10 Commits

Author SHA1 Message Date
Daniel P. Berrangé
695bdb3841 src: ensure GSource background unref happens in correct event loop
The g_idle_add function adds a callback to the primary GMainContext.

To workaround the GSource unref bugs, we need to add our callbacks
to the GMainContext that is associated with the GSource being
unref'd. Thus code using the per-VM virEventThread must use its
private GMainContext.

Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2021-03-17 09:16:05 +00:00
Martin Kletzander
8964564550 util: Move glib event loop workaround to glibcompat
This way it can be used from other places as well.

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2021-03-05 10:17:26 +01:00
Daniel P. Berrangé
9801f91a8e util: squelch G_DEFINE_TYPE volatile warnings with GCC 11
In this previous commit:

  commit 65491a2dfe00bfcf9f09a8d6eab60234b56c8cc4
  Author: Martin Kletzander <mkletzan@redhat.com>
  Date:   Thu Nov 12 13:58:53 2020 +0100

    Do not disable incompatible-pointer-types-discards-qualifiers

We selectively rewrite G_DEFINE_TYPE to avoid warnings about
mismatched volatile/non-volatile pointers that appeared with
CLang when using GLib2 >= 2.67

We have now just hit the reverse problem, GCC >= 11 has started
warning about mismatched volatile/non-volatile pointers but only
with GLib2 < 2.67. The new GLib2 avoids the warning, as does
older GCC.

Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2020-12-03 15:01:43 +00:00
Martin Kletzander
65491a2dfe Do not disable incompatible-pointer-types-discards-qualifiers
This reverts commit b3710e9a2af402a2b620de570b062294e11190eb.

That check is very valuable for our code, but it causes issue with glib >=
2.67.0 when building with clang.

The reason is a combination of two commits in glib, firstly fdda405b6b1b which
adds a g_atomic_pointer_{set,get} variants that enforce stricter type
checking (by removing an extra cast) for compilers that support __typeof__, and
commit dce24dc4492d which effectively enabled the new variant of glib's atomic
code for clang.  This will not be necessary when glib's issue #600 [0] (8 years
old) is fixed.  Thankfully, MR #1719 [1], which is supposed to deal with this
issue was opened 3 weeks ago, so there is a slight sliver of hope.

[0] https://gitlab.gnome.org/GNOME/glib/-/issues/600
[1] https://gitlab.gnome.org/GNOME/glib/-/merge_requests/1719

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
2020-11-18 11:01:50 +01:00
Daniel P. Berrangé
d6f7d1a4d6 util: add compat impl of g_canonicalize_filename
g_canonicalize_filename was not introduced until glib 2.58
so we need a temporary backport of its impl.

Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2020-01-07 14:42:26 +00:00
Daniel P. Berrangé
b14ad26738 util: keep glib compat methods in alphabetical order
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2020-01-07 14:42:26 +00:00
Daniel P. Berrangé
14c136443c util: always replace g_fsync usage with our wrapper
g_fsync was introduced in 2.63 which is newer than our minimum
glib version. A future commit will introduce compile time
checking of API versions to prevent accidental usage of APIs
from glib newer than our min declared.

To avoid triggering this warning, however, we need to ensure
that we always use our wrapper function via glibcompat.c,
which will disable the API version warnings.

Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2020-01-07 14:42:26 +00:00
Daniel P. Berrangé
41d9bba57e util: add compat wrapper for g_fsync
g_fsync isn't available until 2.63 so we need a compat
wrapper temporarily.

Reviewed-by: Fabiano Fidêncio <fidencio@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2020-01-03 15:42:12 +00:00
Daniel P. Berrangé
4eed65abec src: always pull in glib/gstdio.h header
The gstdio.h header defines some low level wrappers for
things like fsync, stat, lstat, etc.

Reviewed-by: Fabiano Fidêncio <fidencio@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2020-01-03 15:42:12 +00:00
Michal Privoznik
9706476254 glibcompat: Reimplement g_strdup_printf() and g_strdup_vprintf()
These functions don't really abort() on OOM. The fix was merged
upstream, but not in the minimal version we require. Provide our
own implementation which can be removed once we bump the minimal
version.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2019-10-18 15:32:04 +02:00