介绍： 第六章the lost章节曲
function operator:allocateStorage(size)
local db = self: acquireDatabase ( )

while db: getAvailableSpace()< size do
local dated_ item = db:query{
number=1
tag = " emotion" ,
sort = "timestamp",
}
db:remove(dated_item)
end

local chunk = db: reserveSpace(size)
zeroMemory(chunk)

介绍： 第六章the lost章节曲
function operator:allocateStorage(size)
local db = self: acquireDatabase ( )

while db: getAvailableSpace()< size do
local dated_ item = db:query{
number=1
tag = " emotion" ,
sort = "timestamp",
}
db:remove(dated_item)
end

local chunk = db: reserveSpace(size)
zeroMemory(chunk)