diff options
Diffstat (limited to 'gc.c')
-rw-r--r-- | gc.c | 12 |
1 files changed, 6 insertions, 6 deletions
@@ -5022,12 +5022,12 @@ vm_malloc_increase(rb_objspace_t *objspace, size_t new_size, size_t old_size, in } else { size_t sub = old_size - new_size; - if (sub > 0) { - if (malloc_increase > sub) { - ATOMIC_SIZE_SUB(malloc_increase, sub); - } - else { - malloc_increase = 0; + if (sub != 0) { + retry_sub:; + { + size_t old_increase = malloc_increase; + size_t new_increase = old_increase > sub ? old_increase - sub : 0; + if (ATOMIC_SIZE_CAS(malloc_increase, old_increase, new_increase) != old_increase) goto retry_sub; } } } |