X-Git-Url: http://ftp.carnet.hr/carnet-debian/scm?p=php5-apc.git;a=blobdiff_plain;f=apc_mmap.c;fp=apc_mmap.c;h=0000000000000000000000000000000000000000;hp=f29de886cb25fac5490c0b118c42928ef42ac808;hb=a34ea625346aecd2d2b227b8ca4f114eaa607213;hpb=b0895ef8074c6dd090f9b0a65d58179941541756 diff --git a/apc_mmap.c b/apc_mmap.c deleted file mode 100644 index f29de88..0000000 --- a/apc_mmap.c +++ /dev/null @@ -1,139 +0,0 @@ -/* - +----------------------------------------------------------------------+ - | APC | - +----------------------------------------------------------------------+ - | Copyright (c) 2008 The PHP Group | - +----------------------------------------------------------------------+ - | This source file is subject to version 3.01 of the PHP license, | - | that is bundled with this package in the file LICENSE, and is | - | available through the world-wide-web at the following url: | - | http://www.php.net/license/3_01.txt | - | If you did not receive a copy of the PHP license and are unable to | - | obtain it through the world-wide-web, please send a note to | - | license@php.net so we can mail you a copy immediately. | - +----------------------------------------------------------------------+ - | Authors: Rasmus Lerdorf | - +----------------------------------------------------------------------+ - - This software was contributed to PHP by Community Connect Inc. in 2002 - and revised in 2005 by Yahoo! Inc. to add support for PHP 5.1. - Future revisions and derivatives of this source code must acknowledge - Community Connect Inc. as the original contributor of this module by - leaving this note intact in the source code. - - All other licensing and usage conditions are those of the PHP Group. - - */ - -/* $Id: apc_mmap.c,v 3.7.2.2 2008/05/11 18:57:00 rasmus Exp $ */ - -#include "apc.h" - -#if APC_MMAP - -#include -#include -#include - -/* - * Some operating systems (like FreeBSD) have a MAP_NOSYNC flag that - * tells whatever update daemons might be running to not flush dirty - * vm pages to disk unless absolutely necessary. My guess is that - * most systems that don't have this probably default to only synching - * to disk when absolutely necessary. - */ -#ifndef MAP_NOSYNC -#define MAP_NOSYNC 0 -#endif - -void *apc_mmap(char *file_mask, size_t size) -{ - void* shmaddr; /* the shared memory address */ - - /* If no filename was provided, do an anonymous mmap */ - if(!file_mask || (file_mask && !strlen(file_mask))) { - shmaddr = (void *)mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANON, -1, 0); - } else { - int fd; - - /* - * If the filemask contains .shm we try to do a POSIX-compliant shared memory - * backed mmap which should avoid synchs on some platforms. At least on - * FreeBSD this implies MAP_NOSYNC and on Linux it is equivalent of mmap'ing - * a file in a mounted shmfs. For this to work on Linux you need to make sure - * you actually have shmfs mounted. Also on Linux, make sure the file_mask you - * pass in has a leading / and no other /'s. eg. /apc.shm.XXXXXX - * On FreeBSD these are mapped onto the regular filesystem so you can put whatever - * path you want here. - */ - if(strstr(file_mask,".shm")) { - mktemp(file_mask); - fd = shm_open(file_mask, O_CREAT|O_RDWR, S_IRUSR|S_IWUSR); - if(fd == -1) { - apc_eprint("apc_mmap: shm_open on %s failed:", file_mask); - return (void *)-1; - } - if (ftruncate(fd, size) < 0) { - close(fd); - shm_unlink(file_mask); - apc_eprint("apc_mmap: ftruncate failed:"); - return (void *)-1; - } - shmaddr = (void *)mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0); - shm_unlink(file_mask); - close(fd); - } - /* - * Support anonymous mmap through the /dev/zero interface as well - */ - else if(!strcmp(file_mask,"/dev/zero")) { - fd = open("/dev/zero", O_RDWR, S_IRUSR | S_IWUSR); - if(fd == -1) { - apc_eprint("apc_mmap: open on /dev/zero failed:"); - return (void *)-1; - } - shmaddr = (void *)mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0); - close(fd); - } - /* - * Otherwise we do a normal filesystem mmap - */ - else { - fd = mkstemp(file_mask); - if(fd == -1) { - apc_eprint("apc_mmap: mkstemp on %s failed:", file_mask); - return (void *)-1; - } - if (ftruncate(fd, size) < 0) { - close(fd); - unlink(file_mask); - apc_eprint("apc_mmap: ftruncate failed:"); - } - shmaddr = (void *)mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_NOSYNC, fd, 0); - close(fd); - unlink(file_mask); - } - } - if((long)shmaddr == -1) { - apc_eprint("apc_mmap: mmap failed:"); - } - return shmaddr; -} - -void apc_unmap(void* shmaddr, size_t size) -{ - if (munmap(shmaddr, size) < 0) { - apc_wprint("apc_unmap: munmap failed:"); - } -} - -#endif - -/* - * Local variables: - * tab-width: 4 - * c-basic-offset: 4 - * End: - * vim600: expandtab sw=4 ts=4 sts=4 fdm=marker - * vim<600: expandtab sw=4 ts=4 sts=4 - */