annotate src/core/ngx_crc.h @ 479:c52408583801 release-0.1.14

nginx-0.1.14-RELEASE import *) Feature: the autoconfiguration directives: --http-client-body-temp-path=PATH, --http-proxy-temp-path=PATH, and --http-fastcgi-temp-path=PATH *) Change: the directory name for the temporary files with the client request body is specified by directive client_body_temp_path, by default it is <prefix>/client_body_temp. *) Feature: the ngx_http_fastcgi_module and the directives: fastcgi_pass, fastcgi_root, fastcgi_index, fastcgi_params, fastcgi_connect_timeout, fastcgi_send_timeout, fastcgi_read_timeout, fastcgi_send_lowat, fastcgi_header_buffer_size, fastcgi_buffers, fastcgi_busy_buffers_size, fastcgi_temp_path, fastcgi_max_temp_file_size, fastcgi_temp_file_write_size, fastcgi_next_upstream, and fastcgi_x_powered_by. *) Bugfix: the "[alert] zero size buf" error; the bug had appeared in 0.1.3. *) Change: the URI must be specified after the host name in the proxy_pass directive. *) Change: the %3F symbol in the URI was considered as the argument string start. *) Feature: the unix domain sockets support in the ngx_http_proxy_module. *) Feature: the ssl_engine and ssl_ciphers directives. Thanks to Sergey Skvortsov for SSL-accelerator.
author Igor Sysoev <igor@sysoev.ru>
date Tue, 18 Jan 2005 13:03:58 +0000
parents bbd6b0b4a2b1
children 5622cdd48e5b
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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7 #ifndef _NGX_CRC_H_INCLUDED_
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8 #define _NGX_CRC_H_INCLUDED_
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11 /* 32-bit crc16 */
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13 static ngx_inline uint32_t ngx_crc(char *data, size_t len)
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14 {
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15 uint32_t sum;
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17 for (sum = 0; len; len--) {
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19 /*
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20 * gcc 2.95.2 x86 and icc 7.1.006 compile that operator
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21 * into the single "rol" opcode.
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22 * msvc 6.0sp2 compiles it into four opcodes.
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23 */
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24 sum = sum >> 1 | sum << 31;
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26 sum += *data++;
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27 }
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29 return sum;
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30 }
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33 #endif /* _NGX_CRC_H_INCLUDED_ */