(USE_THREADS, GUILE_ISELECT): Define always. We define them with

[bpt/guile.git] / libguile / ChangeLog

2002-11-07  Mikael Djurfeldt  <mdj@linnaeus>

	* 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_init): Undo unintentional API
	change.
	(scm_cond_broadcast): Added missing function.

2002-11-04  Marius Vollmer  <marius.vollmer@uni-dortmund.de>

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

2002-11-03  Marius Vollmer  <mvo@zagadka.ping.de>

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

	* iselect.c: Include "_scm.h" before testing HAVE_UNISTD_H.
	Thanks to Bill Schottstaedt!

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

	* _scm.h (HAVE_RESTARTABLE_SYSCALLS): Do define even when
	SCM_COPT_THREADS is defined.
	(SCM_SYSCALL): Use EINTR-expection version when SCM_COPT_THREADS
	is defined.
	
	* coop-pthreads.c: 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.
	
2002-11-02  Marius Vollmer  <mvo@zagadka.ping.de>

	* coop-pthreads.c, coop-pthreads.h: Redone completely, you might
	start testing it now.

	* _scm.h: 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.

2002-10-27  Marius Vollmer  <mvo@zagadka.ping.de>

	* scmsigs.c (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.
	
	* async.c (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.
	
	* iselect.c, iselect.h: 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.
	
        * inline.h (scm_cell, scm_double_cell): Also allow
	USE_COPT_THREADS to not protect the slot initializers.
	
	* init.c (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-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.

	* goops.c (hell_mutex): Reimplemented using scm_make_mutex, etc.

	* coop-pthreads.h, coop-pthreads.c: New, but unfinished.
	
2002-10-21  Marius Vollmer  <mvo@zagadka.ping.de>

	* null-threads.c: Include <time.h>.  Also, use <...> for inclusion
	of system headers.

	* async.c, goops.h, modules.h, validate.h (SCM_MAKE_VALIDATE_MSG):
	New.  Use it instead of SCM_MAKE_VALIDATE in lots of places to
	give better error messages.  Thanks to Bill Schottstaedt!

2002-10-19  Dirk Herrmann  <D.Herrmann@tu-bs.de>

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

2002-10-19  Dirk Herrmann  <D.Herrmann@tu-bs.de>

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

2002-10-16  Marius Vollmer  <marius.vollmer@uni-dortmund.de>

	* async.c (scm_system_async_mark_for_thread): Validate thread
	argument.

	* coop-threads.c (scm_i_thread_root): Do not validate argument.

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

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

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

	* Makefile.am (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_cond instead of coop_m and coop_c.

	* null-threads.c, null-threads.h: New files.

2002-10-15  Marius Vollmer  <mvo@zagadka.ping.de>

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

2002-10-13  Marius Vollmer  <mvo@zagadka.ping.de>

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

2002-10-13  Dirk Herrmann  <D.Herrmann@tu-bs.de>

	* evalext.h:  Replaced SCM_DEBUG_DEPRECATED with
	!SCM_ENABLE_DEPRECATED.

2002-10-11  Marius Vollmer  <marius.vollmer@uni-dortmund.de>

	* 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.

2002-10-10  Marius Vollmer  <marius.vollmer@uni-dortmund.de>

	* scmsigs.c (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.
	
2002-10-10  Marius Vollmer  <mvo@zagadka.ping.de>

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

	* __scm.h (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.
	
	* script.c (scm_compile_shell_switches): Do not set scm_mask_ints.
	Asyncs are enabled by default.

2002-10-09  Neil Jerram  <neil@ossau.uklinux.net>

	* vports.c (scm_make_soft_port): Allow vector argument to carry a
	6th element: an input waiting thunk.
	(sf_input_waiting): New.

2002-10-05  Marius Vollmer  <mvo@zagadka.ping.de>

	* root.c (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.
	
2002-10-04  Rob Browning  <rlb@defaultvalue.org>

	* 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.

	* numbers.c (s_scm_integer_expt): (expt 0 1) should be 1.

2002-10-04  Marius Vollmer  <mvo@zagadka.ping.de>

	* scmsigs.h (scm_sigaction_for_thread): New prototype.
	* scmsigs.c (got_signal): Removed.
	(signal_handler_cells, signal_handler_threads): New.
	(take_signal): Queue the cell of the signal for the specified
	thread.  Reset the signal handler on systems that don't have
	sigaction.
	(sys_deliver_signals): Removed.
	(close_1): New.
	(scm_sigaction_for_thread): Renamed from scm_sigaction and
	extended to also set the thread of a signal and allocate a cell
	for it.  Keep the Scheme name "sigaction".  Check that signum is
	within range.  Also, use SCM_VECTOR_REF instead of SCM_VELTS.
	(scm_sigaction): Implement in terms of scm_sigaction_for_thread.
	(scm_init_scmsigs): Allocate signal_handler_cells and
	signal_handler_threads vectors.

	* async.c: Removed GUILE_OLD_ASYNC_CLICK code.  Reorganized so
	that system asnycs and user asyncs are separated.  Reimplemented
	system asyncs to work per-thread.

	* gc.c (scm_init_gc): Do not use scm_system_async.

	* async.h (scm_asyncs_pending, scm_set_tick_rate,
	scm_set_switch_rate, scm_system_async_mark_from_signal_handler):
	Removed prototypes.
	(scm_i_queue_async_cell): New.
	
	* __scm.h (scm_asyncs_pending_p): Removed.
	(SCM_ASYNC_CLICK): Check scm_active_asyncs instead of
	scm_asyncs_pending_p.

	* async.h (scm_system_async_mark_for_thread): New prototype.

	* __scm.h: Removed GUILE_OLD_ASYNC_CLICK code.

	* root.h (scm_root_state): Added new "active_asyncs" slot.
	* root.c (scm_make_root): Initialize it to SCM_EOL.

	* coop-defs.h (coop_t): Added new "handle" slot.
	* coop-threads.c (all_threads, scm_current_thread,
	scm_all_threads, scm_i_thread_root): New.
	(scm_threads_init): Add main thread to all_threads.
	(scheme_launch_thread): Remove thread from all_threads when it
	terminates.
	(scm_call_with_new_thread): Initialize handle slot of coop_t
	structure and add new thread to all_threads.
	(scm_spawn_thread): Likewise.

	* threads.h (scm_current_thread, scm_all_threads): New prototypes.
	* threads.c (scm_current_thread, scm_all_threads): Register as
	primitives.

	* dynl.c: Use scm_lt_ prefix for libltdl functions.

2002-09-29  Neil Jerram  <neil@ossau.uklinux.net>

	* script.c (scm_compile_shell_switches): Fix bad spelling of
	`explicitly' in comment.

2002-09-28  Neil Jerram  <neil@ossau.uklinux.net>

	* posix.c (scm_geteuid, scm_getegid, scm_seteuid, scm_setegid):
	Refer to provided? in doc string rather than deprecated feature?.

2002-09-24  Gary Houston  <ghouston@arglist.com>

	* inline.h (scm_double_cell): prevent reordering of statements
	with any following code (for GCC 3 strict-aliasing).
	* numbers.c (scm_make_real), num2float.i.c (FLOAT2NUM): removed
	the earlier version of the reordering prevention.

2002-09-19  Han-Wen Nienhuys  <hanwen@cs.uu.nl>

	* inline.h (scm_double_cell): move SET_GCMARK set out of if body. 

2002-09-09  Han-Wen Nienhuys  <hanwen@cs.uu.nl>

	* gc-malloc.c (scm_gc_register_collectable_memory): more overflow
	protection.

2002-09-08  Han-Wen Nienhuys  <hanwen@cs.uu.nl>

	* inline.h: include stdio.h

	* smob.c (free_print): abort if scm_debug_cell_accesses_p is set

2002-09-05  Han-Wen Nienhuys  <hanwen@cs.uu.nl>

	* gc-segment.c (scm_i_make_initial_segment): check user settings
	for sanity.

	* gc-malloc.c (scm_gc_init_malloc): check user settings for
	sanity.

	* gc-freelist.c (scm_init_freelist): check user settings for sanity. 

	* struct.h: change scm_structs_to_free to scm_i_structs_to_free

	* gc-malloc.c (scm_gc_register_collectable_memory): use floats;
	these won't ever wrap around with high memory usage. Thanks to
	Sven Hartrumpf for finding this.

	* gc-freelist.c: include <stdio.h>

	* gc-malloc.c: add DEBUGINFO for mtrigger GCs.

2002-09-01  Marius Vollmer  <mvo@zagadka.ping.de>

	* vectors.h (SCM_VECTOR_REF): New.

	* snarf.h (SCM_DEFINE_PUBLIC): New.

2002-08-30  Marius Vollmer  <mvo@zagadka.ping.de>

	* socket.c (scm_addr_vector): Added size of address to arguments.
	Use it to avoid accessing a non-existent path in a sockaddr_un.
	Changed all callers.

2002-08-29  Han-Wen Nienhuys  <hanwen@cs.uu.nl>

	* gc.h: remove DOUBLECELL card flags.

	* gc-malloc.c (scm_calloc): try to use calloc() before calling
	scm_realloc().

	* gc-segment.c (scm_i_initialize_heap_segment_data): remove card
	init loop; handle this from scm_init_card_freelist()

	* gc-card.c (scm_init_card_freelist): init bit vector here.

	* numbers.c (scm_make_real): prevent reordering of statements
	num2float.i.c (FLOAT2NUM): idem

2002-08-27  Han-Wen Nienhuys  <hanwen@cs.uu.nl>

	* eval.h: prepend libguile/ to include path

2002-08-26  Marius Vollmer  <mvo@zagadka.ping.de>

	* script.c (scm_compile_shell_switches): Added "2002" to Copyright