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gc.c (mrb_obj_alloc): remove free_next,free_prev from heap pages

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It used to be maintain heap pages with allocatable objects (free_heaps)
but we can save two words (16 bytes) per page by scanning live heap pages.
This commit is contained in:
Yukihiro "Matz" Matsumoto
2023-06-26 23:56:45 +09:00
parent 695ad6ea95
commit 38b9a25e83
2 changed files with 10 additions and 41 deletions
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include/mruby/gc.h
-3
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@@ -45,8 +45,6 @@ typedef struct mrb_heap_page {
struct RBasic *freelist;
struct mrb_heap_page *prev;
struct mrb_heap_page *next;
struct mrb_heap_page *free_next;
struct mrb_heap_page *free_prev;
mrb_bool old:1;
/* Flexible array members area a C99 feature, not C++ compatible */
/* void* objects[]; */
@@ -59,7 +57,6 @@ typedef struct mrb_heap_page {
typedef struct mrb_gc {
mrb_heap_page *heaps; /* heaps for GC */
mrb_heap_page *sweeps; /* page where sweep starts */
mrb_heap_page *free_heaps;
struct RBasic *gray_list; /* list of gray objects to be traversed incrementally */
struct RBasic *atomic_gray_list; /* list of objects to be traversed atomically */
size_t live; /* count of live objects */