Finalizing a message can trigger callbacks; that's bad, if we have a
connection locked.
In particular, if a message is received by the "left side", passed to
the "right side" and sent (as in test/relay.c (see the diagram there)
or in dbus-daemon), then finalizing that message could result in the
live messages counter for the left side, and the outgoing messages counter
for the right side, both being decremented while under either side's
lock.
After a message is dispatched on the left side, finalizing it now drops
the lock temporarily, to avoid this problem.
After a message is sent on the right side, finalizing it is now deferred
until the right side unlocks, by moving it to a new queue of
"expired messages" which is automatically cleared every time we release
the lock.
The "live messages" counter for the "left" connection will now explicitly
take the left connection's lock before decrementing, to avoid
manipulating watches without a lock.
Reviewed-by: Colin Walters <walters@verbum.org>
Bug: https://bugs.freedesktop.org/show_bug.cgi?id=34393
It's about to become more complex, to handle delayed deallocation of
messages in order to avoid triggering callbacks while locked.
Reviewed-by: Colin Walters <walters@verbum.org>
Bug: https://bugs.freedesktop.org/show_bug.cgi?id=34393
In all the places where counters are added, we're under a lock. The caller
knows what effect adding the counter might have, and can replicate it
in a lock-safe way if necessary.
Reviewed-by: Colin Walters <walters@verbum.org>
Bug: https://bugs.freedesktop.org/show_bug.cgi?id=34393
In general, dbus_message_unref should be avoided while holding locks,
because it can invoke arbitrary user callbacks (via attached data, or
via DBusCounter).
Reviewed-by: Colin Walters <walters@verbum.org>
Bug: https://bugs.freedesktop.org/show_bug.cgi?id=34393
When fd-passing is implemented, adjustments happen in pairs; in that case
we coalesce the two calls into one.
Reviewed-by: Colin Walters <walters@verbum.org>
Bug: https://bugs.freedesktop.org/show_bug.cgi?id=34393
Finalizing a message can call out to user code via dbus_message_set_data
(or to internal code not expecting locks to be held, via DBusCounter).
Reviewed-by: Colin Walters <walters@verbum.org>
Bug: https://bugs.freedesktop.org/show_bug.cgi?id=34393
The type system can be used independently, for instance in GVariant
(although GVariant's binary encoding is in fact not the same).
Bug: https://bugs.freedesktop.org/show_bug.cgi?id=38252
Reviewed-by: Lennart Poettering <lennart@poettering.net>
In a man page, "-" officially means a typographical (Unicode) hyphen,
which frequently breaks the ability to copy and paste code examples from
a man page. "\-" means the ASCII hyphen/minus character. See
<http://lintian.debian.org/tags/hyphen-used-as-minus-sign.html> for
more details.
Rather than trying to distinguish between hyphens, em-dashes and
hyphen/minus, I just replaced all ambiguous hyphens with \- by applying
this vim command repeatedly until it didn't find anything:
%s/\(^\|[^\\]\)-/\1\\-/g
Bug: https://bugs.freedesktop.org/show_bug.cgi?id=38284
Reviewed-by: Lennart Poettering <lennart@poettering.net>
We've just decremented the refcount, so it should have been at least 1
before we did that.
Reviewed-by: Cosimo Alfarano <cosimo.alfarano@collabora.co.uk>
Bug: https://bugs.freedesktop.org/show_bug.cgi?id=38005
Also rename HTML_FILES to XMLTO_OUTPUT, as a more self-describing name:
we have other HTML files which are not the output from xmlto.
Bug: https://bugs.freedesktop.org/show_bug.cgi?id=36156
Reviewed-by: Will Thompson <will.thompson@collabora.co.uk>
Pre-setting XSLTPROC interferes with AC_CHECK_PROGS letting the user
override choice of program via the environment.
Reviewed-by: Will Thompson <will.thompson@collabora.co.uk>
Bug: https://bugs.freedesktop.org/show_bug.cgi?id=36156
This is necessary when cross-compiling from Linux to mingw32 and running
the resulting tests under Wine. (This partially works! Some tests fail,
though.)
Reviewed-by: Will Thompson <will.thompson@collabora.co.uk>
If DIST_SUBDIRS isn't set, it defaults to SUBDIRS, so it's just noise.
Running tests before building documentation is an easy way to speed up the
hack/make check/fix cycle, by not wasting time rebuilding the
documentation (which is often slow) until all the tests compile and pass.
https://bugs.freedesktop.org/show_bug.cgi?id=34405
Reviewed-by: Will Thompson <will.thompson@collabora.co.uk>
This improves clarity, and makes conflicts less likely and merges more
obviously correct.
Bug: https://bugs.freedesktop.org/show_bug.cgi?id=34405
Reviewed-by: Will Thompson <will.thompson@collabora.co.uk>
Surely it's broken to define SCM_RIGHTS but not the necessary structs to
do something useful with it, but whatever.
Bug: https://bugs.freedesktop.org/show_bug.cgi?id=33465
Reviewed-by: Will Thompson <will.thompson@collabora.co.uk>
This block should have been deleted in 2007, when IPv6 support was added:
previously, the fd allocated at the beginning of the function was used
for connect(), but for IPv6 support, the socket() call has to be inside
the loop over getaddrinfo() results so its address family can be changed.
Bug: https://bugs.freedesktop.org/show_bug.cgi?id=37258
Reviewed-by: Cosimo Alfarano <cosimo.alfarano@collabora.co.uk>
