File: [local] / prex-old / usr / sample / cpumon / cpumon.c (download)
Revision 1.1.1.1 (vendor branch), Tue Jun 3 09:38:50 2008 UTC (16 years, 3 months ago) by nbrk
Branch: MAIN, KOHSUKE
CVS Tags: PREX_0_7_BASE, HEAD Branch point for: PREX_0_8_BASE
Changes since 1.1: +0 -0 lines
Yeah, this is an initial import of Prex, portable real-time microkernel
operating system. I wanna hack it for non-profit but fun, so let it in.
|
/*
* Copyright (c) 2005, Kohsuke Ohtani
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* cpumon.c - CPU voltage monitoring program
*/
#include <prex/prex.h>
#include <sys/ioctl.h>
#include <stdio.h>
static struct cpu_info cpu_info;
static struct cpu_stat cpu_stat;
int
main(int argc, char *argv[])
{
device_t cpu_dev;
int last_mhz = 0;
int i, j;
static char bar[21];
/* Boost current prioriy */
thread_setprio(thread_self(), 50);
if (device_open("cpu", 0, &cpu_dev))
panic("open error: cpu");
/* Clear screen */
printf("\33[2J");
printf("CPU voltage monitor\n");
device_ioctl(cpu_dev, CPUIOC_GET_INFO, (u_long)&cpu_info);
if (cpu_info.clock_ctrl == 0)
panic("DVS not supported by cpu");
if (cpu_info.speed == 0 || cpu_info.power == 0)
panic("Invalid cpu power/speed");
/*
* Setup periodic timer for 10msec period
*/
timer_periodic(thread_self(), 100, 10);
for (;;) {
/*
* Wait next period
*/
timer_waitperiod();
device_ioctl(cpu_dev, CPUIOC_GET_STAT, (u_long)&cpu_stat);
if (cpu_stat.speed != last_mhz) {
printf("\33[s"); /* save cursor */
/*
* Display speed
*/
printf("\nSpeed: %4dMHz 0|", cpu_stat.speed);
j = cpu_stat.speed * 100 / cpu_info.speed;
for (i = 0; i < 20; i++)
bar[i] = (i <= j / 5) ? '*' : '-';
bar[i] = '\0';
printf(bar);
printf("|100");
/*
* Display power
*/
printf("\nPower: %4dmV 0|", cpu_stat.power);
j = cpu_stat.power * 100 / cpu_info.power;
for (i = 0; i < 20; i++)
bar[i] = (i <= j / 5) ? '*' : '-';
bar[i] = '\0';
printf(bar);
printf("|100");
printf("\33[u"); /* restore cursor */
last_mhz = cpu_stat.speed;
}
}
return 0;
}