From c7f7f134a7e2ee14d07d16d96c7849c6fd310693 Mon Sep 17 00:00:00 2001
From: Jeff Darcy <jdarcy@redhat.com>
Date: Tue, 16 Oct 2012 14:21:17 -0400
Subject: core: add STACK_WIND_TAIL for more efficient default_xxx.

Change-Id: Ic38e2183d1320bb17c014aca33779471c8db5d5f
BUG: 867132
Signed-off-by: Jeff Darcy <jdarcy@redhat.com>
Reviewed-on: http://review.gluster.org/4092
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
---
 libglusterfs/src/stack.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'libglusterfs/src/stack.h')

diff --git a/libglusterfs/src/stack.h b/libglusterfs/src/stack.h
index 63307192ae5..b14b08dbb9a 100644
--- a/libglusterfs/src/stack.h
+++ b/libglusterfs/src/stack.h
@@ -254,6 +254,20 @@ STACK_RESET (call_stack_t *stack)
         } while (0)
 
 
+/* make a call without switching frames */
+#define STACK_WIND_TAIL(frame, obj, fn, params ...)                     \
+        do {                                                            \
+                xlator_t     *old_THIS = NULL;                          \
+                                                                        \
+                frame->this = obj;                                      \
+                frame->wind_to = #fn;                                   \
+                old_THIS = THIS;                                        \
+                THIS = obj;                                             \
+                fn (frame, obj, params);                                \
+                THIS = old_THIS;                                        \
+        } while (0)
+
+
 /* make a call with a cookie */
 #define STACK_WIND_COOKIE(frame, rfn, cky, obj, fn, params ...)         \
         do {                                                            \
-- 
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