mirror/guile
mirror/guile
1
Fork 0
mirror of https://git.savannah.gnu.org/git/guile.git synced 2025-05-08 02:40:17 +02:00
Code Activity

Remove embedder requirement for per-object remset bits

Browse source 
Since we now have a field-logging write barrier, we don't need
per-object log bits.
This commit is contained in:
Andy Wingo 2025-01-06 15:47:20 +01:00
parent 4be3e69ac1
commit 8e631ca3f3
5 changed files with 3 additions and 57 deletions
Download patch file Download diff file Expand all files Collapse all files

26
benchmarks/simple-gc-embedder.h
View file

@ -102,32 +102,6 @@ static inline void gc_object_forward_nonatomic(struct gc_ref ref,
*tag_word(ref) = gc_ref_value(new_ref);
}
static inline int gc_object_set_remembered(struct gc_ref ref) {
uintptr_t *loc = tag_word(ref);
uintptr_t tag = atomic_load_explicit(loc, memory_order_relaxed);
while (1) {
if (tag & gcobj_remembered_bit)
return 0;
if (atomic_compare_exchange_weak_explicit(loc, &tag,
tag | gcobj_remembered_bit,
memory_order_acq_rel,
memory_order_acquire))
return 1;
}
}
static inline int gc_object_is_remembered_nonatomic(struct gc_ref ref) {
uintptr_t *loc = tag_word(ref);
uintptr_t tag = *loc;
return tag & gcobj_remembered_bit;
}
static inline void gc_object_clear_remembered_nonatomic(struct gc_ref ref) {
uintptr_t *loc = tag_word(ref);
uintptr_t tag = *loc;
*loc = tag & ~(uintptr_t)gcobj_remembered_bit;
}
static inline struct gc_atomic_forward
gc_atomic_forward_begin(struct gc_ref ref) {
uintptr_t tag = atomic_load_explicit(tag_word(ref), memory_order_acquire);