| // Copyright 2010-2014, Google Inc. |
| // All rights reserved. |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following disclaimer |
| // in the documentation and/or other materials provided with the |
| // distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived from |
| // this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| // Pool of Client instances, implemented with LRUCache. |
| |
| #ifndef MOZC_UNIX_EMACS_CLIENT_POOL_H_ |
| #define MOZC_UNIX_EMACS_CLIENT_POOL_H_ |
| |
| #include "base/linked_ptr.h" |
| #include "client/client.h" |
| #include "storage/lru_cache.h" |
| |
| namespace mozc { |
| namespace emacs { |
| |
| class ClientPool { |
| public: |
| typedef mozc::client::Client Client; |
| |
| ClientPool(); |
| virtual ~ClientPool() {} |
| |
| // Returns a new session ID, which is not used in this pool. |
| int CreateClient(); |
| |
| // Deletes a client. If the specified session ID is not in this pool, |
| // does nothing. |
| void DeleteClient(int id); |
| |
| // Returns a Client instance. If the specified session ID is not in this |
| // pool, creates a new Client and returns it. |
| linked_ptr<Client> GetClient(int id); |
| |
| private: |
| mozc::storage::LRUCache<int, linked_ptr<Client> > lru_cache_; |
| int next_id_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ClientPool); |
| }; |
| |
| } // namespace emacs |
| } // namespace mozc |
| |
| #endif // MOZC_UNIX_EMACS_CLIENT_POOL_H_ |