From 1922b5a9d9b2fb939334d4095ae139ded25d7e27 Mon Sep 17 00:00:00 2001
From: sof <unknown>
Date: Thu, 14 Jan 1999 18:36:18 +0000
Subject: [PATCH] [project @ 1999-01-14 18:36:18 by sof] added isEmptyMVarZh
macro
---
ghc/includes/PrimOps.h | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/ghc/includes/PrimOps.h b/ghc/includes/PrimOps.h
index 5a241b18a093..8bf3c3628c58 100644
--- a/ghc/includes/PrimOps.h
+++ b/ghc/includes/PrimOps.h
@@ -1,5 +1,5 @@
/* -----------------------------------------------------------------------------
- * $Id: PrimOps.h,v 1.4 1999/01/14 11:57:48 sewardj Exp $
+ * $Id: PrimOps.h,v 1.5 1999/01/14 18:36:18 sof Exp $
*
* Macros for primitive operations in STG-ish C code.
*
@@ -607,6 +607,9 @@ EF_(newMutVarZh_fast);
-------------------------------------------------------------------------- */
#define sameMVarZh(r,a,b) r=(I_)((a)==(b))
+
+/* Assume external decl of EMPTY_MVAR_info is in scope by now */
+#define isEmptyMVarZh(r,a) r=(I_)((GET_INFO((StgMVar*)(a))) == &EMPTY_MVAR_info )
EF_(newMVarZh_fast);
EF_(takeMVarZh_fast);
EF_(putMVarZh_fast);
--
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