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vm_core.h (struct rb_iseq_struct): stack_max is uint32_t

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* vm_core.h (struct rb_iseq_struct): stack_max is uint32_t
  No program will ever need more than a few megabytes of stack,
  so there's no sense in using a 64-bit counter for stack
  accounting.  Packing this with the 32-bit type enum reduces
  rb_iseq_struct from 312 to 304 bytes on 64-bit systems.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46798 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
normal 2014-07-13 07:01:09 +00:00
parent da16701b45
commit 499f6d62c7
2 changed files with 5 additions and 2 deletions
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4
ChangeLog
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@ -1,3 +1,7 @@
Sun Jul 13 15:53:25 2014 Eric Wong <e@80x24.org>
* vm_core.h (struct rb_iseq_struct): stack_max is uint32_t
Sun Jul 13 10:56:26 2014 Nobuyoshi Nakada <nobu@ruby-lang.org> Sun Jul 13 10:56:26 2014 Nobuyoshi Nakada <nobu@ruby-lang.org>
* configure.in (rb_cv_broken_backtrace): exit with failure * configure.in (rb_cv_broken_backtrace): exit with failure

3
vm_core.h
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@ -204,6 +204,7 @@ struct rb_iseq_struct {
ISEQ_TYPE_MAIN, ISEQ_TYPE_MAIN,
ISEQ_TYPE_DEFINED_GUARD ISEQ_TYPE_DEFINED_GUARD
} type; /* instruction sequence type */ } type; /* instruction sequence type */
uint32_t stack_max; /* for stack overflow check */
rb_iseq_location_t location; rb_iseq_location_t location;
@ -271,8 +272,6 @@ struct rb_iseq_struct {
int arg_keyword_required; int arg_keyword_required;
ID *arg_keyword_table; ID *arg_keyword_table;
size_t stack_max; /* for stack overflow check */
/* catch table */ /* catch table */
struct iseq_catch_table_entry *catch_table; struct iseq_catch_table_entry *catch_table;
int catch_table_size; int catch_table_size;