git.sesse.net Git - plocate/blob - access_rx_cache.h

   1 #ifndef _ACCESS_RX_CACHE_H
   2 #define _ACCESS_RX_CACHE_H 1
   3
   4 #include <functional>
   5 #include <map>
   6 #include <mutex>
   7 #include <string>
   8 #include <unordered_map>
   9 #include <vector>
  10
  11 class IOUringEngine;
  12
  13 class AccessRXCache {
  14 public:
  15         AccessRXCache(IOUringEngine *engine, bool check_visibility)
  16                 : engine(engine), check_visibility(check_visibility) {}
  17         void check_access(const char *filename, bool allow_async, std::function<void(bool)> cb);
  18
  19 private:
  20         std::unordered_map<std::string, bool> cache;
  21         struct PendingStat {
  22                 std::string filename;
  23                 std::function<void(bool)> cb;
  24         };
  25         std::map<std::string, std::vector<PendingStat>> pending_stats;
  26         IOUringEngine *engine;
  27         std::mutex mu;
  28         bool check_visibility;
  29 };
  30
  31 #endif  // !defined(_ACCESS_RX_CACHE_H)