Mercurial > hg > nginx
view src/core/ngx_crc.h @ 9162:f9845e4b5c14
QUIC: simplified setting close timer when closing connection.
Previously, the timer was never reset due to an explicit check. The check was
added in 36b59521a41c as part of connection close simplification. The reason
was to retain the earliest timeout. However, the timeouts are all the same
while QUIC handshake is in progress and resetting the timer for the same value
has no performance implications. After handshake completion there's only
application level. The change removes the check.
author | Roman Arutyunyan <arut@nginx.com> |
---|---|
date | Thu, 14 Sep 2023 14:15:20 +0400 |
parents | d620f497c50f |
children |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #ifndef _NGX_CRC_H_INCLUDED_ #define _NGX_CRC_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> /* 32-bit crc16 */ static ngx_inline uint32_t ngx_crc(u_char *data, size_t len) { uint32_t sum; for (sum = 0; len; len--) { /* * gcc 2.95.2 x86 and icc 7.1.006 compile * that operator into the single "rol" opcode, * msvc 6.0sp2 compiles it into four opcodes. */ sum = sum >> 1 | sum << 31; sum += *data++; } return sum; } #endif /* _NGX_CRC_H_INCLUDED_ */