scoutos / prex-0.9.0 / usr / sample / cpumon / cpumon.c @ 03e9c04a
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/*
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* Copyright (c) 2005, Kohsuke Ohtani
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* cpumon.c - CPU voltage monitoring program
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*/
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#include <sys/prex.h> |
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#include <sys/ioctl.h> |
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#include <stdio.h> |
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static struct cpufreqinfo cf_info; |
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int
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main(int argc, char *argv[]) |
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{ |
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device_t dev; |
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int last_mhz = 0; |
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int i, j;
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static char bar[21]; |
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/* Boost current prioriy */
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thread_setpri(thread_self(), 50);
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if (device_open("cpufreq", 0, &dev)) |
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panic("open error: cpufreq");
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/* Clear screen */
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printf("\33[2J");
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printf("CPU voltage monitor\n");
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device_ioctl(dev, CFIOC_GET_INFO, &cf_info); |
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if (cf_info.freq == 0 || cf_info.volts == 0) |
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panic("Invalid cpu power/speed");
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/*
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* Setup periodic timer for 10msec period
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*/
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timer_periodic(thread_self(), 100, 10); |
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for (;;) {
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/*
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* Wait next period
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*/
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timer_waitperiod(); |
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device_ioctl(dev, CFIOC_GET_INFO, &cf_info); |
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if (cf_info.freq != last_mhz) {
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printf("\33[s"); /* save cursor */ |
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/*
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* Display speed
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*/
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printf("\nSpeed: %4dMHz 0|", cf_info.freq);
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j = cf_info.freq * 100 / cf_info.maxfreq;
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for (i = 0; i < 20; i++) |
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bar[i] = (i <= j / 5) ? '*' : '-'; |
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bar[i] = '\0';
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printf("%s|100", bar);
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/*
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* Display power
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*/
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printf("\nPower: %4dmV 0|", cf_info.volts);
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j = cf_info.volts * 100 / cf_info.maxvolts;
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for (i = 0; i < 20; i++) |
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bar[i] = (i <= j / 5) ? '*' : '-'; |
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bar[i] = '\0';
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printf("%s|100", bar);
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printf("\33[u"); /* restore cursor */ |
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last_mhz = cf_info.freq; |
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} |
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} |
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return 0; |
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} |