New upstream version 2.3.4
This commit is contained in:
parent
e7bdd1c6c6
commit
de72f6f588
556 changed files with 90432 additions and 53391 deletions
179
gl/getloadavg.c
179
gl/getloadavg.c
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@ -1,6 +1,6 @@
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/* Get the system load averages.
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Copyright (C) 1985-1989, 1991-1995, 1997, 1999-2000, 2003-2013 Free Software
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Copyright (C) 1985-1989, 1991-1995, 1997, 1999-2000, 2003-2023 Free Software
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Foundation, Inc.
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NOTE: The canonical source of this file is maintained with gnulib.
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@ -8,7 +8,7 @@
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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@ -17,7 +17,7 @@
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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/* Compile-time symbols that this file uses:
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@ -47,29 +47,25 @@
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N_NAME_POINTER The nlist n_name element is a pointer,
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not an array.
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HAVE_STRUCT_NLIST_N_UN_N_NAME 'n_un.n_name' is member of 'struct nlist'.
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LINUX_LDAV_FILE [__linux__, __CYGWIN__]: File containing
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load averages.
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LINUX_LDAV_FILE [__linux__, __ANDROID__, __CYGWIN__]: File
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containing load averages.
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Specific system predefines this file uses, aside from setting
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default values if not emacs:
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apollo
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BSD Real BSD, not just BSD-like.
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convex
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DGUX
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eunice UNIX emulator under VMS.
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hpux
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__MSDOS__ No-op for MSDOS.
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NeXT
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sgi
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sequent Sequent Dynix 3.x.x (BSD)
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_SEQUENT_ Sequent DYNIX/ptx 1.x.x (SYSV)
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sony_news NEWS-OS (works at least for 4.1C)
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UMAX
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UMAX4_3
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VMS
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WINDOWS32 No-op for Windows95/NT.
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__linux__ Linux: assumes /proc file system mounted.
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_WIN32 Native Windows (possibly also defined on Cygwin)
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__linux__, __ANDROID__ Linux: assumes /proc file system mounted.
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Support from Michael K. Johnson.
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__CYGWIN__ Cygwin emulates linux /proc/loadavg.
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__NetBSD__ NetBSD: assumes /kern file system mounted.
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@ -86,7 +82,6 @@
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#include <stdlib.h>
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#include <errno.h>
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#include <stdbool.h>
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#include <stdio.h>
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# include <sys/types.h>
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@ -97,9 +92,8 @@
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# include "intprops.h"
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# if !defined (BSD) && defined (ultrix)
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/* Ultrix behaves like BSD on Vaxen. */
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# define BSD
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# if defined _WIN32 && ! defined __CYGWIN__ && ! defined WINDOWS32
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# define WINDOWS32
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# endif
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# ifdef NeXT
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@ -141,10 +135,6 @@
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# define MORE_BSD
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# endif
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# if defined (ultrix) && defined (mips)
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# define decstation
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# endif
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# if defined (__SVR4) && !defined (SVR4)
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# define SVR4
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# endif
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@ -168,13 +158,6 @@
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# include <sys/table.h>
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# endif
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/* UTek's /bin/cc on the 4300 has no architecture specific cpp define by
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default, but _MACH_IND_SYS_TYPES is defined in <sys/types.h>. Combine
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that with a couple of other things and we'll have a unique match. */
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# if !defined (tek4300) && defined (unix) && defined (m68k) && defined (mc68000) && defined (mc68020) && defined (_MACH_IND_SYS_TYPES)
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# define tek4300 /* Define by emacs, but not by other users. */
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# endif
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/* VAX C can't handle multi-line #ifs, or lines longer than 256 chars. */
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# ifndef LOAD_AVE_TYPE
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@ -187,14 +170,6 @@
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# define LOAD_AVE_TYPE long
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# endif
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# ifdef decstation
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# define LOAD_AVE_TYPE long
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# endif
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# ifdef _SEQUENT_
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# define LOAD_AVE_TYPE long
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# endif
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# ifdef sgi
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# define LOAD_AVE_TYPE long
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# endif
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@ -203,41 +178,14 @@
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# define LOAD_AVE_TYPE long
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# endif
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# ifdef sony_news
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# define LOAD_AVE_TYPE long
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# endif
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# ifdef sequent
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# define LOAD_AVE_TYPE long
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# endif
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# ifdef OSF_ALPHA
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# define LOAD_AVE_TYPE long
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# endif
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# if defined (ardent) && defined (titan)
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# define LOAD_AVE_TYPE long
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# endif
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# ifdef tek4300
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# define LOAD_AVE_TYPE long
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# endif
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# if defined (alliant) && defined (i860) /* Alliant FX/2800 */
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# define LOAD_AVE_TYPE long
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# endif
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# if defined _AIX && ! defined HAVE_LIBPERFSTAT
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# define LOAD_AVE_TYPE long
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# endif
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# ifdef convex
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# define LOAD_AVE_TYPE double
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# ifndef LDAV_CVT
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# define LDAV_CVT(n) (n)
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# endif
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# endif
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# endif /* No LOAD_AVE_TYPE. */
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# ifdef OSF_ALPHA
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@ -247,13 +195,6 @@
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# define FSCALE 1024.0
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# endif
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# if defined (alliant) && defined (i860) /* Alliant FX/2800 */
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/* <sys/param.h> defines an incorrect value for FSCALE on an
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Alliant FX/2800 Concentrix 2.2, according to ghazi@noc.rutgers.edu. */
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# undef FSCALE
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# define FSCALE 100.0
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# endif
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# ifndef FSCALE
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@ -263,25 +204,17 @@
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# define FSCALE 2048.0
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# endif
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# if defined (MIPS) || defined (SVR4) || defined (decstation)
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# if defined (MIPS) || defined (SVR4)
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# define FSCALE 256
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# endif
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# if defined (sgi) || defined (sequent)
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# if defined (sgi)
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/* Sometimes both MIPS and sgi are defined, so FSCALE was just defined
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above under #ifdef MIPS. But we want the sgi value. */
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# undef FSCALE
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# define FSCALE 1000.0
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# endif
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# if defined (ardent) && defined (titan)
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# define FSCALE 65536.0
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# endif
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# ifdef tek4300
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# define FSCALE 100.0
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# endif
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# if defined _AIX && !defined HAVE_LIBPERFSTAT
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# define FSCALE 65536.0
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# endif
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@ -303,28 +236,22 @@
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# endif
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# if !defined (KERNEL_FILE) && defined (sequent)
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# define KERNEL_FILE "/dynix"
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# endif
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# if !defined (KERNEL_FILE) && defined (hpux)
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# define KERNEL_FILE "/hp-ux"
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# endif
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# if !defined (KERNEL_FILE) && (defined (_SEQUENT_) || defined (MIPS) || defined (SVR4) || defined (ISC) || defined (sgi) || (defined (ardent) && defined (titan)))
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# if !defined (KERNEL_FILE) && (defined (MIPS) || defined (SVR4) || defined (ISC) || defined (sgi))
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# define KERNEL_FILE "/unix"
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# endif
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# if !defined (LDAV_SYMBOL) && defined (alliant)
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# define LDAV_SYMBOL "_Loadavg"
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# endif
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# if !defined (LDAV_SYMBOL) && ((defined (hpux) && !defined (hp9000s300)) || defined (_SEQUENT_) || defined (SVR4) || defined (ISC) || defined (sgi) || (defined (ardent) && defined (titan)) || (defined (_AIX) && !defined(HAVE_LIBPERFSTAT)))
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# if !defined (LDAV_SYMBOL) && (defined (hpux) || defined (SVR4) || defined (ISC) || defined (sgi) || (defined (_AIX) && !defined(HAVE_LIBPERFSTAT)))
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# define LDAV_SYMBOL "avenrun"
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# endif
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# include <unistd.h>
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# ifdef HAVE_UNISTD_H
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# include <unistd.h>
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# endif
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/* LOAD_AVE_TYPE should only get defined if we're going to use the
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nlist method. */
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@ -335,7 +262,7 @@
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# ifdef LOAD_AVE_TYPE
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# ifndef __VMS
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# ifndef __linux__
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# if !(defined __linux__ || defined __ANDROID__)
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# ifndef NLIST_STRUCT
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# include <a.out.h>
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# else /* NLIST_STRUCT */
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@ -358,7 +285,7 @@
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# ifndef LDAV_SYMBOL
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# define LDAV_SYMBOL "_avenrun"
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# endif /* LDAV_SYMBOL */
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# endif /* __linux__ */
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# endif /* __linux__ || __ANDROID__ */
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# else /* __VMS */
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@ -431,7 +358,8 @@
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# include <sys/dg_sys_info.h>
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# endif
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# if (defined __linux__ || defined __CYGWIN__ || defined SUNOS_5 \
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# if (defined __linux__ || defined __ANDROID__ \
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|| defined __CYGWIN__ || defined SUNOS_5 \
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|| (defined LOAD_AVE_TYPE && ! defined __VMS))
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# include <fcntl.h>
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# endif
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@ -460,7 +388,7 @@ static bool getloadavg_initialized;
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/* Offset in kmem to seek to read load average, or 0 means invalid. */
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static long offset;
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# if ! defined __VMS && ! defined sgi && ! defined __linux__
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# if ! defined __VMS && ! defined sgi && ! (defined __linux__ || defined __ANDROID__)
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static struct nlist name_list[2];
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# endif
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@ -495,17 +423,17 @@ getloadavg (double loadavg[], int nelem)
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int saved_errno;
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kc = kstat_open ();
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if (kc == 0)
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if (kc == NULL)
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return -1;
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ksp = kstat_lookup (kc, "unix", 0, "system_misc");
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if (ksp == 0)
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if (ksp == NULL)
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return -1;
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if (kstat_read (kc, ksp, 0) == -1)
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return -1;
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kn = kstat_data_lookup (ksp, "avenrun_1min");
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if (kn == 0)
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if (kn == NULL)
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{
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/* Return -1 if no load average information is available. */
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nelem = 0;
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@ -518,14 +446,14 @@ getloadavg (double loadavg[], int nelem)
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if (nelem >= 2)
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{
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kn = kstat_data_lookup (ksp, "avenrun_5min");
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if (kn != 0)
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if (kn != NULL)
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{
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loadavg[elem++] = (double) kn->value.ul / FSCALE;
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if (nelem >= 3)
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{
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kn = kstat_data_lookup (ksp, "avenrun_15min");
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if (kn != 0)
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if (kn != NULL)
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loadavg[elem++] = (double) kn->value.ul / FSCALE;
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}
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}
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@ -570,8 +498,8 @@ getloadavg (double loadavg[], int nelem)
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}
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# endif
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# if !defined (LDAV_DONE) && (defined (__linux__) || defined (__CYGWIN__))
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/* Linux without glibc, Cygwin */
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# if !defined (LDAV_DONE) && (defined __linux__ || defined __ANDROID__ || defined __CYGWIN__)
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/* Linux without glibc, Android, Cygwin */
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# define LDAV_DONE
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# undef LOAD_AVE_TYPE
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@ -583,7 +511,7 @@ getloadavg (double loadavg[], int nelem)
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char const *ptr = ldavgbuf;
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int fd, count, saved_errno;
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fd = open (LINUX_LDAV_FILE, O_RDONLY);
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fd = open (LINUX_LDAV_FILE, O_RDONLY | O_CLOEXEC);
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if (fd == -1)
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return -1;
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count = read (fd, ldavgbuf, sizeof ldavgbuf - 1);
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@ -621,12 +549,12 @@ getloadavg (double loadavg[], int nelem)
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for (ptr++; '0' <= *ptr && *ptr <= '9'; ptr++)
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numerator = 10 * numerator + (*ptr - '0'), denominator *= 10;
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loadavg[elem++] = numerator / denominator;
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loadavg[elem] = numerator / denominator;
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}
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return elem;
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# endif /* __linux__ || __CYGWIN__ */
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# endif /* __linux__ || __ANDROID__ || __CYGWIN__ */
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# if !defined (LDAV_DONE) && defined (__NetBSD__) /* NetBSD < 0.9 */
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# define LDAV_DONE
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@ -638,15 +566,22 @@ getloadavg (double loadavg[], int nelem)
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unsigned long int load_ave[3], scale;
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int count;
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FILE *fp;
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fp = fopen (NETBSD_LDAV_FILE, "r");
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if (fp == NULL)
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return -1;
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count = fscanf (fp, "%lu %lu %lu %lu\n",
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char readbuf[4 * INT_BUFSIZE_BOUND (unsigned long int) + 1];
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int fd = open (NETBSD_LDAV_FILE, O_RDONLY | O_CLOEXEC);
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if (fd < 0)
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return fd;
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int nread = read (fd, readbuf, sizeof readbuf - 1);
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int err = errno;
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close (fd);
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if (nread < 0)
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{
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errno = err;
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return -1;
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}
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readbuf[nread] = '\0';
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count = sscanf (readbuf, "%lu %lu %lu %lu\n",
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&load_ave[0], &load_ave[1], &load_ave[2],
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&scale);
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(void) fclose (fp);
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if (count != 4)
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{
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errno = ENOTSUP;
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@ -915,7 +850,7 @@ getloadavg (double loadavg[], int nelem)
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# ifndef SUNOS_5
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if (
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# if !(defined (_AIX) && !defined (ps2))
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# if !defined (_AIX)
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nlist (KERNEL_FILE, name_list)
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# else /* _AIX */
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knlist (name_list, 1, sizeof (name_list[0]))
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@ -940,33 +875,17 @@ getloadavg (double loadavg[], int nelem)
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if (!getloadavg_initialized)
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{
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# ifndef SUNOS_5
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/* Set the channel to close on exec, so it does not
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litter any child's descriptor table. */
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# ifndef O_CLOEXEC
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# define O_CLOEXEC 0
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# endif
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int fd = open ("/dev/kmem", O_RDONLY | O_CLOEXEC);
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if (0 <= fd)
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{
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# if F_DUPFD_CLOEXEC
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if (fd <= STDERR_FILENO)
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{
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int fd1 = fcntl (fd, F_DUPFD_CLOEXEC, STDERR_FILENO + 1);
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close (fd);
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fd = fd1;
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}
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# endif
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if (0 <= fd)
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{
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channel = fd;
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getloadavg_initialized = true;
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}
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channel = fd;
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getloadavg_initialized = true;
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}
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# else /* SUNOS_5 */
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/* We pass 0 for the kernel, corefile, and swapfile names
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to use the currently running kernel. */
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kd = kvm_open (0, 0, 0, O_RDONLY, 0);
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if (kd != 0)
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if (kd != NULL)
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{
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/* nlist the currently running kernel. */
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kvm_nlist (kd, name_list);
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