From: Mark Andrews <marka@isc.org>
Date: Mon, 18 Jun 2007 01:16:46 +0000 (+0000)
Subject: 2196.   [port]          win32: yield processor while waiting for once to
X-Git-Tag: v9.5.0a6~35
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f05a4bf2bfac3aaff0462560b2793cd99a85a297;p=thirdparty%2Fbind9.git

2196.   [port]          win32: yield processor while waiting for once to
                        to complete. [RT# 16958]
---

diff --git a/CHANGES b/CHANGES
index a2cd9b4d02a..8e363749f7f 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,6 @@
+2196.	[port]		win32: yield processor while waiting for once to
+			to complete. [RT# 16958]
+
 2195.	[func]		dnssec-keygen now defaults to nametype "ZONE"
 			when generating DNSKEYs. [RT #16954]
 
diff --git a/lib/isc/win32/once.c b/lib/isc/win32/once.c
index b38e38c415b..76dd82dfe4f 100644
--- a/lib/isc/win32/once.c
+++ b/lib/isc/win32/once.c
@@ -15,7 +15,7 @@
  * PERFORMANCE OF THIS SOFTWARE.
  */
 
-/* $Id: once.c,v 1.10 2004/03/05 05:11:58 marka Exp $ */
+/* $Id: once.c,v 1.11 2007/06/18 01:16:46 marka Exp $ */
 
 /* Principal Authors: DCL */
 
@@ -41,8 +41,11 @@ isc_once_do(isc_once_t *controller, void(*function)(void)) {
 		} else {
 			while (controller->status == ISC_ONCE_INIT_NEEDED) {
 				/*
-				 * Spin wait.
+				 * Sleep(0) indicates that this thread 
+				 * should be suspended to allow other 
+				 * waiting threads to execute.
 				 */
+				Sleep(0);
 			}
 		}
 	}