util.startup: Fix exiting on pidfile trouble
prosody.shutdown() relies on prosody.main_thread, which has not been set
yet at this point.
Doing a clean shutdown might actually be harmful in case it tears down
things set up by the conflicting Prosody, such as the very pidfile we
were looking at.
Thanks again SigmaTel71 for noticing
local queue = require("prosody.util.queue");
local lib = { smqueue = {} }
local smqueue = lib.smqueue;
function smqueue:push(v)
self._head = self._head + 1;
assert(self._queue:push(v));
end
function smqueue:ack(h)
if h < self._tail then
return nil, "tail"
elseif h > self._head then
return nil, "head"
end
local acked = {};
self._tail = h;
local expect = self._head - self._tail;
while expect < self._queue:count() do
local v = self._queue:pop();
if not v then return nil, "pop" end
table.insert(acked, v);
end
return acked
end
function smqueue:count_unacked() return self._head - self._tail end
function smqueue:count_acked() return self._tail end
function smqueue:resumable() return self._queue:count() >= (self._head - self._tail) end
function smqueue:resume() return self._queue:items() end
function smqueue:consume() return self._queue:consume() end
function smqueue:table()
local t = {};
for i, v in self:resume() do t[i] = v; end
return t
end
local function freeze(q) return { head = q._head; tail = q._tail } end
local queue_mt = { __name = "smqueue"; __index = smqueue; __len = smqueue.count_unacked; __freeze = freeze }
function lib.new(size)
assert(size > 0);
return setmetatable({ _head = 0; _tail = 0; _queue = queue.new(size, true) }, queue_mt)
end
return lib