diff options
Diffstat (limited to 'sysdeps/linux/sem_limits.c')
-rw-r--r-- | sysdeps/linux/sem_limits.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/sysdeps/linux/sem_limits.c b/sysdeps/linux/sem_limits.c new file mode 100644 index 00000000..531b5f17 --- /dev/null +++ b/sysdeps/linux/sem_limits.c @@ -0,0 +1,86 @@ +/* $Id$ */ + +/* Copyright (C) 1998-99 Martin Baulig + This file is part of LibGTop 1.0. + + Contributed by Martin Baulig <martin@home-of-linux.org>, April 1998. + + LibGTop is free software; you can redistribute it and/or modify it + under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, + or (at your option) any later version. + + LibGTop 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 General Public License + for more details. + + You should have received a copy of the GNU General Public License + along with LibGTop; see the file COPYING. If not, write to the + Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. +*/ + +#include <glibtop/sem_limits.h> + +#include <sys/ipc.h> +#include <sys/sem.h> + +#ifdef _SEM_SEMUN_UNDEFINED + +/* glibc 2.1 will no longer defines semun, instead it defines + * _SEM_SEMUN_UNDEFINED so users can define semun on their own. + * Thanks to Albert K T Hui <avatar@deva.net>. */ + +union semun +{ + int val; + struct semid_ds *buf; + unsigned short int *array; + struct seminfo *__buf; +}; +#endif + +static unsigned long _glibtop_sysdeps_sem_limits = +(1L << GLIBTOP_IPC_SEMMAP) + (1L << GLIBTOP_IPC_SEMMNI) + +(1L << GLIBTOP_IPC_SEMMNS) + (1L << GLIBTOP_IPC_SEMMNU) + +(1L << GLIBTOP_IPC_SEMMSL) + (1L << GLIBTOP_IPC_SEMOPM) + +(1L << GLIBTOP_IPC_SEMUME) + (1L << GLIBTOP_IPC_SEMUSZ) + +(1L << GLIBTOP_IPC_SEMVMX) + (1L << GLIBTOP_IPC_SEMAEM); + +/* Init function. */ + +void +glibtop_init_sem_limits_s (glibtop *server) +{ + server->sysdeps.sem_limits = _glibtop_sysdeps_sem_limits; +} + +/* Provides information about sysv ipc limits. */ + +void +glibtop_get_sem_limits_s (glibtop *server, glibtop_sem_limits *buf) +{ + struct seminfo seminfo; + union semun arg; + + glibtop_init_s (&server, GLIBTOP_SYSDEPS_SEM_LIMITS, 0); + + memset (buf, 0, sizeof (glibtop_sem_limits)); + + buf->flags = _glibtop_sysdeps_sem_limits; + + arg.array = (ushort *) &seminfo; + semctl (0, 0, IPC_INFO, arg); + + buf->semmap = seminfo.semmap; + buf->semmni = seminfo.semmni; + buf->semmns = seminfo.semmns; + buf->semmnu = seminfo.semmnu; + buf->semmsl = seminfo.semmsl; + buf->semopm = seminfo.semopm; + buf->semume = seminfo.semume; + buf->semusz = seminfo.semusz; + buf->semvmx = seminfo.semvmx; + buf->semaem = seminfo.semaem; +} |