From b3a4367ce40912344310eded05e3d6fa5657330f Mon Sep 17 00:00:00 2001 From: normal Date: Wed, 10 Sep 2014 06:32:44 +0000 Subject: 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 --- include/ruby/ruby.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') 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; -- cgit v1.1