Benchmark with skipping FindFirstFileW

bench.txt

Rails 3.2.1 empty app

ruby 2.0.0dev (2012-02-18 trunk 34670) [i386-mingw32]

X:\empty>timer ruby script\rails r 'p $:.size, $".size'
59
744
real    6.708
system  4.227
user    2.433

X:\empty>timer ruby script\rails r 'p $:.size, $".size'
59
744
real    6.692
system  4.227
user    2.464

X:\empty>timer ruby script\rails r 'p $:.size, $".size'
59
744
real    6.692
system  4.570
user    2.106


patched ruby 2.0.0dev (2012-02-18 trunk 34670) [i386-mingw32]

X:\empty>timer ruby script\rails r 'p $:.size, $".size'
59
744
real    2.418
system  0.920
user    1.513

X:\empty>timer ruby script\rails r 'p $:.size, $".size'
59
744
real    2.402
system  0.811
user    1.606

X:\empty>timer ruby script\rails r 'p $:.size, $".size'
59
744
real    2.418
system  0.686
user    1.684

skip_find_first_file.patch

diff --git a/file.c b/file.c
index 11e9766..39aacc2 100644
--- a/file.c
+++ b/file.c
@@ -3196,7 +3196,8 @@ file_expand_path(VALUE fname, VALUE dname, int abs_mode, VALUE result)
 	wstr = ALLOCV_N(WCHAR, v, len);
 	MultiByteToWideChar(CP_UTF8, 0, RSTRING_PTR(tmp), -1, wstr, len);
 	if (tmp != result) rb_str_resize(tmp, 0);
-	h = FindFirstFileW(wstr, &wfd);
+//	h = FindFirstFileW(wstr, &wfd);
+	h = INVALID_HANDLE_VALUE;
 	ALLOCV_END(v);
 	if (h != INVALID_HANDLE_VALUE) {
 	    size_t wlen;