08fd95d253
* Correct calculation of CPU time. * Fix a bug on newer versions of FreeBSD where computing the process map leads to a tight error loop. * Add support for the new procstat API to obtain the list of open files and cwd. * Use kvm_openfiles instead of kvm_open to better handle error messages. * Split some modules out into non-suid modules. * Properly determine the number of CPUs. https://bugzilla.gnome.org/show_bug.cgi?id=605431
136 lines
3.8 KiB
C
136 lines
3.8 KiB
C
/* Copyright (C) 1998 Joshua Sled
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This file is part of LibGTop 1.0.
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Contributed by Joshua Sled <jsled@xcf.berkeley.edu>, July 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.h>
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#include <glibtop/error.h>
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#include <glibtop/cpu.h>
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#include <glibtop_suid.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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(1L << GLIBTOP_CPU_IRQ);
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static const unsigned long _glibtop_sysdeps_cpu_smp =
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(1L << GLIBTOP_XCPU_TOTAL) + (1L << GLIBTOP_XCPU_USER) +
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(1L << GLIBTOP_XCPU_NICE) + (1L << GLIBTOP_XCPU_SYS) +
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(1L << GLIBTOP_XCPU_IDLE) + (1L << GLIBTOP_XCPU_IRQ);
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/* Init function. */
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void
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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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}
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/* Provides information about cpu usage. */
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void
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glibtop_get_cpu_s (glibtop *server, glibtop_cpu *buf)
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{
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long cpts [CPUSTATES];
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long *cp_times = NULL;
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struct clockinfo ci;
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size_t length;
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int ncpu, i;
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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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length = sizeof (cpts);
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if (sysctlbyname ("kern.cp_time", cpts, &length, NULL, 0)) {
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glibtop_warn_io_r (server, "sysctl (kern.cp_time)");
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return;
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}
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/* Get the clockrate data */
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length = sizeof (ci);
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if (sysctlbyname ("kern.clockrate", &ci, &length, NULL, 0)) {
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glibtop_warn_io_r (server, "sysctl (kern.cockrate)");
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return;
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}
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length = 0;
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if (sysctlbyname ("kern.cp_times", NULL, &length, NULL, 0) == 0) {
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cp_times = g_malloc (length);
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length = sizeof(long) * CPUSTATES * (length / (sizeof(long) * CPUSTATES));
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if (sysctlbyname ("kern.cp_times", cp_times, &length, NULL, 0)) {
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g_free (cp_times);
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cp_times = NULL;
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}
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}
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/* set user time */
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buf->user = cpts [CP_USER];
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/* set nice time */
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buf->nice = cpts [CP_NICE];
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/* set sys time */
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buf->sys = cpts [CP_SYS];
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/* set idle time */
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buf->idle = cpts [CP_IDLE];
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/* set irq */
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buf->irq = cpts [CP_INTR];
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/* set frequency */
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buf->frequency = (ci.stathz ? ci.stathz : ci.hz);
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/* set total */
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buf->total = cpts [CP_USER] + cpts [CP_NICE] \
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+ cpts [CP_SYS] + cpts [CP_IDLE] + cpts [CP_INTR];
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ncpu = server->ncpu + 1;
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for (i = 0; i < ncpu; i++) {
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if (cp_times) {
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buf->xcpu_user[i] = cp_times[i * CPUSTATES + CP_USER];
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buf->xcpu_nice[i] = cp_times[i * CPUSTATES + CP_NICE];
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buf->xcpu_sys[i] = cp_times[i * CPUSTATES + CP_SYS];
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buf->xcpu_idle[i] = cp_times[i * CPUSTATES + CP_IDLE];
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buf->xcpu_irq[i] = cp_times[i * CPUSTATES + CP_INTR];
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} else {
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buf->xcpu_user[i] = cpts [CP_USER] / ncpu;
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buf->xcpu_nice[i] = cpts [CP_NICE] / ncpu;
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buf->xcpu_sys[i] = cpts [CP_SYS] / ncpu;
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buf->xcpu_idle[i] = cpts [CP_IDLE] / ncpu;
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buf->xcpu_irq[i] = cpts [CP_INTR] / ncpu;
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}
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buf->xcpu_total[i] = buf->xcpu_user[i] + buf->xcpu_nice[i] \
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+ buf->xcpu_sys[i] + buf->xcpu_idle[i] \
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+ buf->xcpu_irq[i];
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}
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g_free (cp_times);
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/* Set the flags last. */
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buf->flags = _glibtop_sysdeps_cpu;
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if (ncpu > 1) {
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buf->flags |= _glibtop_sysdeps_cpu_smp;
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}
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}
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