unix_misc.cpp
上传用户:dangjiwu
上传日期:2013-07-19
资源大小:42019k
文件大小:5k
- /* ***** BEGIN LICENSE BLOCK *****
- * Source last modified: $Id: unix_misc.cpp,v 1.2.32.3 2004/07/09 01:47:39 hubbe Exp $
- *
- * Portions Copyright (c) 1995-2004 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file,
- * are subject to the current version of the RealNetworks Public
- * Source License (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the current version of the RealNetworks Community
- * Source License (the "RCSL") available at
- * http://www.helixcommunity.org/content/rcsl, in which case the RCSL
- * will apply. You may also obtain the license terms directly from
- * RealNetworks. You may not use this file except in compliance with
- * the RPSL or, if you have a valid RCSL with RealNetworks applicable
- * to this file, the RCSL. Please see the applicable RPSL or RCSL for
- * the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * Alternatively, the contents of this file may be used under the
- * terms of the GNU General Public License Version 2 or later (the
- * "GPL") in which case the provisions of the GPL are applicable
- * instead of those above. If you wish to allow use of your version of
- * this file only under the terms of the GPL, and not to allow others
- * to use your version of this file under the terms of either the RPSL
- * or RCSL, indicate your decision by deleting the provisions above
- * and replace them with the notice and other provisions required by
- * the GPL. If you do not delete the provisions above, a recipient may
- * use your version of this file under the terms of any one of the
- * RPSL, the RCSL or the GPL.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the
- * portions it created.
- *
- * This file, and the files included with this file, is distributed
- * and made available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY
- * KIND, EITHER EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS
- * ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES
- * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET
- * ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #include <string.h>
- #include <sys/time.h>
- #include <sys/resource.h>
- #include <unistd.h>
- #include <stdio.h>
- #include <errno.h>
- #include <stdlib.h>
- #include "debug.h"
- // srobinson : What UNIX was this included for? - perhaps
- // we can replace this with an #ifndef for that platform
- //
- // dbrumley : I think sys/errono.h is needed on multiple platforms
- // (Linux 1&2, FreeBSD, SCO UnixWare, others?).
- //
- #if defined _SOLARIS || defined _IRIX || defined _OSF1 || defined _HPUX || defined _AIX || defined _BEOS || defined __QNXNTO__
- #include <errno.h>
- #include <string.h> // for strerror() prototype
- #else
- #include <sys/errno.h>
- #endif
- #include "unix_misc.h"
- #include "debug.h"
- #ifdef _BEOS
- #define MAX_BEOS_FDLIMIT 2000
- int setfdlimit(int limit)
- {
- return limit > MAX_BEOS_FDLIMIT ? MAX_BEOS_FDLIMIT : limit;
- }
- #else
- #if defined __aix__
- int setfdlimit(int limit)
- {
- return limit > MAX_AIX_FDLIMIT ? MAX_AIX_FDLIMIT : limit;
- }
- #else
- #if defined _FREEBSD || defined _OPENBSD || defined _NETBSD
- #define RLIM_FMT "%qd"
- #else
- #define RLIM_FMT "%d"
- #endif /* FreeBSD, *BSD, etc. */
- int
- setfdlimit(int limit)
- {
- struct rlimit rl;
- int reallimit = limit;
- if (getrlimit(FDLIMIT, &rl) < 0) {
- DPRINTF(D_INFO, ("Can not get resource limit: %sn",
- strerror(errno)));
- return limit;
- }
-
- DPRINTF(D_INFO, ("cur: " RLIM_FMT ", max: " RLIM_FMT "n",
- rl.rlim_cur, rl.rlim_max));
- /*
- * Can't get more than the system max limit
- * so adjust the requested limit down.
- */
- if (limit > rl.rlim_max)
- limit = rl.rlim_max;
- /*
- * Set the new limit if it is higher than the current limit
- */
- if (rl.rlim_cur < limit) {
- rl.rlim_cur = limit;
- if (setrlimit(FDLIMIT, &rl) < 0) {
- DPRINTF(D_INFO, ("Can not set resource limit: %sn",
- strerror(errno)));
- }
- rl.rlim_max = limit;
- if (setrlimit(FDLIMIT, &rl) < 0) {
- DPRINTF(D_INFO, ("Can not set resource limit: %sn",
- strerror(errno)));
- }
- getrlimit(FDLIMIT, &rl);
- }
- #if defined _SUN || defined _SOLARIS
- /* Solaris has a broken getrlimit. We'll try it the hard way */
- while (rl.rlim_cur < reallimit)
- {
- rl.rlim_cur += 512;
- rl.rlim_max = rl.rlim_cur;
- setrlimit(FDLIMIT, &rl);
- }
- #endif
- DPRINTF(D_INFO, ("cur: " RLIM_FMT ", max: " RLIM_FMT "n",
- rl.rlim_cur, rl.rlim_max));
- return rl.rlim_cur;
- }
- #endif /* __aix__ */
- #endif /* _BEOS */