aa9fafe5c3
2007-04-11 Benoît Dejean <benoit@placenet.org> * *: Renamed all glibtop_init_xxx functions to _glibtop_init_xxx so they get internal visibility. * configure.in: Bumped version number. svn path=/trunk/; revision=2569
136 lines
3.5 KiB
C
136 lines
3.5 KiB
C
/* 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 <stdlib.h>
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#include <sys/systemcfg.h>
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#include <sys/sysinfo.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 <utils.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_SYS) + (1L << GLIBTOP_CPU_IDLE) +
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(1L << GLIBTOP_CPU_NICE) + (1 << GLIBTOP_CPU_FREQUENCY) +
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(1L << GLIBTOP_XCPU_TOTAL) + (1L << GLIBTOP_XCPU_USER) +
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(1L << GLIBTOP_XCPU_SYS) + (1L << GLIBTOP_XCPU_IDLE) +
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(1L << GLIBTOP_XCPU_NICE);
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/* Init function. */
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void
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_glibtop_init_cpu_p (glibtop *server)
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{
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off_t result;
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server->ncpu = _system_configuration.ncpus;
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if (server->ncpu == 1)
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{
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server->ncpu = 0; /* means single-processor, see glibtop.h */
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}
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result = _glibtop_get_kmem_offset(server, "sysinfo");
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if (result == -1)
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{
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return;
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}
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server->machine.sysinfo_offset = result;
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result = _glibtop_get_kmem_offset(server, "cpuinfo");
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if (result == -1)
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{
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server->sysdeps.cpu = 0;
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return;
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}
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server->machine.cpuinfo_offset = result;
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server->machine.cpuinfo = (struct cpuinfo*)calloc(_system_configuration.ncpus, sizeof(struct cpuinfo));
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server->sysdeps.cpu = _glibtop_sysdeps_cpu;
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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_p (glibtop *server, glibtop_cpu *buf)
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{
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int result;
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int cpu;
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struct sysinfo sysinfo;
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glibtop_init_p (server, (1L << GLIBTOP_SYSDEPS_CPU), 0);
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memset (buf, 0, sizeof (glibtop_cpu));
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result = _glibtop_get_kmem_info(server, server->machine.sysinfo_offset,
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&sysinfo, sizeof(struct sysinfo));
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if (result <= 0)
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{
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glibtop_error_io_r (server, "Cannot read sysinfo");
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return;
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}
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buf->idle = sysinfo.cpu[CPU_IDLE];
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buf->user = sysinfo.cpu[CPU_USER];
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buf->sys = sysinfo.cpu[CPU_KERNEL];
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buf->nice = sysinfo.cpu[CPU_WAIT];
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buf->total = buf->idle + buf->user + buf->sys + buf->nice ;
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result = _glibtop_get_kmem_info(server, server->machine.cpuinfo_offset,
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server->machine.cpuinfo,
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_system_configuration.ncpus
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* sizeof(struct cpuinfo));
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if (result <= 0)
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{
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glibtop_error_io_r (server, "Cannot read cpuinfo");
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return;
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}
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for (cpu = 0; cpu < MIN(GLIBTOP_NCPU, _system_configuration.ncpus); cpu++)
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{
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buf->xcpu_idle[cpu] =
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server->machine.cpuinfo[cpu].cpu[CPU_IDLE];
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buf->xcpu_user[cpu] =
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server->machine.cpuinfo[cpu].cpu[CPU_USER];
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buf->xcpu_sys[cpu] =
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server->machine.cpuinfo[cpu].cpu[CPU_KERNEL];
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buf->xcpu_nice[cpu] =
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server->machine.cpuinfo[cpu].cpu[CPU_WAIT];
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buf->xcpu_total[cpu] = buf->xcpu_idle[cpu] +
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buf->xcpu_user[cpu] +
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buf->xcpu_sys[cpu] +
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buf->xcpu_nice[cpu];
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}
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buf->frequency = sysconf(_SC_CLK_TCK);
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buf->flags = _glibtop_sysdeps_cpu;
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}
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