glibc/misc/getsysstats.c
Adhemerval Zanella 472894d2cf malloc: Use __get_nprocs on arena_get2 (BZ 30945)
This restore the 2.33 semantic for arena_get2.  It was changed by
11a02b035b to avoid arena_get2 call malloc (back when __get_nproc
was refactored to use an scratch_buffer - 903bc7dcc2).  The
__get_nproc was refactored over then and now it also avoid to call
malloc.

The 11a02b035b did not take in consideration any performance
implication, which should have been discussed properly.  The
__get_nprocs_sched is still used as a fallback mechanism if procfs
and sysfs is not acessible.

Checked on x86_64-linux-gnu.
Reviewed-by: DJ Delorie <dj@redhat.com>
2023-11-22 09:39:29 -03:00

71 lines
1.9 KiB
C

/* getsysstats - Determine various system internal values, stub version.
Copyright (C) 1996-2023 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <sys/sysinfo.h>
int
__get_nprocs_conf (void)
{
/* We don't know how to determine the number. Simply return always 1. */
return 1;
}
libc_hidden_def (__get_nprocs_conf)
weak_alias (__get_nprocs_conf, get_nprocs_conf)
link_warning (get_nprocs_conf, "warning: get_nprocs_conf will always return 1")
int
__get_nprocs (void)
{
/* We don't know how to determine the number. Simply return always 1. */
return 1;
}
libc_hidden_def (__get_nprocs)
weak_alias (__get_nprocs, get_nprocs)
link_warning (get_nprocs, "warning: get_nprocs will always return 1")
long int
__get_phys_pages (void)
{
/* We have no general way to determine this value. */
__set_errno (ENOSYS);
return -1;
}
libc_hidden_def (__get_phys_pages)
weak_alias (__get_phys_pages, get_phys_pages)
stub_warning (get_phys_pages)
long int
__get_avphys_pages (void)
{
/* We have no general way to determine this value. */
__set_errno (ENOSYS);
return -1;
}
libc_hidden_def (__get_avphys_pages)
weak_alias (__get_avphys_pages, get_avphys_pages)
stub_warning (get_avphys_pages)