view src/core/ngx_md5.h @ 4309:3f6040cd731e

Added shmtx interface to forcibly unlock mutexes. It is currently used from master process on abnormal worker termination to unlock accept mutex (unlocking of accept mutex was broken in 1.0.2). It is expected to be used in the future to unlock other mutexes as well. Shared mutex code was rewritten to make this possible in a safe way, i.e. with a check if lock was actually held by the exited process. We again use pid to lock mutex, and use separate atomic variable for a count of processes waiting in sem_wait().
author Maxim Dounin <mdounin@mdounin.ru>
date Wed, 23 Nov 2011 13:55:38 +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_ */