123 lines
3.7 KiB
C
123 lines
3.7 KiB
C
/*
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* Copyright (c) 2010, The Android Open Source Project
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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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* * 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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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google, Inc. nor the names of its contributors
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* may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* 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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#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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#include <time.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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static int elapsedRealtimeAlarm(struct timespec *ts)
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{
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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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return result;
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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 result = elapsedRealtimeAlarm(&ts);
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if (result < 0)
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result = clock_gettime(CLOCK_BOOTTIME, &ts);
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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 __attribute__((unused)),
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char *argv[] __attribute__((unused)))
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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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struct timespec up_timespec;
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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", &idle_time) != 1) {
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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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if (clock_gettime(CLOCK_MONOTONIC, &up_timespec) < 0) {
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fprintf(stderr, "Could not get monotonic time\n");
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return -1;
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}
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up_time = up_timespec.tv_sec + up_timespec.tv_nsec / 1e9;
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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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