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comparison src/os/unix/ngx_atomic.h @ 6474:2cd019520210

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author Ruslan Ermilov <ru@nginx.com>
date Wed, 30 Mar 2016 11:52:16 +0300
parents 4c36e15651f7
children 09d15a2dbc6b
comparison
equal deleted inserted replaced
6473:9d7326d3f474 6474:2cd019520210
274 #define NGX_ATOMIC_T_LEN (sizeof("-2147483648") - 1) 274 #define NGX_ATOMIC_T_LEN (sizeof("-2147483648") - 1)
275 275
276 276
277 static ngx_inline ngx_atomic_uint_t 277 static ngx_inline ngx_atomic_uint_t
278 ngx_atomic_cmp_set(ngx_atomic_t *lock, ngx_atomic_uint_t old, 278 ngx_atomic_cmp_set(ngx_atomic_t *lock, ngx_atomic_uint_t old,
279 ngx_atomic_uint_t set) 279 ngx_atomic_uint_t set)
280 { 280 {
281 if (*lock == old) { 281 if (*lock == old) {
282 *lock = set; 282 *lock = set;
283 return 1; 283 return 1;
284 } 284 }
285 285
286 return 0; 286 return 0;
287 } 287 }
288 288
289 289
290 static ngx_inline ngx_atomic_int_t 290 static ngx_inline ngx_atomic_int_t
291 ngx_atomic_fetch_add(ngx_atomic_t *value, ngx_atomic_int_t add) 291 ngx_atomic_fetch_add(ngx_atomic_t *value, ngx_atomic_int_t add)
292 { 292 {
293 ngx_atomic_int_t old; 293 ngx_atomic_int_t old;
294 294
295 old = *value; 295 old = *value;
296 *value += add; 296 *value += add;
297 297
298 return old; 298 return old;
299 } 299 }
300 300
301 #define ngx_memory_barrier() 301 #define ngx_memory_barrier()
302 #define ngx_cpu_pause() 302 #define ngx_cpu_pause()
303 303