From b9007b6c548f91e88fd3f2ffa23de740431fa969 Mon Sep 17 00:00:00 2001
From: Koichi Sasada <ko1@atdot.net>
Date: Wed, 8 Jan 2020 16:14:01 +0900
Subject: 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.
---
 common.mk | 1 +
 1 file changed, 1 insertion(+)

(limited to 'common.mk')

diff --git a/common.mk b/common.mk
index 50f2c156a6..5680573bd2 100644
--- a/common.mk
+++ b/common.mk
@@ -2946,6 +2946,7 @@ mjit.$(OBJEXT): {$(VPATH)}thread.h
 mjit.$(OBJEXT): {$(VPATH)}thread_$(THREAD_MODEL).h
 mjit.$(OBJEXT): {$(VPATH)}thread_native.h
 mjit.$(OBJEXT): {$(VPATH)}util.h
+mjit.$(OBJEXT): {$(VPATH)}vm_callinfo.h
 mjit.$(OBJEXT): {$(VPATH)}vm_core.h
 mjit.$(OBJEXT): {$(VPATH)}vm_opts.h
 mjit_compile.$(OBJEXT): $(CCAN_DIR)/check_type/check_type.h
-- 
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