修复退出时可能崩溃的BUG

UNSWebServerCore/TempFileManager.h

@@ -1,12 +1,10 @@
 #pragma once
 #include <map>
 #include <string>
-#include <thread>
 #include <chrono>
+#include <memory>
 #include "Export.h"
-#include <shared_mutex>
 #include "WebFileInfo.h"
-#include <unordered_map>
 
 using std::chrono::operator""s;
 using std::chrono::operator""min;
@@ -14,26 +12,9 @@ using std::chrono::operator""min;
 class UNSWSC_DLL_EXPORT TempFileManager
 {
 private:
-	struct FileControlBlock
-	{
-		WebFileInfo info;
-		std::chrono::steady_clock::time_point expire_time;
-		std::chrono::steady_clock::time_point active_start_time;
-		std::chrono::seconds remaining_timeout;
-		std::chrono::seconds max_processing_timeout;
-		bool is_active = false;
-		bool is_permanent = false;                               // 是否永久保留
-		bool is_invalid = false;
-	};
+	class Impl;
 
-	std::string base_dir;
-	std::unordered_map<std::string, FileControlBlock> file_map;
-	mutable std::shared_mutex rw_mutex;
-
-	// C++20 jthread
-	std::jthread cleanup_thread;
-
-	void CleanupLoop(std::stop_token st) noexcept;
+	std::unique_ptr<Impl> pimpl;
 
 public:
 	TempFileManager() noexcept;