Add support for easily declaring static inline functions

We already had those, but they forced modules to spell out the function
bodies twice.  Eliminate some duplicates we had already grown.

Extracted from a somewhat larger patch from Andres Freund.

1 files changed, 18 insertions, 0 deletions

diff --git a/src/include/c.h b/src/include/c.h
index 127b5d94e3c..925d9617af4 100644
--- a/src/include/c.h
+++ b/src/include/c.h
@@ -748,6 +748,24 @@ typedef NameData *Name;
 #endif /* HAVE__BUILTIN_TYPES_COMPATIBLE_P */
 
 
+/*
+ * Function inlining support -- Allow modules to define functions that may be
+ * inlined, if the compiler supports it.
+ *
+ * The function bodies must be defined in the module header prefixed by
+ * STATIC_IF_INLINE, protected by a cpp symbol that the module's .c file must
+ * define.  If the compiler doesn't support inline functions, the function
+ * definitions are pulled in by the .c file as regular (not inline) symbols.
+ *
+ * The header must also declare the functions' prototypes, protected by
+ * !USE_INLINE.
+ */
+#ifdef USE_INLINE
+#define STATIC_IF_INLINE static inline
+#else
+#define STATIC_IF_INLINE
+#endif	/* USE_INLINE */
+
 /* ----------------------------------------------------------------
  *				Section 7:	random stuff
  * ----------------------------------------------------------------