further optimize compile

CMakeLists.txt

@@ -37,6 +37,7 @@ add_definitions(-DZSTD_STATIC_LINKING_ONLY)
 option(ENABLE_ADVANCED_FEATURE "Enable advanced features" OFF)
 option(OJ_TEST_BPT "Enable OJ test for B+ Tree" OFF)
 option(OJ_TEST_BACKEND "Enable OJ test for backend" ON)
+option(ENABLE_TEST_POINTS "Enable test points" OFF)
 
 # 如果 ENABLE_ADVANCED_FEATURE 选项为 ON，则定义 ENABLE_ADVANCED_FEATURE 宏
 if (ENABLE_ADVANCED_FEATURE)
@@ -45,6 +46,7 @@ endif()
 
 include(FetchContent)
 
+if(ENABLE_TEST_POINTS)
   FetchContent_Declare(
     googletest
     URL_HASH SHA256=1f357c27ca988c3f7c6b4bf68a9395005ac6761f034046e9dde0896e3aba00e4
@@ -52,6 +54,7 @@ FetchContent_Declare(
   )
   FetchContent_MakeAvailable(googletest)
   include(GoogleTest)
+endif()
 
 FetchContent_Declare(
   argparse
@@ -67,14 +70,15 @@ FetchContent_Declare(
 )
 FetchContent_MakeAvailable(spdlog)
 
+
+
+if(ENABLE_ADVANCED_FEATURE)
   FetchContent_Declare(
     sockpp
     URL_HASH SHA256=d144b3dcc7e9f031a9205395deb334b0b9681e1e7db61c066cca22ec2650a77b
     URL ${CMAKE_SOURCE_DIR}/deps/sockpp-v1.0.0-mirror.zip
   )
   FetchContent_MakeAvailable(sockpp)
-
-if(ENABLE_ADVANCED_FEATURE)
   FetchContent_Declare(
     zstd
     URL_HASH SHA256=3b1c3b46e416d36931efd34663122d7f51b550c87f74de2d38249516fe7d8be5

src/CMakeLists.txt

@@ -6,9 +6,9 @@ endif()
 add_executable(${BACKEND_EXETUABLE_NAME} main.cpp engine.cpp utils.cpp data.cpp user_system.cpp train_system.cpp transaction_system.cpp)
 target_link_libraries(${BACKEND_EXETUABLE_NAME} argparse)
 target_link_libraries(${BACKEND_EXETUABLE_NAME} spdlog::spdlog)
-target_link_libraries(${BACKEND_EXETUABLE_NAME} sockpp)
 target_link_libraries(${BACKEND_EXETUABLE_NAME} storage)
 if(ENABLE_ADVANCED_FEATURE)
+  target_link_libraries(${BACKEND_EXETUABLE_NAME} sockpp)
   target_link_libraries(${BACKEND_EXETUABLE_NAME} dataguard)
 endif()
 set_target_properties(${BACKEND_EXETUABLE_NAME} PROPERTIES RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})

src/include/data.h

@@ -11,23 +11,24 @@ struct FullUserData {
   uint8_t privilege;
 };
 
+struct StationNameData {
+  char name[100][40];
+};
+static_assert(sizeof(StationNameData) == 4000);
+
 // waring: this struct is extremely large, later DiskManager should be optimized to handle this
 struct FullTrainData {
   char trainID[21];
   uint8_t stationNum;
-  // char stations[100][41];
   hash_t stations_hash[100];
   uint32_t seatNum : 18;
   uint16_t startTime : 12;
   uint16_t saleDate_beg : 10, saleDate_end : 10;
   uint8_t type : 6;
-  struct StationData {
-    uint32_t price : 18;
-    uint16_t travelTime : 15;
-    uint16_t stopoverTime : 15;
-  };
-  StationData stations[100];
+  uint16_t travelTime[100];
+  uint16_t stopoverTime[100];
 };
+struct TicketPriceData {};
 
 class TrainDataDrive : public DataDriverBase {};
 

src/include/engine.h

@@ -16,14 +16,42 @@ class TicketSystemEngine {
 #endif
   std::string data_directory;
   std::map<hash_t, uint8_t> online_users;
+
+  /**
+   * @brief user data system
+   * @details The database for users.
+   */
   DiskMap<hash_t, FullUserData> user_data;
+
+  /**
+   * @brief train data system
+   */
+  DiskMap<hash_t, StationNameData> full_station_name_data;
+
+  /**
+   * @brief transaction data system
+   * @details This part is responsible for storing:
+   * - Remaining seat numbers: using HashedTrainID + train number as the index, with a B+ tree point to an array
+   * - Stop information: using the station + HashedTrainID as the index, with a B+ tree point to the train's sales start
+   * and end dates, minutes required from the starting station to the current station, and the current station's stop
+   * time
+   * - Order information: using an incrementing, non-repeating uint64_t as the index, with an OrderData attached
+   * - Waiting queue: using the station + HashedTrainID as the index, with a B+ tree point to a LinkedQueue, storing IDs
+   * pointing to order information
+   * - User purchase history: using HashedUserID as the index, with a LinkedStack attached, with a simple skip list-like
+   * optimization, storing IDs pointing to order information
+   */
+  // TODO
+
   void PrepareExit();
 
  public:
   inline TicketSystemEngine(std::string data_directory)
       : data_directory(data_directory),
         user_data("user_data.idx", data_directory + "/user_data.idx", "user_data.val",
-                  data_directory + "/user_data.val") {}
+                  data_directory + "/user_data.val"),
+        full_station_name_data("station_name.idx", data_directory + "/station_name.idx", "station_name.val",
+                               data_directory + "/station_name.val") {}
   std::string Execute(const std::string &command);
 
   // User system

src/main.cpp

@@ -1,8 +1,8 @@
-#include <sockpp/tcp_acceptor.h>
 #include <cassert>
 #include <exception>
 #include "basic_defs.h"
 #ifdef ENABLE_ADVANCED_FEATURE
+#include <sockpp/tcp_acceptor.h>
 #include "dataguard/dataguard.h"
 #endif
 #include "engine.h"

test/CMakeLists.txt

@@ -3,6 +3,7 @@ if(OJ_TEST_BPT)
   target_link_libraries(code storage)
   set_target_properties(code PROPERTIES RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})
 endif()
+if(ENABLE_TEST_POINTS)
   add_executable(replacer_test replacer_test.cpp)
   target_link_libraries(replacer_test storage GTest::gtest_main)
   add_executable(buffer_pool_manager_test buffer_pool_manager_test.cpp)
@@ -25,3 +26,4 @@ if(ENABLE_ADVANCED_FEATURE)
   endif()
   add_executable(hash_collision_test hash_collision_test.cpp)
   add_executable(utils_test utils_test.cpp)
+endif()