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Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 39 |
1 files changed, 39 insertions, 0 deletions
@@ -1,5 +1,44 @@ 2012-04-03 Kaz Kylheku <kaz@kylheku.com> + Generational GC showing signs of working. One test case in + test suite fails. + + * gc.c (FRESHQ_SIZE): New preprocessor symbol. + (backptr_oflow, freshq, freshq_head, freshq_tail): New static + variables. + (make_obj): Place newly allocated generation 0 object into + freshq. If freshq becomes full, transfer oldest item into + generation 1. + (mark_obj): If doing only a partial gc, then do not mark + objects which are not generation 0. + (mark_mem_region): Valgrind support: cannot mark t.type field undefined + because it is a bitfield. Just mark the first SIZEOF_PTR bytes + of the object defined. + (mark): Under partial gc, mark the table of back pointers. + (sweep_one): New static function from the prior guts of sweep. + Reachable objects now get promoted to generation 1. + (sweep): Under partial gc, sweep just the freshq which identifies + the generation 0 objects, rather than the entire linked list of all the + heaps. + (gc): Trigger full gc also if the backptr list has overflowed + due to gc having been disabled. + Under generational gc, reset the static variables afterward: + clear the list of backpointers, and the freshq. + (gc_is_reachable): Under partial gc, report any mature object + as reachable. + (gc_set, gc_mutated): Handle backptr array overflow situation + when gc is disabled. + (gc_push): Bugfix: it is the newly pushed cons cell that has to be + marked as a root, not the value being pushed. + + * hash.c (sethash): Use set macro for storing value. + + * lib.h (set, mut, mpush): Fix wrong-way #if test for these macros. + The trivial versions were being defined uner CONFIG_GEN_GC and vice + versa! + +2012-04-03 Kaz Kylheku <kaz@kylheku.com> + * eval.c (op_modplace): push replaced with mpush (mutating push). * gc.c (gc_push): New function. |