18af9297ea
1999-12-11 Martin Baulig <martin@home-of-linux.org> This is a larger source-incompatible commit, but it'll make it easier to write automatically generated code (for instance for scripting languages). Renamed all constants for the flags field to match the field names from the features.def and structures.def where this was not already the case. * include/glibtop/cpu.h: s/GLIBTOP_XCPU_/GLIBTOP_CPU_XCPU_/g. * include/glibtop/shm_limits.h: s/GLIBTOP_IPC_/GLIBTOP_SHM_LIMITS_/g. * include/glibtop/sem_limits.h: s/GLIBTOP_IPC_/GLIBTOP_SEM_LIMITS_/g. * include/glibtop/msg_limits.h: s/GLIBTOP_IPC_/GLIBTOP_MSG_LIMITS_/g.
121 lines
2.9 KiB
C
121 lines
2.9 KiB
C
/* $Id$ */
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/* Copyright (C) 1998-99 Martin Baulig
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This file is part of LibGTop 1.0.
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Contributed by Martin Baulig <martin@home-of-linux.org>, April 1998.
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LibGTop is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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LibGTop is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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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 LibGTop; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA.
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*/
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#include <config.h>
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#include <glibtop/error.h>
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#include <glibtop/cpu.h>
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static const unsigned long _glibtop_sysdeps_cpu =
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(1L << GLIBTOP_CPU_TOTAL) + (1L << GLIBTOP_CPU_USER) +
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(1L << GLIBTOP_CPU_NICE) + (1L << GLIBTOP_CPU_SYS) +
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(1L << GLIBTOP_CPU_IDLE) + (1L << GLIBTOP_CPU_FREQUENCY);
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static const unsigned long _glibtop_sysdeps_cpu_smp =
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(1L << GLIBTOP_CPU_XCPU_TOTAL) + (1L << GLIBTOP_CPU_XCPU_USER) +
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(1L << GLIBTOP_CPU_XCPU_NICE) + (1L << GLIBTOP_CPU_XCPU_SYS) +
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(1L << GLIBTOP_CPU_XCPU_IDLE);
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/* Init function. */
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int
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glibtop_init_cpu_s (glibtop *server)
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{
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server->sysdeps.cpu = _glibtop_sysdeps_cpu;
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if (server->ncpu)
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server->sysdeps.cpu |= _glibtop_sysdeps_cpu_smp;
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return 0;
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}
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/* Provides information about cpu usage. */
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#define FILENAME "/proc/stat"
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int
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glibtop_get_cpu_s (glibtop *server, glibtop_cpu *buf)
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{
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char buffer [BUFSIZ], *p;
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int fd, len, i;
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u_int64_t total;
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glibtop_init_s (&server, GLIBTOP_SYSDEPS_CPU, 0);
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memset (buf, 0, sizeof (glibtop_cpu));
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fd = open (FILENAME, O_RDONLY);
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if (fd < 0) {
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glibtop_warn_io_r (server, "open (%s)", FILENAME);
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return -1;
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}
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len = read (fd, buffer, BUFSIZ-1);
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if (len < 0) {
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close (fd);
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glibtop_warn_io_r (server, "read (%s)", FILENAME);
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return -1;
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}
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close (fd);
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buffer [len] = '\0';
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p = skip_token (buffer); /* "cpu" */
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buf->user = strtoul (p, &p, 0);
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buf->nice = strtoul (p, &p, 0);
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buf->sys = strtoul (p, &p, 0);
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buf->idle = strtoul (p, &p, 0);
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total = buf->user;
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total += buf->nice;
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total += buf->sys;
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total += buf->idle;
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buf->total = total;
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buf->frequency = 100;
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buf->flags = _glibtop_sysdeps_cpu;
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for (i = 0; i < server->ncpu; i++) {
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if (strncmp (p+1, "cpu", 3) || !isdigit (p [4]))
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break;
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p += 6;
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buf->xcpu_user [i] = strtoul (p, &p, 0);
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buf->xcpu_nice [i] = strtoul (p, &p, 0);
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buf->xcpu_sys [i] = strtoul (p, &p, 0);
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buf->xcpu_idle [i] = strtoul (p, &p, 0);
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total = buf->xcpu_user [i];
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total += buf->xcpu_nice [i];
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total += buf->xcpu_sys [i];
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total += buf->xcpu_idle [i];
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buf->xcpu_total [i] = total;
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}
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buf->flags |= _glibtop_sysdeps_cpu_smp;
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return 0;
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}
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