ruby-changes:24617
From: shirosaki <ko1@a...>
Date: Thu, 9 Aug 2012 20:35:13 +0900 (JST)
Subject: [ruby-changes:24617] shirosaki:r36668 (trunk): Optimize winnt_stat
shirosaki 2012-08-09 20:34:48 +0900 (Thu, 09 Aug 2012) New Revision: 36668 http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=36668 Log: Optimize winnt_stat * test/ruby/test_file_exhaustive.rb (TestFileExhaustive#test_stat_special_file): add a test. GetFileAttributesExW fails to get attributes of special files such as pagefile.sys. * win32/win32.c (check_valid_dir): for performance, check the path by FindFirstFileW only if the path containts "..." * win32/win32.c (winnt_stat): use GetFileAttributesExW instead of FindFirstFileW since GetFileAttributesExW is faster. Based on the patch by Dusan D. Majkic. [ruby-core:47083] [Feature #6845] Modified files: trunk/ChangeLog trunk/test/ruby/test_file_exhaustive.rb trunk/win32/win32.c Index: ChangeLog =================================================================== --- ChangeLog (revision 36667) +++ ChangeLog (revision 36668) @@ -1,3 +1,18 @@ +Thu Aug 9 20:03:11 2012 Hiroshi Shirosaki <h.shirosaki@g...> + + * test/ruby/test_file_exhaustive.rb + (TestFileExhaustive#test_stat_special_file): add a test. + GetFileAttributesExW fails to get attributes of special files + such as pagefile.sys. + + * win32/win32.c (check_valid_dir): for performance, check the path + by FindFirstFileW only if the path containts "..." + + * win32/win32.c (winnt_stat): use GetFileAttributesExW instead of + FindFirstFileW since GetFileAttributesExW is faster. + Based on the patch by Dusan D. Majkic. + [ruby-core:47083] [Feature #6845] + Thu Aug 9 18:33:46 2012 Nobuyoshi Nakada <nobu@r...> * ruby.c (proc_options): show version only once even if -v and Index: win32/win32.c =================================================================== --- win32/win32.c (revision 36667) +++ win32/win32.c (revision 36668) @@ -4557,6 +4557,11 @@ WCHAR full[MAX_PATH]; WCHAR *dmy; + /* GetFileAttributes() determines "..." as directory. */ + /* We recheck it by FindFirstFile(). */ + if (wcsstr(path, L"...") == NULL) + return 0; + /* if the specified path is the root of a drive and the drive is empty, */ /* FindFirstFile() returns INVALID_HANDLE_VALUE. */ if (!GetFullPathNameW(path, sizeof(full) / sizeof(WCHAR), full, &dmy)) { @@ -4579,6 +4584,7 @@ { HANDLE h; WIN32_FIND_DATAW wfd; + WIN32_FILE_ATTRIBUTE_DATA wfa; const WCHAR *p = path; memset(st, 0, sizeof(*st)); @@ -4589,27 +4595,43 @@ errno = ENOENT; return -1; } - h = FindFirstFileW(path, &wfd); - if (h != INVALID_HANDLE_VALUE) { - FindClose(h); - st->st_mode = fileattr_to_unixmode(wfd.dwFileAttributes, path); - st->st_atime = filetime_to_unixtime(&wfd.ftLastAccessTime); - st->st_mtime = filetime_to_unixtime(&wfd.ftLastWriteTime); - st->st_ctime = filetime_to_unixtime(&wfd.ftCreationTime); - st->st_size = ((__int64)wfd.nFileSizeHigh << 32) | wfd.nFileSizeLow; + if (GetFileAttributesExW(path, GetFileExInfoStandard, (void*)&wfa)) { + if (wfa.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) { + if (check_valid_dir(path)) return -1; + st->st_size = 0; + } + else { + st->st_size = ((__int64)wfa.nFileSizeHigh << 32) | wfa.nFileSizeLow; + } + st->st_mode = fileattr_to_unixmode(wfa.dwFileAttributes, path); + st->st_atime = filetime_to_unixtime(&wfa.ftLastAccessTime); + st->st_mtime = filetime_to_unixtime(&wfa.ftLastWriteTime); + st->st_ctime = filetime_to_unixtime(&wfa.ftCreationTime); } else { - // If runtime stat(2) is called for network shares, it fails on WinNT. - // Because GetDriveType returns 1 for network shares. (Win98 returns 4) - DWORD attr = GetFileAttributesW(path); - if (attr == (DWORD)-1L) { + /* GetFileAttributesEx failed; check why. */ + int e = GetLastError(); + + if ((e == ERROR_FILE_NOT_FOUND) || (e == ERROR_INVALID_NAME) + || (e == ERROR_PATH_NOT_FOUND || (e == ERROR_BAD_NETPATH))) { + errno = map_errno(e); + return -1; + } + + /* Fall back to FindFirstFile for ERROR_SHARING_VIOLATION */ + h = FindFirstFileW(path, &wfd); + if (h != INVALID_HANDLE_VALUE) { + FindClose(h); + st->st_mode = fileattr_to_unixmode(wfd.dwFileAttributes, path); + st->st_atime = filetime_to_unixtime(&wfd.ftLastAccessTime); + st->st_mtime = filetime_to_unixtime(&wfd.ftLastWriteTime); + st->st_ctime = filetime_to_unixtime(&wfd.ftCreationTime); + st->st_size = ((__int64)wfd.nFileSizeHigh << 32) | wfd.nFileSizeLow; + } + else { errno = map_errno(GetLastError()); return -1; } - if (attr & FILE_ATTRIBUTE_DIRECTORY) { - if (check_valid_dir(path)) return -1; - } - st->st_mode = fileattr_to_unixmode(attr, path); } st->st_dev = st->st_rdev = (iswalpha(path[0]) && path[1] == L':') ? Index: test/ruby/test_file_exhaustive.rb =================================================================== --- test/ruby/test_file_exhaustive.rb (revision 36667) +++ test/ruby/test_file_exhaustive.rb (revision 36668) @@ -819,6 +819,13 @@ assert_equal(0, File::Stat.new(@zerofile).size) end + def test_stat_special_file + # test for special files such as pagefile.sys on Windows + assert_nothing_raised do + Dir::glob("C:/*.sys") {|f| File::Stat.new(f) } + end + end if DRIVE + def test_path_check assert_nothing_raised { ENV["PATH"] } end -- ML: ruby-changes@q... Info: http://www.atdot.net/~ko1/quickml/