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
Mon Aug 13 14:18:22 2007 Tim Janik <timj@imendio.com>
* glib/gthread.c (g_thread_create_full): prevent linking a freed
GThread structure into global thread list in error cases.
svn path=/trunk/; revision=5697
Fri Jul 13 01:01:46 2007 Tim Janik <timj@imendio.com>
* glib/gthread.[hc]: more atomic ops pointer cast fixes. this time it'll
work with atomic op macros *and* atomic op functions.
svn path=/trunk/; revision=5638
Tue Jul 10 12:24:35 2007 Tim Janik <timj@imendio.com>
* glib/gthread.[hc]: implemented g_once_init_enter(),
g_once_init_enter_impl() and g_once_init_leave(), based on a patch by
Antoine Tremblay, fixes#65041.
adapted exported inline function mechanism from gutils.[hc] for inlining
g_once_init_enter_impl() in gthread.[hc].
svn path=/trunk/; revision=5616
2007-06-15 Sebastian Wilhelmi <wilhelmi@google.com>
* docs/reference/glib/tmpl/threads.sgml: Extended the comments on
those functions, that are NOOPs, before g_thread_init() has been
called. (#447583)
* glib/gthread.c (g_static_mutex_free): Clarified comment to
remind myself, tha calling g_static_mutex_free() before
g_thread_init() is safe.
svn path=/trunk/; revision=5567
2007-01-16 Matthias Clasen <mclasen@redhat.com>
* glib/gthread.h:
* glib/gthread.c:
* glib/glib.symbols: Revert an accidental ABI break by
moving gettime out of the GThreadFunctions struct and making
it a separate variable. (#397139, Joe Marcus Clarke)
* gthread/*.c: Adapt.
svn path=/trunk/; revision=5279
2007-01-16 Tor Lillqvist <tml@novell.com>
* glib/gthread.c (gettime)
* gthread-win32.c (g_gettime_win32_impl):
GetSystemTimeAsFileTime() returns 100s of nanoseconds since 1601,
so offset to Unix epoch (1970) and multiply by 100 to get
nanoseconds which is what we want.
svn path=/trunk/; revision=5277
2007-01-16 Tor Lillqvist <tml@novell.com>
* glib/gthread.c (gettime)
* gthread-win32.c (g_gettime_win32_impl):
GetSystemTimeAsFileTime() returns 100s of nanoseconds, so multiply
by 100 to get nanoseconds which is what we want.
svn path=/trunk/; revision=5276
2005-01-15 Matthias Clasen <mclasen@redhat.com>
* glib/gthread.c:
* gthread/gthread-posix.c: Correct the gettime calculations
once more. (#395203, Chris Wilson)
svn path=/trunk/; revision=5262
2007-01-12 Matthias Clasen <mclasen@redhat.com>
* gthread/gthread-posix.c:
* glib/gtimer.c:
* glib/gthread.c: Fix errors in the recently moved
time calculations. (#395203, Chris Wilson)
svn path=/trunk/; revision=5244
2007-01-07 Matthias Clasen <mclasen@redhat.com>
Don't link glib against libpthread. (#393812)
* configure.in: Link gthread against librt, not glib itself.
* glib/gthread.h:
* glib/gthread.c: Add a new thread function, gettime.
* glib/gtimer.c: Use gettime instead of directly working with
the various system interfaces.
* gthread/gthread-impl.c:
* gthread/gthread-posix.c:
* gthread/gthread-win32.c: Implement gettime.
svn path=/trunk/; revision=5227
2006-05-22 Sebastian Wilhelmi <wilhelmi@google.com>
* glib/gthread.c (g_thread_init_glib): Run _g_atomic_thread_init
as the first of the full fledged initializers to allow the later
to potentially use atomic ints (which they currently do
not). (#342563, Peter Kjellerstedt)
2006-05-10 Sebastian Wilhelmi <wilhelmi@google.com>
* glib/gthread.c: Use g_atomic_pointer_set instead of old
homegrown version now that we have it. (#335198, Chris Wilson)
2006-05-09 Sebastian Wilhelmi <wilhelmi@google.com>
* glib/gthreadinit.h: Renamed to glib/gthreadprivate.h and moved
system thread identifier comparision and assignment macros from
glib/gthread.c to glib/gthreadprivate.h.
* glib/Makefile.am, glib/gatomic.c, glib/gconvert.c, glib/gmain.c,
glib/gmem.c, glib/gmessages.c, glib/grand.c, glib/gslice.c,
glib/gthread.c, glib/gutils.c, gthread/gthread-impl.c: Use
glib/gthreadprivate.h instead of glib/gthreadinit.h.
* gthread/gthread-impl.c: Use GSystemThread instead of GThread for
owner determination. This fixes#311043 and is mostly modeled
after the patch from jylefort@FreeBSD.org.
Thu Dec 1 17:32:46 2005 Tim Janik <timj@imendio.com>
* glib/gslice.[hc]: new slice allocator implementation.
* tests/slice-test.c: added random slice allocation test.
* glib/gthread.[hc]: removed newly added private thread mem API.
* glib/gthreadinit.h:
* glib/gmessages.c:
* glib/gthread.c:
* glib/gmem.c: divided glib threading initialisation into three phases,
initialisation where private keys and messaging are not available (only
needed by gmem.c), initialisation without messaging but private keys
available (gslice.c, gmessage.c), and full fledged initialisers that
server the rest of glib. initialisation functions got renamed to reflect
the limitations of their corresponding phases.
* glib/gmem.c: removed memchunk code, defer allocations to
g_slice_* instead.
* glib/gmem.[hc]: removed g_slice_* skeletons.
* glib/glib.symbols: added g_slice_* symbols.
* configure.in: check for availability of posix_memalign(3), memalign(3)
and valloc(3).
* glib/Makefile.am: added gslice.[hc].
