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193 lines
4.3 KiB
193 lines
4.3 KiB
/*
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KSysGuard, the KDE System Guard
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Copyright (c) 1999 Chris Schlaeger <cs@kde.org>
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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 2 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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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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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, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include <sys/param.h>
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#include <sys/sysctl.h>
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#include <sys/dkstat.h>
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#include <sys/sched.h> /* CPUSTATES */
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#include <fcntl.h>
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#include <nlist.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include "CPU.h"
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#include "Command.h"
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#include "ksysguardd.h"
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void percentages(int cnt, int *out, u_int64_t *new, u_int64_t *old, u_int64_t *diffs);
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u_int64_t cp_time[CPUSTATES];
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u_int64_t cp_old[CPUSTATES];
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u_int64_t cp_diff[CPUSTATES];
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int cpu_states[CPUSTATES];
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void
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initCpuInfo(struct SensorModul* sm)
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{
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/* Total CPU load */
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registerMonitor("cpu/user", "integer", printCPUUser,
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printCPUUserInfo, sm);
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registerMonitor("cpu/nice", "integer", printCPUNice,
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printCPUNiceInfo, sm);
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registerMonitor("cpu/sys", "integer", printCPUSys,
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printCPUSysInfo, sm);
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registerMonitor("cpu/idle", "integer", printCPUIdle,
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printCPUIdleInfo, sm);
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updateCpuInfo();
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}
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void
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exitCpuInfo(void)
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{
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}
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int
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updateCpuInfo(void)
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{
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int mib[2];
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size_t size;
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mib[0] = CTL_KERN;
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mib[1] = KERN_CP_TIME;
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size = sizeof(cp_time[0]) * CPUSTATES;
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sysctl(mib, 2, cp_time, &size, NULL, 0);
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percentages(CPUSTATES, cpu_states, cp_time, cp_old, cp_diff);
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return (0);
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}
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void
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printCPUUser(const char* cmd)
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{
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fprintf(CurrentClient, "%d\n", cpu_states[CP_USER]/10);
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}
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void
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printCPUUserInfo(const char* cmd)
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{
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fprintf(CurrentClient, "CPU User Load\t0\t100\t%%\n");
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}
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void
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printCPUNice(const char* cmd)
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{
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fprintf(CurrentClient, "%d\n", cpu_states[CP_NICE]/10);
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}
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void
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printCPUNiceInfo(const char* cmd)
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{
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fprintf(CurrentClient, "CPU Nice Load\t0\t100\t%%\n");
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}
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void
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printCPUSys(const char* cmd)
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{
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fprintf(CurrentClient, "%d\n", cpu_states[CP_SYS]/10);
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}
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void
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printCPUSysInfo(const char* cmd)
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{
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fprintf(CurrentClient, "CPU System Load\t0\t100\t%%\n");
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}
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void
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printCPUIdle(const char* cmd)
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{
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fprintf(CurrentClient, "%d\n", cpu_states[CP_IDLE]/10);
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}
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void
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printCPUIdleInfo(const char* cmd)
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{
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fprintf(CurrentClient, "CPU Idle Load\t0\t100\t%%\n");
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}
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/* The part ripped from top... */
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/*
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* Top users/processes display for Unix
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* Version 3
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*
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* This program may be freely redistributed,
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* but this entire comment MUST remain intact.
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*
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* Copyright (c) 1984, 1989, William LeFebvre, Rice University
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* Copyright (c) 1989, 1990, 1992, William LeFebvre, Northwestern University
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*/
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/*
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* percentages(cnt, out, new, old, diffs) - calculate percentage change
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* between array "old" and "new", putting the percentages i "out".
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* "cnt" is size of each array and "diffs" is used for scratch space.
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* The array "old" is updated on each call.
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* The routine assumes modulo arithmetic. This function is especially
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* useful on BSD mchines for calculating cpu state percentages.
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*/
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void percentages(cnt, out, new, old, diffs)
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int cnt;
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int *out;
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u_int64_t *new;
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u_int64_t *old;
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u_int64_t *diffs;
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{
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int i;
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u_int64_t change;
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u_int64_t total_change;
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u_int64_t *dp;
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u_int64_t half_total;
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/* initialization */
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total_change = 0;
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dp = diffs;
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/* calculate changes for each state and the overall change */
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for (i = 0; i < cnt; i++)
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{
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/*
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* Don't worry about wrapping - even at hz=1GHz, a
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* u_int64_t will last at least 544 years.
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*/
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change = *new - *old;
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total_change += (*dp++ = change);
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*old++ = *new++;
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}
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/* avoid divide by zero potential */
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if (total_change == 0)
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{
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total_change = 1;
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}
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/* calculate percentages based on overall change, rounding up */
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half_total = total_change / 2;
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for (i = 0; i < cnt; i++)
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{
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*out++ = (int)((*diffs++ * 1000 + half_total) / total_change);
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}
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}
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