Changeset 81905 in vbox

Timestamp:

Nov 17, 2019 3:04:33 PM (5 years ago)

Author:

vboxsync

Message:

iprt/cdefs.h: Added a CTX_EXPR(a_R3Expr, a_R0Expr, a_RCExpr) macro for avoiding #ifdefs. bugref:9218

File:

• trunk/include/iprt/cdefs.h (modified) (1 diff)

trunk/include/iprt/cdefs.h

@@ -724 +724 @@
 #else
 # define CTXTYPE(GCType, R3Type, R0Type)  R0Type
+#endif
+
+/** @def CTX_EXPR
+ * Expression selector for avoiding \#ifdef's.
+ *
+ * @param   a_R3Expr    The R3 expression.
+ * @param   a_R0Expr    The R0 expression.
+ * @param   a_RCExpr    The RC expression.
+ */
+#if defined(IN_RC) && !defined(DOXYGEN_RUNNING)
+# define CTX_EXPR(a_R3Expr, a_R0Expr, a_RCExpr)  a_RCExpr
+#elif defined(IN_RING0) && !defined(DOXYGEN_RUNNING)
+# define CTX_EXPR(a_R3Expr, a_R0Expr, a_RCExpr)  a_R0Expr
+#else
+# define CTX_EXPR(a_R3Expr, a_R0Expr, a_RCExpr)  a_R3Expr
 #endif