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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 |
| 35 // |in_memory| is true). Call |callback| with a 0 argument on sucess and |
| 36 // <0 otherwise. |
| 37 int InitCache(const base::FilePath& cache_dir, |
| 38 bool in_memory, |
| 39 const CompletionCallback& callback); |
| 40 |
| 41 // Store the nexe in the translation cache. |
| 42 void StoreNexe(const std::string& key, const std::string& nexe); |
| 43 |
| 44 // Store the nexe in the translation cache, and call |callback| with |
| 45 // the result. The result passed to the callback is 0 on success and |
| 46 // <0 otherwise. |
| 47 void StoreNexe(const std::string& key, |
| 48 const std::string& nexe, |
| 49 const CompletionCallback& callback); |
| 50 |
| 51 // Retrieve the nexe from the translation cache. (Not implemented yet.) |
| 52 int GetNexe(const std::string& key, |
| 53 std::string* nexe, |
| 54 const CompletionCallback& callback); |
| 55 |
| 56 // Return the number of entries in the cache backend. |
| 57 int Size(); |
| 58 |
| 59 private: |
| 60 friend class PNaClTranslationCacheWriteEntry; |
| 61 // PNaClTranslationCacheWriteEntry should only use the |
| 62 // WriteComplete and backend methods on PNaClTranslationCache. |
| 63 void WriteComplete(PNaClTranslationCacheWriteEntry* entry); |
| 64 disk_cache::Backend* backend() { return disk_cache_; } |
| 65 |
| 66 int InitWithDiskBackend(const base::FilePath& disk_cache_dir, |
| 67 int cache_size, |
| 68 const CompletionCallback& callback); |
| 69 |
| 70 int InitWithMemBackend(int cache_size, const CompletionCallback& callback); |
| 71 |
| 72 int Init(net::CacheType, |
| 73 const base::FilePath& directory, |
| 74 int cache_size, |
| 75 const CompletionCallback& callback); |
| 76 |
| 77 void OnCreateBackendComplete(int rv); |
| 78 |
| 79 disk_cache::Backend* disk_cache_; |
| 80 CompletionCallback init_callback_; |
| 81 bool in_memory_; |
| 82 std::map<void*, scoped_refptr<PNaClTranslationCacheWriteEntry> > |
| 83 write_entries_; |
| 84 |
| 85 DISALLOW_COPY_AND_ASSIGN(PNaClTranslationCache); |
| 86 }; |
| 87 |
| 88 } // namespace pnacl_cache |
| 89 |
| 90 #endif // CHROME_BROWSER_NACL_HOST_PNACL_TRANSLATION_CACHE_H_ |
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