From eeb05e8c119f8cab6434d90f21551b6bb2954778 Mon Sep 17 00:00:00 2001 From: normal Date: Sun, 20 Jul 2014 04:19:06 +0000 Subject: rb_io_buffer_t: pack structure * include/ruby/io.h (rb_io_buffer_t): pack structure Reduces rb_io_t from 200 to 192 bytes, allowing rb_io_t to occupy one less cache line. [Feature #10050] n.b. this leaves a 4-byte hole after the `cbuf' field which may be used for future expansion. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46884 b2dd03c8-39d4-4d8f-98ff-823fe69b080e --- include/ruby/io.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'include/ruby') diff --git a/include/ruby/io.h b/include/ruby/io.h index bdde9844e2..8f0367707e 100644 --- a/include/ruby/io.h +++ b/include/ruby/io.h @@ -51,12 +51,12 @@ extern "C" { RUBY_SYMBOL_EXPORT_BEGIN -typedef struct { +typedef PACKED_STRUCT(struct { char *ptr; /* off + len <= capa */ int off; int len; int capa; -} rb_io_buffer_t; +}) rb_io_buffer_t; typedef struct rb_io_t { FILE *stdio_file; /* stdio ptr for read/write if available */ -- cgit v1.2.3