1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #ifndef BASE_WIN_WINDOWS_VERSION_H_
6 #define BASE_WIN_WINDOWS_VERSION_H_
10 #include "base/base_export.h"
11 #include "base/basictypes.h"
18 // The running version of Windows. This is declared outside OSInfo for
19 // syntactic sugar reasons; see the declaration of GetVersion() below.
20 // NOTE: Keep these in order so callers can do things like
21 // "if (base::win::GetVersion() >= base::win::VERSION_VISTA) ...".
23 VERSION_PRE_XP = 0, // Not supported.
25 VERSION_SERVER_2003, // Also includes XP Pro x64 and Server 2003 R2.
26 VERSION_VISTA, // Also includes Windows Server 2008.
27 VERSION_WIN7, // Also includes Windows Server 2008 R2.
28 VERSION_WIN8, // Also includes Windows Server 2012.
29 VERSION_WIN8_1, // Code named Windows Blue
30 VERSION_WIN_LAST, // Indicates error condition.
33 // A singleton that can be used to query various pieces of information about the
34 // OS and process state. Note that this doesn't use the base Singleton class, so
35 // it can be used without an AtExitManager.
36 class BASE_EXPORT OSInfo {
38 struct VersionNumber {
49 // The processor architecture this copy of Windows natively uses. For
50 // example, given an x64-capable processor, we have three possibilities:
51 // 32-bit Chrome running on 32-bit Windows: X86_ARCHITECTURE
52 // 32-bit Chrome running on 64-bit Windows via WOW64: X64_ARCHITECTURE
53 // 64-bit Chrome running on 64-bit Windows: X64_ARCHITECTURE
54 enum WindowsArchitecture {
61 // Whether a process is running under WOW64 (the wrapper that allows 32-bit
62 // processes to run on 64-bit versions of Windows). This will return
63 // WOW64_DISABLED for both "32-bit Chrome on 32-bit Windows" and "64-bit
64 // Chrome on 64-bit Windows". WOW64_UNKNOWN means "an error occurred", e.g.
65 // the process does not have sufficient access rights to determine this.
72 static OSInfo* GetInstance();
74 Version version() const { return version_; }
75 // The next two functions return arrays of values, [major, minor(, build)].
76 VersionNumber version_number() const { return version_number_; }
77 ServicePack service_pack() const { return service_pack_; }
78 WindowsArchitecture architecture() const { return architecture_; }
79 int processors() const { return processors_; }
80 size_t allocation_granularity() const { return allocation_granularity_; }
81 WOW64Status wow64_status() const { return wow64_status_; }
82 std::string processor_model_name();
84 // Like wow64_status(), but for the supplied handle instead of the current
85 // process. This doesn't touch member state, so you can bypass the singleton.
86 static WOW64Status GetWOW64StatusForProcess(HANDLE process_handle);
93 VersionNumber version_number_;
94 ServicePack service_pack_;
95 WindowsArchitecture architecture_;
97 size_t allocation_granularity_;
98 WOW64Status wow64_status_;
99 std::string processor_model_name_;
101 DISALLOW_COPY_AND_ASSIGN(OSInfo);
104 // Because this is by far the most commonly-requested value from the above
105 // singleton, we add a global-scope accessor here as syntactic sugar.
106 BASE_EXPORT Version GetVersion();
111 #endif // BASE_WIN_WINDOWS_VERSION_H_