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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 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 NET_SSL_SSL_CLIENT_SESSION_CACHE_H | 5 #ifndef NET_SSL_SSL_CLIENT_SESSION_CACHE_H |
6 #define NET_SSL_SSL_CLIENT_SESSION_CACHE_H | 6 #define NET_SSL_SSL_CLIENT_SESSION_CACHE_H |
7 | 7 |
8 #include <openssl/ssl.h> | 8 #include <openssl/ssl.h> |
9 #include <stddef.h> | 9 #include <stddef.h> |
10 | 10 |
11 #include <memory> | 11 #include <memory> |
12 #include <string> | 12 #include <string> |
13 | 13 |
| 14 #include "base/bind.h" |
14 #include "base/containers/mru_cache.h" | 15 #include "base/containers/mru_cache.h" |
15 #include "base/macros.h" | 16 #include "base/macros.h" |
| 17 #include "base/memory/memory_pressure_monitor.h" |
16 #include "base/synchronization/lock.h" | 18 #include "base/synchronization/lock.h" |
17 #include "base/threading/thread_checker.h" | 19 #include "base/threading/thread_checker.h" |
18 #include "base/time/time.h" | 20 #include "base/time/time.h" |
19 #include "net/base/net_export.h" | 21 #include "net/base/net_export.h" |
20 #include "net/ssl/scoped_openssl_types.h" | 22 #include "net/ssl/scoped_openssl_types.h" |
21 | 23 |
22 namespace base { | 24 namespace base { |
23 class Clock; | 25 class Clock; |
24 } | 26 } |
25 | 27 |
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67 | 69 |
68 using CacheEntryMap = | 70 using CacheEntryMap = |
69 base::HashingMRUCache<std::string, std::unique_ptr<CacheEntry>>; | 71 base::HashingMRUCache<std::string, std::unique_ptr<CacheEntry>>; |
70 | 72 |
71 // Returns true if |entry| is expired as of |now|. | 73 // Returns true if |entry| is expired as of |now|. |
72 bool IsExpired(CacheEntry* entry, const base::Time& now); | 74 bool IsExpired(CacheEntry* entry, const base::Time& now); |
73 | 75 |
74 // Removes all expired sessions from the cache. | 76 // Removes all expired sessions from the cache. |
75 void FlushExpiredSessions(); | 77 void FlushExpiredSessions(); |
76 | 78 |
| 79 // Clear cache on low memory notifications callback. |
| 80 void OnMemoryPressure( |
| 81 base::MemoryPressureListener::MemoryPressureLevel memory_pressure_level); |
| 82 |
77 std::unique_ptr<base::Clock> clock_; | 83 std::unique_ptr<base::Clock> clock_; |
78 Config config_; | 84 Config config_; |
79 CacheEntryMap cache_; | 85 CacheEntryMap cache_; |
80 size_t lookups_since_flush_; | 86 size_t lookups_since_flush_; |
81 | 87 |
82 // TODO(davidben): After https://crbug.com/458365 is fixed, replace this with | 88 // TODO(davidben): After https://crbug.com/458365 is fixed, replace this with |
83 // a ThreadChecker. The session cache should be single-threaded like other | 89 // a ThreadChecker. The session cache should be single-threaded like other |
84 // classes in net. | 90 // classes in net. |
85 base::Lock lock_; | 91 base::Lock lock_; |
86 | 92 |
| 93 std::unique_ptr<base::MemoryPressureListener> memory_pressure_listener_; |
| 94 |
87 DISALLOW_COPY_AND_ASSIGN(SSLClientSessionCache); | 95 DISALLOW_COPY_AND_ASSIGN(SSLClientSessionCache); |
88 }; | 96 }; |
89 | 97 |
90 } // namespace net | 98 } // namespace net |
91 | 99 |
92 #endif // NET_SSL_SSL_CLIENT_SESSION_CACHE_H | 100 #endif // NET_SSL_SSL_CLIENT_SESSION_CACHE_H |
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