117 строки
3.5 KiB
C
117 строки
3.5 KiB
C
/*
|
|
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
|
|
* University Research and Technology
|
|
* Corporation. All rights reserved.
|
|
* Copyright (c) 2004-2005 The University of Tennessee and The University
|
|
* of Tennessee Research Foundation. All rights
|
|
* reserved.
|
|
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
|
|
* University of Stuttgart. All rights reserved.
|
|
* Copyright (c) 2004-2005 The Regents of the University of California.
|
|
* All rights reserved.
|
|
* Copyright (c) 2007 Cisco Systems, Inc. All rights reserved.
|
|
* $COPYRIGHT$
|
|
*
|
|
* Additional copyrights may follow
|
|
*
|
|
* $HEADER$
|
|
*
|
|
* This file is only here because some platforms have a broken strncpy
|
|
* (e.g., Itanium with RedHat Advanced Server glibc).
|
|
*/
|
|
|
|
#include "opal_config.h"
|
|
|
|
#ifdef HAVE_STRING_H
|
|
#include <string.h>
|
|
#endif
|
|
|
|
#include <errno.h>
|
|
#ifdef HAVE_SYS_TYPES_H
|
|
#include <sys/types.h>
|
|
#endif
|
|
#ifdef HAVE_SYS_TIME_H
|
|
#include <sys/time.h>
|
|
#endif
|
|
#ifdef HAVE_SYS_RESOURCE_H
|
|
#include <sys/resource.h>
|
|
#endif
|
|
|
|
#include "opal/constants.h"
|
|
#include "opal/mca/base/mca_base_param.h"
|
|
|
|
#include "opal/util/sys_limits.h"
|
|
#include "opal/util/output.h"
|
|
|
|
|
|
/*
|
|
* Create and initialize storage for the system limits
|
|
*/
|
|
OPAL_DECLSPEC opal_sys_limits_t opal_sys_limits = {
|
|
/* initialized = */ false,
|
|
/* num_files = */ -1,
|
|
/* num_procs = */ -1,
|
|
/* file_size = */ 0
|
|
};
|
|
|
|
int opal_util_init_sys_limits(void)
|
|
{
|
|
#ifndef __WINDOWS__
|
|
struct rlimit rlim, rlim_set;
|
|
#endif
|
|
int value;
|
|
bool set_lims;
|
|
|
|
mca_base_param_reg_int_name("opal", "set_max_sys_limits",
|
|
"Set to non-zero to automatically set any system-imposed limits to the maximum allowed",
|
|
false, false, (int)false, &value);
|
|
set_lims = OPAL_INT_TO_BOOL(value);
|
|
|
|
#ifdef __WINDOWS__
|
|
/* George: please insert whatever is needed here someday */
|
|
#else
|
|
/* get/set the system limits on number of files we can have open */
|
|
if (0 <= getrlimit (RLIMIT_NOFILE, &rlim)) {
|
|
if (set_lims) {
|
|
rlim_set.rlim_cur = rlim.rlim_max;
|
|
rlim_set.rlim_max = rlim.rlim_max;
|
|
if (0 <= setrlimit (RLIMIT_NOFILE, &rlim_set)) {
|
|
rlim.rlim_cur = rlim.rlim_max;
|
|
}
|
|
}
|
|
opal_sys_limits.num_files = rlim.rlim_cur;
|
|
}
|
|
|
|
#if HAVE_DECL_RLIMIT_NPROC
|
|
/* get/set the system limits on number of child procs we can have open */
|
|
if (0 <= getrlimit (RLIMIT_NPROC, &rlim)) {
|
|
if (set_lims) {
|
|
rlim_set.rlim_cur = rlim.rlim_max;
|
|
rlim_set.rlim_max = rlim.rlim_max;
|
|
if (0 <= setrlimit (RLIMIT_NPROC, &rlim_set)) {
|
|
rlim.rlim_cur = rlim.rlim_max;
|
|
}
|
|
}
|
|
opal_sys_limits.num_procs = rlim.rlim_cur;
|
|
}
|
|
#endif
|
|
|
|
/* get/set the system limits on max file size we can create */
|
|
if (0 <= getrlimit (RLIMIT_FSIZE, &rlim)) {
|
|
if (set_lims) {
|
|
rlim_set.rlim_cur = rlim.rlim_max;
|
|
rlim_set.rlim_max = rlim.rlim_max;
|
|
if (0 <= setrlimit (RLIMIT_FSIZE, &rlim_set)) {
|
|
rlim.rlim_cur = rlim.rlim_max;
|
|
}
|
|
}
|
|
opal_sys_limits.file_size = rlim.rlim_cur;
|
|
}
|
|
|
|
/* indicate we initialized the limits structure */
|
|
opal_sys_limits.initialized = true;
|
|
#endif
|
|
|
|
return OPAL_SUCCESS;
|
|
}
|