- 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@

1 files changed, 19 insertions, 1 deletions

diff --git a/lib/libc/thread/unithread_malloc_lock.c b/lib/libc/thread/unithread_malloc_lock.c
index f7231915d6f..ca5081ba780 100644
--- a/lib/libc/thread/unithread_malloc_lock.c
+++ b/lib/libc/thread/unithread_malloc_lock.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: unithread_malloc_lock.c,v 1.6 2006/02/22 07:16:32 otto Exp $	*/
+/*	$OpenBSD: unithread_malloc_lock.c,v 1.7 2008/01/01 00:43:39 kurt Exp $	*/
 
 #include <sys/time.h>
 #include "thread_private.h"
@@ -17,6 +17,12 @@ WEAK_PROTOTYPE(_thread_atexit_unlock);
 WEAK_ALIAS(_thread_atexit_lock);
 WEAK_ALIAS(_thread_atexit_unlock);
 
+WEAK_PROTOTYPE(_thread_arc4_lock);
+WEAK_PROTOTYPE(_thread_arc4_unlock);
+
+WEAK_ALIAS(_thread_arc4_lock);
+WEAK_ALIAS(_thread_arc4_unlock);
+
 void
 WEAK_NAME(_thread_malloc_lock)(void)
 {
@@ -46,3 +52,15 @@ WEAK_NAME(_thread_atexit_unlock)(void)
 {
 	return;
 }
+
+void
+WEAK_NAME(_thread_arc4_lock)(void)
+{
+	return;
+}
+
+void
+WEAK_NAME(_thread_arc4_unlock)(void)
+{
+	return;
+}