Mercurial > hg > nginx-vendor-current
view src/core/ngx_crc32.h @ 588:b6a5942a4e6a NGINX_0_8_46
nginx 0.8.46
*) Change: now the "proxy_no_cache", "fastcgi_no_cache",
"uwsgi_no_cache", and "scgi_no_cache" directives affect on a cached
response saving only.
*) Feature: the "proxy_cache_bypass", "fastcgi_cache_bypass",
"uwsgi_cache_bypass", and "scgi_cache_bypass" directives.
*) Bugfix: nginx did not free memory in cache keys zones if there was
an error during working with backend: the memory was freed only
after inactivity time or on memory low condition.
author | Igor Sysoev <http://sysoev.ru> |
---|---|
date | Mon, 19 Jul 2010 00:00:00 +0400 |
parents | b743d290eb3b |
children | d0f7a625f27c |
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/* * Copyright (C) Igor Sysoev */ #ifndef _NGX_CRC32_H_INCLUDED_ #define _NGX_CRC32_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> extern uint32_t *ngx_crc32_table_short; extern uint32_t ngx_crc32_table256[]; static ngx_inline uint32_t ngx_crc32_short(u_char *p, size_t len) { u_char c; uint32_t crc; crc = 0xffffffff; while (len--) { c = *p++; crc = ngx_crc32_table_short[(crc ^ (c & 0xf)) & 0xf] ^ (crc >> 4); crc = ngx_crc32_table_short[(crc ^ (c >> 4)) & 0xf] ^ (crc >> 4); } return crc ^ 0xffffffff; } static ngx_inline uint32_t ngx_crc32_long(u_char *p, size_t len) { uint32_t crc; crc = 0xffffffff; while (len--) { crc = ngx_crc32_table256[(crc ^ *p++) & 0xff] ^ (crc >> 8); } return crc ^ 0xffffffff; } #define ngx_crc32_init(crc) \ crc = 0xffffffff static ngx_inline void ngx_crc32_update(uint32_t *crc, u_char *p, size_t len) { uint32_t c; c = *crc; while (len--) { c = ngx_crc32_table256[(c ^ *p++) & 0xff] ^ (c >> 8); } *crc = c; } #define ngx_crc32_final(crc) \ crc ^= 0xffffffff ngx_int_t ngx_crc32_table_init(void); #endif /* _NGX_CRC32_H_INCLUDED_ */