libcryfs/implementations/caching2/Caching2BlockStore.cpp

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#include "Caching2BlockStore.h"
#include "../../interface/Block.h"
using std::unique_ptr;
namespace blockstore {
namespace caching2 {
Caching2BlockStore::Caching2BlockStore(std::unique_ptr<BlockStore> baseBlockStore)
:_baseBlockStore(std::move(baseBlockStore)) {
}
unique_ptr<Block> Caching2BlockStore::create(size_t size) {
//TODO Also cache this and only write back in the destructor?
// When writing back is done efficiently in the base store (e.g. only one safe-to-disk, not one in the create() and then one in the save(), this is not supported by the current BlockStore interface),
// then the base store could actually directly create a block in the create() call, OnDiskBlockStore wouldn't have to avoid file creation in the create() call for performance reasons and I could also adapt the OnDiskBlockStore test cases and remove a lot of flush() calls there because then blocks are loadable directly after the create call() without a flush.
// Currently, OnDiskBlockStore doesn't create new blocks directly but only after they're destructed (performance reasons), but this means a newly created block can't be loaded directly.
return _baseBlockStore->create(size);
}
unique_ptr<Block> Caching2BlockStore::load(const Key &key) {
return _baseBlockStore->load(key);
}
void Caching2BlockStore::remove(std::unique_ptr<Block> block) {
return _baseBlockStore->remove(std::move(block));
}
uint64_t Caching2BlockStore::numBlocks() const {
return _baseBlockStore->numBlocks();
}
}
}