The use of system_thread is now limited to joining. We don't do that
for threads that we didn't create for ourselves, so we don't need to
call g_system_thread_self() to fill in system_thread for those.
Thanks to the modifications in 3d4846d923,
GStaticPrivate is not so directly tied in with GThread anymore. It is
now a simple matter to cut it out completely by using a GPrivate to
store the GArray instead of storing it in the GThread.
Give the macro wrapper treatment to g_once_init_enter() and leave() in
the same style that we did for gatomic.
It is now possible to use these macros with any pointer-sized object,
and not just gsize. The leave() macro ensures that the initialisation
result is a compatible type with the pointer that it is being written
to.
Just like with gatomic, there could be problems caused by use of (void*)
casts. We'll see how that goes, and reevaluate if necessary.
https://bugzilla.gnome.org/show_bug.cgi?id=660743
All locks are now zero-initialised, so we can drop the G_*_INIT macros
for them.
Adjust various users around GLib accordingly and change the docs.
https://bugzilla.gnome.org/show_bug.cgi?id=659866
This commit moves GStaticPrivate, g_thread_foreach and all
related functions and variables to gthread-deprecated.c. We
introduce some internal API to make this possible.
g_thread_foreach is not a very useful function, since there is
virtually nothing you can do with a GThread*, and implementing
it requires us to keep a list of threads around.
GStaticPrivate has been made redundant by adding comparable
capabilities to GPrivate.
https://bugzilla.gnome.org/show_bug.cgi?id=660635
Deprecate both g_thread_create functions and add
g_thread_new() and g_thread_new_full(). The new functions
expect a name for the thread.
Change GThreadPool, GMainContext and GDBus to create named threads.
https://bugzilla.gnome.org/show_bug.cgi?id=660635
Take out the half-private g_private_init() stuff and replace it with a
G_PRIVATE_INIT macro that allows specifying a GDestroyNotify.
Expose the GPrivate structure in a public header.
Add a g_private_replace() to (sort of) match the functionality of
g_static_mutex_set().
Improve the documentation.
Deprecate g_private_new().
To avoid iterating threads in g_static_private_free(), defer freeing
the per-thread data to thread exit. The one complication here is
that it is possible for the static private index to be reused while
'old' data is still around. To deal with that case, store the 'owner'
with each per-thread data node, and free old data in
g_static_private_get() if the owner doesn't match. The remaining
possibility that a private index could be reused by a GStaticPrivate
with the same address is sufficiently unlikely that we can probably
ignore it.
With this change, per-thread data is now truly private again,
and we can drop the lock for it as well.
https://bugzilla.gnome.org/show_bug.cgi?id=660635
This reverts commit c7f9cd17d446938aaf4126e0753302676f66fd22.
The old macros in gthread.h used this variable, so it must remain in
place to keep ABI compatibility.
Replace it with g_thread_create_with_stack_size() and a real function
implementation of g_thread_create().
Modify a testcase that was calling g_thread_create_full()
inappropriately (it was using the default values anyway).
This was ignored on Windows. On POSIX, where supported, it controlled
if we ended up with a proper system thread or a user-mode thread. Linux
did not support this.
Switch 'self' 'join' and 'create' from using the vtable to being called
via normal g_system_thread_* internal API (implemented in each of
gthread-{posix,win32}.c).
Again, we can put NULL in the vtable since these were never used from
gthread.h.
Thread priorities were already documented as not working on Solaris, and
they are meaningless on Linux unless the process separately requests
realtime scheduling (and even then, it appears only to work as root).
We can safely put a NULL into the vtable for set_priority since nothing
outside of gthread.c ever calls this (and that call is gone).
We remove the macros while at the same time switching all libglib users
from g_private_new() to g_private_init(). We deal with the strange
expectations of the libglib code that g_private_* should work before the
GPrivate has been initialised with a temporary shim.
Now that nothing inside of GLib is using g_cond_new(), we can implement
it using GSlice. Since the implementations for POSIX and Windows are
now the same, move it to gthread.c.
Now that nothing inside of GLib is using g_mutex_new, we can implement
it using GSlice. Since the implementations for POSIX and Windows are
now the same, move it to gthread.c.
Remove the explicit thread initialisation functions for g_get_charset(),
g_get_filename_charsets() and g_get_language_names().
Add a lock around one remaining case of access to libcharset (the other
2 cases already have the lock).
Do a proper g_once_init_enter() style initialisation for the GLib
gettext functions.
https://bugzilla.gnome.org/show_bug.cgi?id=658683
g_thread_gettime() is an undocumented public function pointer that
points to a function that returns the monotonic time in nanoseconds.
g_get_monotonic_time() does the same in microseconds, so it can be used
instead.
GLib had one internal user in GFileMonitor that only cared about
millisecond accuracy; it has been ported to g_get_monotonic_time().
G_THREADS_ENABLED still exists, but is always defined. It is still
possible to use libglib without threads, but gobject (and everything
above it) is now guaranteed to be using threads (as, in fact, it was
before, since it was accidentally impossible to compile with
--disable-threads).
https://bugzilla.gnome.org/show_bug.cgi?id=616754
When getting the mutex implementation of a static mutex, avoid taking the global
lock every time but only take the lock when there was no mutex and we need to
create one.
https://bugzilla.gnome.org/show_bug.cgi?id=599954
- remove all inline assembly versions
- implement the atomic operations using either GCC intrinsics, the
Windows interlocked API or a mutex-based fallback
- drop gatomic-gcc.c since these are now defined in the header file.
Adjust Makefile.am accordingly.
- expand the set of operations: support 'get', 'set', 'compare and
exchange', 'add', 'or', and 'xor' for both integers and pointers
- deprecate g_atomic_int_exchange_and_add since g_atomic_int_add (as
with all the new arithmetic operations) now returns the prior value
- unify the use of macros: all functions are now wrapped in macros that
perform the proper casts and checks
- remove G_GNUC_MAY_ALIAS use; it was never required for the integer
operations (since casting between pointers that only vary in
signedness of the target is explicitly permitted) and we avoid the
need for the pointer operations by using simple 'void *' instead of
'gpointer *' (which caused the 'type-punned pointer' warning)
- provide function implementations of g_atomic_int_inc and
g_atomic_int_dec_and_test: these were strictly macros before
- improve the documentation to make it very clear exactly which types
of pointers these operations may be used with
- remove a few uses of the now-deprecated g_atomic_int_exchange_and_add
- drop initialisation of gatomic from gthread (by using a GStaticMutex
instead of a GMutex)
- update glib.symbols and documentation sections files
Closes#650823 and #650935
* g_static_private_get: have a single entry and exit
* g_static_private_set: delay creation of GArray so the whole tail of
the function can be under the private_data lock without risking
deadlock with the g_thread lock; call the destructor last, after
we could have unlocked
* g_static_private_free: choose next thread in list before accessing
private_data, to keep all accesses together
* g_thread_cleanup: steal private_data first, then work exclusively with
the stolen array (which doesn't need to be under a lock any more)
Bug: https://bugzilla.gnome.org/show_bug.cgi?id=642026
Bug-NB: NB#257512
Add support for a mutex lock that consumes only one bit of storage
inside of an integer on systems that support futexes. Futex is emulated
(at a higher cost) on systems that don't have it -- but only in the
contended case.
GLib users buildable with gcc 4.4. Patch by Jakub Jelinek.
* glib/gatomic.[hc]: Add G_GNUC_MAY_ALIAS to pointer arguments,
fix macro versions to only operate on objects of the same size.
* glib/gdataset.c:
* glib/gthread.[hc]:
* glib/gdatasetprivate.h: Remove unnecessary casts in
g_atomic_pointer_get calls.
svn path=/trunk/; revision=7875
Tue Aug 14 02:06:10 2007 Tim Janik <timj@imendio.com>
* glib/gthread.c (g_once_init_enter_impl): prevent race covered
by g_once_init_enter(), by checking for previous initializations
before entering initialisation branch.
* tests/onceinit.c: added multi-thread/multi-initializer stress test
using unoptimized g_once_init_enter_impl().
svn path=/trunk/; revision=5701
