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authornormal <normal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2014-09-10 06:32:44 +0000
committernormal <normal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2014-09-10 06:32:44 +0000
commitb3a4367ce40912344310eded05e3d6fa5657330f (patch)
tree16284601d291b707c65eae0838b990c09e97844e /include
parentea4c97904e37df0937af1742b41f3bb999b785b8 (diff)
rb_call_info_t: shrink to 96 bytes from 104 bytes on 64-bit
This keeps ci->flag and ci->aux.index consistent across 32-bit and 64-bit platforms. ci->flag: VM_CALL_* flags only use 9 bits, currently ci->aux.index: 2 billion ivars per class should be enough for anybody This saves around 50K allocations on "valgrind ruby -e exit" on x86-64 before: total heap usage: 48,122 allocs, 19,253 frees, 8,099,197 bytes allocated after: total heap usage: 48,069 allocs, 19,214 frees, 8,047,266 bytes allocated * vm_core.h (rb_call_info_t): ci->flag becomes 32-bit unsigned int ci->index becomes a 32-bit signed int (from signed long). Reorder for better packing on 64-bit, giving an 8 byte reduction from 104 to 96 bytes for each ci. * compile.c (new_callinfo, setup_args, iseq_compile_each, iseq_build_from_ary_body): adjust for type changes * vm_insnhelper.c (vm_getivar): ditto git-svn-id: svn+ssh:// b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'include')
1 files changed, 1 insertions, 1 deletions
diff --git a/include/ruby/ruby.h b/include/ruby/ruby.h
index ae55b0d..0aebfa4 100644
--- a/include/ruby/ruby.h
+++ b/include/ruby/ruby.h
@@ -775,7 +775,7 @@ struct RObject {
struct RBasic basic;
union {
struct {
- long numiv;
+ long numiv; /* only uses 32-bits */
VALUE *ivptr;
struct st_table *iv_index_tbl; /* shortcut for RCLASS_IV_INDEX_TBL(rb_obj_class(obj)) */
} heap;