+
+struct Time {
+ void restart() { system_time(&t); }
+ uint64_t msec() const { return time_to_msec(t); }
+ int elapsed() const { return int(current_time().msec() - time_to_msec(t)); }
+
+ static Time current_time() { Time t; t.restart(); return t; }
+
+private:
+ sys_time_t t;
+};
+
+
+template<class Entry, int Size>
+struct HashTable {
+ HashTable() : e(Size, Entry()) { memset(&e[0], 0, sizeof(Entry) * Size); }
+ Entry* operator[](Key k) { return &e[(uint32_t)k & (Size - 1)]; }
+
+private:
+ std::vector<Entry> e;
+};
+