unix_misc.cpp
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上传日期:2007-06-06
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文件大小:5k
- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 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
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (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.
- *
- * 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 */