This chapter describes describes some hints for developers.
There is not so much to say about that, just take a look at the existing
The Tab-Width is eight with an indent of fore. Please make a space between operators and operands.
NEVER call NgFuncGetStats() with the clear parameter set to true, because there are other functions (echo requests/replies, bandwidth management) wich relies on increasing link-stats. Mpd carries a copy of the netgraph link-stats at link-level, just use these instead. You can call LinkUpdateStats() for updating the internal stats-struct.
Authentication backends must run independently from the rest of Mpd, i.e.
you must not access any Mpd resource, because
the authentication process is started in its own thread (you have to
take care about thread-safety). An
AuthData object is passed
to your authenticating function which carries a copy of all required
information. If your backend provides other parameters, like MTU, IP, etc.
then put these at the appropriate place into
If you can't avoid reading from Mpd's internal data, then acquire the Giant Mutex:
[...] pthread_mutex_lock(&gGiantMutex); [do whatever] pthread_mutex_unlock(&gGiantMutex); [...]