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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef BASE_BUILD_TIME_H_ | 5 #ifndef BASE_BUILD_TIME_H_ |
6 #define BASE_BUILD_TIME_H_ | 6 #define BASE_BUILD_TIME_H_ |
7 | 7 |
8 #include "base/base_export.h" | 8 #include "base/base_export.h" |
9 #include "base/time/time.h" | 9 #include "base/time/time.h" |
10 | 10 |
11 namespace base { | 11 namespace base { |
12 | 12 |
13 // GetBuildTime returns the time at which the current binary was built. | 13 // GetBuildTime returns the time at which the current binary was built, |
| 14 // rounded down to 5:00:00am at the start of the day in UTC. |
14 // | 15 // |
15 // This uses the __DATE__ and __TIME__ macros, which don't trigger a rebuild | 16 // This uses a generated file, which doesn't trigger a rebuild when the time |
16 // when they change. However, official builds will always be rebuilt from | 17 // changes. It will, however, be updated whenever //build/util/LASTCHANGE |
17 // scratch. | 18 // changes. |
18 // | 19 // |
19 // Also, since __TIME__ doesn't include a timezone, this value should only be | 20 // This value should only be considered accurate to within a day. |
20 // considered accurate to a day. | 21 // It will always be in the past. |
21 // | 22 // |
22 // NOTE: This function is disabled except for the official builds, by default | 23 // Note: If the build is not official (i.e. is_official_build = false) |
23 // the date returned is "Sep 02 2008 08:00:00 PST". | 24 // this time will be set to 5:00:00am on the most recent first Sunday |
| 25 // of a month. |
24 Time BASE_EXPORT GetBuildTime(); | 26 Time BASE_EXPORT GetBuildTime(); |
25 | 27 |
26 } // namespace base | 28 } // namespace base |
27 | 29 |
28 #endif // BASE_BUILD_TIME_H_ | 30 #endif // BASE_BUILD_TIME_H_ |
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