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