Stackless Python In Eve

Stackless Python in EVE Kristján Valur Jónsson [email_address] CCP Games inc.

EVE ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

The Tranquility cluster ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

EVE Architecture ,[object Object],[object Object],[object Object]

Stackless Python ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Stackless? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Channel semantics ,[object Object],[object Object],[object Object],[object Object],[object Object]

Channel semantics, cont. ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Stackless in EVE ,[object Object],[object Object],[object Object],[object Object],[object Object]

The main loop ,[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],The main loop cont. PyObject* EveApp::WinMain(PyObject *self, PyObject *args) { PyOS->ExecFile("script:/sys/autoexec.py"); MSG msg; while(PeekMessage(&msg, 0, 0, 0, PM_REMOVE)){ TranslateMessage(&msg); DispatchMessage(&msg); } for (TickIt i = mTickers.begin(; i != mTickers.end(); i++) i->mCb-> OnTick (mTime, (void*)taskname); }

Autoexec.py import blue def Startup(): import service srvMng = service.ServiceManager() run = ["dataconfig", "godma", “ui", …] srvMng.Run(run) #Start up the client in a tasklet! if CheckDXVersion(): import blue blue.pyos. CreateTasklet (Startup, (), {})

Tickers ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

The PyOS tick: ,[object Object],[object Object],Tick() { … mSynchro->Tick() PyObject *watchdogResult; do { watchdogResult = PyStackless_RunWatchdog(20000000); if (!watchdogResult) PyFlushError("PumpPython::Watchdog"); Py_XDECREF(watchdogresult); } while (!watchdogResult);

blue.pyos.synchro ,[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],blue.pyos.synchro cont.

blue.pyos.synchro, ctd. ,[object Object],[object Object],[object Object],[object Object]

Points to note: ,[object Object],[object Object],[object Object],[object Object]

Socket Receive ,[object Object],[object Object],[object Object],[object Object]

Receive, cont. ,[object Object],[object Object],[object Object],[object Object]

Main Tasklet ,[object Object],[object Object],[object Object],[object Object],[object Object]

Channel magic ,[object Object],[object Object],[object Object],[object Object]

Co-operative multitasking ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Tasklets ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Example: UI Event: ,[object Object],[object Object],[object Object],def OnGlobalUp(self, *args): if not self or self.destroyed: return mo = eve.triapp.uilib.mouseOver if mo in self.children: uthread.new(mo._OnClick) class Action(xtriui.QuickDeco): def _OnClick(self, *args): pass

That’s all ,[object Object],[object Object],[object Object],[object Object],[object Object]

Stackless Python In Eve

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Stackless Python In Eve