Commit Graph

41 Commits

Author SHA1 Message Date
Sebastian Wilhelmi
7e3c98f8e9 Changed the scope of the initialized mutex to USYNC_THREAD. Thanks to
2000-04-25  Sebastian Wilhelmi  <wilhelmi@ira.uka.de>

	* gthread-solaris.c (g_mutex_new_solaris_impl): Changed the scope
	of the initialized mutex to USYNC_THREAD. Thanks to Soeren
	Sandmann <sandmann@daimi.au.dk> for pointing that out.
2000-04-25 13:44:43 +00:00
Sebastian Wilhelmi
d3cdac0cdb .cvsignore adaptation
.cvsignore adaptation
2000-03-24 15:09:02 +00:00
Sebastian Wilhelmi
7cd50026f1 Added various win32 related *.in files to EXTRA_DIST to let 'make
2000-03-24  Sebastian Wilhelmi  <wilhelmi@ira.uka.de>

	* Makefile.am, gthread/Makefile.am, gmodule/Makefile.am,
	tests/Makefile.am: Added various win32 related *.in files to
	EXTRA_DIST to let 'make distcheck' procude all the corresponding
	files, which it silently fails to do currently.
2000-03-24 12:56:56 +00:00
Sebastian Wilhelmi
68c4ed996f Forgot a '}' in a macro for DCE-threads. Thanks to Karl Nelson
2000-03-20  Sebastian Wilhelmi  <wilhelmi@ira.uka.de>

	* gthread-posix.c (posix_check_for_error): Forgot a '}' in a macro
	for DCE-threads. Thanks to Karl Nelson <kenelson@ece.ucdavis.edu>
	for pointing that out.
2000-03-20 16:43:28 +00:00
Sebastian Wilhelmi
5e7134375e Added the missing POSIX_NO_YIELD and POSIX_NO_PRIORITIES warning messages.
2000-03-17  Sebastian Wilhelmi  <wilhelmi@ira.uka.de>

	* configure.in: Added the missing POSIX_NO_YIELD and
	POSIX_NO_PRIORITIES warning messages.

	* configure.in: Use AC_TRY_RUN instead of AC_TRY_LINK, to test for
	real thread support. On solaris pthread_create can be linked to
	even in -lc, but it doesn't work then.

	* configure.in: Don't use priorities for threads, when the
	minimal/maximal priorities couldn't be determined at configure
	time.

	* configure.in, gthread.c: Always define GSystemThread in
	glibconfig.h to represent a system thread.

	* configure.in: Do not use native recursive threads, when
	possibe. We use some features, that they do not expose (namely the
	depth counter).

	* glib.h, gthread.c: Redefined GStaticRecMutex. The functions are
	now implemented in a different way, which should be way
	faster. Alsothere are now functions g_static_rec_mutex_unlock_full
	and g_static_rec_mutex_lock_full to leave/enter a recursive mutex
	completly.

	* gthread.c (g_thread_self): Do not test the system_thread to be
	non-zero to speed things up.

	* gthread.c (g_mutex_init): Therefore set the system_thread of the
	main thread here.

	* tests/thread-test.c: Rerun all tests once again, but this time
	we fool the system into thinking, that the available thread system
	is not native, but userprovided.

	* gthread/gthread-posix.c: Don't use priorities for threads,
	when the minimal/maximal priorities couldn't be determined at
	configure time.

	* gthread/gthread-posix.c: Don't check for errors, when
	setting the scope of a tread to system, as some posix
	implementations can't do that and we don't want the thing to
	fail because of that.
2000-03-17 14:49:59 +00:00
Sebastian Wilhelmi
ac6c1d7c59 check for sysconf (_SC_THREAD_STACK_MIN), which returns the minimal stack
2000-02-22  Sebastian Wilhelmi  <wilhelmi@ira.uka.de>

	* gthread-posix.c, gthread-solaris.c: check for sysconf
	(_SC_THREAD_STACK_MIN), which returns the minimal stack size for
	new threads. Patch from Soeren Sandmann <sandmann@daimi.au.dk>.
2000-02-22 13:11:24 +00:00
Tor Lillqvist
726b3de454 Move to corresponding subdirectories.
2000-02-07  Tor Lillqvist  <tml@iki.fi>

* gmodule.rc.in gthread.rc.in: Move to corresponding subdirectories.

* Makefile.am
* gmodule/Makefile.am
* gthread/Makefile.am: Change accordingly.

* makefile.cygwin: Corresponding changes, some cleanup.
2000-02-07 21:22:30 +00:00
Sebastian Wilhelmi
f0f028abd2 Changed the prototype of thread_create and thread_self to return the
1999-11-16  Sebastian Wilhelmi  <wilhelmi@ira.uka.de>

        * gthread-posix.c, gthread-solaris.c: Changed the prototype of
        thread_create and thread_self to return the system thread into
        provided memory instead of a return value. This is necessary, as
        HPUX has a pthread_t, that is bigger than the biggest integral
        type there. Made some more functions static.

        * gthread-posix.c: Small fixes for DCE threads: Detaching has to
        be done after thread creation for DCE.
1999-11-16 10:29:27 +00:00
Manish Singh
7ea73a0199 G_OS_FOO #defines. I *think* I got the cygwin and beos stuff right, but
I haven't tested it. The respective porters should fix any screwups

-Yosh
1999-10-04 02:32:50 +00:00
Tim Janik
ebeb32f252 added --export-dynamic so we can load dynmic modules, (required, according
Thu Aug 26 15:09:36 1999  Tim Janik  <timj@gtk.org>

        * Makefile.am:
        * gmodule/Makefile.am:
        * gthread/Makefile.am: added --export-dynamic so we can load dynmic
        modules, (required, according to the libtool 1.3.3 docu).
1999-08-26 13:09:50 +00:00
Tim Janik
87c7aeb93b 18:36. incorporated proposed cleanups from gtk-devel-list.
Sat Jul 24 20:11:35 1999  Tim Janik  <timj@gtk.org>

        * merged GLib 1.3.0 with glib-1.2.3 from Fri Jul 16 22:18:36.
        * incorporated proposed cleanups from gtk-devel-list.

        * bumped version number to GLib-1.3.1

        * glib.h:
        * gqueue.c:
        * gstring.c:
        * glist.c:
        removed string tokenisation (we got g_strsplit() and g_strjoin()
        already) and readline functions.
        s/g_list_delete/g_list_delete_link.
        implemented g_slist_delete_link.
        removed notion of g_ATEXIT() macro in glib.h, this is an *internal*
        macro, g_atexit() is provided for public consumption.
        added GTrashStack inline utility functions.
        reimplement double eneded queues.
        removed GStack implementation, people can use a queue or a (singly)
        linked list for this task.
        deprecated g_strescape(), we need the SunOS variants here.

        * gdate.c: added DEBUG_MSG() macro to wrap old messages.

        * *.*: CVS merges.

        * upgrade to libtool 1.3.3.
1999-07-24 18:50:58 +00:00
Tor Lillqvist
be80f9a106 Update the pthreads snapshot version we want. Advice how to hand-expand
* README.win32: Update the pthreads snapshot version we want.
	Advice how to hand-expand the makefile.*.in files.

	* config.h.win32.in: Define values needed by Sebastian Wilhelmi's
	new thread stuff.

	* glib.def: Add new functions.

	* glibconfig.h.win32.in: Update the pthreads snapshot version.
	Fix typo.

	* gthread.c: Include config.h, guard inclusion of unistd.h.  When
 	using gcc on Win32, g_thread_functions_for_glib_use must be marked
 	for export here, too.

	* gtimer.c: Implement g_usleep on native Win32 using Sleep (which
	only has millisecond granularity, though).

	* makefile.cygwin.in
	* makefile.msc.in: Update pthreads snapshot version. File
	name changes. Remove testgthread.

	* tests/makefile.cygwin.in
	* tests/makefile.msc.in: Add thread-test. Link with gthread lib.

	* gthread-posix.c: Guard pthread_attr_setscope call with test
	for _POSIX_THREAD_PRIORITY_SCHEDULING, which should be defined
	in a <pthread.h> that supports that feature.
1999-06-20 22:20:43 +00:00
Sebastian Wilhelmi
90f6cc9bf2 Completed the thread support in GLib. Thread creation, prioritizing
1999-06-17  Sebastian Wilhelmi  <wilhelmi@ira.uka.de>

	* configure.in, acglib.m4, acconfig.h, glib.h, gthread.c:
	Completed the thread support in GLib. Thread creation,
	prioritizing threads, yielding, joining threads as well as
	reader/writer locks and recursive mutexes are now in place. Please
	test heavily on your platform. It is so far tested on
	Linux/i386/pthreads, Solaris/Sparc/pthreads and
	Solaris/Sparc/solaristhreads.

	* gtimer.c, glib.h: Implement g_usleep (gulong microseconds) for
	thread safe sleeping. (sleep() is not MT-safe at all!)

	* gutils.c: Avoid compiler warning.

	* tests/Makefile.am, tests/thread-test.c: New program to test some
	aspects of the thread implementation.

	* gthread.c, Makefile.am: Renamed from gmutex.c to reflect the
	change of content.

	* configure.in: Purged all appearances of nspr.

	* gthread/gthread-posix.c, gthread-solaris.c: Added the native
	implementations for the GLib's extended thread support.

	* gthread/gthread-nspr.c: Removed for good. NSPR is nothing we
	would want to build upon.

	* gthread/gthread.c: Renamed to gthread-impl.c to avoid
	confusion with ../gthread.c (Formerly known as the file called
	gmutex.c)

	* gthread/testgthread.c: Removed. The new and much extended
        tests are in ../tests/thread-test.c.

	* gthread/Makefile.am: Changed to reflect the changes above.
1999-06-17 15:39:31 +00:00
CDT 1999 Shawn T. Amundson
0e7f2f16f7 Better testing reveals better methods. Fixes for BeOS.
Sat May  8 06:00:17 CDT 1999 Shawn T. Amundson <amundson@gtk.org>

        * configure.in
          gmodule/Makefile.am
          gthread/Makefile.am: Better testing reveals better
          methods.  Fixes for BeOS.
1999-05-08 11:04:26 +00:00
CDT 1999 Shawn T. Amundson
499c9786d1 Port to BeOS by myself and Richard Offer.
Sat May  8 01:52:29 CDT 1999 Shawn T. Amundson <amundson@gtk.org>

        * configure.in
          gerror.c
          gmain.c
          gstrfuncs.c
          gutils.c
          ltconfig
          ltmain.sh
          gmodule/Makefile.am
          gmodule/gmodule.c
          gmodule/gmoduleconf.h.in
          gmodule/gmodule-beos.c
          gthread/Makefile.am: Port to BeOS by myself and Richard Offer.
1999-05-08 07:40:44 +00:00
Tor Lillqvist
2aa1277d60 Support added for building using a GNU toolchain on Win32,
i.e. gcc -mno-cygwin on cygwin (a.k.a. mingw32, using egcs-1.1.2).

	* README.win32: Updated.
	* build-dll makefile.cygwin tests/makefile.cygwin: New files.
	* glib.h glib.def glibconfig.h.win32 makefile.msc: Slight updates.
	* gmain.c: No need to include <fcntl.h> and <io.h> on Win32.
	* gmain.c gutils.c testglib.c tests/string-test.c: Test for
	NATIVE_WIN32, not _MSC_VER.
	* gmutex.c: Must declare g_thread_functions_for_glib_use as
	exported (using the GUTILS_C_VAR macro).
	* gutils.c gmodule/libgplugin_[ab].c: LibMain not needed.
	* gmodule/gmoduleconf.h.win32: Need underscore with gcc.
	* gthread/gthread.c: With gcc on Win32, must use memcpy to assign
	value of g_thread_functions_for_glib_use (?).
	* makefile.msc tests/makefile.msc: Cosmetics.
1999-04-24 13:52:51 +00:00
Sebastian Wilhelmi
95aff22dff New files to implement the Mersenne Twister Pseudo Random Number
1999-04-09  Sebastian Wilhelmi  <wilhelmi@ira.uka.de>

	* grand.c, tests/rand-test.c: New files to implement the Mersenne
	Twister Pseudo Random Number Generator.

	* glib.h, AUTHORS, Makefile.am, tests/Makefile.am: Changed
	accordingly.
1999-04-09 14:40:58 +00:00
Sebastian Wilhelmi
8b63644aab Use the right default arguments for the construction of mutexes and conds
1999-03-31  Sebastian Wilhelmi  <wilhelmi@ira.uka.de>

	* gthread/gthread-posix.c: Use the right default arguments for the
	construction of mutexes and conds for dce threads, these are
	&pthread_(cond|mutex)attr_default instead of NULL. Hint from
	D. Emilio Grimaldo Tunon <emilio_tunon@nl.compuware.com>.
1999-03-31 09:28:59 +00:00
Sebastian Wilhelmi
3e95674232 added new AC_SUBST(GTHREAD_COMPILE_IMPL_DEFINES) to hold various defines
1999-03-18  Sebastian Wilhelmi  <wilhelmi@ira.uka.de>

	* configure.in: added new AC_SUBST(GTHREAD_COMPILE_IMPL_DEFINES)
	to hold various defines to get the right thread implementation on
	different platforms. Also look in -ldce for pthread_create. Should
	make it work on HP-UX 10.x.

	* gthread/Makefile.am (INCLUDES): Added @GTHREAD_COMPILE_IMPL_DEFINES@.
1999-03-18 14:41:38 +00:00
Sebastian Wilhelmi
cc7f889607 Test for posix threads first, then for dce threads.
1999-03-12  Sebastian Wilhelmi  <wilhelmi@ira.uka.de>

       * configure.in: Test for posix threads first, then for dce threads.

       * gthread/gthread-posix.c (g_private_get_posix_impl): Fixed
       typo for DCE implementation.
1999-03-12 15:28:36 +00:00
Sebastian Wilhelmi
4c63008b6c Revamped the thread configure stuff. Now dce threads (old posix draft) are
1999-03-11  Sebastian Wilhelmi  <wilhelmi@ira.uka.de>

	* configure.in: Revamped the thread configure stuff. Now dce
	threads (old posix draft) are recogniced. This is necessary,
	because dce threads are in fact working quite differently from
	posix threads. Also changed the conditions for checking for MT
	safe functions a bit, because G_THREADS_IMPL_NONE still have to
	compile thread safe.

	* gthread/gthread-posix.c: Now handle both dce and posix
	threads. They are sufficently equal.

NOTE: Please do not commit my change to
glib-1-2/{acconfig.h,configure.in,config.h.win32} from 1999-03-03, as
the current change will take care of that too.
1999-03-11 17:38:51 +00:00
CST 1999 Shawn T. Amundson
b9ef2b41db inserted additional note to look for ChangeLog and AUTHORS file for a log
Wed Feb 24 00:08:42 CST 1999 Shawn T. Amundson <amundson@gtk.org>

        * *.[ch]: inserted additional note to look for ChangeLog and
	  AUTHORS file for a log of modifications.
1999-02-24 06:14:27 +00:00
Sebastian Wilhelmi
8168836cd2 Changed signature of all g_static_mutex_* functions to take a pointer
1999-02-15  Sebastian Wilhelmi  <wilhelmi@ira.uka.de>

	* glib.h, glibconfig.h.win32, configure.in: Changed signature of
	all g_static_mutex_* functions to take a pointer rather than the
	struct itself. This is not an issue at the moment, because those
	funcs are really macros, but is it un'G'ish and might fall on our
	feet in the future.

	* gthread/testgthread.c (test_mutexes): Use new signature of
	g_static_mutex* functions.
1999-02-15 08:26:00 +00:00
Sebastian Wilhelmi
b37e032581 s/G_LOCK_DECLARE/G_LOCK_DEFINE/ throuhout glib. Added G_LOCK_EXTERN macro
1999-02-10  Sebastian Wilhelmi  <wilhelmi@ira.uka.de>

	* glib.h: s/G_LOCK_DECLARE/G_LOCK_DEFINE/ throuhout glib. Added
	G_LOCK_EXTERN macro to declare a lock externally.
1999-02-10 09:40:46 +00:00
Sebastian Wilhelmi
fa5d3b74b0 Changed the test for getpwuid_r to exclude those systems (i.e. IRIX), that
1999-02-08  Sebastian Wilhelmi  <wilhelmi@ira.uka.de>

	* configure.in, acconfig.h: Changed the test for getpwuid_r to
	exclude those systems (i.e. IRIX), that set ENOSYS after the call.
	Test, if pthread_getspecific is posix like or something different,
	as on PCThreads.

	* gthread/gthread-posix.c (g_private_get_posix_impl): Use the
	HAVE_PTHREAD_GETSPECIFIC_POSIX macro to determine, which signature
	to use for pthread_getspecific.
1999-02-08 17:14:44 +00:00
Tor Lillqvist
32dbc0d51c More Win32 updates. Add missing Win32 files to distributed files.
Remove the obsolete makefile.lcc.
1999-01-19 21:13:59 +00:00
Tor Lillqvist
04d3d1b219 Oops, ChangeLog entries too, of course. 1999-01-17 11:20:31 +00:00
Tor Lillqvist
3e9ad980bb Added missing gthread/gthread.def file. Incremented version numbers
in the *.h.win32 files.
1999-01-17 11:11:39 +00:00
Tor Lillqvist
f477518c3a Merge in current Win32 version. Almost no Unix code touched.
* README.win32: More text.

	* config.h.win32 glibconfig.h.win32: Update to match the
	corresponding generated files on Unix.

	* makefile.msc: Update with new source files, and gthread
 	library. Use the compiler flag -MD instead of using -D_DLL and
	"/nodefaultlib:libc msvcrt.lib" in the link phase.

	* glib.def: Include new functions, drop removed ones.

	* glib.h: Add comments about main loop and polling on Win32. (In
	general, it's only for the GIMP's use.) Add Win32 IO Channel
	functions. Remove the obsoleted old IO Channel stuff (which was
	in #if 0 already).

	* giowin32.c: New file.

	* gmain.c: Include config.h, conditionalize <sys/time.h>
 	inclusion.  Add g_poll implementation for Win32 (only for the
 	GIMP's needs for now, it's hard or even impossible to be as clean
 	and generic as on Unix). Implement g_get_current_time on Win32. If
 	threads aren't supported, don't try to wake up main thread's
 	loop. On Win32, use a semaphore and not a pipe to wake up the main
 	loop.

	* gmessages.c: On Win32, allocate a console window if the standard
	output handle is invalid before writing to stdout, and reopen stdout
	to that console window.

	* giochannel.c: Conditionalize unistd.h inclusion. Some indentation
	cleanup.

	* gstrfuncs.c: Include <signal.h>.

	* gutils.c: On Win32, also check the HOMEDRIVE and HOMEPATH
	environment variables.

	* gmodule-dl.c gmodule-dld.c: In
 	_g_module_build_path, don't add the "lib" prefix and
 	".so" or ".sl" suffix if already there.

	* gmodule-win32.c: Likewise for the ".dll" suffix.

	* gthread-posix.c: Conditionalize <sys/time.h> inclusion.
1999-01-16 23:46:42 +00:00
Chris Toshok
f4a2520f38 add support for freebsd (-lc_r for thread foo) and make sure testgthread.c compiles on platforms with rand_r. 1999-01-11 10:05:33 +00:00
Sebastian Wilhelmi
81f8d0bb10 Here we must replace getpwuid by getpwuid_r, but as I do not know how for
1999-01-07  Sebastian Wilhelmi  <wilhelmi@ira.uka.de>

	* gutils.c (g_get_any_init): Here we must replace getpwuid by
	getpwuid_r, but as I do not know how for now, I just made a FIXME
	note ;-)

	* gdate.c (g_date_set_time): localtime --> localtime_r to make it
	thread safe.

	* configure.in: We do not need to check for broken solaris mutex
	intitializer any longer. Provide a macro to show the used thread
	implementation. Not nice, but this is needed until thread support
	is completed here inside glib.

	* gthread/testgthread.c: conditionally compile according to the
	G_THREADS_IMPL_??? macros.
	(test_private_func): use rand_r instead of rand to make it
	thread safe.
1999-01-07 16:17:42 +00:00
Manish Singh
228a8ffd85 ditch whitespace before GLIB_SYSDEFS #includes, the # needs to be in
* configure.in: ditch whitespace before GLIB_SYSDEFS #includes,
the # needs to be in column 1

* gthread/testgthread.c: cleanups

* tests/node-test.c: #include unistd.h for exit()

-Yosh
1999-01-05 20:29:49 +00:00
Manish Singh
6476df5865 Shut up cvs
-Yosh
1999-01-05 20:28:45 +00:00
Sebastian Wilhelmi
ab4b645486 Changed the last pthread_cond_init to pthread_attr_init.
1998-12-18  Sebastian Wilhelmi  <wilhelmi@ira.uka.de>

	* configure.in (have_threads): Changed the last pthread_cond_init
	to pthread_attr_init.

1998-12-18  Sebastian Wilhelmi  <wilhelmi@ira.uka.de>

	* testgthread.c (new_thread): As a joinable thread seems to be the
	default on posix, leave the explicit setting out, as it causes
	problems on some older platforms.
1998-12-18 09:20:52 +00:00
CST 1998 Shawn T. Amundson
77ccad4d2f giounix.c: s/g_main_poll_add/g_main_remove_add/g
Wed Dec 16 22:32:13 CST 1998 Shawn T. Amundson <amundson@gtk.org>

        * glib.h:
          giounix.c: s/g_main_poll_add/g_main_remove_add/g
                     s/g_main_poll_remove/g_main_remove_poll/g
                     s/g_main_poll_add_unlocking/g_main_add_unlocking_poll/g
          (from Tim Janik)

        * gthread-posix.c: use g_free in mutex_free (from Tim Janik)
1998-12-17 04:36:04 +00:00
Tim Janik
2f1f82f60f -DG_LOG_DOMAIN="GThread", we don't need an extern variable for that
Thu Dec 17 03:38:57 1998  Tim Janik  <timj@gtk.org>

        * Makefile.am: -DG_LOG_DOMAIN="GThread", we don't need an extern
        variable for that (noticed by Joel Becker <jlbec@ocala.cs.miami.edu>)
1998-12-17 02:42:57 +00:00
Tim Janik
b2e318ff3e version bump to 1.1.8, binary age 0, interface age 0.
Wed Dec 16 03:16:58 1998  Tim Janik  <timj@gtk.org>

        * configure.in: version bump to 1.1.8, binary age 0, interface age 0.

        * glib.h: changed g_lock() to G_LOCK(), g_unlock() to G_UNLOCK() and
        g_trylock() to G_TRYLOCK(), since these are macros that expand to
        nothing with --disable-threads.
        changed G_LOCK_DEFINE() to G_LOCK_DECLARE() and introduced
        G_LOCK_DECLARE_STATIC() to achive the results of static G_LOCK_DECLARE().
        changed semantics of g_thread_supported to g_thread_supported() so it
        can be used as a function like g_module_supported(). the actuall
        definition is still a macro that expands into a variable for
        performance reasons though.
        various indentation and coding style cleanups.

        * configure.in: added --enable-threads that defaults to yes.

        * gmutex.c: changed tests g_thread_supported to g_thread_supported (),
        changed variable settings of g_thread_supported
        to g_threads_got_initialized.

        garray.c:
        gcache.c:
        gdataset.c:
        gdate.c:
        ghash.c:
        glist.c:
        gmain.c:
        gnode.c:
        gslist.c:
        gstring.c:
        gtree.c:
        gutils.c:
        changed s/g_lock/G_LOCK/, s/g_unlock/G_UNLOCK/,
        s/static G_LOCK_DEFINE/G_LOCK_DECLARE_STATIC/.
1998-12-16 05:38:35 +00:00
Sebastian Wilhelmi
2c30e8620f updated.
1998-12-15  Sebastian Wilhelmi  <wilhelmi@ira.uka.de>

	* Makefile.am (EXTRA_DIST): updated.

	* testgthread.c, gthread-*.c: Changed private to private_key to
	avoid problems when compiling with under C++.
1998-12-15 17:49:30 +00:00
Sebastian Wilhelmi
fc29b682e3 s/g_mutex_functions_for_glib_use/g_thread_functions_for_glib_use/
1998-12-15  Sebastian Wilhelmi  <wilhelmi@ira.uka.de>

	* gthread-none.c:
	s/g_mutex_functions_for_glib_use/g_thread_functions_for_glib_use/

	* ChangeLog: from now on there is an extra ChangeLog for gthread
1998-12-15 16:47:31 +00:00
Jeff Garzik
5c31783df2 Fixed --with-threads, small 64-bit prob 1998-12-15 15:47:13 +00:00
Owen Taylor
931ea95265 This commit merges the glib-threads branch into the main
branch. See the ChangeLog for details of the changes.

In brief overview:

 - The set of threading functions can be set
 - A default implementation is provided in -lgthread
 - All static data structures are locked using these
   functions if g_thread_init() is called.
1998-12-15 05:28:02 +00:00