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comparison src/os/unix/ngx_atomic.h @ 7915:09d15a2dbc6b

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Give GCC atomics precedence over deprecated Darwin atomic(3). This allows to build nginx on macOS with -Wdeprecated-declarations.
author Sergey Kandaurov <pluknet@nginx.com>
date Mon, 30 Aug 2021 14:45:21 +0300
parents 2cd019520210
children
comparison
equal deleted inserted replaced
7914:9cf043a5d9ca 7915:09d15a2dbc6b
36 AO_fetch_and_add(value, add) 36 AO_fetch_and_add(value, add)
37 #define ngx_memory_barrier() AO_nop() 37 #define ngx_memory_barrier() AO_nop()
38 #define ngx_cpu_pause() 38 #define ngx_cpu_pause()
39 39
40 40
41 #elif (NGX_HAVE_GCC_ATOMIC)
42
43 /* GCC 4.1 builtin atomic operations */
44
45 #define NGX_HAVE_ATOMIC_OPS 1
46
47 typedef long ngx_atomic_int_t;
48 typedef unsigned long ngx_atomic_uint_t;
49
50 #if (NGX_PTR_SIZE == 8)
51 #define NGX_ATOMIC_T_LEN (sizeof("-9223372036854775808") - 1)
52 #else
53 #define NGX_ATOMIC_T_LEN (sizeof("-2147483648") - 1)
54 #endif
55
56 typedef volatile ngx_atomic_uint_t ngx_atomic_t;
57
58
59 #define ngx_atomic_cmp_set(lock, old, set) \
60 __sync_bool_compare_and_swap(lock, old, set)
61
62 #define ngx_atomic_fetch_add(value, add) \
63 __sync_fetch_and_add(value, add)
64
65 #define ngx_memory_barrier() __sync_synchronize()
66
67 #if ( __i386__ || __i386 || __amd64__ || __amd64 )
68 #define ngx_cpu_pause() __asm__ ("pause")
69 #else
70 #define ngx_cpu_pause()
71 #endif
72
73
41 #elif (NGX_DARWIN_ATOMIC) 74 #elif (NGX_DARWIN_ATOMIC)
42 75
43 /* 76 /*
44 * use Darwin 8 atomic(3) and barrier(3) operations 77 * use Darwin 8 atomic(3) and barrier(3) operations
45 * optimized at run-time for UP and SMP 78 * optimized at run-time for UP and SMP
84 #define ngx_memory_barrier() OSMemoryBarrier() 117 #define ngx_memory_barrier() OSMemoryBarrier()
85 118
86 #define ngx_cpu_pause() 119 #define ngx_cpu_pause()
87 120
88 typedef volatile ngx_atomic_uint_t ngx_atomic_t; 121 typedef volatile ngx_atomic_uint_t ngx_atomic_t;
89
90
91 #elif (NGX_HAVE_GCC_ATOMIC)
92
93 /* GCC 4.1 builtin atomic operations */
94
95 #define NGX_HAVE_ATOMIC_OPS 1
96
97 typedef long ngx_atomic_int_t;
98 typedef unsigned long ngx_atomic_uint_t;
99
100 #if (NGX_PTR_SIZE == 8)
101 #define NGX_ATOMIC_T_LEN (sizeof("-9223372036854775808") - 1)
102 #else
103 #define NGX_ATOMIC_T_LEN (sizeof("-2147483648") - 1)
104 #endif
105
106 typedef volatile ngx_atomic_uint_t ngx_atomic_t;
107
108
109 #define ngx_atomic_cmp_set(lock, old, set) \
110 __sync_bool_compare_and_swap(lock, old, set)
111
112 #define ngx_atomic_fetch_add(value, add) \
113 __sync_fetch_and_add(value, add)
114
115 #define ngx_memory_barrier() __sync_synchronize()
116
117 #if ( __i386__ || __i386 || __amd64__ || __amd64 )
118 #define ngx_cpu_pause() __asm__ ("pause")
119 #else
120 #define ngx_cpu_pause()
121 #endif
122 122
123 123
124 #elif ( __i386__ || __i386 ) 124 #elif ( __i386__ || __i386 )
125 125
126 typedef int32_t ngx_atomic_int_t; 126 typedef int32_t ngx_atomic_int_t;