windows: use GetFileAttributesEx instead of stat

From a Hacker News comment:
"Recent finding, that sped up our systems from 15->3sec on 300,000+ files
filestamp check was to move from _stat to GetFileAttributesEx."

I do recall reading that calls to stat() on Windows were one of the
potential reasons Subversion is so slow on Windows...

1 files changed, 7 insertions, 2 deletions

diff --git a/src/disk_interface_test.cc b/src/disk_interface_test.cc
index 0ca34ad..d0794fd 100644
--- a/src/disk_interface_test.cc
+++ b/src/disk_interface_test.cc
@@ -107,16 +107,21 @@ class DiskInterfaceTest : public testing::Test {
   RealDiskInterface disk_;
 };
 
-TEST_F(DiskInterfaceTest, Stat) {
+TEST_F(DiskInterfaceTest, StatMissingFile) {
   EXPECT_EQ(0, disk_.Stat("nosuchfile"));
+}
 
+TEST_F(DiskInterfaceTest, StatBadPath) {
 #ifdef _WIN32
-  // TODO: find something that stat fails on for Windows.
+  string bad_path = "cc:\\foo";
+  EXPECT_EQ(-1, disk_.Stat(bad_path));
 #else
   string too_long_name(512, 'x');
   EXPECT_EQ(-1, disk_.Stat(too_long_name));
 #endif
+}
 
+TEST_F(DiskInterfaceTest, StatExistingFile) {
 #ifdef _WIN32
   ASSERT_EQ(0, system("cmd.exe /c echo hi > file"));
 #else