[nginx] Give GCC atomics precedence over deprecated Darwin atomic(3).

[Sergey Kandaurov]

details:   https://hg.nginx.org/nginx/rev/09d15a2dbc6b
branches:  
changeset: 7915:09d15a2dbc6b
user:      Sergey Kandaurov <pluknet at nginx.com>
date:      Mon Aug 30 14:45:21 2021 +0300
description:
Give GCC atomics precedence over deprecated Darwin atomic(3).

This allows to build nginx on macOS with -Wdeprecated-declarations.

diffstat:

 src/os/unix/ngx_atomic.h |  66 ++++++++++++++++++++++++------------------------
 1 files changed, 33 insertions(+), 33 deletions(-)

diffs (83 lines):

diff -r 9cf043a5d9ca -r 09d15a2dbc6b src/os/unix/ngx_atomic.h
--- a/src/os/unix/ngx_atomic.h	Sun Aug 29 22:22:02 2021 +0300
+++ b/src/os/unix/ngx_atomic.h	Mon Aug 30 14:45:21 2021 +0300
@@ -38,6 +38,39 @@ typedef volatile ngx_atomic_uint_t  ngx_
 #define ngx_cpu_pause()
 
 
+#elif (NGX_HAVE_GCC_ATOMIC)
+
+/* GCC 4.1 builtin atomic operations */
+
+#define NGX_HAVE_ATOMIC_OPS  1
+
+typedef long                        ngx_atomic_int_t;
+typedef unsigned long               ngx_atomic_uint_t;
+
+#if (NGX_PTR_SIZE == 8)
+#define NGX_ATOMIC_T_LEN            (sizeof("-9223372036854775808") - 1)
+#else
+#define NGX_ATOMIC_T_LEN            (sizeof("-2147483648") - 1)
+#endif
+
+typedef volatile ngx_atomic_uint_t  ngx_atomic_t;
+
+
+#define ngx_atomic_cmp_set(lock, old, set)                                    \
+    __sync_bool_compare_and_swap(lock, old, set)
+
+#define ngx_atomic_fetch_add(value, add)                                      \
+    __sync_fetch_and_add(value, add)
+
+#define ngx_memory_barrier()        __sync_synchronize()
+
+#if ( __i386__ || __i386 || __amd64__ || __amd64 )
+#define ngx_cpu_pause()             __asm__ ("pause")
+#else
+#define ngx_cpu_pause()
+#endif
+
+
 #elif (NGX_DARWIN_ATOMIC)
 
 /*
@@ -88,39 +121,6 @@ typedef uint32_t                    ngx_
 typedef volatile ngx_atomic_uint_t  ngx_atomic_t;
 
 
-#elif (NGX_HAVE_GCC_ATOMIC)
-
-/* GCC 4.1 builtin atomic operations */
-
-#define NGX_HAVE_ATOMIC_OPS  1
-
-typedef long                        ngx_atomic_int_t;
-typedef unsigned long               ngx_atomic_uint_t;
-
-#if (NGX_PTR_SIZE == 8)
-#define NGX_ATOMIC_T_LEN            (sizeof("-9223372036854775808") - 1)
-#else
-#define NGX_ATOMIC_T_LEN            (sizeof("-2147483648") - 1)
-#endif
-
-typedef volatile ngx_atomic_uint_t  ngx_atomic_t;
-
-
-#define ngx_atomic_cmp_set(lock, old, set)                                    \
-    __sync_bool_compare_and_swap(lock, old, set)
-
-#define ngx_atomic_fetch_add(value, add)                                      \
-    __sync_fetch_and_add(value, add)
-
-#define ngx_memory_barrier()        __sync_synchronize()
-
-#if ( __i386__ || __i386 || __amd64__ || __amd64 )
-#define ngx_cpu_pause()             __asm__ ("pause")
-#else
-#define ngx_cpu_pause()
-#endif
-
-
 #elif ( __i386__ || __i386 )
 
 typedef int32_t                     ngx_atomic_int_t;