diff options
| author | Koichi Sasada <[email protected]> | 2020-01-08 16:14:01 +0900 |
|---|---|---|
| committer | Koichi Sasada <[email protected]> | 2020-02-22 09:58:59 +0900 |
| commit | b9007b6c548f91e88fd3f2ffa23de740431fa969 (patch) | |
| tree | 1746393d1c5f704e8dc7e0a458198264062273bf /method.h | |
| parent | f2286925f08406bc857f7b03ad6779a5d61443ae (diff) | |
Introduce disposable call-cache.
This patch contains several ideas:
(1) Disposable inline method cache (IMC) for race-free inline method cache
* Making call-cache (CC) as a RVALUE (GC target object) and allocate new
CC on cache miss.
* This technique allows race-free access from parallel processing
elements like RCU.
(2) Introduce per-Class method cache (pCMC)
* Instead of fixed-size global method cache (GMC), pCMC allows flexible
cache size.
* Caching CCs reduces CC allocation and allow sharing CC's fast-path
between same call-info (CI) call-sites.
(3) Invalidate an inline method cache by invalidating corresponding method
entries (MEs)
* Instead of using class serials, we set "invalidated" flag for method
entry itself to represent cache invalidation.
* Compare with using class serials, the impact of method modification
(add/overwrite/delete) is small.
* Updating class serials invalidate all method caches of the class and
sub-classes.
* Proposed approach only invalidate the method cache of only one ME.
See [Feature #16614] for more details.
Notes
Notes:
Merged: https://github.com/ruby/ruby/pull/2888
Diffstat (limited to 'method.h')
| -rw-r--r-- | method.h | 11 |
1 files changed, 9 insertions, 2 deletions
@@ -69,8 +69,12 @@ typedef struct rb_callable_method_entry_struct { /* same fields with rb_method_e #define METHOD_ENTRY_VISI(me) (rb_method_visibility_t)(((me)->flags & (IMEMO_FL_USER0 | IMEMO_FL_USER1)) >> (IMEMO_FL_USHIFT+0)) #define METHOD_ENTRY_BASIC(me) (int) (((me)->flags & (IMEMO_FL_USER2 )) >> (IMEMO_FL_USHIFT+2)) -#define METHOD_ENTRY_COMPLEMENTED(me) ((me)->flags & IMEMO_FL_USER3) -#define METHOD_ENTRY_COMPLEMENTED_SET(me) ((me)->flags = (me)->flags | IMEMO_FL_USER3) +#define METHOD_ENTRY_COMPLEMENTED(me) ((me)->flags & IMEMO_FL_USER3) +#define METHOD_ENTRY_COMPLEMENTED_SET(me) ((me)->flags = (me)->flags | IMEMO_FL_USER3) +#define METHOD_ENTRY_CACHED(me) ((me)->flags & IMEMO_FL_USER4) +#define METHOD_ENTRY_CACHED_SET(me) ((me)->flags = (me)->flags | IMEMO_FL_USER4) +#define METHOD_ENTRY_INVALIDATED(me) ((me)->flags & IMEMO_FL_USER5) +#define METHOD_ENTRY_INVALIDATED_SET(me) ((me)->flags = (me)->flags | IMEMO_FL_USER5) static inline void METHOD_ENTRY_VISI_SET(rb_method_entry_t *me, rb_method_visibility_t visi) @@ -229,4 +233,7 @@ void rb_scope_visibility_set(rb_method_visibility_t); VALUE rb_unnamed_parameters(int arity); +void rb_clear_method_cache(VALUE klass_or_module, ID mid); +void rb_clear_method_cache_all(void); + #endif /* RUBY_METHOD_H */ |