Copies of image files, kept where they are faster to reach than the files themselves. More...
#include <vitrio/image_scratch.hpp>
Inheritance diagram for vitrio::image_scratch:
Public Member Functions | |
| image_scratch (const image_scratch &other)=delete | |
| image_scratch (image_scratch &&other)=delete | |
| image_scratch & | operator= (const image_scratch &other)=delete |
| image_scratch & | operator= (image_scratch &&other)=delete |
| virtual std::shared_ptr< image_scratch_entry > | find (const std::string &key)=0 |
| Get what is held of a file, to read it and to add to it. | |
Detailed Description
Copies of image files, kept where they are faster to reach than the files themselves.
A scratch holds one image_scratch_entry for each file it keeps something of, and finds it by the key of that file. What an entry keeps of its file is the entry's implementation's own business.
- Thread safety
- Every method may be called concurrently.
Member Function Documentation
◆ find()
|
pure virtual |
Get what is held of a file, to read it and to add to it.
Shared ownership rather than a reference, so that an entry stays alive for as long as it is still read through.
- Parameters
-
key Key of the file.
- Returns
- std::shared_ptr<image_scratch_entry> The entry of the file, or null when nothing of it is held.
Implemented in vitrio::indexed_image_scratch.
The documentation for this class was generated from the following file:
- vitrio/image_scratch.hpp
