[AD] [ alleg-Bugs-2333410 ] think of a way to allocate user event type numbers.

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Bugs item #2333410, was opened at 2008-11-23 16:40
Message generated for change (Comment added) made by eglebbk
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Category: Core Library
Group: 4.9
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Milan Mimica (mmimica)
Assigned to: Nobody/Anonymous (nobody)
Summary: think of a way to allocate user event type numbers.

Initial Comment:
Find a clever way to allocate a unique number for a user event type. Currently users freely choose the numbers which can easily lead to collisions between libs (and parts of allegro itself).

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>Comment By: Evert Glebbeek (eglebbk)
Date: 2008-11-27 02:52

Message:
How about:

static int allocated_user_events = 100;

int al_get_free_user_event_id(void) // Needs a better name
{
   return allocated_user_events++;
}

That way events 0-99 are "reserved" (although we can of course always
increase this if we need to).
I think this is the easiest and most straightforward way to do it. The
only thing to watch out for is multiple threads requesting event IDs at the
same time, although I suspect this wouldn't be a major problem in practice
if we leave it be. For good measure it should probably have a mutex lock in
there though.

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