fs_user: Add a delay for each file open

src/core/file_sys/archive_backend.h

@@ -12,6 +12,7 @@
 #include "common/common_types.h"
 #include "common/swap.h"
 #include "core/hle/result.h"
+#include "delay_generator.h"
 
 namespace FileSys {
 
@@ -153,6 +154,27 @@ public:
      * @return The number of free bytes in the archive
      */
     virtual u64 GetFreeBytes() const = 0;
+
+    u64 GetReadDelayNs(std::size_t length) {
+        if (delay_generator != nullptr) {
+            return delay_generator->GetReadDelayNs(length);
+        }
+        LOG_ERROR(Service_FS, "Delay generator was not initalized. Using default");
+        delay_generator = std::make_unique<DefaultDelayGenerator>();
+        return delay_generator->GetReadDelayNs(length);
+    }
+
+    u64 GetOpenDelayNs() {
+        if (delay_generator != nullptr) {
+            return delay_generator->GetOpenDelayNs();
+        }
+        LOG_ERROR(Service_FS, "Delay generator was not initalized. Using default");
+        delay_generator = std::make_unique<DefaultDelayGenerator>();
+        return delay_generator->GetOpenDelayNs();
+    }
+
+protected:
+    std::unique_ptr<DelayGenerator> delay_generator;
 };
 
 class ArchiveFactory : NonCopyable {