From b618827fac84ca12a354da5808f30e96bedbc92a Mon Sep 17 00:00:00 2001
From: Micah Dowty <micah@vmware.com>
Date: Fri, 24 Apr 2009 23:45:16 +0200
Subject: util: Add debug_printf_once

---
 src/gallium/auxiliary/util/u_debug.h | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

(limited to 'src')

diff --git a/src/gallium/auxiliary/util/u_debug.h b/src/gallium/auxiliary/util/u_debug.h
index bcd8f0f3cf..d42b65ce28 100644
--- a/src/gallium/auxiliary/util/u_debug.h
+++ b/src/gallium/auxiliary/util/u_debug.h
@@ -102,6 +102,22 @@ debug_printf(const char *format, ...)
 }
 
 
+/*
+ * ... isn't portable so we need to pass arguments in parentheses.
+ *
+ * usage:
+ *    debug_printf_once(("awnser: %i\n", 42));
+ */
+#define debug_printf_once(args) \
+   do { \
+      static boolean once = TRUE; \
+      if (once) { \
+         once = FALSE; \
+         debug_printf args; \
+      } \
+   } while (0)
+
+
 #ifdef DEBUG
 #define debug_vprintf(_format, _ap) _debug_vprintf(_format, _ap)
 #else
-- 
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