custom tc7 type. This will make it easier to support R5RS
multiple value continuations, without the use of a Scheme-level
wrapper.
* continuations.c (scm_tc16_continuation, continuation_mark,
continuation_free, continuation_print, continuation_apply):
new SMOB support.
(scm_make_continuation): new procedure, replaces scm_make_cont
with a different interface.
(copy_stack_and_call, scm_dynthrow, scm_init_continuations): rewritten.
(CHEAP_CONTINUATIONS): removed non-working code completely.
(scm_call_continuation): removed.
* continuations.h (struct scm_contregs): add num_stack_items and
stack fields. previously stack was stored following this struct:
use a tail array instead.
(SCM_CONTINUATIONP): new macro.
(SCM_CONTINUATION_LENGTH, SCM_SET_CONTINUATION_LENGTH):
rewritten.
(SCM_SET_CONTREGS): removed.
* tags.h: removed scm_tc7_contin (was tag 61).
* debug.c, gc.c, hash.c, print.c, procprop.c, procs.c:
removed scm_tc7_contin support.
* eval.c: use scm_make_continuation instead of scm_make_cont.
don't set jump buffers here. remove scm_tc7_contin support.
* init.c, root.c: create SMOB continuation for rootcont instead
of scm_tc7_contin. call scm_init_continuations before
scm_init_root.
* root.c: remove support for static jmpbuf. It's not used by
default and I broke it. create SMOB continuation for rootcont.
* stacks.c: use SCM_CONTINUATIONP.
* Fix some string/symbol output problems with regards to substrings.
* Fix error output to prefer procedure name parameters over stack data.
* Use SCM_(SET_)?FILENAME where appropriate.
* Prefer calling scm_remember over scm_protect/unprotect_object calls.
about any possible false positives.
(scm_debug_newcell): don't change cell type to `allocated'.
(scm_debug_newcell2): ditto.
(scm_gc_for_newcell): ditto.
(scm_gc_mark): remove the tc16_allocated case.
account, but keeping more or less the same values as previously.
added some simple helper macros.
(CLUSTER_SIZE_IN_BYTES, ALIGNMENT_SLACK): defined to take cards
into account.
(BVEC_*, scm_mark_space_t, current_mark_space, mark_space_ptr,
current_mark_space_offset, mark_space_head, get_bvec,
clear_mark_space): new functions and supporting variables, types
and macros that implement mark space management.
(scm_igc): clear the mark space (all of it) before beginning the
mark phase.
(scm_gc_mark): changed the tests for rogue cells, much simplified
throughout (no different mark bit locations to worry about now).
(scm_mark_locations): don't consider card header cells.
(scm_cellp): ditto.
(scm_gc_sweep): simplified.
(init_heap_seg): changed to take cards into account.
sweep time, total marked cells, total swept cells, and number of
times GC was invoked.
(gc_start_stats): renamed from scm_gc_start, made static, taught
to init the new stats.
(gc_end_stats): renamed from scm_gc_end, made static, taught to
calculate the new stats.
(scm_igc): don't call gc_start_stats unless we are sure that we
are indeed going to collect. also, added some timekeeping between
the mark and sweep phases.
(scm_gc_sweep): count number of cells we sweep as we go.
* gc.h: removed prototypes for scm_gc_{start,end}.
doesn't yield any new cells. In theory this could happen if all
cells allocated with NEWCELL are either in use or conservatively
marked and all cluster spine cells are conservatively marked.
(Thanks to Dirk.)
scm_default_min_yield_1, scm_default_init_heap_size_2,
scm_default_min_yield_2, scm_default_max_segment_size): New global
variables. Can be customized by the application before booting
Guile. (We might want to be able to control these parameters
dynamically through the "options interface" in the future, but
note that that is additional functionality. Here we're giving
default values which the environment variables can override.)
the yucky, ugly and nasty conditional compilation back. sorry,
but it was either that or requiring GAWK to build Guile.
removed the code that implemented the old GC scheme.
* init.c (scm_boot_guile_1): removed the code conditioned on
!GUILE_NEW_GC_SCHEME.
* __scm.h: (GUILE_NEW_GC_SCHEME): removed.
* gc.c (scm_protect_object, scm_unprotect_object): change the
implementation to more efficient (at least in the time complexity
sense). the calls should now also be thread-safe -- I suspect
that people expect them to be. (thanks to Han-Wen Nienhuys)
removed the code that implemented the old GC scheme.
* hashtab.c (scm_hash_fn_create_handle_x): add missing
SCM_REALLOW_INTS before return.
(scm_before_gc_c_hook, scm_before_mark_c_hook,
scm_before_sweep_c_hook, scm_after_sweep_c_hook,
scm_after_gc_c_hook): New C level hooks.
(scm_after_gc_hook): New Scheme level hook.
(scm_gc_sweep): Moved scanning of weak vectors to weaks.c.
(scm_igc): Moved initialization of scm_weak_vectors and the call
to scm_guardian_gc_init to respective module.
(scm_mark_weak_vector_spines): Moved to weaks.c;
Call to scm_guardian_zombify moved to guardians.c;
Run scm_before_gc_c_hook, scm_before_sweep_c_hook,
scm_after_gc_c_hook at appropriate places.
(scm_init_gc): Initialize scm_after_gc_hook.
and we don't want that.
(INCLUDES): Removed all -I options except for the root source
directory and the root build directory.
* *.*: Change includes so that they always use the "prefixes"
libguile/, qt/, guile-readline/, or libltdl/.
(Thanks to Tim Mooney.)
