--- /dev/null
+/* -----------------------------------------------------------------------------
+ *
+ * (c) The GHC Team, 2001
+ * Author: Sungwoo Park
+ *
+ * Retainer profiling interface.
+ *
+ * ---------------------------------------------------------------------------*/
+
+#ifndef RETAINERPROFILE_H
+#define RETAINERPROFILE_H
+
+#ifdef PROFILING
+
+#include "RetainerSet.h"
+
+extern void initRetainerProfiling ( void );
+extern void endRetainerProfiling ( void );
+extern void printRetainer ( FILE *, retainer );
+extern void retainerProfile ( void );
+extern void resetStaticObjectForRetainerProfiling ( void );
+
+extern StgWord RTS_VAR(flip);
+
+// extract the retainer set field from c
+#define RSET(c) ((c)->header.prof.hp.rs)
+
+#define isRetainerSetFieldValid(c) \
+ ((((StgWord)(c)->header.prof.hp.rs & 1) ^ flip) == 0)
+
+static inline RetainerSet *
+retainerSetOf( StgClosure *c )
+{
+ ASSERT( isRetainerSetFieldValid(c) );
+ // StgWord has the same size as pointers, so the following type
+ // casting is okay.
+ return (RetainerSet *)((StgWord)RSET(c) ^ flip);
+}
+
+// Used by Storage.c:memInventory()
+#ifdef DEBUG
+extern lnat retainerStackBlocks ( void );
+#endif
+
+#endif /* PROFILING */
+
+#endif /* RETAINERPROFILE_H */