bpt/guile.git
19 years agoFor 1.7.2.
Marius Vollmer [Wed, 9 Mar 2005 22:15:57 +0000 (22:15 +0000)]
For 1.7.2.

19 years ago*** empty log message ***
Marius Vollmer [Wed, 9 Mar 2005 22:15:32 +0000 (22:15 +0000)]
*** empty log message ***

19 years ago(GUILE_MICRO_VERSION): Incremented to "2".
Marius Vollmer [Wed, 9 Mar 2005 22:14:46 +0000 (22:14 +0000)]
(GUILE_MICRO_VERSION): Incremented to "2".

19 years ago(scm_compile_shell_switches): Added 2005 to Copyright years.
Marius Vollmer [Wed, 9 Mar 2005 22:11:56 +0000 (22:11 +0000)]
(scm_compile_shell_switches): Added 2005 to Copyright years.

19 years agoCouple cleanups.
Marius Vollmer [Wed, 9 Mar 2005 22:09:11 +0000 (22:09 +0000)]
Couple cleanups.

19 years ago*** empty log message ***
Marius Vollmer [Wed, 9 Mar 2005 19:23:55 +0000 (19:23 +0000)]
*** empty log message ***

19 years ago(ensure_state_size, ensure_all_state_sizes, resize_all_states):
Marius Vollmer [Wed, 9 Mar 2005 19:20:49 +0000 (19:20 +0000)]
(ensure_state_size, ensure_all_state_sizes, resize_all_states):
Collapsed ensure_state_size and ensure_all_state_sizes into one
function named resize_all_states.  Allocate new vectors outside of
single threaded region.  Do only simple things inside that region.
(scm_make_fluid, scm_make_dynamic_state): Lock fluid_admin_mutex while
adding to the global lists.

19 years ago(scm_i_sweep_card): Do not increase/decrease scm_gc_running_p.
Marius Vollmer [Wed, 9 Mar 2005 19:17:19 +0000 (19:17 +0000)]
(scm_i_sweep_card): Do not increase/decrease scm_gc_running_p.
Sweeping can happen in parallel with allocation.

19 years agoUpdated comments for current threading implementation.
Marius Vollmer [Wed, 9 Mar 2005 19:14:36 +0000 (19:14 +0000)]
Updated comments for current threading implementation.

19 years ago(scm_i_frame_single_threaded): Removed.
Marius Vollmer [Wed, 9 Mar 2005 19:13:59 +0000 (19:13 +0000)]
(scm_i_frame_single_threaded): Removed.
(scm_i_thread): Removed unused signal_asyncs field.
(threads_mark): Do not mark it.
(guilify_self_1): Do not initialize it.  Do initialize
continuation_root field.
(do_thread_exit): Do not remove thread from all_threads list.
(on_thread_exit): Do it here, after leaving guile mode.
(sleep_level): Removed.
(scm_i_thread_put_to_sleep): Leave thread_admin_mutex locked when
returning.  Do not support recursive sleeps.
(scm_i_thread_wake_up): Expect thread_admin_mutex to be locked on
entry.  Do not support recursive sleeps.

19 years ago*** empty log message ***
Marius Vollmer [Tue, 8 Mar 2005 00:58:55 +0000 (00:58 +0000)]
*** empty log message ***

19 years ago* configure.in: Do not call AC_LIBLTDL_INSTALLABLE. Use
Marius Vollmer [Tue, 8 Mar 2005 00:54:46 +0000 (00:54 +0000)]
* configure.in: Do not call AC_LIBLTDL_INSTALLABLE.  Use
AC_CHECK_LIB instead. Do not subst LTDLINCL and LIBLTDL.  Do not
add "-DLIBLTDL_DLL_IMPORT" on MINGW32.

* Makefile.am (SUBDIRS): Removed libltdl.

* README: Talk about required external packages.

* autogen.sh: Do not call libtoolize.

19 years ago(INCLUDES): Removed @LTDLINCL@.
Marius Vollmer [Tue, 8 Mar 2005 00:53:21 +0000 (00:53 +0000)]
(INCLUDES): Removed @LTDLINCL@.
(libguile_la_LIBADD): Removed @LIBLTDL@.

19 years ago*** empty log message ***
Kevin Ryde [Mon, 7 Mar 2005 22:52:58 +0000 (22:52 +0000)]
*** empty log message ***

19 years ago(*features*): Remove 'random, need to use the slib code for
Kevin Ryde [Mon, 7 Mar 2005 22:52:01 +0000 (22:52 +0000)]
(*features*): Remove 'random, need to use the slib code for
that module since guile doesn't provide `random:chunk'.

19 years ago*** empty log message ***
Marius Vollmer [Mon, 7 Mar 2005 22:33:46 +0000 (22:33 +0000)]
*** empty log message ***

19 years agoInclude "libguile/async.h" for SCM_CRITICAL_SECTION_START/END.
Marius Vollmer [Mon, 7 Mar 2005 22:32:22 +0000 (22:32 +0000)]
Include "libguile/async.h" for SCM_CRITICAL_SECTION_START/END.

19 years agoMoved up section on mutexes and condition variables. Added critical
Marius Vollmer [Mon, 7 Mar 2005 21:49:43 +0000 (21:49 +0000)]
Moved up section on mutexes and condition variables.  Added critical
"Critical Sections" section.

19 years agoTalk about critical sections.
Marius Vollmer [Mon, 7 Mar 2005 21:48:18 +0000 (21:48 +0000)]
Talk about critical sections.

19 years agoInclude "libguile/async.h" for SCM_CRITICAL_SECTION_START/END.
Marius Vollmer [Mon, 7 Mar 2005 21:42:02 +0000 (21:42 +0000)]
Include "libguile/async.h" for SCM_CRITICAL_SECTION_START/END.

19 years ago* throw.c (scm_ithrow): Abort when scm_i_critical_section_level is
Marius Vollmer [Mon, 7 Mar 2005 21:40:19 +0000 (21:40 +0000)]
* throw.c (scm_ithrow): Abort when scm_i_critical_section_level is
not zero.

19 years ago* continuations.c (scm_make_continuation): No longer a critical
Marius Vollmer [Mon, 7 Mar 2005 21:39:56 +0000 (21:39 +0000)]
* continuations.c (scm_make_continuation): No longer a critical
section.
(scm_dynthrow):  Abort when scm_i_critical_section_level is
not zero.

19 years ago(scm_debug_options): Replace SCM_CRITICAL_SECTION_START/END with a
Marius Vollmer [Mon, 7 Mar 2005 21:33:18 +0000 (21:33 +0000)]
(scm_debug_options): Replace SCM_CRITICAL_SECTION_START/END with a
frame and scm_frame_critical_section.

19 years ago(scm_make_continuation): No longer a critical section.
Marius Vollmer [Mon, 7 Mar 2005 21:32:00 +0000 (21:32 +0000)]
(scm_make_continuation): No longer a critical section.

19 years ago* threads.h, async.h, threads.c (SCM_CRITICAL_SECTION_START,
Marius Vollmer [Mon, 7 Mar 2005 21:30:24 +0000 (21:30 +0000)]
* threads.h, async.h, threads.c (SCM_CRITICAL_SECTION_START,
SCM_CRITICAL_SECTION_END): Moved here from threads.h since now
they also block/unblock execution of asyncs and call
scm_async_click which is declared in async.h but threads.h can not
include async.h since async.h already includes threads.h.
(scm_i_critical_section_level): New, for checking mistakes in the
use of the SCM_CRITICAL_SECTION_* macros.
(scm_i_critical_section_mutex): Make it a recursive mutex so that
critical sections can be nested.

* threads.h, threads.c (scm_frame_lock_mutex): New.
(scm_frame_critical_section): Take mutex as argument.
(framed_critical_section_mutex): New, used as default for above.
(scm_init_threads): Initialize it.
(scm_threads_prehistory): Do not initialize thread_admin_mutex and
scm_i_critical_section_mutex; both are initialized statically.

19 years agoSynchronized docstrings.
Marius Vollmer [Fri, 4 Mar 2005 17:56:31 +0000 (17:56 +0000)]
Synchronized docstrings.

19 years ago*** empty log message ***
Marius Vollmer [Fri, 4 Mar 2005 17:56:04 +0000 (17:56 +0000)]
*** empty log message ***

19 years agoDocstring updates.
Marius Vollmer [Fri, 4 Mar 2005 17:55:49 +0000 (17:55 +0000)]
Docstring updates.

19 years ago(scm_try_mutex): Renamed argument for consistency.
Marius Vollmer [Fri, 4 Mar 2005 17:54:50 +0000 (17:54 +0000)]
(scm_try_mutex): Renamed argument for consistency.

19 years ago*** empty log message ***
Marius Vollmer [Fri, 4 Mar 2005 17:06:34 +0000 (17:06 +0000)]
*** empty log message ***

19 years ago(scm_call_with_dynamic_root): New docstring.
Marius Vollmer [Fri, 4 Mar 2005 17:06:19 +0000 (17:06 +0000)]
(scm_call_with_dynamic_root): New docstring.

19 years agoUpdates.
Marius Vollmer [Fri, 4 Mar 2005 16:57:17 +0000 (16:57 +0000)]
Updates.

19 years agoTalk about new init functions.
Marius Vollmer [Fri, 4 Mar 2005 16:05:01 +0000 (16:05 +0000)]
Talk about new init functions.

19 years agoUse smobs as an example for 'remembering'. Mention continuation barriers.
Marius Vollmer [Fri, 4 Mar 2005 16:04:22 +0000 (16:04 +0000)]
Use smobs as an example for 'remembering'.  Mention continuation barriers.

19 years agoReference "Blocking" for scm_leave_guile/scm_enter_guile.
Marius Vollmer [Fri, 4 Mar 2005 15:48:18 +0000 (15:48 +0000)]
Reference "Blocking" for scm_leave_guile/scm_enter_guile.

19 years agoBetter docs for leaving guile mode.
Marius Vollmer [Fri, 4 Mar 2005 15:47:48 +0000 (15:47 +0000)]
Better docs for leaving guile mode.

19 years agoUse ``...'' instead of "...". The latter doesn't seem to work for
Marius Vollmer [Fri, 4 Mar 2005 14:22:41 +0000 (14:22 +0000)]
Use ``...'' instead of "...".  The latter doesn't seem to work for
some reason.

19 years agoSpecify return type for scm_c_array_rank.
Marius Vollmer [Fri, 4 Mar 2005 14:21:01 +0000 (14:21 +0000)]
Specify return type for scm_c_array_rank.

19 years agoDefine _GNU_SOURCE.
Marius Vollmer [Fri, 4 Mar 2005 12:11:10 +0000 (12:11 +0000)]
Define _GNU_SOURCE.

19 years ago*** empty log message ***
Marius Vollmer [Wed, 2 Mar 2005 20:56:45 +0000 (20:56 +0000)]
*** empty log message ***

19 years agoUse scm_current_input_port instead of scm_cur_inp. Use scm_std_select
Marius Vollmer [Wed, 2 Mar 2005 20:56:34 +0000 (20:56 +0000)]
Use scm_current_input_port instead of scm_cur_inp.  Use scm_std_select
instead of scm_internal_select.

19 years agoOnly test when 'threads are provided.
Marius Vollmer [Wed, 2 Mar 2005 20:55:17 +0000 (20:55 +0000)]
Only test when 'threads are provided.

19 years agoAdditions.
Marius Vollmer [Wed, 2 Mar 2005 20:54:40 +0000 (20:54 +0000)]
Additions.

19 years agoDo not check for fast or recursive mutexes. Check
Marius Vollmer [Wed, 2 Mar 2005 20:53:19 +0000 (20:53 +0000)]
Do not check for fast or recursive mutexes.  Check
for pthread_attr_getstack.
(SCM_I_GSC_USE_COOP_THREADS): Dot not subst.
(pthread_mutexattr_settype): Do not check for it.

19 years agoUse scm_is_pair instead of SCM_CONSP; use scm_is_null instead of
Marius Vollmer [Wed, 2 Mar 2005 20:50:48 +0000 (20:50 +0000)]
Use scm_is_pair instead of SCM_CONSP; use scm_is_null instead of
SCM_NULLP.

19 years agoUpdates for the new thread stuff.
Marius Vollmer [Wed, 2 Mar 2005 20:46:41 +0000 (20:46 +0000)]
Updates for the new thread stuff.

19 years agoSee ChangeLog from 2005-03-02.
Marius Vollmer [Wed, 2 Mar 2005 20:42:01 +0000 (20:42 +0000)]
See ChangeLog from 2005-03-02.

19 years ago(scm_frame_current_module): New.
Marius Vollmer [Wed, 2 Mar 2005 20:14:59 +0000 (20:14 +0000)]
(scm_frame_current_module): New.

19 years ago(scm_primitive_load): Use scm_i_frame_current_load_port instead of
Marius Vollmer [Wed, 2 Mar 2005 20:13:53 +0000 (20:13 +0000)]
(scm_primitive_load): Use scm_i_frame_current_load_port instead of
scm_internal_dynamic_wind.

19 years agoRemoved obsolete comment.
Marius Vollmer [Wed, 2 Mar 2005 20:11:55 +0000 (20:11 +0000)]
Removed obsolete comment.

19 years ago(scm_hash_fn_create_handle_x, scm_hash_fn_remove_x): Use "!scm_is_eq"
Marius Vollmer [Wed, 2 Mar 2005 20:05:38 +0000 (20:05 +0000)]
(scm_hash_fn_create_handle_x, scm_hash_fn_remove_x): Use "!scm_is_eq"
instead of "!=".

19 years ago(SCM_I_GSC_USE_COOP_THREADS, SCM_USE_COOP_THREADS): Removed.
Marius Vollmer [Wed, 2 Mar 2005 19:58:26 +0000 (19:58 +0000)]
(SCM_I_GSC_USE_COOP_THREADS, SCM_USE_COOP_THREADS): Removed.

19 years ago(progargs_fluid): New.
Marius Vollmer [Wed, 2 Mar 2005 19:40:20 +0000 (19:40 +0000)]
(progargs_fluid): New.
(scm_program_arguments, scm_set_program_arguments): Use it instead
of scm_progargs.
(scm_init_feature): Allocate it.  Also, only add "threads" feature
when SCM_USE_PTHREAD_THREADS is true.

19 years agoComment on #endif
Marius Vollmer [Wed, 2 Mar 2005 18:50:45 +0000 (18:50 +0000)]
Comment on #endif

19 years ago* Makefile.am (modinclude_HEADER): Removed threads-plugin.h.
Marius Vollmer [Wed, 2 Mar 2005 16:41:01 +0000 (16:41 +0000)]
* Makefile.am (modinclude_HEADER): Removed threads-plugin.h.
(libguile_la_SOURCES): Added null-threads.c
(EXTRA_libguile_la_SOURCES): Removed pthread-threads.c and
threads-plugin.c.
* pthread-threads.c, threads-plugin.c, threads-plugin.h: Removed.

19 years ago*** empty log message ***
Kevin Ryde [Mon, 28 Feb 2005 23:01:48 +0000 (23:01 +0000)]
*** empty log message ***

19 years agoMore of:
Kevin Ryde [Mon, 28 Feb 2005 22:58:03 +0000 (22:58 +0000)]
More of:
(Shared Arrays): New section.

19 years ago(Shared Arrays): Rewrite make-shared-array for clarity, adding examples.
Kevin Ryde [Mon, 28 Feb 2005 22:57:10 +0000 (22:57 +0000)]
(Shared Arrays): Rewrite make-shared-array for clarity, adding examples.

19 years ago(Shared Arrays): New section.
Kevin Ryde [Mon, 28 Feb 2005 22:46:08 +0000 (22:46 +0000)]
(Shared Arrays): New section.

19 years ago*** empty log message ***
Kevin Ryde [Mon, 28 Feb 2005 22:36:26 +0000 (22:36 +0000)]
*** empty log message ***

19 years ago(Control Flow): Cross reference Tail Calls.
Kevin Ryde [Mon, 28 Feb 2005 22:35:51 +0000 (22:35 +0000)]
(Control Flow): Cross reference Tail Calls.

19 years ago*** empty log message ***
Marius Vollmer [Mon, 28 Feb 2005 02:46:46 +0000 (02:46 +0000)]
*** empty log message ***

19 years agoAdd '--verbose' option to autoreconf invocation. Thanks to Bruno
Marius Vollmer [Mon, 28 Feb 2005 02:46:30 +0000 (02:46 +0000)]
Add '--verbose' option to autoreconf invocation.  Thanks to Bruno
Haible.

19 years agodocs for scm_c_array_rank.
Marius Vollmer [Mon, 28 Feb 2005 02:45:10 +0000 (02:45 +0000)]
docs for scm_c_array_rank.

19 years agoRemoved references to text "below" that does not exist in this file.
Marius Vollmer [Mon, 28 Feb 2005 01:21:54 +0000 (01:21 +0000)]
Removed references to text "below" that does not exist in this file.

19 years agoMore of:
Kevin Ryde [Mon, 28 Feb 2005 00:33:40 +0000 (00:33 +0000)]
More of:
(SRFI-1 Fold and Map): Rewrite fold, pair-fold and reduce for clarity.

19 years ago*** empty log message ***
Marius Vollmer [Sun, 27 Feb 2005 23:52:04 +0000 (23:52 +0000)]
*** empty log message ***

19 years ago(scm_setsockopt): Handle IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP
Marius Vollmer [Sun, 27 Feb 2005 23:50:30 +0000 (23:50 +0000)]
(scm_setsockopt): Handle IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP
options.  Also, reorganized the code a bit for cleanliness.  Thanks to
Greg Troxel!

19 years agoBugfix: Include <libguile.h> outside of the extern "C"
Mikael Djurfeldt [Sun, 27 Feb 2005 00:04:56 +0000 (00:04 +0000)]
Bugfix: Include <libguile.h> outside of the extern "C"
block.

19 years agoIn format, note no parameters to ~( case conversion.
Kevin Ryde [Fri, 25 Feb 2005 23:09:33 +0000 (23:09 +0000)]
In format, note no parameters to ~( case conversion.

19 years ago*** empty log message ***
Marius Vollmer [Fri, 25 Feb 2005 22:36:07 +0000 (22:36 +0000)]
*** empty log message ***

19 years ago(scm_i_rehash): Remove elements from old bucket vector
Marius Vollmer [Fri, 25 Feb 2005 22:35:26 +0000 (22:35 +0000)]
(scm_i_rehash): Remove elements from old bucket vector
so that no two weak alist vectors share a spine.
(scm_hash_fn_create_handle_x): Deal with a possible rehashing
during GC before inserting the new alist cell.

19 years ago(scm_i_rehash): Remove elements from old bucket vector so that no two
Marius Vollmer [Fri, 25 Feb 2005 21:22:44 +0000 (21:22 +0000)]
(scm_i_rehash): Remove elements from old bucket vector so that no two
weak alist vectors share a spine.

19 years ago*** empty log message ***
Marius Vollmer [Wed, 23 Feb 2005 17:24:38 +0000 (17:24 +0000)]
*** empty log message ***

19 years ago* hashtab.c (scm_i_rehash): Cope with the case that a GC modifies
Marius Vollmer [Wed, 23 Feb 2005 17:24:19 +0000 (17:24 +0000)]
* hashtab.c (scm_i_rehash): Cope with the case that a GC modifies
the hashtable.
(scm_hash_fn_create_handle_x): Likewise.
* vectors.h (SCM_I_SET_WVECT_TYPE): New, for use in scm_i_rehash.

19 years ago*** empty log message ***
Kevin Ryde [Sun, 20 Feb 2005 22:56:16 +0000 (22:56 +0000)]
*** empty log message ***

19 years ago(string->number): Exercise polar form with invalid angle.
Kevin Ryde [Sun, 20 Feb 2005 22:55:53 +0000 (22:55 +0000)]
(string->number): Exercise polar form with invalid angle.

19 years ago*** empty log message ***
Kevin Ryde [Thu, 17 Feb 2005 21:25:25 +0000 (21:25 +0000)]
*** empty log message ***

19 years ago(Reals and Rationals): Use tex for sqrt2 and pi.
Kevin Ryde [Thu, 17 Feb 2005 21:18:31 +0000 (21:18 +0000)]
(Reals and Rationals): Use tex for sqrt2 and pi.
(Complex Numbers): Add polar form read syntax.

19 years ago(lset-adjoin): Amend tests to expect duplicates among args cast out.
Kevin Ryde [Thu, 17 Feb 2005 21:15:46 +0000 (21:15 +0000)]
(lset-adjoin): Amend tests to expect duplicates among args cast out.

19 years ago*** empty log message ***
Kevin Ryde [Thu, 17 Feb 2005 21:07:22 +0000 (21:07 +0000)]
*** empty log message ***

19 years ago*** empty log message ***
Kevin Ryde [Thu, 17 Feb 2005 20:51:00 +0000 (20:51 +0000)]
*** empty log message ***

19 years ago(lset-adjoin): Revert change using `list' not `acc', the
Kevin Ryde [Thu, 17 Feb 2005 20:35:11 +0000 (20:35 +0000)]
(lset-adjoin): Revert change using `list' not `acc', the
spec is not quite clear, but reference code uses acc, so do that.

19 years ago*** empty log message ***
Kevin Ryde [Mon, 14 Feb 2005 23:45:40 +0000 (23:45 +0000)]
*** empty log message ***

19 years ago(Tail Calls): New section.
Kevin Ryde [Mon, 14 Feb 2005 23:44:43 +0000 (23:44 +0000)]
(Tail Calls): New section.

19 years ago(File System): In tmpnam, clarify security and use of
Kevin Ryde [Mon, 14 Feb 2005 23:37:28 +0000 (23:37 +0000)]
(File System): In tmpnam, clarify security and use of
O_EXCL.  In mkstemp!, in fact posix doesn't specify permissions.

19 years agoAdd a copyright year.
Kevin Ryde [Mon, 14 Feb 2005 23:15:08 +0000 (23:15 +0000)]
Add a copyright year.

19 years agoIn scm_difference, amend comment about normbig.
Kevin Ryde [Mon, 14 Feb 2005 23:14:35 +0000 (23:14 +0000)]
In scm_difference, amend comment about normbig.

19 years ago*** empty log message ***
Rob Browning [Sat, 12 Feb 2005 06:15:51 +0000 (06:15 +0000)]
*** empty log message ***

19 years ago(check_SCRIPTS): add test-require-extension.
Rob Browning [Sat, 12 Feb 2005 06:15:25 +0000 (06:15 +0000)]
(check_SCRIPTS): add test-require-extension.
(TESTS): add test-require-extension.

19 years ago* standalone/test-require-extension: new test script.
Rob Browning [Sat, 12 Feb 2005 06:15:07 +0000 (06:15 +0000)]
* standalone/test-require-extension: new test script.

19 years ago(%cond-expand-features): add srfi-55.
Rob Browning [Sat, 12 Feb 2005 06:12:21 +0000 (06:12 +0000)]
(%cond-expand-features): add srfi-55.
(require-extension): add require-extension macro for srfi-55.

19 years ago*** empty log message ***
Kevin Ryde [Fri, 11 Feb 2005 22:04:13 +0000 (22:04 +0000)]
*** empty log message ***

19 years ago(SRFI-1 Fold and Map): Rewrite fold, pair-fold and
Kevin Ryde [Fri, 11 Feb 2005 22:03:48 +0000 (22:03 +0000)]
(SRFI-1 Fold and Map): Rewrite fold, pair-fold and
reduce for clarity.

19 years ago(Integer Operations): In gcd and lcm, show args.
Kevin Ryde [Fri, 11 Feb 2005 21:47:59 +0000 (21:47 +0000)]
(Integer Operations): In gcd and lcm, show args.
(Arithmetic): In truncate, add missing arg.

19 years ago(String Selection): In string-pad and
Kevin Ryde [Fri, 11 Feb 2005 21:44:44 +0000 (21:44 +0000)]
(String Selection): In string-pad and
string-pad-right, clarify which end the padding goes on, and merge
descriptions.

19 years ago*** empty log message ***
Kevin Ryde [Fri, 11 Feb 2005 21:42:29 +0000 (21:42 +0000)]
*** empty log message ***

19 years ago(reduce, reduce-right): New tests.
Kevin Ryde [Fri, 11 Feb 2005 21:40:32 +0000 (21:40 +0000)]
(reduce, reduce-right): New tests.

19 years ago(reduce, reduce-right): Don't call f with ridentity, use
Kevin Ryde [Fri, 11 Feb 2005 21:37:08 +0000 (21:37 +0000)]
(reduce, reduce-right): Don't call f with ridentity, use
it only if lst is empty, per srfi and intended optimization reduce
represents over fold.

19 years ago*** empty log message ***
Kevin Ryde [Thu, 10 Feb 2005 20:37:57 +0000 (20:37 +0000)]
*** empty log message ***