Mercurial > hg > nginx-vendor-0-8
view src/os/unix/ngx_shmem.c @ 214:0ad9eeb6ac7f NGINX_0_3_54
nginx 0.3.54
*) Feature: nginx now logs the subrequest information to the error log.
*) Feature: the "proxy_next_upstream", "fastcgi_next_upstream", and
"memcached_next_upstream" directives support the "off" parameter.
*) Feature: the "debug_connection" directive supports the CIDR address
form.
*) Bugfix: if a response of proxied server or FastCGI server was
converted from UTF-8 or back, then it may be transferred incomplete.
*) Bugfix: the $upstream_response_time variable had the time of the
first request to a backend only.
*) Bugfix: nginx could not be built on amd64 platform; bug appeared in
0.3.53.
author | Igor Sysoev <http://sysoev.ru> |
---|---|
date | Tue, 11 Jul 2006 00:00:00 +0400 |
parents | af37b7cb6698 |
children |
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/* * Copyright (C) Igor Sysoev */ #include <ngx_config.h> #include <ngx_core.h> #if (NGX_HAVE_MAP_ANON) ngx_int_t ngx_shm_alloc(ngx_shm_t *shm) { shm->addr = (u_char *) mmap(NULL, shm->size, PROT_READ|PROT_WRITE, MAP_ANON|MAP_SHARED, -1, 0); if (shm->addr == MAP_FAILED) { ngx_log_error(NGX_LOG_ALERT, shm->log, ngx_errno, "mmap(MAP_ANON|MAP_SHARED, %uz) failed", shm->size); return NGX_ERROR; } return NGX_OK; } void ngx_shm_free(ngx_shm_t *shm) { if (munmap((void *) shm->addr, shm->size) == -1) { ngx_log_error(NGX_LOG_ALERT, shm->log, ngx_errno, "munmap(%p, %uz) failed", shm->addr, shm->size); } } #elif (NGX_HAVE_MAP_DEVZERO) ngx_int_t ngx_shm_alloc(ngx_shm_t *shm) { ngx_fd_t fd; fd = open("/dev/zero", O_RDWR); if (fd == -1) { ngx_log_error(NGX_LOG_ALERT, shm->log, ngx_errno, "open(\"/dev/zero\") failed"); return NGX_ERROR; } shm->addr = (u_char *) mmap(NULL, shm->size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0); if (shm->addr == MAP_FAILED) { ngx_log_error(NGX_LOG_ALERT, shm->log, ngx_errno, "mmap(/dev/zero, MAP_SHARED, %uz) failed", shm->size); } if (close(fd) == -1) { ngx_log_error(NGX_LOG_ALERT, shm->log, ngx_errno, "close(\"/dev/zero\") failed"); } return (shm->addr == MAP_FAILED) ? NGX_ERROR : NGX_OK; } void ngx_shm_free(ngx_shm_t *shm) { if (munmap((void *) shm->addr, shm->size) == -1) { ngx_log_error(NGX_LOG_ALERT, shm->log, ngx_errno, "munmap(%p, %uz) failed", shm->addr, shm->size); } } #elif (NGX_HAVE_SYSVSHM) #include <sys/ipc.h> #include <sys/shm.h> ngx_int_t ngx_shm_alloc(ngx_shm_t *shm) { int id; id = shmget(IPC_PRIVATE, shm->size, (SHM_R|SHM_W|IPC_CREAT)); if (id == -1) { ngx_log_error(NGX_LOG_ALERT, shm->log, ngx_errno, "shmget(%uz) failed", shm->size); return NGX_ERROR; } ngx_log_debug1(NGX_LOG_DEBUG_CORE, shm->log, 0, "shmget id: %d", id); shm->addr = shmat(id, NULL, 0); if (shm->addr == (void *) -1) { ngx_log_error(NGX_LOG_ALERT, shm->log, ngx_errno, "shmat() failed"); } if (shmctl(id, IPC_RMID, NULL) == -1) { ngx_log_error(NGX_LOG_ALERT, shm->log, ngx_errno, "shmctl(IPC_RMID) failed"); } return (shm->addr == (void *) -1) ? NGX_ERROR : NGX_OK; } void ngx_shm_free(ngx_shm_t *shm) { if (shmdt(shm->addr) == -1) { ngx_log_error(NGX_LOG_ALERT, shm->log, ngx_errno, "shmdt(%p) failed", shm->addr); } } #endif