annotate src/os/unix/ngx_sunpro_atomic_sparc64.h @ 674:4dcaf40cc702 NGINX_1_3_0

nginx 1.3.0 *) Feature: the "debug_connection" directive now supports IPv6 addresses and the "unix:" parameter. *) Feature: the "set_real_ip_from" directive and the "proxy" parameter of the "geo" directive now support IPv6 addresses. *) Feature: the "real_ip_recursive", "geoip_proxy", and "geoip_proxy_recursive" directives. *) Feature: the "proxy_recursive" parameter of the "geo" directive. *) Bugfix: a segmentation fault might occur in a worker process if the "resolver" directive was used. *) Bugfix: a segmentation fault might occur in a worker process if the "fastcgi_pass", "scgi_pass", or "uwsgi_pass" directives were used and backend returned incorrect response. *) Bugfix: a segmentation fault might occur in a worker process if the "rewrite" directive was used and new request arguments in a replacement used variables. *) Bugfix: nginx might hog CPU if the open file resource limit was reached. *) Bugfix: nginx might loop infinitely over backends if the "proxy_next_upstream" directive with the "http_404" parameter was used and there were backup servers specified in an upstream block. *) Bugfix: adding the "down" parameter of the "server" directive might cause unneeded client redistribution among backend servers if the "ip_hash" directive was used. *) Bugfix: socket leak. Thanks to Yichun Zhang. *) Bugfix: in the ngx_http_fastcgi_module.
author Igor Sysoev <http://sysoev.ru>
date Tue, 15 May 2012 00:00:00 +0400
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 * Copyright (C) Nginx, Inc.
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5 */
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8 #if (NGX_PTR_SIZE == 4)
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9 #define NGX_CASA ngx_casa
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10 #else
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11 #define NGX_CASA ngx_casxa
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12 #endif
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15 ngx_atomic_uint_t
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16 ngx_casa(ngx_atomic_uint_t set, ngx_atomic_uint_t old, ngx_atomic_t *lock);
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18 ngx_atomic_uint_t
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19 ngx_casxa(ngx_atomic_uint_t set, ngx_atomic_uint_t old, ngx_atomic_t *lock);
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21 /* the code in src/os/unix/ngx_sunpro_sparc64.il */
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24 static ngx_inline ngx_atomic_uint_t
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25 ngx_atomic_cmp_set(ngx_atomic_t *lock, ngx_atomic_uint_t old,
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26 ngx_atomic_uint_t set)
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27 {
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28 set = NGX_CASA(set, old, lock);
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30 return (set == old);
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31 }
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34 static ngx_inline ngx_atomic_int_t
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35 ngx_atomic_fetch_add(ngx_atomic_t *value, ngx_atomic_int_t add)
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36 {
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37 ngx_atomic_uint_t old, res;
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39 old = *value;
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41 for ( ;; ) {
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43 res = old + add;
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45 res = NGX_CASA(res, old, value);
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47 if (res == old) {
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48 return res;
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49 }
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51 old = res;
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52 }
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53 }
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56 #define ngx_memory_barrier() \
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57 __asm (".volatile"); \
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58 __asm ("membar #LoadLoad | #LoadStore | #StoreStore | #StoreLoad"); \
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59 __asm (".nonvolatile")
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61 #define ngx_cpu_pause()