* __scm.h (SCM_ASYNC_CLICK): Check pending_asyncs instead of
active_asyncs.

* root.h (scm_root_state): Added pending_asyncs and signal_asyncs
fields.
* root.c (root_mark): Mark them.
(make_root): Initialize them.

(hell_mutex): Reimplemented using scm_make_mutex, etc.

Replaced GUILE_ISELECT with
USE_COOP_THREADS.
(scm_internal_select): Define one version for USE_COOP_THREADS and
one for USE_NULL_THREADS.
(scm_init_iselect): Likewise.

(scm_cell, scm_double_cell): Also allow USE_COPT_THREADS to not
protect the slot initializers.

(scm_init_guile_1): Call scm_init_thread_procs.  This is because
threads need to be initialized before the stack, but gsubrs such as
scm_timed_condition_variable_wait can only be created later.

* threads.h: Include "coop-pthreads.h" when requested.
(scm_threads_make_mutex, scm_threads_lock_mutex,
scm_threads_unlock_mutex, scm_threads_monitor): Removed, they were
not implemented anyway.
(scm_init_thread_procs, scm_try_mutex,
scm_timed_condition_variable_wait,
scm_broadcast_condition_variable, scm_c_thread_exited_p,
scm_thread_exited_p): New prototypes.
(struct timespec): Define if not already defined.
(scm_t_mutex, scm_mutex_init, scm_mutex_lock, scm_mutex_trylock,
scm_mutex_unlock, scm_mutex_destroy, scm_t_cond, scm_cond_init,
scm_cond_wait, scm_cond_timedwait, scm_cond_signal,
scm_cond_broadcast, scm_cond_destroy): Declarations moved here and
deprecated.

* threads.c: Include <errno.h>.  Include "coop-pthreads.c" when
requested.
(scm_thread_exited_p): New.
(scm_try_mutex, scm_broadcast_condition_variable): Newly
registered procedures.
(scm_wait_condition_variable, scm_timed_wait_condition_variable):
Use the latter as the procedure for "wait-condition-variable",
thus offering a optional timeout parameter to Scheme.
(scm_wait_condition_variable): Implement in terms of
scm_timed_wait_condition_variable.
(scm_mutex_init, scm_mutex_lock, scm_mutex_trylock,
scm_mutex_unlock, scm_mutex_destroy, scm_cond_init,
scm_cond_wait, scm_cond_timedwait, scm_cond_signal,
scm_cond_broadcast, scm_cond_destroy): Implement in terms of
scm_make_mutex, etc, and deprecate.
(scm_init_threads): Do not create smobs, leave this to
scm_threads_init.  Do not include "threads.x" file.
(scm_init_thread_procs): New, include "threads.x" here.

* null-threads.h (scm_null_mutex, scm_null_mutex_init,
scm_null_mutex_lock, scm_null_mutex_unlock,
scm_null_mutex_destroy, scm_null_condvar, scm_null_condvar_init,
scm_null_condvar_wait, scm_null_condvar_signal,
scm_null_condvar_destroy): Removed.
(scm_mutex_init, scm_mutex_lock, scm_mutex_unlock, scm_cond_init,
scm_cond_wait, scm_cond_signal, scm_cond_broadcast,
scm_cond_destory): Do not define, they are now deprecated and
handled by threads.{h,c}.

* null-threads.c (scm_null_mutex, scm_null_cond): Define here.
(scm_threads_init): Create smobs here, using the appropriate
sizes.
(block): Removed, now unused.
(scm_c_thread_exited_p): New.
(scm_null_mutex_init, scm_null_mutex_lock, scm_null_mutex_unlock,
scm_null_mutex_destroy, scm_null_condvar_init,
scm_null_condvar_wait, scm_null_condvar_signal,
scm_null_condvar_destroy): Removed and updated users to do their
task directly.
(scm_try_mutex, timeval_subtract,
scm_timed_wait_condition_variable,
scm_broadcast_condition_variable): New.
(scm_wait_condition_variable): Removed.

* coop-threads.c (scm_threads_init): Create smobs here, using the
appropriate sizes.
(scm_c_thread_exited_p, scm_try_mutex,
scm_timed_wait_condition_variable,
scm_broadcast_condition_variable): New.
(scm_wait_condition_variable): Removed.

* null-threads.h (scm_null_mutex, scm_null_mutex_init,
scm_null_mutex_lock, scm_null_mutex_unlock,
scm_null_mutex_destroy, scm_null_condvar, scm_null_condvar_init,
scm_null_condvar_wait, scm_null_condvar_signal,
scm_null_condvar_destroy): Removed.
(scm_mutex_init, scm_mutex_lock, scm_mutex_unlock, scm_cond_init,
scm_cond_wait, scm_cond_signal, scm_cond_broadcast,
scm_cond_destory): Do not define, they are now deprecated and
handled by threads.{h,c}.

* null-threads.c (scm_null_mutex, scm_null_cond): Define here.
(scm_threads_init): Create smobs here, using the appropriate
sizes.
(block): Removed, now unused.
(scm_c_thread_exited_p): New.
(scm_null_mutex_init, scm_null_mutex_lock, scm_null_mutex_unlock,
scm_null_mutex_destroy, scm_null_condvar_init,
scm_null_condvar_wait, scm_null_condvar_signal,
scm_null_condvar_destroy): Removed and updated users to do their
task directly.
(scm_try_mutex, timeval_subtract,
scm_timed_wait_condition_variable,
scm_broadcast_condition_variable): New.
(scm_wait_condition_variable): Removed.

* coop-defs.h (coop_m): Added 'level' field.
(scm_t_mutex, scm_mutex_init, scm_mutex_lock, scm_mutex_trylock,
scm_mutex_unlock, scm_mutex_destroy, scm_t_cond, scm_cond_init,
scm_cond_wait, scm_cond_timedwait, scm_cond_signal,
scm_cond_broadcast, scm_cond_destroy, struct timespec): Do not
define.
(coop_condition_variable_broadcast): New.

* coop-threads.c (scm_threads_init): Create smobs here, using the
appropriate sizes.
(scm_c_thread_exited_p, scm_try_mutex,
scm_timed_wait_condition_variable,
scm_broadcast_condition_variable): New.
(scm_wait_condition_variable): Removed.

* coop.c (coop_new_mutex_init): Initialize level.
(coop_mutex_trylock, coop_mutex_lock, coop_mutex_unlock): maintain
level.
(coop_condition_variable_signal): Renamed to
coop_condition_variable_broadcast and reimplemented in terms of
that.  Thus...
(coop_condition_variable_broadcast): New.

* upstream/Makefile.am (ltdl.h.diff, ltdl.c.diff): add $(srcdir)
in diff commands to first diff file.

*** empty log message ***

(%thread-handler): Explicitely return '#f'.  This value will be
returned by join-thread.

NEWS entry for breakpoints.

Rewrite chapter on debugging features.

Merge enhanced debugging features from `guile-debugger' package.

Make (scripts lint) announce resolved module name.

*** empty log message ***

* upstream/ltdl.c: New copy from libtool 1.4.3.
* raw-ltdl.c: Merged in changes from libtool 1.4.3.

*** empty log message ***

New stuff about the thread support.

*** empty log message ***

Changed logic in thread support configuration such that
--with-threads=no is equivalent to --with-threads=null.  On platforms
that are not supported by QuickThreads, we also use the null-threads.
Thus, USE_THREADS is always defined now.

Include <time.h>.  Also, use <...> for inclusion of system headers.

*** empty log message ***

(%thread-handler): Do not call unmask-signals, that should be
unnecessary now.

* readline.scm (activate-readline): Look for use-emacs-interface
option in the guile-user module instead of the-root-module.

*** empty log message ***

(SCM_MAKE_VALIDATE_MSG): New.  Use it instead of SCM_MAKE_VALIDATE in
lots of places to gove better error messages.  Thanks to Bill
Schottstaedt!

*** empty log message ***

* boot-9.scm (top-repl): Look for use-emacs-interface in
guile-user-module (should it be there?) instead of
the-root-module.

Auto docstring updates, including soft port enhancement.

* evalext.h, evalext.c (scm_definedp, scm_defined_p):  Renamed
scm_definedp to scm_defined_p and deprecated scm_definedp.

* async.h, async.c (scm_system_async):  Fixed deprecation to work
correctly when deprecated features are excluded.

Added blurb about "null" threads.

*** empty log message ***

Shuffled around and extended the thread configuration code to allow
the "null" thread package to be selected.  Define USE_NULL_THREADS in
that case.

(scm_system_async_mark_for_thread): Validate thread argument.

It's scm_t_cond, not scm_t_condvar.

(scm_t_cond): Renamed from scm_t_condvar, which was the wrong name.

(scm_i_thread_root): Do not validate argument.

(scm_init_feature): Don't add 'threads' for USE_NULL_THREADS.

(scm_cell, scm_double_cell): Also allow USE_NULL_THREADS to not
protect the slot initializers.

(scm_sigaction_for_thread): It's "USE_THREADS" not "USE_THREAD".

(noinst_HEADERS): Added null-threads.c.
(modinclude_HEADERS): Added null-threads.h.

* threads.h: Include null-threads.h when !USE_COOP_THREADS.
* threads.c: Include null-threads.c when !USE_COOP_THREADS.
(scm_init_threads): Use generic type names scm_t_mutex and
scm_t_coop instead of coop_m and coop_t.

New files.

... but not for guile-procedures.texi since that is created in the build dir.

Update to last change: include $(srcdir)/ in replaced $< constructs.

*** empty log message ***

Replaced "$<" in non-pattern rules with its value.  This is to support
makes that know about "$<" only in pattern rules, like Sun's make.

*** empty log message ***

(Whirlwind Tour): Added pointer to examples directory.

*** empty log message ***

(build-link): Include "-lguile-ltdl" in link flags.

* autogen.sh (ac_version): try automake 1.7 too.

*** empty log message ***

(libpath.h): Fixed typo in top_srcdir_absolute substitution.  Thanks
to David Allouche!

* evalext.h:  Replaced SCM_DEBUG_DEPRECATED with !SCM_ENABLE_DEPRECATED.

*** empty log message ***

* upstream/Makefile.am (ltdl.h.diff, ltdl.c.diff): Look for
raw-ltdl.h and raw-ltdl.c in "$(srcdir)/..".  This is needed for
VPATH builds.

(INCLUDES): Also look for includes in "." and
"$(srcdir)".  This is needed for VPATH builds.
(EXTRA_DIST): Also distribute EXTRA_HEADERS.

* async.c (s_scm_system_async_mark_for_thread): Only call
scm_i_thread_root when USE_THREADS is defined.  Use scm_root
otherwise.

* scmsigs.c (take_signal): Only call scm_i_thread_root when
USE_THREADS is defined.  Use scm_root otherwise.
(scm_sigaction_for_thread): Ignore THREAD argument when
USE_THREADS is not defined.  Also, move THREAD argument defaulting
out of HAVE_SIGACTION section, which was a bug.

*** empty log message ***

(scm_sigaction_for_thread): Store original handler in signal_handlers,
not the closure that is used as the async.  The closure is stored in
signal_handler_cells, as previously.

*** empty log message ***

(System Asyncs): Updated.

(top-repl): Use 2 as the limit when saving the stack.
(error-catching-loop): use call-with-blocked-asyncs and
call-with-unblocked-asyncs instead of mask-signals and unmask-signals.

(SCM_ASYNC_TICK): Do without the scm_active_asyncs abbrev.

* async.h (scm_call_with_blocked_asyncs,
scm_call_with_unblocked_asyncs, scm_c_call_with_blocked_asyncs,
scm_c_call_with_unblocked_asyncs): New prototypes.
(scm_mask_signals, scm_unmask_signals): Deprecated.
(scm_mask_ints): Turned into a macro.

* async.c (scm_mask_ints): Removed.
(scm_run_asyncs): Do not set scm_mask_ints while running an async.
this should not be necessary.
(scm_async_click): Test block_asyncs instead of scm_mask_ints.
(scm_mask_signals, scm_unmask_signals): Deprecated.  Emit
deprecation warning and check for errornous use.  Set block_asyncs
instead of scm_mask_ints.
(increase_block, decrease_block, scm_call_with_blocked_asyncs,
scm_call_with_unblocked_asyncs, scm_c_call_with_blocked_asyncs,
scm_c_call_with_unblocked_asyncs): New.

* root.h (scm_root_state): Added 'block_async' slot.
(scm_active_asyncs): Removed abbrev.
* root.c (scm_make_root): Initialize 'block_asyncs' slot.

(scm_compile_shell_switches): Do not set scm_mask_ints.  Asyncs are
enabled by default.

* Makefile.am (srfiinclude_HEADERS, srfiincludedir): install the
srfi headers into guile/srfi/.

* upstream/Makefile.am (ltdl.h.diff): remove
SCM_INSERTED_DLSYMLIST_STRUCT_DECL during diff computation.
(ltdl.c.diff): remove SCM_INSERTED_DLSYMLIST_STRUCT_DECL during
diff computation.

* raw-ltdl.h: add SCM_INSERTED_DLSYMLIST_STRUCT_DECL so we can
insert our own struct name here.

* guile-ltdl.h: add scm_lt_dlsymlist typedef.
(scm_lt_dlpreload_default): new function.  Replaces
scm_lt_dlset_preloaded_symbols which depended on global that
libtool automagically defines in binaries, not libs.

* guile-ltdl.c (scm_lt_dlpreload_default): new function.  Replaces
scm_lt_dlset_preloaded_symbols which depended on global that
libtool automagically defines in binaries, not libs.  Now the call
in guile.c has to pass us that magic value.
(SCM_INSERTED_DLSYMLIST_STRUCT_DECL): used to add a struct name in
the lt_dlsymlist typedef -- we use such a crazy name so we can
remove this in the upstream diff computation.

*** empty log message ***

* guile.c (main): change to call scm_lt_dlpreload_default and pass
in lt_preloaded_symbols, a value libtool automagically adds to the
binary.

Use scm_num2int rather than SCM_INUM in soft port extension.

Extend soft ports to use input-waiting thunks.

*** empty log message ***

* scheme-scheduling.texi (Asyncs): Updated.
* posix.texi (sigaction): Updated.

*** empty log message ***

*** empty log message ***

(root_mark): Mark active_asyncs slot.

* async.c (scm_async_click): Set the cdr of a executed handler
cell to SCM_BOOL_F, not SCM_EOL.
(scm_i_queue_async_cell): Queue the cell at the end of the list,
and only if the handler procedure is not already present.
(scm_system_async_mark_for_thread): Initialize cdr of handler cell
with SCM_BOOL_F.
* scmsigs.c (scm_sigaction_for_thread): Likewise.

*** empty log message ***

(end-multiline): Use '*function-name*' instead of nonexisting 'name'.

(ltdl.h.diff, ltdl.c.diff): Create them in '.' not in 'upstream' since
we are already in upstream.

Make sure that $autoheader is always set.  When we would use the plain
"autoconf", $autoheader would end up empty and libguile/scmconfig.h.in
would not be updated.

* configure.in: turn on -Werror by default.  We're now clean.  I'd
like to stay that way.  If we want, we can turn it off by default
when we make the stable release, but I caught a lot of bugs this
way.  Accomodate libguile-ltdl -- therea are some ltdl things that
are commented out now INCLTDL and LIBLTDL.  I think we may not
need them anymore, but I'll leave them until we're sure.  We also
killed off the libltdl dir and related options including the
AC_CONFIG_SUBDIRS.  I also added some explicit tests for some
headers and functions that weren't listed but were in
scmconfig.h.in. though this may have been unnecessary.

* autogen.sh: remove support for libltdl sub-configure.
(ac_version): widen support check to any 2.5?  autoconf version.
2.54 is out now.

* Makefile.am (SUBDIRS): remove libltdl.

*** empty log message ***

* guile.c (main): switch to scm_lt_dlset_preloaded_symbols;

* dynl.c (sysdep_dynl_link): switch to scm_lt_dlhandle,
scm_lt_dlopenext, and scm_lt_dlerror.
(sysdep_dynl_unlink): switch to scm_lt_dlhandle, scm_lt_dlclose,
and scm_lt_dlerror.
(sysdep_dynl_func): switch to scm_lt_dlhandle, scm_lt_dlsym,
and scm_lt_dlerror.
(sysdep_dynl_init): switch to scm_lt_dlinit();

* Makefile.am (libguile_la_LIBADD): switch to use
libguile-ltdl.la.

* ChangeLog: moved from ../libltdl.

* raw-ltdl.h: guile's modified version of the upstream ltdl.h.

* raw-ltdl.c: guile's modified version of the upstream ltdl.c.

* raw-ltdl.c: Remove custom realloc. (#define rpl_realloc
realloc).  You can't define realloc like this unless you also
define malloc.  This is a quick hack for now; we may want
something cleaner later.
(memcpy): coerce ptrs to (char *) before copying characters
through them -- I can't recall for sure, but I believe this was
causing an overrun error at times.
(realloc): commented out -- as mentioned above, you can't define
your own malloc unless you know enough about the malloc in use to
be able to tell how big the src ptr is.  The disabled code
incorrectly used the *destination* ptr to decide how much to copy.
This sometimes results in out-of-bound accesses which cause
segfaults.
(tryall_dlopen_module): check to be sure (dirname_len > 0) before
testing first character against '/'.
(try_dlopen): check for feof(file) in read loop -- otherwise
infloop?
(scm_lt_dlopenext): remove unused variable file_found.
(LT_EOS_CHAR): moved here from guile-ltdl.h.

* guile-ltdl.h: main header file for guile's internal
libguile-ltdl.

* raw-ltdl.c: Remove custom realloc. (#define rpl_realloc
realloc).  You can't define realloc like this unless you also
define malloc.  This is a quick hack for now; we may want
something cleaner later.
(memcpy): coerce ptrs to (char *) before copying characters
through them -- I can't recall for sure, but I believe this was
causing an overrun error at times.
(realloc): commented out -- as mentioned above, you can't define
your own malloc unless you know enough about the malloc in use to
be able to tell how big the src ptr is.  The disabled code
incorrectly used the *destination* ptr to decide how much to copy.
This sometimes results in out-of-bound accesses which cause
segfaults.
(tryall_dlopen_module): check to be sure (dirname_len > 0) before
testing first character against '/'.
(try_dlopen): check for feof(file) in read loop -- otherwise
infloop?
(scm_lt_dlopenext): remove unused variable file_found.
(LT_EOS_CHAR): moved here from guile-ltdl.h.