Made assets::data_stores thread safe.

include/util/vector_replace_range.hpp

@@ -0,0 +1,33 @@
+#pragma once
+
+
+#include <algorithm>
+#include <vector>
+
+namespace ztu
+{
+
+template<class T, class Allocator, class InputIt>
+void replace_range(
+	std::vector<T, Allocator>& dst,
+	typename std::vector<T, Allocator>::iterator dst_begin,
+	typename std::vector<T, Allocator>::iterator dst_end,
+	InputIt src_begin,
+	InputIt src_end
+) {
+	const auto dst_size = std::distance(dst_begin, dst_end);
+	const auto src_size = std::distance(src_begin, src_end);
+
+	if (dst_size < src_size)
+	{
+		dst.insert(dst_end, src_begin + dst_size, src_end);
+	}
+	else if (dst_size > src_size)
+	{
+		dst.erase(dst_begin + src_size, dst_end);
+	}
+
+	std::copy_n(src_begin, std::min(src_size, dst_size), dst_begin);
+}
+
+}