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Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 35 |
1 files changed, 35 insertions, 0 deletions
@@ -1,3 +1,38 @@ +Thu Mar 31 16:49:36 2016 Koichi Sasada <ko1@atdot.net> + + * gc.c: simplify allocate/free detecting logic at the end of marking. + + Before this change, heap_pages_min_slots are calculated at the + beggining sweeping phase. And this value is used at the end of + *next* marking phase. + + To simplify it, we use this value at the end of this marking phase. + It means that we don't need to store this value as global state. + + Also heap_pages_max_slots is calculated at the begging of sweeping + phase and used at the end of sweeping phase. + To simplify this logic, we introduced new global value + heap_pages_freeable_pages it means extra pages count we can free. + gc_sweep_step() checks this value and moves empty pages to tomb_heap + not more than this value. + + Because of this fix, heap_pages_swept_slots is no longer needed. + + * gc.c (rb_objspace_t::heap_pages): restruct the objspace global + status. + + remove the following fileds + * swept_slots (and heap_pages_swept_slots) + * min_free_slots (and heap_pages_min_free_slots) + * max_free_slots (and heap_pages_max_free_slots) + And add the following filed. + * freeable_pages (and heap_pages_freeable_pages) + + * gc.c (heap_pages_free_unused_pages): unlink tomb heap pages + because tomb heap should have only freeable pages. + + * gc.c (heap_extend_pages): add parameters for future extension. + Thu Mar 31 16:43:02 2016 Koichi Sasada <ko1@atdot.net> * gc.c: add GC parameters to configure the following values: |