On Thu, Dec 3, 2009 at 4:14 PM, Arvid Picciani <aep@xxxxxxxx> wrote: [...] Well, let's see: 1. DBus has an user space daemon I _think_ that this eases the transition of messages between the applications and the user space bus. This also happens with Jack Audio Connection Kit. Indeed, clients can't connect to it if the daemon is started by root and the clients are started by normal users. 2. Some applications don't work if DBus is not started. This is a possible bug in the application, is not a failure of DBus. Maybe the developers think that is not feasible to support more than one type of IPC mechanism, so they choose one and go with it. If you can convince them to use DBus optionally, and the features that depend on it can be simply turned off without the application losing too much, fine. I think that indeed that is the case with X server, isn't it? It is only a matter of configuring xorg.conf to disable it (maybe I'm confusing thing here). 4. There are other IPC mechanisms Yes, there are. But I think that each one has some drawbacks too. CORBA, for example, is too heavy for simple use (Gnome developers can tell a good story about that). XMLRPC needs a HTTP server or something like that and the overhead of the communication protocol is not very efficient for local use. Maybe there's another IPC mechanism that is good, but maybe it doesn't have everything that DBus have (for example, activation of daemons on demand). 5. DBus is hierarchical As is your filesystem too. There's a good reason for that. Hierarchy per se is not a bad thing and in DBus it is well used. It separates objects in categories, so that functions with different purposes don't get mixed in a big namespace. Maybe you don't like the Object Oriented nomenclature, but it doesn't need to be called like that. You think in modules, containers, categories, bags, whatever name carries the idea of a collection of related operations. The fact that it is implemented as an object or not is not important for the client and the provider of the service don't need to be an object. Thanks for the people who posted (and keep posting!). The discussion is interesting, even if just for the anthropological point of view. And I'm not yet convinced that DBus should not exist :) -- A: Because it obfuscates the reading. Q: Why is top posting so bad? ------------------------------------------- Denis A. Altoe Falqueto -------------------------------------------
