annotate src/os/unix/ngx_gcc_atomic_sparc64.h @ 502:89dc5654117c NGINX_0_7_63

nginx 0.7.63 *) Security: now "/../" are disabled in "Destination" request header line. *) Change: minimum supported OpenSSL version is 0.9.7. *) Change: the "ask" parameter of the "ssl_verify_client" directive was changed to the "optional" parameter and now it checks a client certificate if it was offered. Thanks to Brice Figureau. *) Feature: now the "-V" switch shows TLS SNI support. *) Feature: the $ssl_client_verify variable. Thanks to Brice Figureau. *) Feature: the "ssl_crl" directive. Thanks to Brice Figureau. *) Bugfix: the $ssl_client_cert variable usage corrupted memory; the bug had appeared in 0.7.7. Thanks to Sergey Zhuravlev. *) Feature: now the start cache loader runs in a separate process; this should improve large caches handling. *) Feature: now temporary files and permanent storage area may reside at different file systems. *) Bugfix: nginx counted incorrectly disk cache size. *) Change: now directive "gzip_disable msie6" does not disable gzipping for MSIE 6.0 SV1. *) Bugfix: nginx always added "Vary: Accept-Encoding" response header line, if both "gzip_static" and "gzip_vary" were on. *) Feature: the "proxy" parameter of the "geo" directive. *) Feature: the ngx_http_geoip_module. *) Feature: the "limit_rate_after" directive. Thanks to Ivan Debnar. *) Feature: the "limit_req_log_level" and "limit_conn_log_level" directives. *) Bugfix: now "limit_req" directive conforms to the leaky bucket algorithm. Thanks to Maxim Dounin. *) Bugfix: in ngx_http_limit_req_module. Thanks to Maxim Dounin. *) Bugfix: now nginx allows underscores in a request method. *) Bugfix: "proxy_pass_header" and "fastcgi_pass_header" directives did not pass to a client the "X-Accel-Redirect", "X-Accel-Limit-Rate", "X-Accel-Buffering", and "X-Accel-Charset" lines from backend response header. Thanks to Maxim Dounin. *) Bugfix: in handling "Last-Modified" and "Accept-Ranges" backend response header lines; the bug had appeared in 0.7.44. Thanks to Maxim Dounin. *) Feature: the "image_filter_transparency" directive. *) Feature: the "image_filter" directive supports variables for setting size. *) Bugfix: in PNG alpha-channel support in the ngx_http_image_filter_module. *) Bugfix: in transparency support in the ngx_http_image_filter_module. *) Feature: now several "perl_modules" directives may be used. *) Bugfix: ngx_http_perl_module responses did not work in subrequests. *) Bugfix: nginx sent '\0' in a "Location" response header line on MKCOL request. Thanks to Xie Zhenye. *) Bugfix: an "error_page" directive did not redirect a 413 error; the bug had appeared in 0.6.10. *) Bugfix: in memory allocation error handling. Thanks to Maxim Dounin and Kirill A. Korinskiy.
author Igor Sysoev <http://sysoev.ru>
date Mon, 26 Oct 2009 00:00:00 +0300
parents 73e8476f9142
children
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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7 /*
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8 * "casa [r1] 0x80, r2, r0" and
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9 * "casxa [r1] 0x80, r2, r0" do the following:
dad2fe8ecf08 nginx 0.3.2
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10 *
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11 * if ([r1] == r2) {
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12 * swap(r0, [r1]);
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13 * } else {
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14 * r0 = [r1];
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15 * }
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16 *
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17 * so "r0 == r2" means that the operation was successfull.
dad2fe8ecf08 nginx 0.3.2
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18 *
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19 *
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20 * The "r" means the general register.
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21 * The "+r" means the general register used for both input and output.
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22 */
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dad2fe8ecf08 nginx 0.3.2
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dad2fe8ecf08 nginx 0.3.2
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25 #if (NGX_PTR_SIZE == 4)
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26 #define NGX_CASA "casa"
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27 #else
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28 #define NGX_CASA "casxa"
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29 #endif
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dad2fe8ecf08 nginx 0.3.2
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dad2fe8ecf08 nginx 0.3.2
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32 static ngx_inline ngx_atomic_uint_t
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33 ngx_atomic_cmp_set(ngx_atomic_t *lock, ngx_atomic_uint_t old,
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34 ngx_atomic_uint_t set)
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35 {
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36 __asm__ volatile (
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37
dad2fe8ecf08 nginx 0.3.2
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38 NGX_CASA " [%1] 0x80, %2, %0"
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40 : "+r" (set) : "r" (lock), "r" (old) : "memory");
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41
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42 return (set == old);
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43 }
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dad2fe8ecf08 nginx 0.3.2
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46 static ngx_inline ngx_atomic_int_t
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47 ngx_atomic_fetch_add(ngx_atomic_t *value, ngx_atomic_int_t add)
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48 {
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49 ngx_atomic_uint_t old, res;
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51 old = *value;
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52
dad2fe8ecf08 nginx 0.3.2
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53 for ( ;; ) {
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55 res = old + add;
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56
dad2fe8ecf08 nginx 0.3.2
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57 __asm__ volatile (
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58
dad2fe8ecf08 nginx 0.3.2
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59 NGX_CASA " [%1] 0x80, %2, %0"
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61 : "+r" (res) : "r" (value), "r" (old) : "memory");
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63 if (res == old) {
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64 return res;
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65 }
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67 old = res;
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68 }
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69 }
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72 #if (NGX_SMP)
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73 #define ngx_memory_barrier() \
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74 __asm__ volatile ( \
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75 "membar #LoadLoad | #LoadStore | #StoreStore | #StoreLoad" \
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76 ::: "memory")
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77 #else
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78 #define ngx_memory_barrier() __asm__ volatile ("" ::: "memory")
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79 #endif
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80
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81 #define ngx_cpu_pause()