system-clock

I've noticed that if I set the setTimeout for 1 minute in the future, and then change my system time to 5 minutes in the past, the setTimeout function will trigger in 6 minutes. I did this is because I wanted to see what happens during a daylight savings change to the system clock. My JavaScript webpage uses a setTimeout function to automatically refresh the page every 5 seconds, and if daylight savings were to occur, then the page information would freeze for an hour. Is there a workaround? Edit: I am updating the page using Ajax, I dont want to refresh the entire page. Siedrix What I will do

I’m using AWS and am on an EC2 server … [dalvarado@mymachine ~]$ uname -a Linux mydomain.org 3.14.33-26.47.amzn1.x86_64 #1 SMP Wed Feb 11 22:39:25 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux My clock is off by a minute ro so despite the fact that I already have NTPD installed and running [dalvarado@mymachine ~]$ sudo service ntpd status ntpd (pid 22963) is running... It would appear ntp packets are blocked or there is some other problem because I get this error … [dalvarado@mymachine ~]$ sudo ntpdate pool.ntp.org 2 Apr 16:43:50 ntpdate[23748]: no server suitable for synchronization found Does

I need set the date/time from Android programmatically, but I'm not having success! I have these three sources above: Source code 1 AlarmManager alarm = (AlarmManager) getSystemService(ALARM_SERVICE); alarm.setTime(1330082817000); AndroidManifest: <uses-permission android:name="android.permission.SET_TIME" /> <uses-permission android:name="android.permission.SET_TIME_ZONE" /> Exception: Service fatal error : Unable to start activity ComponentInfo{br.com.tdta.service/br.com.tdta.service.Service}: java.lang.SecurityException: setTime: Neither user 10038 nor current process has android.permission

I'm writing a script containing several "adb shell" command. I also want to record the time when program execute these command in a form of realtime and uptime. I know I can get uptime and realtime through SystemClock: SystemClock.uptimeMillis(); SystemClock.elapsedRealtime(); Is there any way I can get these information from the command line? Thanks a lot! Try: adb shell cat /proc/uptime If you only need to-the-second accuracy, adb shell uptime will also work. Example output: up time: 00:09:26, idle time: 00:07:15, sleep time: 00:00:00 来源： https://stackoverflow.com/questions/18135966/how-to

I've noticed that System.currentTimeMillis() time is device dependent. If I change the time on the device's clock, this method will return a different answer. For example: If the real time now is 10:00, and I change the clock on my device to 9:30, then System.currentTimeMillis() will return the 9:30 time (in milliseconds..). I've also tried this answer and some other answers, but didn't find anything useful. I should state that my app works mostly offline. Is there a way to get the real current time (device independent) without external API? If it were not for the 'offline' part, I'd have

We want to run a task every 1000 seconds (say). So we have timer.scheduleAtFixedRate(task, delay, interval); Mostly, this works fine. However, this is an embedded system and the user can change the real time clock. If they set it to a time in the past after we set up the timer, it seems the timer doesn't execute until the original real-time date/time. So if they set it back 3 days, the timer doesn't execute for 3 days :( Is this permissible behaviour, or a defect in the Java library? The Oracle javadocs don't seem to mention anything about the dependency or not on the underlying value of the

I have just written this short C++ program to approximate the actual number of clock ticks per second. #include <iostream> #include <time.h> using namespace std; int main () { for(int i = 0; i < 10 ; i++) { int first_clock = clock(); int first_time = time(NULL); while(time(NULL) <= first_time) {} int second_time = time(NULL); int second_clock = clock(); cout << "Actual clocks per second = " << (second_clock - first_clock)/(second_time - first_time) << "\n"; cout << "CLOCKS_PER_SEC = " << CLOCKS_PER_SEC << "\n"; } return 0; } When I run the program, I get output that looks like this. Actual