(USE_THREADS, GUILE_ISELECT): Define always.  We define them with
AC_DEFINE and not in some header file so that they are visible exactly
in the same way as they used to be.

(USE_THREADS, GUILE_ISELECT): Do not define here.  They are defined in
configure.in.

Removed SCM_API from function definitions.  SCM_API is only for
declarations.

Small textual changes to GOOPS manual (for HTML generation).

Remove old code that was already commented out.

* coop-pthreads.h: Added support for thread specific data to the
generic C API for the coop-pthreads case.

* threads.c, threads.h (scm_cond_broadcast): Added missing function.

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(format): Use 'monitor' properly.  Not the definition
needs to be restricted, the actual function needs to be.

* threads.c, threads.h (scm_cond_init): Undo unintentional API
change.

New file for tests related to options interface.

Fix error in recent define-option-interface "simplification".
Fix source breakpoints to cope with port whose filename is #f.
Ensure that position recording is enabled when source breakpoint module loaded.

Simplify code for define-option-interface.

Whitespace and markup fixes.

Import readline function dynamically when necessary.

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(coop_next_runnable_thread): Removed, wich should have happened when
GUILE_ISELECT was hard-wired.

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* __scm.h (USE_THREADS, GUILE_ISELECT): Define when
SCM_DEBUG_DEPRECATED.  Removed their use thru-out Guile.

Do not add "threads.o" to the libobjs, it is now always compiled.
(USE_THREADS, GUILE_ISELECT): Do not define.

(libguile_la_SOURCES): Added threads.c
(DOT_DOC_FILES): Added threads.doc.
(DOT_X_FILES): Added threads.x.
(EXTRA_libguile_la_SOURCES): Removed threads.c.
(noinst_HEADERS): Added coop-pthreads.c.
(modinclude_HEADERS): Added coop-pthreads.h.

(scm_integer_expt): Make 0^z == 0 for z != 0.  Also for reals.

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(format): Wrap a monitor around format:format since it is not
thread-safe.

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Include "_scm.h" before testing HAVE_UNISTD_H.  Thanks to Bill
Schottstaedt!

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(scm_integer_expt): Make 0^z == 0 for z != 0.

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(HAVE_RESTARTABLE_SYSCALLS): Do define even when
SCM_COPT_THREADS is defined.
(SCM_SYSCALL): Use EINTR-expection version when SCM_COPT_THREADS
is defined.

Some harmless renamings of internal stuff.
(create_thread): New, generalized version of
scm_call_with_new_thread.
(scm_call_with_new_thread): Use it.
(scm_spawn_thread): New, use create_thread.

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Redone completely, you might start testing it now.

Include <errno.h< so that SCM_SYSCALL is correctly
defined when HAVE_RESTARTABLE_SYSCALLS is not defined.
(HAVE_RESTARTABLE_SYSCALLS): Do not define when USE_COPT_THREADS
is defined.

fixed mangled comment.

Closer, but not there.

Updated, but still totally unusable.

* scheme-modules.texi (Environments): only available when
(ice-9 r5rs) is used.
* scsh.texi (The Scheme shell (scsh)): current url is www.scsh.net.

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Updated mutex and condition varable functions.

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Handle thread package "coop-pthread" with alias "copt" and define
USE_COPT_THREADS when it is selected.  Always define GUILE_ISELECT.

(reentry_barrier_mutex): Reimplemented with scm_make_mutex, etc.

* coop-pthreads.h, coop-pthreads.c: New, but unfinished.

(signal_cell_handlers, install_handler_data,
scm_delq_spine_x, really_install_handler, install_handler): New
scheme for triggering signal handlers, to simplify take_signal.
(take_signal): Simplified, to avoid race conditions.
(scm_sigaction_for_thread): Use new Scheme.  Validate that thread
hasn't exited yet.

(scm_async_click): Reset pending_asyncs, handle
signal_asyncs.  Don't set cdr of a non-signal async to #f.
(scm_i_queue_async_cell): Do not check cdr of cell for #f, queue
always.  Set pending_asyncs.
(scm_system_async_mark_for_thread): Check that thread has not
exited.
(scm_unmask_signals, decrease_block): Call scm_async_click after
block_asyncs becomes zero.

* __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.

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(%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.

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

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New stuff about the thread support.

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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.

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(%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.

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(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!

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* 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.

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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.

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

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(Whirlwind Tour): Added pointer to examples directory.

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