diff options
| author | normal <normal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2014-09-10 06:32:44 +0000 |
|---|---|---|
| committer | normal <normal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2014-09-10 06:32:44 +0000 |
| commit | b3a4367ce40912344310eded05e3d6fa5657330f (patch) | |
| tree | 16284601d291b707c65eae0838b990c09e97844e /include/ruby | |
| parent | ea4c97904e37df0937af1742b41f3bb999b785b8 (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://ci.ruby-lang.org/ruby/trunk@47509 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'include/ruby')
| -rw-r--r-- | include/ruby/ruby.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/ruby/ruby.h b/include/ruby/ruby.h index ae55b0defa..0aebfa4e49 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; |