clock

This question already has an answer here: How do I time a method's execution in Java? 37 answers What's a simple/easy way to access the system clock using Java, so that I can calculate the elapsed time of an event? Leigh I would avoid using System.currentTimeMillis() for measuring elapsed time. currentTimeMillis() returns the 'wall-clock' time, which may change (eg: daylight savings, admin user changing the clock) and skew your interval measurements. System.nanoTime() , on the other hand, returns the number of nanoseconds since 'some reference point' (eg, JVM start up), and would therefore not

I want to log how long something takes in real walltime. Currently I'm doing this: startTime = time.time() someSQLOrSomething() print "That took %.3f seconds" % (time.time() - startTime) But that will fail (produce incorrect results) if the time is adjusted while the SQL query (or whatever it is) is running. I don't want to just benchmark it. I want to log it in a live application in order to see trends on a live system. I want something like clock_gettime(CLOCK_MONOTONIC,...), but in Python. And preferably without having to write a C module that calls clock_gettime(). Armin Ronacher That

How do I call clock() in C++ ? For example, I want to test how much time a linear search takes to find a given element in an array. #include <iostream> #include <cstdio> #include <ctime> int main() { std::clock_t start; double duration; start = std::clock(); /* Your algorithm here */ duration = ( std::clock() - start ) / (double) CLOCKS_PER_SEC; std::cout<<"printf: "<< duration <<'\n'; } An alternative solution, which is portable and with higher precision, available since C++11, is to use std::chrono . Here is an example: #include <iostream> #include <chrono> typedef std::chrono::high

Folks, in my application I'm using clock_gettime(CLOCK_MONOTONIC) in order to measure the delta time between frames (a typical approach in gamedev) and from time to time I'm facing a strange behavior of clock_gettime(..) - returned values occasionally are not monotonic (i.e prev. time is bigger than current time). Currently, if such a paradox happens I simply skip the current frame and start processing the next one. The question is how can this be possible at all? Is it a bug in Linux POSIX implementation of clock_gettime ? I'm using Ubuntu Server Edition 10.04 (kernel 2.6.32-24, x86_64), gcc

I am facing a problem with a clock widget i made. I want the user to touch the clock and launch the clock app on the phone. this is the code: //this worked on my nexus 2.1 if(VERSION.SDK.equals("7")){ RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.widget); Intent AlarmClockIntent = new Intent(Intent.ACTION_MAIN).addCategory(Intent.CATEGORY_LAUNCHER).setComponent(new ComponentName("com.android.deskclock", "com.android.deskclock.DeskClock")); PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, AlarmClockIntent, 0); views.setOnClickPendingIntent(R.id.Widget

I have a simple quiz application and I want display a nice timer / clock at the top of the page which shows the user how long they've been going for. (If I could somehow show them a timer for Total Quiz Time and also a second one for This Question Time that would be even cooler but I should be able to figure out how to do myself that once I've got one timer working. My question is: What's a nice, easy way to show a simple timer / clock using JQuery? (straight JS is also ok) I know how to check time, but how do I get incrementing seconds? My own searches keep leading me to JQuery plugins (I