Many (if not "almost all") programs that spawn other programs via
g_spawn_sync() or the like simply want to check whether or not the
child exited successfully, but doing so requires use of
platform-specific functionality and there's actually a fair amount of
boilerplate involved.
This new API will help drain a *lot* of mostly duplicated code in
GNOME, from gnome-session to gdm. And we can see that some bits even
inside GLib were doing it wrong; for example checking the exit status
on Unix, but ignoring it on Windows.
https://bugzilla.gnome.org/show_bug.cgi?id=679691
The docs for GString should really mention GByteArray, and what makes
it different. Drop the comparison to Java which is dated and actually
inaccurate (because StringBuffer operates on Unicode).
While we're here, add g_string_free_to_bytes(), which further
complements the spread of GBytes-based API. For example, one can
create a buffer using GString, then send it off via
g_output_stream_write_bytes().
https://bugzilla.gnome.org/show_bug.cgi?id=677064
They make a full (deep) copy of a list.
In contrast with g_[s]list_copy(), these functions take a function as a argument
to make a copy of each list element, in addition to copying the list container itself.
The functions g_[s]list_copy() were reimplemented to just call the new functions
with NULL as the function argument, which will behave like current implementation.
https://bugzilla.gnome.org/show_bug.cgi?id=675024
The way gtk-doc works, we need compiling.sgml in both
content_files (to make sure it ends up in the disted tarball)
and in expand_content_files (to have references expanded).
There are cases when it should be possible to define at compile time
what range of functions and types should be used, in order to get,
or restrict, the compiler warnings for deprecated or newly added
types or functions.
For instance, if GLib introduces a deprecation warning on a type in
version 2.32, application code can decide to specify the minimum and
maximum boundary of the used API to be 2.30; when compiling against
a new version of GLib, this would produce the following results:
- all deprecations introduced prior to 2.32 would emit compiler
warnings when used by the application code;
- all deprecations introduced in 2.32 would not emit compiler
warnings when used by the application code;
- all new symbols introduced in 2.32 would emit a compiler warning.
Using this scheme it should be possible to have fairly complex
situations, like the following one:
assuming that an application is compiled with:
GLIB_VERSION_MIN_REQUIRED = GLIB_VERSION_2_30
GLIB_VERSION_MAX_ALLOWED = GLIB_VERSION_2_32
and a GLib header containing:
void function_A (void) GLIB_DEPRECATED_IN_2_26;
void function_B (void) GLIB_DEPRECATED_IN_2_28;
void function_C (void) GLIB_DEPRECATED_IN_2_30;
void function_D (void) GLIB_AVAILABLE_IN_2_32;
void function_E (void) GLIB_AVAILABLE_IN_2_34;
any application code using the above functions will get the following
compiler warnings:
function_A: deprecated symbol warning
function_B: deprecated symbol warning
function_C: no warning
function_D: no warning
function_E: undefined symbol warning
This means that it should be possible to gradually port code towards
non-deprecated API gradually, on a per-release basis.
https://bugzilla.gnome.org/show_bug.cgi?id=670542
Add new macros to disable -Wdeprecated-declarations around a piece of
code, using the C99 (and GNU89) _Pragma() operator. Replace the
existing use of #pragma for this in gio, and suppress the warnings in
gvaluearray.c as well.
https://bugzilla.gnome.org/show_bug.cgi?id=669671
Like GPtrArray has a "free function" that can be used to free memory
associated to each pointer in the array, GArray would benefit from
having a "clear function" that can be used to clear the content of
each element of the array when it's removed, or when the entire array
is freed.
https://bugzilla.gnome.org/show_bug.cgi?id=667243
Raised by Matthias in bgo#665685 but which I didn't spot until after pushing
commit 3ac7c35656649b1d1fcf2ccaa670b854809d4cd8.
Renames G_UNICHAR_MAX_DECOMPOSITION_LEN to G_UNICHAR_MAX_DECOMPOSITION_LENGTH
and fixes a few documentation issues.
See: bgo#665685
* Represents an immutable reference counted block of memory.
* This is basically the internal glib GBuffer structure exposed,
renamed, and with some additional capabilities.
* The GBytes name comes from python3's immutable 'bytes' type
* GBytes can be safely used as keys in hash tables, and have
functions for doing so: g_bytes_hash, g_bytes_equal
* GByteArray is a mutable form of GBytes, and vice versa. There
are functions for converting from one to the other efficiently:
g_bytes_unref_to_array() and g_byte_array_free_to_bytes()
* Adds g_byte_array_new_take() to support above functions
https://bugzilla.gnome.org/show_bug.cgi?id=663291
Instead of:
warning: ‘g_variant_get_gtype’ is deprecated (declared at ../../gobject/glib-types.h:242): Use '((GType) ((21) << (2)))' instead [-Wdeprecated-declarations]
show:
warning: ‘g_variant_get_gtype’ is deprecated (declared at ../../gobject/glib-types.h:242): Use ''G_VARIANT_GET_TYPE'' instead [-Wdeprecated-declarations]
Also, document the macro-expansion problem in the
G_GNUC_DEPRECATED_FOR docs
The documentation for maybe types failed to mention 'a' as one of the
types that was handled with a single pointer for which NULL means
"nothing". Correct that omission.
Problem caught by Shaun McCance.
We clean up the detection of if we should do 'real' atomic operations or
mutex-emulated ones with the introduction of a new (public) macro:
G_ATOMIC_LOCK_FREE. If defined, our atomic operations are guaranteed to
be done in hardware.
We need to use __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4 to determine if our
compiler supports GCC-style atomic operations from the gatomic.h header
because we might be building a program against GLib using a different
set of compiler options (or a different compiler) than was used to build
GLib itself.
Unfortunately, this macro is not available on clang, so it has currently
regressed to using the mutex emulation. A bug about that has been
opened here:
http://llvm.org/bugs/show_bug.cgi?id=11174
Adds g_key_file_ref and g_key_file_unref, to be used by a future
GKeyFile boxed type for language bindings.
Based on the patch by Christian Persch and Emmanuele Bassi.
Author: Christian Persch
Signed-off-by: Johan Dahlin
Signed-off-by: Giovanni Campagna
https://bugzilla.gnome.org/show_bug.cgi?id=590808
When spawning a child process, it is not safe to call setenv() before
the fork() (because setenv() isn't thread-safe), but it's also not
safe to call it after the fork() (because it's not async-signal-safe).
So the only safe way to alter the environment for a child process from
a threaded program is to pass a fully-formed envp array to
exec*/g_spawn*/etc.
So, add g_environ_getenv(), g_environ_setenv(), and
g_environ_unsetenv(), which act like their namesakes, but work on
arbitrary arrays rather than working directly on the environment.
http://bugzilla.gnome.org/show_bug.cgi?id=659326
