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From traw...@apache.org
Subject svn commit: r585935 - in /apr/apr/trunk: CHANGES atomic/os390/atomic.c
Date Thu, 18 Oct 2007 12:11:49 GMT
Author: trawick
Date: Thu Oct 18 05:11:46 2007
New Revision: 585935

URL: http://svn.apache.org/viewvc?rev=585935&view=rev
Log:
Implement apr_atomic_casptr() for z/OS.

Submitted by: David Jones <oscaremma gmail.com>
Reviewed by:  trawick

Modified:
    apr/apr/trunk/CHANGES
    apr/apr/trunk/atomic/os390/atomic.c

Modified: apr/apr/trunk/CHANGES
URL: http://svn.apache.org/viewvc/apr/apr/trunk/CHANGES?rev=585935&r1=585934&r2=585935&view=diff
==============================================================================
--- apr/apr/trunk/CHANGES [utf-8] (original)
+++ apr/apr/trunk/CHANGES [utf-8] Thu Oct 18 05:11:46 2007
@@ -1,6 +1,9 @@
                                                      -*- coding: utf-8 -*-
 Changes for APR 1.3.0
 
+  *) Implement apr_atomic_casptr() for z/OS.
+     [David Jones <oscaremma gmail.com>]
+
   *) Fill in apr_fileinfo_t member st_csize on Netware and Unix (PR 41678),
      and refine the file times down to apr_time_t resolution if supported
      by a st_atimensec or st_atim.tv_nsec value by the OS.  Additional

Modified: apr/apr/trunk/atomic/os390/atomic.c
URL: http://svn.apache.org/viewvc/apr/apr/trunk/atomic/os390/atomic.c?rev=585935&r1=585934&r2=585935&view=diff
==============================================================================
--- apr/apr/trunk/atomic/os390/atomic.c (original)
+++ apr/apr/trunk/atomic/os390/atomic.c Thu Oct 18 05:11:46 2007
@@ -82,6 +82,30 @@
     return old; /* old is automatically updated from mem on cs failure */
 }
 
+#if APR_SIZEOF_VOIDP == 4
+void *apr_atomic_casptr(volatile void **mem_ptr,
+                        void *swap_ptr,
+                        const void *cmp_ptr)
+{
+     __cs1(&cmp_ptr,     /* automatically updated from mem on __cs1 failure  */
+           mem_ptr,      /* set from swap when __cs1 succeeds                */
+           &swap_ptr);
+     return (void *)cmp_ptr;
+}
+#elif APR_SIZEOF_VOIDP == 8
+void *apr_atomic_casptr(volatile void **mem_ptr,
+                        void *swap_ptr,
+                        const void *cmp_ptr)
+{
+     __csg(&cmp_ptr,     /* automatically updated from mem on __csg failure  */
+           mem_ptr,      /* set from swap when __csg succeeds                */
+           &swap_ptr);  
+     return (void *)cmp_ptr;
+}
+#else
+#error APR_SIZEOF_VOIDP value not supported
+#endif /* APR_SIZEOF_VOIDP */
+
 apr_uint32_t apr_atomic_xchg32(volatile apr_uint32_t *mem, apr_uint32_t val)
 {
     apr_uint32_t old, new_val; 



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