57 lines
1.4 KiB
C++
57 lines
1.4 KiB
C++
#include "InMemoryBlock.h"
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#include "InMemoryBlockStore.h"
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#include <memory>
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using std::unique_ptr;
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using std::make_unique;
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using std::string;
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using std::mutex;
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using std::lock_guard;
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using std::piecewise_construct;
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using std::make_tuple;
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using cpputils::Data;
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using cpputils::unique_ref;
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using cpputils::make_unique_ref;
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using boost::optional;
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using boost::none;
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namespace blockstore {
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namespace inmemory {
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InMemoryBlockStore::InMemoryBlockStore()
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: _blocks() {}
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optional<unique_ref<Block>> InMemoryBlockStore::tryCreate(const Key &key, Data data) {
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auto insert_result = _blocks.emplace(piecewise_construct, make_tuple(key.ToString()), make_tuple(key, std::move(data)));
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if (!insert_result.second) {
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return none;
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}
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//Return a pointer to the stored InMemoryBlock
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return optional<unique_ref<Block>>(make_unique_ref<InMemoryBlock>(insert_result.first->second));
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}
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unique_ptr<Block> InMemoryBlockStore::load(const Key &key) {
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//Return a pointer to the stored InMemoryBlock
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try {
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return make_unique<InMemoryBlock>(_blocks.at(key.ToString()));
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} catch (const std::out_of_range &e) {
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return nullptr;
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}
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}
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void InMemoryBlockStore::remove(unique_ptr<Block> block) {
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Key key = block->key();
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block.reset();
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int numRemoved = _blocks.erase(key.ToString());
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assert(1==numRemoved);
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}
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uint64_t InMemoryBlockStore::numBlocks() const {
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return _blocks.size();
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}
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}
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}
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