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/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <sys/time.h>
#include <linux/ioctl.h>
#include <linux/rtc.h>
#include <linux/android_alarm.h>
#include <fcntl.h>
#include <stdio.h>
static void format_time(int time, char* buffer) {
int seconds, minutes, hours, days;
seconds = time % 60;
time /= 60;
minutes = time % 60;
time /= 60;
hours = time % 24;
days = time / 24;
if (days > 0)
sprintf(buffer, "%d days, %02d:%02d:%02d", days, hours, minutes, seconds);
else
sprintf(buffer, "%02d:%02d:%02d", hours, minutes, seconds);
}
int64_t elapsedRealtime()
{
struct timespec ts;
int fd, result;
fd = open("/dev/alarm", O_RDONLY);
if (fd < 0)
return fd;
result = ioctl(fd, ANDROID_ALARM_GET_TIME(ANDROID_ALARM_ELAPSED_REALTIME), &ts);
close(fd);
if (result == 0)
return ts.tv_sec;
return -1;
}
int uptime_main(int argc, char *argv[])
{
float up_time, idle_time;
char up_string[100], idle_string[100], sleep_string[100];
int elapsed;
FILE* file = fopen("/proc/uptime", "r");
if (!file) {
fprintf(stderr, "Could not open /proc/uptime\n");
return -1;
}
if (fscanf(file, "%f %f", &up_time, &idle_time) != 2) {
fprintf(stderr, "Could not parse /proc/uptime\n");
fclose(file);
return -1;
}
fclose(file);
elapsed = elapsedRealtime();
if (elapsed < 0) {
fprintf(stderr, "elapsedRealtime failed\n");
return -1;
}
format_time(elapsed, up_string);
format_time((int)idle_time, idle_string);
format_time((int)(elapsed - up_time), sleep_string);
printf("up time: %s, idle time: %s, sleep time: %s\n", up_string, idle_string, sleep_string);
return 0;
}
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