The Tor Browser / file comparison
comparison: browser/components/translation/cld2/internal/cld2_dynamic_data_loader.h
browser/components/translation/cld2/internal/cld2_dynamic_data_loader.h
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| 1 // Copyright 2014 Google Inc. All Rights Reserved. | |
| 2 // | |
| 3 // Licensed under the Apache License, Version 2.0 (the "License"); | |
| 4 // you may not use this file except in compliance with the License. | |
| 5 // You may obtain a copy of the License at | |
| 6 // | |
| 7 // http://www.apache.org/licenses/LICENSE-2.0 | |
| 8 // | |
| 9 // Unless required by applicable law or agreed to in writing, software | |
| 10 // distributed under the License is distributed on an "AS IS" BASIS, | |
| 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 12 // See the License for the specific language governing permissions and | |
| 13 // limitations under the License. | |
| 14 | |
| 15 #ifndef CLD2_INTERNAL_CLD2_DYNAMIC_DATA_LOADER_H_ | |
| 16 #define CLD2_INTERNAL_CLD2_DYNAMIC_DATA_LOADER_H_ | |
| 17 | |
| 18 #include "scoreonescriptspan.h" | |
| 19 #include "cld2_dynamic_data.h" | |
| 20 | |
| 21 namespace CLD2DynamicDataLoader { | |
| 22 | |
| 23 // Read a header from the specified file and return it. | |
| 24 // The header returned is dynamically allocated; you must 'delete' the array | |
| 25 // of TableHeaders as well as the returned FileHeader* when done. | |
| 26 CLD2DynamicData::FileHeader* loadHeader(const char* fileName); | |
| 27 | |
| 28 // Load data directly into a ScoringTables structure using a private, read-only | |
| 29 // mmap and return the newly-allocated structure. | |
| 30 // The out-parameter "mmapAddressOut" is a pointer to a void*; the starting | |
| 31 // address of the mmap()'d block will be written here. | |
| 32 // The out-parameter "mmapLengthOut" is a pointer to an int; the length of the | |
| 33 // mmap()'d block will be written here. | |
| 34 // It is up to the caller to delete | |
| 35 CLD2::ScoringTables* loadDataFile(const char* fileName, | |
| 36 void** mmapAddressOut, int* mmapLengthOut); | |
| 37 | |
| 38 // Given pointers to the data from a previous invocation of loadDataFile, | |
| 39 // unloads the data safely - freeing and deleting any malloc'd/new'd objects. | |
| 40 // When this method returns, the mmap has been deleted, as have all the scoring | |
| 41 // tables; the pointers passed in are all zeroed, such that: | |
| 42 // *scoringTables == NULL | |
| 43 // *mmapAddress == NULL | |
| 44 // mmapLength == NULL | |
| 45 // This is the only safe way to unload data that was previously loaded, as there | |
| 46 // is an unfortunate mixture of new and malloc involved in building the | |
| 47 // in-memory represtation of the data. | |
| 48 void unloadData(CLD2::ScoringTables** scoringTables, | |
| 49 void** mmapAddress, int* mmapLength); | |
| 50 | |
| 51 } // End namespace CLD2DynamicDataExtractor | |
| 52 #endif // CLD2_INTERNAL_CLD2_DYNAMIC_DATA_EXTRACTOR_H_ |
