When the child process is going to exit on error after fork() but before
exec(), let's close the child_err_report_fd. The practical value of this
is to placate valgrind --track-fds=yes.
The new merge request link only works when logged in to a GitLab
account, unfortunately. Make that clear in the readme.
Signed-off-by: Philip Withnall <pwithnall@gnome.org>
Fixes: #3460
When we invoke a shell script directly, the system selects a bash binary
that might be different from the one detected by find_program('bash').
Explicitly use the one detected by Meson, matching the behavior of our
other test() invocations on shell scripts.
Fixes test failure on Windows in GitHub Actions CI:
stdout: 1: UNKNOWN: Windows Subsystem for Linux has no installed distributions.
stdout: 2: UNKNOWN: Distributions can be installed by visiting the Microsoft Store:
stdout: 3: UNKNOWN: https://aka.ms/wslstore
Found-by: Benoit Pierre <benoit.pierre@gmail.com>
Fixes: d7601f7eed ("Incorporate some lint checks into `meson test`")
The test in `unix-mounts` to see whether `g_unix_mounts_get_from_file()`
can parse an example file was working fine when GLib is built with
libmount, but not when built without it (and hence typically using
`getmntent()`).
This is because libmount supports mountinfo files (like
`/proc/self/mountinfo`), but `getmntent()` only supports mount files
(like `/proc/mounts`). The test was written only with the former.
So, change the test to use mount files when GLib is built without
libmount support.
Signed-off-by: Philip Withnall <pwithnall@gnome.org>
Fixes: #3456
The build instructions for msys2 builds are stored outwith
`.gitlab-ci.yml`.
We need to build a specific (recent) version of gobject-introspection so
we can get support for async annotations in `g-ir-scanner`. See !3746.
Fixes commit 93271385f9.
Signed-off-by: Philip Withnall <pwithnall@gnome.org>
It’s unclear why there was a hole in this. Let’s keep things less
confusing by eliminating it.
Fixes commit 453dd4be9e.
Signed-off-by: Philip Withnall <pwithnall@gnome.org>
The changes made in commit bc59e28bf6
(issue #3399) fixed introspection of the GThread API. However, they
introduced a trampoline in every threading function. So with those
changes applied, the disassembly of `g_mutex_lock()` (for example) was:
```
0x7ffff7f038b0 <g_mutex_lock> jmp 0x7ffff7f2f440 <g_mutex_lock_impl>
0x7ffff7f038b5 data16 cs nopw 0x0(%rax,%rax,1)
```
i.e. It jumps straight to the `_impl` function, even with an optimised
build. Since `g_mutex_lock()` (and various other GThread functions) are
frequently run hot paths, this additional `jmp` to a function which has
ended up in a different code page is a slowdown which we’d rather avoid.
So, this commit reworks things to define all the `_impl` functions as
`G_ALWAYS_INLINE static inline` (which typically expands to
`__attribute__((__always_inline__)) static inline`), and to move them
into the same compilation unit as `gthread.c` so that they can be
inlined without the need for link-time optimisation to be enabled.
It makes the code a little less readable, but not much worse than what
commit bc59e28bf6 already did. And perhaps
the addition of the `inline` decorations to all the `_impl` functions
will make it a bit clearer what their intended purpose is
(platform-specific implementations).
After applying this commit, the disassembly of `g_mutex_lock()`
successfully contains the inlining for me:
```
=> 0x00007ffff7f03d80 <+0>: xor %eax,%eax
0x00007ffff7f03d82 <+2>: mov $0x1,%edx
0x00007ffff7f03d87 <+7>: lock cmpxchg %edx,(%rdi)
0x00007ffff7f03d8b <+11>: jne 0x7ffff7f03d8e <g_mutex_lock+14>
0x00007ffff7f03d8d <+13>: ret
0x00007ffff7f03d8e <+14>: jmp 0x7ffff7f03610 <g_mutex_lock_slowpath>
```
I considered making a similar change to the other APIs touched in #3399
(GContentType, GAppInfo, GSpawn), but they are all much less performance
critical, so it’s probably not worth making their code more complex for
that sake.
Signed-off-by: Philip Withnall <pwithnall@gnome.org>
Fixes: #3417
As per https://gitlab.gnome.org/GNOME/glib/-/issues/3421#note_2206315:
It seems like there’s agreement that glib_debug should be enabled for
developers and disabled for distros; and it also seems like there’s no
reliable way to figure this out magically (because not everyone ties
things to `-Dbuildtype=*`). So, we’re left with forcing some group of
people to manually set the value of `glib_debug`. There are more
developers/contributors than there are distros, and distros are more
likely to notice an accidentally-slow GLib package than developers are
likely to notice an accidentally-not-asserting-hard-enough local build,
so let’s say:
The default should be `-Dglib_debug=enabled`, and distros should probably
all override that to `-Dglib_debug=disabled`.
Signed-off-by: Philip Withnall <pwithnall@gnome.org>
Fixes: #3421
