From 0f220ecae921f961f0c40395218de86cc2b33849 Mon Sep 17 00:00:00 2001
From: Graydon Hoare <graydon@mozilla.com>
Date: Thu, 22 Jul 2010 15:05:35 -0700
Subject: Beat up on the preempt test a bit more, as it keeps hanging under
 valgrind.

---
 src/rt/rust_internal.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'src/rt/rust_internal.h')

diff --git a/src/rt/rust_internal.h b/src/rt/rust_internal.h
index d962e894..99f52165 100644
--- a/src/rt/rust_internal.h
+++ b/src/rt/rust_internal.h
@@ -67,6 +67,17 @@ struct frame_glue_fns;
 
 static size_t const TIME_SLICE_IN_MS = 10;
 
+// This helps our preemption scheme handle "running on valgrind".
+
+#if defined(__WIN32__)
+#define YIELD_C_THREAD_IF_ON_VALGRIND (void);
+#else
+#define YIELD_C_THREAD_IF_ON_VALGRIND  \
+    if (RUNNING_ON_VALGRIND) {         \
+        pthread_yield();               \
+    }
+#endif
+
 // Every reference counted object should derive from this base class.
 
 template <typename T>
-- 
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