From 502b55c20b019782171fd4c6c6351ec958baccc6 Mon Sep 17 00:00:00 2001
From: das <das@FreeBSD.org>
Date: Sat, 21 Jun 2003 08:20:14 +0000
Subject: Userland spinlocks bad.  Sleep locks good. Use the latter for gdtoa.

Requested by:	deischen (far too long ago)
---
 contrib/gdtoa/gdtoaimp.h | 19 +++++++++++--------
 lib/libc/gdtoa/glue.c    |  7 +++++--
 2 files changed, 16 insertions(+), 10 deletions(-)

diff --git a/contrib/gdtoa/gdtoaimp.h b/contrib/gdtoa/gdtoaimp.h
index 3048656..0c4a936 100644
--- a/contrib/gdtoa/gdtoaimp.h
+++ b/contrib/gdtoa/gdtoaimp.h
@@ -188,7 +188,10 @@ THIS SOFTWARE.
 #include "stdlib.h"
 #include "string.h"
 #include "libc_private.h"
-#include "spinlock.h"
+
+#include "namespace.h"
+#include <pthread.h>
+#include "un-namespace.h"
 
 #ifdef KR_headers
 #define Char char
@@ -465,14 +468,14 @@ extern double rnd_prod(double, double), rnd_quot(double, double);
 #endif
 
 #define MULTIPLE_THREADS
-extern spinlock_t __gdtoa_locks[2];
-#define ACQUIRE_DTOA_LOCK(n)	do {		\
-	if (__isthreaded)			\
-		_SPINLOCK(&__gdtoa_locks[n]);	\
+extern pthread_mutex_t __gdtoa_locks[2];
+#define ACQUIRE_DTOA_LOCK(n)	do {				\
+	if (__isthreaded)					\
+		_pthread_mutex_lock(&__gdtoa_locks[n]);		\
 } while(0)
-#define FREE_DTOA_LOCK(n)	do {		\
-	if (__isthreaded)			\
-		_SPINUNLOCK(&__gdtoa_locks[n]);	\
+#define FREE_DTOA_LOCK(n)	do {				\
+	if (__isthreaded)					\
+		_pthread_mutex_unlock(&__gdtoa_locks[n]);	\
 } while(0)
 
 #define Kmax 15
diff --git a/lib/libc/gdtoa/glue.c b/lib/libc/gdtoa/glue.c
index b587412..39e491a 100644
--- a/lib/libc/gdtoa/glue.c
+++ b/lib/libc/gdtoa/glue.c
@@ -5,6 +5,9 @@
  * $FreeBSD$
  */
 
-#include "spinlock.h"
+#include <pthread.h>
 
-spinlock_t __gdtoa_locks[2];
+pthread_mutex_t __gdtoa_locks[] = {
+	PTHREAD_MUTEX_INITIALIZER,
+	PTHREAD_MUTEX_INITIALIZER
+};
-- 
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