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annotate src/core/ngx_shmtx.c @ 274:052a7b1d40e5 NGINX_0_5_7

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nginx 0.5.7 *) Feature: the ssl_session_cache storage optimization. *) Bugfixes in the "ssl_session_cache" and "limit_zone" directives. *) Bugfix: the segmentation fault was occurred on start or while reconfiguration if the "ssl_session_cache" or "limit_zone" directives were used on 64-bit platforms. *) Bugfix: a segmentation fault occurred if the "add_before_body" or "add_after_body" directives were used and there was no "Content-Type" header line in response. *) Bugfix: the OpenSSL library was always built with the threads support. Thanks to Den Ivanov. *) Bugfix: the PCRE-6.5+ library and the icc compiler compatibility.
author Igor Sysoev <http://sysoev.ru>
date Mon, 15 Jan 2007 00:00:00 +0300
parents 6ae1357b7b7c
children 3dbecd747fbb
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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11 #if (NGX_HAVE_ATOMIC_OPS)
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14 ngx_int_t
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15 ngx_shmtx_create(ngx_shmtx_t *mtx, void *addr, u_char *name)
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16 {
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17 mtx->lock = addr;
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18
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19 return NGX_OK;
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20 }
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21
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22 #else
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25 ngx_int_t
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26 ngx_shmtx_create(ngx_shmtx_t *mtx, void *addr, u_char *name)
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27 {
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28 if (mtx->name) {
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29
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30 if (ngx_strcmp(name, mtx->name) == 0) {
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31 mtx->name = name;
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32 return NGX_OK;
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33 }
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35 ngx_shmtx_destory(mtx);
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36 }
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38 mtx->fd = ngx_open_file(name, NGX_FILE_RDWR, NGX_FILE_CREATE_OR_OPEN);
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40 if (mtx->fd == NGX_INVALID_FILE) {
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41 ngx_log_error(NGX_LOG_EMERG, ngx_cycle->log, ngx_errno,
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42 ngx_open_file_n " \"%s\" failed", name);
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43 return NGX_ERROR;
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44 }
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45
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46 if (ngx_delete_file(name) == NGX_FILE_ERROR) {
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47 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, ngx_errno,
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48 ngx_delete_file_n " \"%s\" failed", name);
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49 }
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51 mtx->name = name;
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52
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53 return NGX_OK;
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54 }
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57 void
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58 ngx_shmtx_destory(ngx_shmtx_t *mtx)
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59 {
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60 if (ngx_close_file(mtx->fd) == NGX_FILE_ERROR) {
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61 ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, ngx_errno,
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62 ngx_close_file_n " \"%s\" failed", mtx->name);
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63 }
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64 }
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67 #endif