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| 1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #ifndef CHROME_BROWSER_NACL_HOST_PNACL_TRANSLATION_CACHE_H_ |
| 6 #define CHROME_BROWSER_NACL_HOST_PNACL_TRANSLATION_CACHE_H_ |
| 7 |
| 8 #include <map> |
| 9 |
| 10 #include "base/callback.h" |
| 11 #include "base/files/file_path.h" |
| 12 #include "base/memory/weak_ptr.h" |
| 13 #include "net/base/cache_type.h" |
| 14 |
| 15 namespace base { |
| 16 class MessageLoopProxy; |
| 17 } |
| 18 |
| 19 namespace disk_cache { |
| 20 class Backend; |
| 21 } |
| 22 |
| 23 namespace pnacl_cache { |
| 24 typedef base::Callback<void(int)> CompletionCallback; |
| 25 class PNaClTranslationCacheWriteEntry; |
| 26 extern const int kMaxMemCacheSize; |
| 27 |
| 28 class PNaClTranslationCache |
| 29 : public base::SupportsWeakPtr<PNaClTranslationCache> { |
| 30 public: |
| 31 PNaClTranslationCache(); |
| 32 virtual ~PNaClTranslationCache(); |
| 33 |
| 34 // Initialize the translation cache in cache_dir (or in memory if in_memory |
| 35 // is true). Call callback with a 0 argument on sucess and <0 otherwise. |
| 36 int InitCache(const base::FilePath& cache_dir, |
| 37 bool in_memory, |
| 38 const CompletionCallback& callback); |
| 39 |
| 40 // Store the nexe in the translation cache. |
| 41 void StoreNexe(const std::string& key, const std::string& nexe); |
| 42 // Store the nexe in the translation cache, and call the callback with |
| 43 // the result. The result passed to the callback is 0 on success and |
| 44 // <0 otherwise. |
| 45 void StoreNexe(const std::string& key, |
| 46 const std::string& nexe, |
| 47 const CompletionCallback& callback); |
| 48 // Retrieve the nexe from the translation cache. (Not implemented yet.) |
| 49 int GetNexe(const std::string& key, |
| 50 std::string* nexe, |
| 51 const CompletionCallback& callback); |
| 52 // Return the number of entries in the cache backend. |
| 53 int Size(); |
| 54 |
| 55 private: |
| 56 friend class PNaClTranslationCacheWriteEntry; |
| 57 // PNaClTranslationCacheWriteEntry should only use the |
| 58 // WriteComplete and backend methods on PNaClTranslationCache. |
| 59 void WriteComplete(PNaClTranslationCacheWriteEntry* entry); |
| 60 disk_cache::Backend* backend() { return disk_cache_; } |
| 61 |
| 62 int InitWithDiskBackend(const base::FilePath& disk_cache_dir, |
| 63 int cache_size, |
| 64 const CompletionCallback& callback); |
| 65 |
| 66 int InitWithMemBackend(int cache_size, const CompletionCallback& callback); |
| 67 |
| 68 int Init(net::CacheType, |
| 69 const base::FilePath& directory, |
| 70 int cache_size, |
| 71 const CompletionCallback& callback); |
| 72 |
| 73 void OnCreateBackendComplete(int rv); |
| 74 |
| 75 disk_cache::Backend* disk_cache_; |
| 76 CompletionCallback init_callback_; |
| 77 bool in_memory_; |
| 78 std::map<void*, scoped_refptr<PNaClTranslationCacheWriteEntry> > |
| 79 write_entries_; |
| 80 |
| 81 DISALLOW_COPY_AND_ASSIGN(PNaClTranslationCache); |
| 82 }; |
| 83 |
| 84 } // namespace pnacl_cache |
| 85 |
| 86 #endif // CHROME_BROWSER_NACL_HOST_PNACL_TRANSLATION_CACHE_H_ |
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