From e9885185c4061dc30987e5897d8cece54c33600f Mon Sep 17 00:00:00 2001
From: usa <usa@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Thu, 13 Nov 2014 03:18:00 +0000
Subject: * rb_w32_fstat{,i64}: speed up.  adjuting timestamps in this function
   is to get rid of the side effect of ENV["TZ"].  then, if ENV["TZ"] is   not
 set, no need to adjust.  this change makes File#stat about 60%   faster.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48394 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 win32/win32.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

(limited to 'win32/win32.c')

diff --git a/win32/win32.c b/win32/win32.c
index 29f95c9a1f..325954ec3e 100644
--- a/win32/win32.c
+++ b/win32/win32.c
@@ -4815,6 +4815,8 @@ rb_w32_fstat(int fd, struct stat *st)
     if (ret) return ret;
 #ifdef __BORLANDC__
     st->st_mode &= ~(S_IWGRP | S_IWOTH);
+#else
+    if (GetEnvironmentVariableW(L"TZ", NULL, 0) == 0 && GetLastError() == ERROR_ENVVAR_NOT_FOUND) return ret;
 #endif
     if (GetFileInformationByHandle((HANDLE)_get_osfhandle(fd), &info)) {
 #ifdef __BORLANDC__
@@ -4835,7 +4837,12 @@ rb_w32_fstati64(int fd, struct stati64 *st)
 {
     BY_HANDLE_FILE_INFORMATION info;
     struct stat tmp;
-    int ret = fstat(fd, &tmp);
+    int ret;
+
+#ifndef __BORLANDC__
+    if (GetEnvironmentVariableW(L"TZ", NULL, 0) == 0 && GetLastError() == ERROR_ENVVAR_NOT_FOUND) return _fstati64(fd, st);
+#endif
+    ret = fstat(fd, &tmp);
 
     if (ret) return ret;
 #ifdef __BORLANDC__
-- 
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