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Use single-layer directory structure for disk-tier #8

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Use single-layer directory structure for disk-tier #8

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7 changes: 3 additions & 4 deletions include/txn/base_store.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -263,8 +263,7 @@ template <typename K> class DiskLockNode {
*/
bool read_disk(const K &k) {
// Key not being used right now, check if stored in disk
string fname = ebs_root + std::to_string(thread_id) + "/" + k;
// TODO: create dir if DNE
string fname = ebs_root + std::to_string(thread_id) + "-" + k;
std::fstream f(fname, std::ios::in | std::ios::binary);
if (f) {
// Key exists on disk, read it into the map
Expand Down Expand Up @@ -300,7 +299,7 @@ template <typename K> class DiskLockNode {
// Write it back to disk

// TODO: create dir if DNE
string fname = ebs_root + std::to_string(thread_id) + "/" + k;
string fname = ebs_root + std::to_string(thread_id) + "-" + k;
std::fstream f(fname, std::ios::out | std::ios::binary);
f << db.at(k).get_is_primary() << "\n" << db.at(k).reveal() << "\n";
f.close();
Expand Down Expand Up @@ -431,7 +430,7 @@ template <typename K> class DiskLockNode {

void remove(const K &k) {
db.erase(k);
std::remove((ebs_root + "/" + std::to_string(thread_id) + "/" + k).c_str());
std::remove((ebs_root + std::to_string(thread_id) + "-" + k).c_str());
}
};

Expand Down