make it possible to close memmapped file before dctor

openVulkanoCpp/IO/MemMappedFile.cpp

@@ -18,4 +18,9 @@ namespace OpenVulkano
 		m_data = m_internal->address;
 		m_size = (m_data) ? m_internal->size : 0;
 	}
+
+	void MemMappedFile::Close()
+	{
+		m_internal->Close();
+	}
 }

openVulkanoCpp/IO/MemMappedFile.hpp

@@ -38,5 +38,7 @@ namespace OpenVulkano
 		[[nodiscard]] size_t Size() const { return m_size; }
 
 		[[nodiscard]] void* Data() const { return m_data; }
+
+		void Close();
 	};
 }

openVulkanoCpp/IO/MemMappedFileInternal.cpp

@@ -90,11 +90,20 @@ namespace OpenVulkano
 		}
 	}
 
-	MemMappedFileInternal::~MemMappedFileInternal()
+	void MemMappedFileInternal::Close()
 	{
 		UnmapViewOfFile(address);
 		CloseHandle(fileMappingHandle);
 		CloseHandle(fileHandle);
+		closed = true;
+	}
+
+	MemMappedFileInternal::~MemMappedFileInternal()
+	{
+		if (!closed)
+		{
+			Close();
+		}
 	}
 #else
 	MemMappedFileInternal::MemMappedFileInternal(const char* file, MemMappedFile::FileMode fileMode)
@@ -114,10 +123,19 @@ namespace OpenVulkano
 		size = fileStat.st_size;
 	}
 
-	MemMappedFileInternal::~MemMappedFileInternal()
+	void MemMappedFileInternal::Close()
 	{
 		munmap(address, fileStat.st_size);
 		close(fileHandle);
+		closed = true;
+	}
+
+	MemMappedFileInternal::~MemMappedFileInternal()
+	{
+		if (!closed)
+		{
+			Close();
+		}
 	}
 #endif
 

openVulkanoCpp/IO/MemMappedFileInternal.hpp

@@ -34,10 +34,12 @@ namespace OpenVulkano
 #else
 		[[nodiscard]] bool InvalidHandle() const { return fileHandle == -1; }
 #endif
+		void Close();
 
 	private:
 		void* address = nullptr;
 		size_t size = 0;
+		bool closed = false;
 
 #ifdef _MSC_VER
 		HANDLE fileHandle;