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view src/core/ngx_shmtx.c @ 183:f4b38f37ca5b
Added tag NGINX_0_3_38 for changeset 13710a1813ad
author | Igor Sysoev <http://sysoev.ru> |
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date | Fri, 14 Apr 2006 00:00:00 +0400 |
parents | 73e8476f9142 |
children | 6ae1357b7b7c |
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/* * Copyright (C) Igor Sysoev */ #include <ngx_config.h> #include <ngx_core.h> #if (NGX_HAVE_ATOMIC_OPS) ngx_int_t ngx_shmtx_create(ngx_shmtx_t *mtx, void *addr, u_char *name, ngx_log_t *log) { mtx->lock = addr; return NGX_OK; } #else ngx_int_t ngx_shmtx_create(ngx_shmtx_t *mtx, void *addr, u_char *name, ngx_log_t *log) { if (mtx->name) { if (ngx_strcmp(name, mtx->name) == 0) { mtx->name = name; mtx->log = log; return NGX_OK; } ngx_shmtx_destory(mtx); } mtx->fd = ngx_open_file(name, NGX_FILE_RDWR, NGX_FILE_CREATE_OR_OPEN); if (mtx->fd == NGX_INVALID_FILE) { ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, ngx_open_file_n " \"%s\" failed", name); return NGX_ERROR; } if (ngx_delete_file(name) == NGX_FILE_ERROR) { ngx_log_error(NGX_LOG_ALERT, log, ngx_errno, ngx_delete_file_n " \"%s\" failed", name); } mtx->name = name; mtx->log = log; return NGX_OK; } void ngx_shmtx_destory(ngx_shmtx_t *mtx) { if (ngx_close_file(mtx->fd) == NGX_FILE_ERROR) { ngx_log_error(NGX_LOG_ALERT, mtx->log, ngx_errno, ngx_close_file_n " \"%s\" failed", mtx->name); } } #endif