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view src/core/ngx_md5.h @ 4113:a28ba1cdec27
Buffers reuse in chunked filter.
There were 2 buffers allocated on each buffer chain sent through chunked
filter (one buffer for chunk size, another one for trailing CRLF, about
120 bytes in total on 32-bit platforms). This resulted in large memory
consumption with long-lived requests sending many buffer chains. Usual
example of problematic scenario is streaming though proxy with
proxy_buffering set to off.
Introduced buffers reuse reduces memory consumption in the above problematic
scenario.
See here for initial report:
http://mailman.nginx.org/pipermail/nginx/2010-April/019814.html
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Thu, 15 Sep 2011 15:25:42 +0000 |
parents | 38e6f45c5e3d |
children | d620f497c50f |
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/* * Copyright (C) Igor Sysoev */ #ifndef _NGX_MD5_H_INCLUDED_ #define _NGX_MD5_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> #if (NGX_HAVE_MD5) #if (NGX_HAVE_OPENSSL_MD5_H) #include <openssl/md5.h> #else #include <md5.h> #endif typedef MD5_CTX ngx_md5_t; #if (NGX_OPENSSL_MD5) #define ngx_md5_init MD5_Init #define ngx_md5_update MD5_Update #define ngx_md5_final MD5_Final #else #define ngx_md5_init MD5Init #define ngx_md5_update MD5Update #define ngx_md5_final MD5Final #endif #else /* !NGX_HAVE_MD5 */ typedef struct { uint64_t bytes; uint32_t a, b, c, d; u_char buffer[64]; } ngx_md5_t; void ngx_md5_init(ngx_md5_t *ctx); void ngx_md5_update(ngx_md5_t *ctx, const void *data, size_t size); void ngx_md5_final(u_char result[16], ngx_md5_t *ctx); #endif #endif /* _NGX_MD5_H_INCLUDED_ */