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Re: Reading D-Bus messages


From: YAMAMOTO Mitsuharu
Subject: Re: Reading D-Bus messages
Date: Wed, 12 Aug 2009 20:47:56 +0900
User-agent: Wanderlust/2.14.0 (Africa) SEMI/1.14.6 (Maruoka) FLIM/1.14.8 (Shij┼Ź) APEL/10.6 Emacs/22.3 (sparc-sun-solaris2.8) MULE/5.0 (SAKAKI)

>>>>> On Wed, 12 Aug 2009 12:43:14 +0200, Michael Albinus <address@hidden> said:

>> Usually we monitor file/socket descriptors in such cases.  D-Bus
>> seems to have a mechanism DBusWatch for this purpose.

> DBusWatch allows you to install handlers. IIUC, those handlers are
> called only when dbus_watch_handle() has been applied. File
> descriptors are not monitored in the sense, that a handler is
> called, when there are incoming messages. This still means polling.

I mentioned DBusWatch because the documentation of
dbus_connection_get_socket/dbus_connection_get_unix_fd says "DO NOT
read or write to the file descriptor, or try to select() on it; use
DBusWatch for main loop integration."  For your purpose, doing
select() on the file/socket descriptor in wait_reading_process_output
(in process.c) is most important.

                                     YAMAMOTO Mitsuharu
                                address@hidden




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