| 1 | #ifndef ODB_SOURCE_INMEMORY_H |
| 2 | #define ODB_SOURCE_INMEMORY_H |
| 3 | |
| 4 | #include "odb/source.h" |
| 5 | |
| 6 | struct oidtree; |
| 7 | |
| 8 | /* |
| 9 | * An in-memory source that you can write objects to that shall be made |
| 10 | * available for reading, but that shouldn't ever be persisted to disk. Note |
| 11 | * that any objects written to this source will be stored in memory, so the |
| 12 | * number of objects you can store is limited by available system memory. |
| 13 | */ |
| 14 | struct odb_source_inmemory { |
| 15 | struct odb_source base; |
| 16 | struct oidtree *objects; |
| 17 | }; |
| 18 | |
| 19 | /* Create a new in-memory object database source. */ |
| 20 | struct odb_source_inmemory *odb_source_inmemory_new(struct object_database *odb); |
| 21 | |
| 22 | /* |
| 23 | * Cast the given object database source to the in-memory backend. This will |
| 24 | * cause a BUG in case the source doesn't use this backend. |
| 25 | */ |
| 26 | static inline struct odb_source_inmemory *odb_source_inmemory_downcast(struct odb_source *source) |
| 27 | { |
| 28 | if (source->type != ODB_SOURCE_INMEMORY) |
| 29 | BUG("trying to downcast source of type '%s' to '%s'", |
| 30 | odb_source_type_to_name(source->type), |
| 31 | odb_source_type_to_name(ODB_SOURCE_INMEMORY)); |
| 32 | return container_of(source, struct odb_source_inmemory, base); |
| 33 | } |
| 34 | |
| 35 | #endif |