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1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2010 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_NSS_UTIL_H_ | 5 #ifndef BASE_NSS_UTIL_H_ |
6 #define BASE_NSS_UTIL_H_ | 6 #define BASE_NSS_UTIL_H_ |
7 | 7 |
8 #include "base/basictypes.h" | 8 #include "base/basictypes.h" |
9 | 9 |
10 #if defined(USE_NSS) | |
11 class Lock; | |
12 #endif // defined(USE_NSS) | |
wtc
2010/06/21 22:40:53
Nit: two spaces before the comment. See the Style
davidben
2010/06/22 02:54:56
Done.
| |
13 | |
10 // This file specifically doesn't depend on any NSS or NSPR headers because it | 14 // This file specifically doesn't depend on any NSS or NSPR headers because it |
11 // is included by various (non-crypto) parts of chrome to call the | 15 // is included by various (non-crypto) parts of chrome to call the |
12 // initialization functions. | 16 // initialization functions. |
13 namespace base { | 17 namespace base { |
14 | 18 |
15 class Time; | 19 class Time; |
16 | 20 |
17 // Initialize NRPR if it isn't already initialized. This function is | 21 // Initialize NRPR if it isn't already initialized. This function is |
18 // thread-safe, and NSPR will only ever be initialized once. NSPR will be | 22 // thread-safe, and NSPR will only ever be initialized once. NSPR will be |
19 // properly shut down on program exit. | 23 // properly shut down on program exit. |
20 void EnsureNSPRInit(); | 24 void EnsureNSPRInit(); |
21 | 25 |
22 // Initialize NSS if it isn't already initialized. This must be called before | 26 // Initialize NSS if it isn't already initialized. This must be called before |
23 // any other NSS functions. This function is thread-safe, and NSS will only | 27 // any other NSS functions. This function is thread-safe, and NSS will only |
24 // ever be initialized once. NSS will be properly shut down on program exit. | 28 // ever be initialized once. NSS will be properly shut down on program exit. |
25 void EnsureNSSInit(); | 29 void EnsureNSSInit(); |
26 | 30 |
27 #if defined(OS_CHROMEOS) | 31 #if defined(OS_CHROMEOS) |
28 // Open the r/w nssdb that's stored inside the user's encrypted home directory. | 32 // Open the r/w nssdb that's stored inside the user's encrypted home directory. |
29 void OpenPersistentNSSDB(); | 33 void OpenPersistentNSSDB(); |
30 #endif | 34 #endif |
31 | 35 |
32 // Convert a NSS PRTime value into a base::Time object. | 36 // Convert a NSS PRTime value into a base::Time object. |
33 // We use a int64 instead of PRTime here to avoid depending on NSPR headers. | 37 // We use a int64 instead of PRTime here to avoid depending on NSPR headers. |
34 Time PRTimeToBaseTime(int64 prtime); | 38 Time PRTimeToBaseTime(int64 prtime); |
35 | 39 |
40 #if defined(USE_NSS) | |
41 // NSS has a bug which can cause a deadlock or stall in some cases when writing | |
42 // to the certDB. It also has a bug which causes concurrent key pair | |
43 // generations to scribble over each other. To work around this, we synchronize | |
44 // writes to the NSS databases with a global lock. The lock is hidden beneath a | |
45 // function for easy disabling when the bug is fixed. Callers should allow for | |
46 // it to return NULL in the future. | |
47 // | |
48 // See https://bugzilla.mozilla.org/show_bug.cgi?id=564011 | |
49 Lock* GetNSSWriteLock(); | |
50 | |
51 // A helper class that acquires the NSS write Lock while the AutoNSSWriteLock | |
52 // is in scope. | |
53 class AutoNSSWriteLock { | |
54 public: | |
55 AutoNSSWriteLock(); | |
56 ~AutoNSSWriteLock(); | |
57 private: | |
58 Lock *lock_; | |
59 DISALLOW_COPY_AND_ASSIGN(AutoNSSWriteLock); | |
60 }; | |
61 | |
62 #endif // defined(USE_NSS) | |
davidben
2010/06/22 02:54:56
Also added a space here.
| |
63 | |
36 } // namespace base | 64 } // namespace base |
37 | 65 |
38 #endif // BASE_NSS_UTIL_H_ | 66 #endif // BASE_NSS_UTIL_H_ |
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