It is safe not to copy arguments here,
because we are not emitting any signals
before we are done setting the values
as properties.
This matches what we do for g_object_new now.
We can safely use the values without copying here.
This is safe because we are not emitting any
signals before we are done setting the values
as properties.
Make the 'complex construction' case more
realistic by adding a string property.
And mark the properties as G_PARAM_STATIC_STRINGS,
since this is commonly done, and doing so will
enable some optimizations.
Also, use g_object_class_install_properties,
to test optimizations that will be tied to using
that function.
xdgmime makes some one-off allocations when being set up. Ignore them in
the suppression file, since they’re not really a leak.
This should fix the contenttype test running under valgrind.
Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
It does some unusual things with memory pages and allocation, and
testing that with valgrind (a) fails and (b) probably isn’t useful
anyway.
Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
This is a fallback timeout to abort the test if the expected number of
messages aren’t seen in time. However, when running the test under
valgrind it will take longer and sometimes spuriously trigger the
timeout.
There’s no point in having an abort timeout inside the test: the test
runner (Meson) already provides one for us, which we can adjust with a
multiplier when running under valgrind.
So removes the timeout from within the test. This should fix the
gnotification test under valgrind.
Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
They are [currently
failing](https://gitlab.gnome.org/GNOME/glib/-/jobs/2032874) with the
error:
```
1/273 glib:glib / array-test FAIL 0.19s killed by signal 11 SIGSEGV
05:04:16 G_DEBUG=gc-friendly G_TEST_BUILDDIR=/builds/GNOME/glib/_build/glib/tests MALLOC_CHECK_=2 MALLOC_PERTURB_=133 G_TEST_SRCDIR=/builds/GNOME/glib/glib/tests valgrind --tool=memcheck --error-exitcode=1 --track-origins=yes --leak-check=full --leak-resolution=high --num-callers=50 --show-leak-kinds=definite,possible --show-error-list=yes --suppressions=/builds/GNOME/glib/tools/glib.supp /builds/GNOME/glib/_build/glib/tests/array-test
----------------------------------- output -----------------------------------
stderr:
valgrind: m_libcfile.c:66 (vgPlain_safe_fd): Assertion 'newfd >= VG_(fd_hard_limit)' failed.
------------------------------------------------------------------------------
```
I’m not really sure what that means, but `show-execution-environment.sh`
says the FD soft limit is set to 524288 on the CI machine. That seems
high; on my machine it’s only 1024 (and the valgrind tests pass). So
let’s try 1024.
The valgrind CI has been failing since we most recently upgraded the CI
image to a new version of Fedora.
Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
This re-applies a chunk from commit e63262d49d which was
accidentally lost when upstreaming the commit to xdgmime (as
https://gitlab.freedesktop.org/xdg/xdgmime/-/merge_requests/10).
The upstreamed commit was then re-backported to GLib as a1bfe899ab,
without the missing chunk.
The missing chunk is potentially causing incorrect content type results
for `file://` URIs when used from webkitgtk.
Thanks to Stephen Jung and Michael Catanzaro for investigating.
Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
Fixes: #2639
None of these messages are particularly helpful, but they increase the
overall test log output size, which has to be stored by the CI for every
test run.
With these messages removed, the size of a full test log is reduced from
6.5MB to 1.8MB for me.
Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
This may have been causing an intermittent failure of the pollable test
on BSD, where updating the readable status of a socket takes a bit
longer than on Linux.
```
GLib-GIO-DEBUG: 16:06:41.235: GSocketClient: Starting application layer connection
GLib-GIO-DEBUG: 16:06:41.235: GSocketClient: Connection successful!
Bail out! GLib-GIO:ERROR:../gio/tests/pollable.c:73:check_source_readability_callback: assertion failed (readable == expected): (0 == 1)
```
I have not debugged the test on BSD, though, so this is only a guess.
See https://gitlab.gnome.org/GNOME/glib/-/jobs/2022087
Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
This should make each unit test a bit more self-contained and easier to
verify that they’re independent.
Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
This test is opportunistic in that it’s not possible to detect whether
the race condition has been hit (other than by hitting a deadlock).
So the only approach we can take for testing is to loop over the code
which has previously been known to cause a deadlock a number of times.
The number of repetitions is chosen from running the test with the
deadlock fix reverted.
Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
Helps: #1941
This should prevent unbounded growth of the `event_queue` in the
unlikely case that the `GSource` is removed from its `GMainContext` and
destroyed separately from the `GFileMonitor`.
I’m not sure if that can currently happen, but it could with future
refactoring, so it’s best to address the possibility now while we’re
thinking about this bit of code.
Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
Helps: #1941
Taking a reference to the GFileMonitor when handling events may cause
object destruction from th worker thread that calls the function. This
condition happens if the surrounding code drops the otherwise last
reference ot the GFileMonitor. The series of events causes destruction
from an unrelated worker thread and also triggers g_file_monitor_cancel
to be called from g_file_monitor_source_handle_event.
For the inotify backend, this results in a deadlock as cancellation
needs to take a lock that protects data structures from being modified
while events are dispatched.
One alternative to this approach might be to add an RCU (release, copy,
update) approach to the lists contained in the wd_dir_hash and
wd_file_hash hash tables.
Fixes: #1941
An example stack trace of this happening is:
Thread 2 (Thread 0x7fea68b1d640 (LWP 260961) "gmain"):
#0 syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1 0x00007fea692215dc in g_mutex_lock_slowpath (mutex=mutex@entry=0x7fea6911e148 <g.inotify_lock_lock>) at ../glib/gthread-posix.c:1493
#2 0x00007fea69222062 in g_mutex_lock (mutex=mutex@entry=0x7fea6911e148 <g.inotify_lock_lock>) at ../glib/gthread-posix.c:1517
#3 0x00007fea6908025a in _ih_sub_cancel (sub=0x1492620) at ../gio/inotify/inotify-helper.c:131
#4 0x00007fea6907f9da in g_inotify_file_monitor_cancel (monitor=0x14a3550) at ../gio/inotify/ginotifyfilemonitor.c:75
#5 0x00007fea68fae959 in g_file_monitor_cancel (monitor=0x14a3550) at ../gio/gfilemonitor.c:241
#6 0x00007fea68fae9dc in g_file_monitor_dispose (object=0x14a3550) at ../gio/gfilemonitor.c:123
#7 0x00007fea69139341 in g_object_unref (_object=<optimized out>) at ../gobject/gobject.c:3636
#8 g_object_unref (_object=0x14a3550) at ../gobject/gobject.c:3553
#9 0x00007fea6907507a in g_file_monitor_source_handle_event (fms=0x14c3560, event_type=<optimized out>, child=0x7fea64001460 "spawned-1", rename_to=rename_to@entry=0x0, other=other@entry=0x0, event_time=<optimized out>) at ../gio/glocalfilemonitor.c:457
#10 0x00007fea6907fe0e in ih_event_callback (event=0x7fea64001420, sub=0x1492620, file_event=<optimized out>) at ../gio/inotify/inotify-helper.c:218
#11 0x00007fea6908075c in ip_event_dispatch (dir_list=dir_list@entry=0x14c14c0, file_list=0x0, event=event@entry=0x7fea64001420) at ../gio/inotify/inotify-path.c:493
#12 0x00007fea6908094e in ip_event_dispatch (event=0x7fea64001420, file_list=<optimized out>, dir_list=0x14c14c0) at ../gio/inotify/inotify-path.c:448
#13 ip_event_callback (event=0x7fea64001420) at ../gio/inotify/inotify-path.c:548
#14 ip_event_callback (event=0x7fea64001420) at ../gio/inotify/inotify-path.c:530
#15 0x00007fea69081391 in ik_source_dispatch (source=0x14a2bf0, func=0x7fea69080890 <ip_event_callback>, user_data=<optimized out>) at ../gio/inotify/inotify-kernel.c:327
#16 0x00007fea691d0824 in g_main_dispatch (context=0x14a2cc0) at ../glib/gmain.c:3417
#17 g_main_context_dispatch (context=0x14a2cc0) at ../glib/gmain.c:4135
#18 0x00007fea691d0b88 in g_main_context_iterate (context=context@entry=0x14a2cc0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/gmain.c:4211
#19 0x00007fea691d0c2f in g_main_context_iteration (context=0x14a2cc0, may_block=may_block@entry=1) at ../glib/gmain.c:4276
#20 0x00007fea691d0c81 in glib_worker_main (data=<optimized out>) at ../glib/gmain.c:6176
#21 0x00007fea691f9c2d in g_thread_proxy (data=0x1487cc0) at ../glib/gthread.c:827
#22 0x00007fea68d93b1a in start_thread (arg=<optimized out>) at pthread_create.c:443
#23 0x00007fea68e18650 in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:81
This introduces no functional changes but will make refactoring a bit
easier in the following commit.
Signed-off-by: Philip Withnall <pwithnall@endlessos.org>
GArray supports a "zero_terminated" flag, but GPtrArray doesn't.
This is odd, because especially for a pointer array it makes sense
to have a %NULL sentinel. This would be for example useful to track
or construct a strv array with a GPtrArray.
As workaround for this missing feature you could use a GArray instead
(ugly) or to explicitly add the %NULL element. However the latter increases
the "len" of the array, which can be problematic if you want to still use
the GPtrArray for other purposes.
Add API for marking a GPtrArray as %NULL terminated. In that case, the
API will ensure that there is always a valid %NULL sentinel after the
array. Note that the API does not enforce that a %NULL terminated API
actually has any data allocated. That means, even with a %NULL terminated
array, pdata can still be %NULL (only if len is zero).
Add g_ptr_array_new_null_terminated() constructor. The null-terminated flag
cannot be cleared. Once the GPtrArray is flagged to be %NULL terminated, it
sticks. The purpose is that once a user checks whether a GPtrArray instance
is safe to be treated as a %NULL terminated array, the decision does
not need to be re-evaluated.
Also add a g_ptr_array_is_null_terminated(). That is useful because it
allows you to check whether a GPtrArray created by somebody else is safe
to use as a %NULL terminated array. Since there is no API to make an
array not %NULL terminated anymore, this is not error prone.
The new flag is tracked as a guint8 in GRealPtrArray. On common 64 bit
architectures this does not increase the size of the struct as it fits
in an existing hole. Note that this is not a bitfield because it's
probably more efficient to access the entire guint8. However, there is
still a 3 bytes hole (on common 32 and 64 architectures), so if we need
to add more flags in the future, we still have space for 24 bits,
despite the new flag not being a bitfield.
The biggest downside of the patch is the runtime overhead that most
operations now need to check whether %NULL termination is requested.
Includes some tweaks and additional tests by Philip Withnall.
https://gitlab.gnome.org/GNOME/glib/-/issues/353
