Mercurial > hg > nginx
view src/os/unix/ngx_shmem.c @ 673:b80f94fa2197 release-0.3.58
nginx-0.3.58-RELEASE import
*) Feature: the "error_page" directive supports the variables.
*) Change: now the procfs interface instead of sysctl is used on Linux.
*) Change: now the "Content-Type" header line is inherited from first
response when the "X-Accel-Redirect" was used.
*) Bugfix: the "error_page" directive did not redirect the 413 error.
*) Bugfix: the trailing "?" did not remove old arguments if no new
arguments were added to a rewritten URI.
*) Bugfix: nginx could not run on 64-bit FreeBSD 7.0-CURRENT.
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Mon, 14 Aug 2006 15:09:38 +0000 |
parents | 715d24327080 |
children | d620f497c50f |
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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