nginx 1.1.1 *) Change: now cache loader processes either as many files as specified by "loader_files" parameter or works no more than time specified by "loader_threshold" parameter during each iteration. *) Change: now SIGWINCH signal works only in deamon mode. *) Feature: now shared zones and caches use POSIX semaphores on Solaris. Thanks to Den Ivanov. *) Feature: accept filters are now supported on NetBSD. *) Bugfix: nginx could not be build on Linux 3.0. *) Bugfix: nginx did not use gzipping in some cases; the bug had appeared in 1.1.0. *) Bugfix: request body might be incorrectly processed if client used pipelining. *) Bugfix: in the "request_body_in_single_buf" directive. *) Bugfix: in "proxy_set_body" and "proxy_pass_request_body" directives if SSL connection to backend was used. *) Bugfix: nginx hogged CPU if all servers in an upstream were marked as "down". *) Bugfix: a segmentation fault might occur during reconfiguration if ssl_session_cache was defined but not used in a previous configuration. *) Bugfix: a segmentation fault might occur in a worker process if many backup servers were used in an upstream. *) Bugfix: a segmentation fault might occur in a worker process if "fastcgi/scgi/uwsgi_param" directives were used with values starting with "HTTP_"; the bug had appeared in 0.8.40.

/*
 * 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_ */