1 files changed, 32 insertions, 0 deletions
diff --git a/src/include/common_fwd.h b/src/include/common_fwd.h
new file mode 100644
index 000000000..d906aadfa
--- /dev/null
+++ b/src/include/common_fwd.h
@@ -0,0 +1,32 @@
+#pragma once
+
+#if defined(WITH_SEASTAR) && !defined(WITH_ALIEN)
+#define TOPNSPC crimson
+#else
+#define TOPNSPC ceph
+#endif
+
+namespace TOPNSPC::common {
+  class CephContext;
+  class PerfCounters;
+  class PerfCountersBuilder;
+  class PerfCountersCollection;
+  class PerfCountersCollectionImpl;
+  class PerfGuard;
+  class RefCountedObject;
+  class RefCountedObjectSafe;
+  class RefCountedCond;
+  class RefCountedWaitObject;
+  class ConfigProxy;
+}
+using TOPNSPC::common::CephContext;
+using TOPNSPC::common::PerfCounters;
+using TOPNSPC::common::PerfCountersBuilder;
+using TOPNSPC::common::PerfCountersCollection;
+using TOPNSPC::common::PerfCountersCollectionImpl;
+using TOPNSPC::common::PerfGuard;
+using TOPNSPC::common::RefCountedObject;
+using TOPNSPC::common::RefCountedObjectSafe;
+using TOPNSPC::common::RefCountedCond;
+using TOPNSPC::common::RefCountedWaitObject;
+using TOPNSPC::common::ConfigProxy;