From d08c4e4910d78ef0ddd9e7917c1f2d61b0021d4a Mon Sep 17 00:00:00 2001
From: kurt <>
Date: Tue, 1 Jan 2008 00:43:39 +0000
Subject: - make arc4random*() functions thread safe. Use a custom spinlock
 function instead of the generic pthread macros since free(3) uses
 __arc4_getbyte() when freeing small sized allocations and the generic pthread
 macros call malloc(3). - eliminate passing pointers to a static variable with
 global scope (rs) for additional code clarity and reduction. - shlib minor
 bumps for libc and libpthread due to new functions. From andreas@ with some
 bits from me. okay tedu@ marc@ w/some spot checking from millert@

---
 src/lib/libc/include/thread_private.h | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

(limited to 'src/lib/libc/include')

diff --git a/src/lib/libc/include/thread_private.h b/src/lib/libc/include/thread_private.h
index 146f0b0a01..f55880f7ba 100644
--- a/src/lib/libc/include/thread_private.h
+++ b/src/lib/libc/include/thread_private.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: thread_private.h,v 1.21 2007/11/19 02:54:19 kurt Exp $ */
+/* $OpenBSD: thread_private.h,v 1.22 2008/01/01 00:43:39 kurt Exp $ */
 
 /* PUBLIC DOMAIN: No Rights Reserved. Marco S Hyman <marc@snafu.org> */
 
@@ -150,4 +150,16 @@ void	_thread_atexit_unlock(void);
 						_thread_atexit_unlock();\
 				} while (0)
 
+void	_thread_arc4_lock(void);
+void	_thread_arc4_unlock(void);
+
+#define _ARC4_LOCK()		do {					\
+					if (__isthreaded)		\
+						_thread_arc4_lock();	\
+				} while (0)
+#define _ARC4_UNLOCK()		do {					\
+					if (__isthreaded)		\
+						_thread_arc4_unlock();\
+				} while (0)
+
 #endif /* _THREAD_PRIVATE_H_ */
-- 
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