Renaming _openssl files to _impl

net/ssl/ssl_client_session_cache_openssl.h

-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef NET_SSL_SSL_CLIENT_SESSION_CACHE_OPENSSL_H
-#define NET_SSL_SSL_CLIENT_SESSION_CACHE_OPENSSL_H
-
-#include <openssl/ssl.h>
-#include <stddef.h>
-
-#include <memory>
-#include <string>
-
-#include "base/containers/mru_cache.h"
-#include "base/macros.h"
-#include "base/synchronization/lock.h"
-#include "base/threading/thread_checker.h"
-#include "base/time/time.h"
-#include "net/base/net_export.h"
-#include "net/ssl/scoped_openssl_types.h"
-
-namespace base {
-class Clock;
-}
-
-namespace net {
-
-class NET_EXPORT SSLClientSessionCacheOpenSSL {
- public:
-  struct Config {
-    // The maximum number of entries in the cache.
-    size_t max_entries = 1024;
-    // The number of calls to Lookup before a new check for expired sessions.
-    size_t expiration_check_count = 256;
-    // How long each session should last.
-    base::TimeDelta timeout = base::TimeDelta::FromHours(1);
-  };
-
-  explicit SSLClientSessionCacheOpenSSL(const Config& config);
-  ~SSLClientSessionCacheOpenSSL();
-
-  size_t size() const;
-
-  // Returns the session associated with |cache_key| and moves it to the front
-  // of the MRU list. Returns nullptr if there is none.
-  ScopedSSL_SESSION Lookup(const std::string& cache_key);
-
-  // Inserts |session| into the cache at |cache_key|. If there is an existing
-  // one, it is released. Every |expiration_check_count| calls, the cache is
-  // checked for stale entries.
-  void Insert(const std::string& cache_key, SSL_SESSION* session);
-
-  // Removes all entries from the cache.
-  void Flush();
-
-  void SetClockForTesting(std::unique_ptr<base::Clock> clock);
-
- private:
-  struct CacheEntry {
-    CacheEntry();
-    ~CacheEntry();
-
-    ScopedSSL_SESSION session;
-    // The time at which this entry was created.
-    base::Time creation_time;
-  };
-
-  using CacheEntryMap =
-      base::HashingMRUCache<std::string, std::unique_ptr<CacheEntry>>;
-
-  // Returns true if |entry| is expired as of |now|.
-  bool IsExpired(CacheEntry* entry, const base::Time& now);
-
-  // Removes all expired sessions from the cache.
-  void FlushExpiredSessions();
-
-  std::unique_ptr<base::Clock> clock_;
-  Config config_;
-  CacheEntryMap cache_;
-  size_t lookups_since_flush_;
-
-  // TODO(davidben): After https://crbug.com/458365 is fixed, replace this with
-  // a ThreadChecker. The session cache should be single-threaded like other
-  // classes in net.
-  base::Lock lock_;
-
-  DISALLOW_COPY_AND_ASSIGN(SSLClientSessionCacheOpenSSL);
-};
-
-}  // namespace net
-
-#endif  // NET_SSL_SSL_CLIENT_SESSION_CACHE_OPENSSL_H