From 213cad8e815a5a017a1fe2b254b5c041ea830d86 Mon Sep 17 00:00:00 2001
From: Igor Sysoev <igor@sysoev.ru>
Date: Wed, 25 Nov 2009 17:55:25 +0000
Subject: libatomic_ops support

---
 src/os/unix/ngx_atomic.h | 26 +++++++++++++++++++++++++-
 1 file changed, 25 insertions(+), 1 deletion(-)

(limited to 'src/os/unix/ngx_atomic.h')

diff --git a/src/os/unix/ngx_atomic.h b/src/os/unix/ngx_atomic.h
index b478cc8d4..39b3e6b7f 100644
--- a/src/os/unix/ngx_atomic.h
+++ b/src/os/unix/ngx_atomic.h
@@ -12,7 +12,31 @@
 #include <ngx_core.h>
 
 
-#if (NGX_DARWIN_ATOMIC)
+#if (NGX_HAVE_LIBATOMIC)
+
+#include <atomic_ops.h>
+
+#define NGX_HAVE_ATOMIC_OPS  1
+
+typedef long                        ngx_atomic_int_t;
+typedef AO_t                        ngx_atomic_uint_t;
+typedef volatile ngx_atomic_uint_t  ngx_atomic_t;
+
+#if (NGX_PTR_SIZE == 8)
+#define NGX_ATOMIC_T_LEN            (sizeof("-9223372036854775808") - 1)
+#else
+#define NGX_ATOMIC_T_LEN            (sizeof("-2147483648") - 1)
+#endif
+
+#define ngx_atomic_cmp_set(lock, old, new)                                    \
+    AO_compare_and_swap(lock, old, new)
+#define ngx_atomic_fetch_add(value, add)                                      \
+    AO_fetch_and_add(value, add)
+#define ngx_memory_barrier()        AO_nop()
+#define ngx_cpu_pause()
+
+
+#elif (NGX_DARWIN_ATOMIC)
 
 /*
  * use Darwin 8 atomic(3) and barrier(3) operations
-- 
cgit