* scheme-modules.texi (Compiled Code Modules): replace

[bpt/guile.git] / NEWS

diff --git a/NEWS b/NEWS
index 68431fd..25a0810 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -95,8 +95,37 @@ when evaluated and simply be ignored in a definition context.
 
 Use `substring-move!' instead.
 
+** Deprecated: procedure->macro
+
+Change your code to use either procedure->memoizing-macro or, probably better,
+to use r5rs macros.  Also, be aware that macro expansion will not be done
+during evaluation, but prior to evaluation.
+
 * Changes to the C interface
 
+** The SCM_VELTS macros now returns a read-only vector. For writing,
+use the new macros SCM_WRITABLE_VELTS, SCM_SET_VECTOR_LENGTH.  The use
+of SCM_WRITABLE_VELTS is discouraged, though.
+
+** Garbage collector rewrite.
+
+The garbage collector is cleaned up a lot, and now uses lazy
+sweeping. This is reflected in the output of (gc-stats); since cells
+are being freed when they are allocated, the cells-allocated field
+stays roughly constant.
+
+For malloc related triggers, the behavior is changed. It uses the same
+heuristic as the cell-triggered collections.  It may be tuned with the
+environment variables GUILE_MIN_YIELD_MALLOC.  This is the percentage
+for minimum yield of malloc related triggers. The default is 40.
+GUILE_INIT_MALLOC_LIMIT sets the initial trigger for doing a GC. The
+default is 200 kb.
+
+Debugging operations for the freelist have been deprecated, along with
+the C variables that control garbage collection.  The environment
+variables GUILE_MAX_SEGMENT_SIZE, GUILE_INIT_SEGMENT_SIZE_2,
+GUILE_INIT_SEGMENT_SIZE_1, and GUILE_MIN_YIELD_2 should be used.
+
 ** The struct scm_cell has been renamed to scm_t_cell
 
 This is in accordance to Guile's naming scheme for types.  Note that
@@ -113,9 +142,9 @@ cause aborts in long running programs.
 The new functions are more symmetrical and do not need cooperation
 from smob free routines, among other improvements.
 
-The new functions are scm_malloc, scm_realloc, scm_strdup,
-scm_strndup, scm_gc_malloc, scm_gc_realloc, scm_gc_free,
-scm_gc_register_collectable_memory, and
+The new functions are scm_malloc, scm_realloc, scm_calloc, scm_strdup,
+scm_strndup, scm_gc_malloc, scm_gc_calloc, scm_gc_realloc,
+scm_gc_free, scm_gc_register_collectable_memory, and
 scm_gc_unregister_collectable_memory.  Refer to the manual for more
 details and for upgrading instructions.
 
@@ -159,6 +188,12 @@ instead.
 
 Use scm_c_source_property_breakpoint_p instead.
 
+** Deprecated: scm_makmacro
+
+Change your code to use either scm_makmmacro or, probably better, to use r5rs
+macros.  Also, be aware that macro expansion will not be done during
+evaluation, but prior to evaluation.
+
 ** Removed from scm_root_state: def_inp, def_outp, def_errp, together
 with corresponding macros scm_def_inp, scm_def_outp and scm_def_errp.
 These were undocumented and unused copies of the standard ports at the
@@ -173,6 +208,16 @@ Now, caching of local variable positions during memoization is mandatory.
 However, the option to disable the caching has most probably not been used
 anyway.
 
+** Removed compile time option SCM_RECKLESS
+
+Full number of arguments checking of closures is mandatory now.  However, the
+option to disable the checking has most probably not been used anyway.
+
+** Removed compile time option SCM_CAUTIOUS
+
+Full number of arguments checking of closures is mandatory now.  However, the
+option to disable the checking has most probably not been used anyway.
+
 ** Removed definitions:  scm_lisp_nil, scm_lisp_t, s_nil_ify, scm_m_nil_ify,
 s_t_ify, scm_m_t_ify, s_0_cond, scm_m_0_cond, s_0_ify, scm_m_0_ify, s_1_ify,
 scm_m_1_ify, scm_debug_newcell,        scm_debug_newcell2, scm_tc16_allocated,