skynet.trash(ptr, len)
assert(ok, err)
skynet.ret()
end
local function query_file(source, filename)
local m = files[filename]
local ptr = m:getptr()
local ref = matrix[ptr]
if ref == nil then
ref = {
filename = filename,
count = 0,
matrix = m,
refs = {},
}
matrix[ptr] = ref
end
if ref.refs[source] == nil then
ref.refs[source] = true
local list = clients[source]
if not list then
clients[source] = { ptr }
else
table.insert(list, ptr)
end
ref.count = ref.count + 1
end
return ptr
end
function sharetable.query(source, filename)
local m = files[filename]
if m == nil then
skynet.ret()
return
end
local ptr = query_file(source, filename)
skynet.ret(skynet.pack(ptr))
end
function sharetable.close(source)
local list = clients[source]
if list then
for _, ptr in ipairs(list) do
local ref = matrix[ptr]
if ref and ref.refs[source] then
ref.refs[source] = nil
ref.count = ref.count - 1
if ref.count == 0 then
if files[ref.filename] ~= ref.matrix then
-- It's a history version
skynet.error(string.format("Delete a version (%s) of %s", ptr, ref.filename))
ref.matrix:close()
matrix[ptr] = nil
end
end
end
end
clients[source] = nil
end
-- no return
end
skynet.dispatch("lua", function(_,source,cmd,...)
sharetable[cmd](source,...)
end)
skynet.info_func(function()
local info = {}
for filename, m in pairs(files) do
info[filename] = {
current = m:getptr(),
size = m:size(),
}
end
local function address(refs)
local keys = {}
for addr in pairs(refs) do
table.insert(keys, skynet.address(addr))
end
table.sort(keys)
return table.concat(keys, ",")
end
for ptr, copy in pairs(matrix) do
local v = info[copy.filename]
local h = v.history
if h == nil then
h = {}
v.history = h
end
table.insert(h, string.format("%s [%d]: (%s)", copy.matrix:getptr(), copy.matrix:size(), address(copy.refs)))
end
for _, v in pairs(info) do
if v.history then
v.history = table.concat(v.history, "\n\t")
end
end
return info
end)
end
local function load_service(t, key)
if key == "address" then
t.address = service.new("sharetable", sharetable_service)
return t.address
else
return nil
end
end
local function report_close(t)
local addr = rawget(t, "address")
if addr then
skynet.send(addr, "lua", "close")
end
end
local sharetable = setmetatable ( {} , {
__index = load_service,
__gc = report_close,
})
function sharetable.loadfile(filename, ...)
skynet.call(sharetable.address, "lua", "loadfile", filename, ...)
end
function sharetable.loadstring(filename, source, ...)
skynet.call(sharetable.address, "lua", "loadstring", filename, source, ...)
end
function sharetable.loadtable(filename, tbl)
assert(type(tbl) == "table")
skynet.call(sharetable.address, "lua", "loadtable", filename, skynet.pack(tbl))
end
local RECORD = {}
function sharetable.query(filename)
local newptr = skynet.call(sharetable.address, "lua", "query", filename)
if newptr then
local t = core.clone(newptr)
local map = RECORD[filename]
if not map then
map = {}
RECORD[filename] = map
end
map[t] = true
return t
end
end
local pairs = pairs
local type = type
local assert = assert
local next = next
local rawset = rawset
local getuservalue = debug.getuservalue
local setuservalue = debug.setuservalue
local getupvalue = debug.getupvalue
local setupvalue = debug.setupvalue
local getlocal = debug.getlocal
local setlocal = debug.setlocal
local getinfo = debug.getinfo
local NILOBJ = {}
local function insert_replace(old_t, new_t, replace_map)
for k, ov in pairs(old_t) do
if type(ov) == "table" then
local nv = new_t[k]
if nv == nil then
nv = NILOBJ
end
assert(replace_map[ov] == nil)
replace_map[ov] = nv
nv = type(nv) == "table" and nv or NILOBJ
insert_replace(ov, nv, replace_map)
end
end
replace_map[old_t] = new_t
return replace_map
end
local function resolve_replace(replace_map)
local match = {}
local record_map = {}
local function getnv(v)
local nv = replace_map[v]
if nv then
if nv == NILOBJ then
return nil
end
return nv
end
assert(false)
end
local function match_value(v)
assert(v ~= nil)
if v == RECORD then
return
end
local tv = type(v)
local f = match[tv]
if record_map[v] or is_sharedtable(v) then
return
end
if f then
record_map[v] = true
f(v)
end
end
local function match_mt(v)
local mt = debug.getmetatable(v)
if mt then
local nv = replace_map[mt]
if nv then
nv = getnv(mt)
debug.setmetatable(v, nv)
else
match_value(mt)
end
end
end
local function match_internmt()
local internal_types = {
pointer = debug.upvalueid(getnv, 1),
boolean = false,
str = "",
number = 42,
thread = coroutine.running(),
func = getnv,
}
for _,v in pairs(internal_types) do
match_mt(v)
end
match_mt(nil)
end
local function match_table(t)
local keys = false
for k,v in next, t do
local tk = type(k)
if match[tk] then
keys = keys or {}
keys[#keys+1] = k
end
local nv = replace_map[v]
if nv then
nv = getnv(v)
rawset(t, k, nv)
else
match_value(v)
end
end
if keys then
for _, old_k in ipairs(keys) do
local new_k = replace_map[old_k]
if new_k then
local value = rawget(t, old_k)
new_k = getnv(old_k)
rawset(t, old_k, nil)
if new_k then
rawset(t, new_k, value)
end
else
match_value(old_k)
end
end
end
match_mt(t)
end
local function match_userdata(u)
local uv = getuservalue(u)
local nv = replace_map[uv]
if nv then
nv = getnv(uv)
setuservalue(u, nv)
end
match_mt(u)
end
local function match_funcinfo(info)
local func = info.func
local nups = info.nups
for i=1,nups do
local name, upv = getupvalue(func, i)
local nv = replace_map[upv]
if nv then
nv = getnv(upv)
setupvalue(func, i, nv)
elseif upv then
match_value(upv)
end
end
local level = info.level
local curco = info.curco or coroutine.running()
if not level then
return
end
local i = 1
while true do
local name, v = getlocal(curco, level, i)
if name == nil then
break
end
if replace_map[v] then
local nv = getnv(v)
setlocal(curco, level, i, nv)
elseif v then
match_value(v)
end
i = i + 1
end
end
local function match_function(f)
local info = getinfo(f, "uf")
match_funcinfo(info)
end
local stack_values_tmp = {}
local function match_thread(co)
-- match stackvalues
local n = stackvalues(co, stack_values_tmp)
for i=1,n do
local v = stack_values_tmp[i]
stack_values_tmp[i] = nil
match_value(v)
end
-- match callinfo
local level = 1
-- jump the fucntion from sharetable.update to top
local is_self = coroutine.running() == co
if is_self then
while true do
local info = getinfo(co, level, "uf")
level = level + 1
if not info then
level = 1
break
elseif info.func == sharetable.update then
break
end
end
end
while true do
local info = getinfo(co, level, "uf")
if not info then
break
end
info.level = is_self and level + 1 or level
info.curco = co
match_funcinfo(info)
level = level + 1
end
end
match["table"] = match_table
match["function"] = match_function
match["userdata"] = match_userdata
match["thread"] = match_thread
match_internmt()
local root = debug.getregistry()
assert(replace_map[root] == nil)
match_table(root)
end
function sharetable.update(...)
local names = {...}
local replace_map = {}
for _, name in ipairs(names) do
local map = RECORD[name]
if map then
local new_t = sharetable.query(name)
for old_t,_ in pairs(map) do
if old_t ~= new_t then
insert_replace(old_t, new_t, replace_map)
map[old_t] = nil
end
end
end
end
if next(replace_map) then
resolve_replace(replace_map)
end
end
return sharetable
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