While these assertions look right at the first glance,
they actually crash the program. That's because GObject
insists on initializing all construct-only properties
to their default values, which results in
g_win32_registry_key_set_property() being called multiple
times with NULL string, once for each unset property.
If "path" is actually set by the caller, a subsequent
call to set "path-utf16" to NULL will fail an assertion,
since absolute_path is already non-NULL.
With assertions moved the set-to-NULL calls bail out before
an assertion is made.
This ensures that we do really export the symbols for Visual
Studio-style builds, by using _GLIB_EXTERN to decorate the generated
prototypes and including config.h so that we are sure the symbols are
actually exported.
This adds three options to gdbus-codegen so that we may be able to
use a self-defined symbol decorator, such as _GLIB_EXTERN, to decorate
the generated prototypes, to be used possibly to export the symbols, if
needed.
The other two options allows including headers that are required for the
specified symbol decorator to be usable and preprocessor macros that are
required for the symbol decorator to be defined appropriately, also when
needed.
Have the generated .c code decorate the prototypes with "G_MODULE_EXPORT"
instead of "extern" when --internal is not being used, so that we also
export the symbols from the generated code on Visual Studio-style
compilers. If --internal is used, we decorate the prototypes with
"G_GNUC_INTERNAL", as we did before.
Note that since the generated .c code does not attempt to include the
generated headers (if one is also generated), the gnerated headers are
still generated as they were before.
Sometimes this test was timing out due to the file monitor notifications
taking longer than the arbitrary 2s delay before ending the test and
checking its results at the end of `iclosed_cb()`.
Avoid that timing-dependence by ending the test when the expected file
monitor notifications are seen, or after a 10s timeout (if so, the test
is failed).
This makes the test run 4× faster in the normal case, as it’s no longer
waiting for a timeout to elapse if the file monitor notifications come
in sooner.
Signed-off-by: Philip Withnall <withnall@endlessm.com>
The test added for #1841 spawned 100000 threads. That was fine on a
desktop machine, but on a heavily loaded CI machine, it could result in
large (and unpredictable) slowdowns, resulting in the test taking over
120s in about 1 in 5 runs, and hence failing that CI pipeline due to a
timeout. When passing normally on CI, the test would take around 90s.
Here’s a histogram of time per iteration on a failing (timed out) test
run. Each iteration is one thread spawn:
Iteration duration (µs) | Frequency
------------------------+----------
≤100 | 0
100–200 | 30257
200–400 | 13696
400–800 | 1046
800–1000 | 123
1000–2000 | 583
2000–4000 | 3779
4000–8000 | 4972
8000–10000 | 1027
10000–20000 | 2610
20000–40000 | 650
40000–80000 | 86
80000–100000 | 10
100000–200000 | 2
>200000 | 0
There’s no actual need for the test to spawn 100000 threads, so rewrite
it to reuse a single thread, and pass new data to that thread.
Reverting the original commit (e4a690f5dd) reproduces the failure on
100 out of 100 test runs with this commit applied, so the test still
works.
The test now takes 3s, rather than 11s, to run on my computer, and has
passed when run with `meson test --repeat 1000 cancellable`.
Signed-off-by: Philip Withnall <withnall@endlessm.com>
An extra argument to g_win32_registry_key_get_value_w() and
g_win32_registry_key_get_value() indicates that RegLoadMUIStringW()
should be used instead of RegQueryValueExW(). It only works on
strings, and automatically resolves resource strings (the ones
that start with "@").
The extra argument is needed to find resource DLLs that are only
specified by their relative name.
It is critical to mention how the identity parameter is expected to be
handled. In particular, if identity is not passed, then the identity of
the server certificate will not be checked at all. This is in contrast
to the connection-level APIs, which are supposed to be fail-safe. The
database and certificate-level APIs are more manual.
There’s no need to call `access()` and then `stat()` on the keyring
directory to check that it exists, is a directory, and has the right
permissions. Just call `stat()`.
This eliminates one potential TOCTTOU race in this code.
Signed-off-by: Philip Withnall <withnall@endlessm.com>
Helps: #1954
There was a time-of-check-to-time-of-use (TOCTTOU) race in the keyring
lock code, where it would check the existence of the lock file using
`access()`, then proceed to call `open(O_CREAT | O_EXCL)` to try and
create the lock file once `access()` showed that it didn’t exist.
The problem is that, because this is happening in a shared directory
(`~/.dbus-keyrings`), another process could quite legitimately create
the lock file in the meantime.
Instead, unconditionally call `open()` and ignore errors from it (which
will be returned if the lock file already exists) until it succeeds (or
the code times out).
This eliminates the TOCTTOU race, and simplifies the timeout behaviour
so there aren’t two loops (check for existence, try to create)
happening. It brings this code in line with what dbus.git does (see
`_dbus_keyring_lock()`).
Signed-off-by: Philip Withnall <withnall@endlessm.com>
Fixes: #1954
When multiple tests were run in parallel, this would race on its access
to `~/.dbus-keyrings` to authenticate with the D-Bus server, since the
keyring directory was not appropriately sandboxed to the unit test.
Use `G_TEST_OPTION_ISOLATE_DIRS` to automatically isolate each unit
test’s directory usage.
Signed-off-by: Philip Withnall <withnall@endlessm.com>
Fixes: #1954
Commit 721e385 left one remaining race in the filter test, with a
comment associated with it. Unfortunately, the (seemingly unrelated)
changes in #1841 to `GCancellable` seem to have made this remaining race
a lot more likely to fail on FreeBSD than before.
What’s likely to have happened (although I was unable to reproduce the
failure, due to not having a FreeBSD system; I was only able to
reproduce the problem as a 3/1000 failure on Linux, which is still worth
fixing) is that the atomic write of the `FilterData.serial` to be
expected by the filter function sometimes happened after the filter
function had executed, so the expected message was dropped and didn’t
result in an update to the `FilterData` state.
Rework the test so that instead of setting some expectations (on
`FilterData`) in one thread and then checking them in another thread,
the worker thread just unconditionally returns messages from the filter
function to the main thread, and then the main thread checks whether the
expected one has been filtered.
With this change applied, the `gdbus-connection` test passes 5000 times
in a row for me, on Linux; and doesn’t seem to fail any more on the
FreeBSD CI machines over a few runs. (Previously it failed on 4/5 runs.)
Signed-off-by: Philip Withnall <withnall@endlessm.com>
Fixes: #2092Fixes: #1957
Mention in the documentation that (presumably for performance reasons)
the search results from `g_desktop_app_info_search()` are not filtered
by executable presence or hidden attribute.
Perhaps they should be in future, but for now we should at least
document it.
Spotted by Will Thompson.
Signed-off-by: Philip Withnall <withnall@endlessm.com>
By default, meson builds glib with -Werror=format=2, which
implies -Werror=format-nonliteral. With these flags, clang errors
out on e.g. the g_message_win32_error function, due to "format
string is not a string literal". This function takes a format
string, and passes the va_list of the arguments onwards to
g_strdup_vprintf, which is annotated with printf attributes.
When passing a string+va_list to another function, GCC doesn't warn
with -Wformat-nonliteral. Clang however does warn, unless the
functions themselves (g_message_win32_error and set_error) are decorated
with similar printf attributes (to force the same checks upon the
caller) - see
https://clang.llvm.org/docs/AttributeReference.html#format
for reference.
Adding these attributes revealed one existing mismatched format string
(fixed in the preceding commit).
The GIO tests memory-monitor-dbus and memory-monitor-portal use a number
of third party Python modules that may not be present when running the
test case.
Instead of failing due to missing imports, catch the ImportError and
mock a test case that skips. This can't use the usual unittest.skip
logic because the test case class itself uses a 3rd party module.
Closes#2083.
There are two memory monitor tests that use Python's unittest module directly,
but GLib tests should be outputting TAP. Use the embedded TAPTestRunner to
ensure that TAP is output for these tests too.
The G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE attribute doesn't have to be
always set. See https://gitlab.gnome.org/GNOME/gvfs/-/merge_requests/68
for more details. In that case, the g_file_query_default_handler function
fails with the "No application is registered as handling this file" error.
Let's fallback to the "standard::fast-content-type" attribute instead to
fix issues when opening such files.
https://gitlab.gnome.org/GNOME/nautilus/-/issues/1425
Meson 0.54.0 added a new method meson.override_dependency() that must be
used to ensure dependency consistency. This patch ensures a project that
depends on glib will never link to a mix of system and subproject
libraries. It would happen in such cases:
The system has glib 2.40 installed, and a project does:
dependency('glib-2.0', version: '>=2.60',
fallback: ['glib', 'glib_dep'])
dependency('gobject-2.0')
The first call will configure glib subproject because the system libglib
is too old, but the 2nd call will return system libgobject.
By overriding 'gobject-2.0' dependency while configuring glib subproject
during the first call, meson knows that on the 2nd call it must return
the subproject dependency instead of system dependency.
This also has the nice side effect that with Meson >0.54.0 an
application depending on glib can declare the fallback without knowing
the dependency variable name: dependency('glib-2.0', fallback: 'glib').
