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BERHASIL DIUBAH!

EDITING: tablepool.lua

local newtab = require "table.new"
local cleartab = require "table.clear"
local setmetatable = setmetatable

local _M = newtab(0, 2)
local max_pool_size = 200
local pools = newtab(0, 4)

function _M.fetch(tag, narr, nrec)
    local pool = pools[tag]
    if not pool then
        pool = newtab(4, 1)
        pools[tag] = pool
        pool.c = 0
        pool[0] = 0

else
        local len = pool[0]
        if len > 0 then
            local obj = pool[len]
            pool[len] = nil
            pool[0] = len - 1
            -- ngx.log(ngx.ERR, "HIT")
            return obj
        end
    end

return newtab(narr, nrec)
end

function _M.release(tag, obj, noclear)
    if not obj then
        error("object empty", 2)
    end

local pool = pools[tag]
    if not pool then
        pool = newtab(4, 1)
        pools[tag] = pool
        pool.c = 0
        pool[0] = 0
    end

do
        local cnt = pool.c + 1
        if cnt >= 20000 then
            pool = newtab(4, 1)
            pools[tag] = pool
            pool.c = 0
            pool[0] = 0
            return
        end
        pool.c = cnt
    end

local len = pool[0] + 1
    if len > max_pool_size then
        -- discard it simply
        return
    end

if not noclear then
        setmetatable(obj, nil)
        cleartab(obj)
    end

pool[len] = obj
    pool[0] = len
end

return _M

-- vi: ft=lua ts=4 sw=4 et