neorados/fifo: Rewrite as proper I/O object

Split nominal handle object and reference-counted
implementation. While we're at it, add lazy-open functionality.

Signed-off-by: Adam C. Emerson <[email protected]>

Author: adamemerson

src/cls/fifo/cls_fifo_types.h

@@ -610,4 +610,8 @@ template<>
 struct fmt::formatter<rados::cls::fifo::info> : fmt::ostream_formatter {};
 template<>
 struct fmt::formatter<rados::cls::fifo::part_header> : fmt::ostream_formatter {};
+template<>
+struct fmt::formatter<rados::cls::fifo::journal_entry> : fmt::ostream_formatter {};
+template<>
+struct fmt::formatter<rados::cls::fifo::update> : fmt::ostream_formatter {};
 #endif

src/neorados/cls/common.h

@@ -12,7 +12,6 @@
 #pragma once
 
 #include <concepts>
-#include <coroutine>
 #include <cstddef>
 #include <string>
 #include <type_traits>
@@ -35,6 +34,10 @@
 #include "include/buffer.h"
 #include "include/encoding.h"
 
+#if !defined(__clang__) && defined(__GNUC__) && (__GNUC__ < 13)
+#define BROKEN_CO_COMPOSED
+#endif
+
 /// \file neorados/cls/common.h
 ///
 /// \brief Helpers for writing simple CLS clients