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[Bug #18014] Fix memory leak in GC when using Ractors

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When a Ractor is removed, the freelist in the Ractor cache is not
returned to the GC, leaving the freelist permanently lost. This commit
recycles the freelist when the Ractor is destroyed, preventing a memory
leak from occurring.
This commit is contained in:
Peter Zhu 2021-06-29 14:32:50 -04:00
parent 119697f61e
commit 4a627dbdfd
Notes: git 2021-07-16 00:49:21 +09:00
4 changed files with 64 additions and 66 deletions
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6
internal/gc.h
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@ -73,6 +73,11 @@ struct rb_objspace; /* in vm_core.h */
#define RVARGC_PAYLOAD_INIT(obj, size) (void *)rb_rvargc_payload_init((VALUE)obj, (size_t)size)
typedef struct ractor_newobj_cache {
struct RVALUE *freelist;
struct heap_page *using_page;
} rb_ractor_newobj_cache_t;
/* gc.c */
extern VALUE *ruby_initial_gc_stress_ptr;
extern int ruby_disable_gc;
@ -115,6 +120,7 @@ void *ruby_sized_xrealloc(void *ptr, size_t new_size, size_t old_size) RUBY_ATTR
void *ruby_sized_xrealloc2(void *ptr, size_t new_count, size_t element_size, size_t old_count) RUBY_ATTR_RETURNS_NONNULL RUBY_ATTR_ALLOC_SIZE((2, 3));
void ruby_sized_xfree(void *x, size_t size);
int rb_slot_size(void);
void rb_gc_ractor_newobj_cache_clear(rb_ractor_newobj_cache_t *newobj_cache);
RUBY_SYMBOL_EXPORT_END
MJIT_SYMBOL_EXPORT_BEGIN