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Why does pthread_cond_wait have spurious wakeups?
...e just checks the predicate again, sees an invalid state, and goes back to sleep. In either case, checking the predicate solves the problem. IMO, in general, users shouldn't use raw POSIX mutexes and conditionals.
– CubicleSoft
May 23 '16 at 9:40
...
Lock-free multi-threading is for real threading experts
...he it will run fast. A cache miss is really expensive, it puts the CPU to sleep for as many as 10 cycles if the data is not in the 1st cache, as many as 200 cycles if it isn't in the 2nd cache and it needs to be read from RAM.
Every CPU core has its own cache, they store their own "view" of RAM. ...
How to measure time in milliseconds using ANSI C?
...fday(&tval_before, NULL);
// Some code you want to time, for example:
sleep(1);
gettimeofday(&tval_after, NULL);
timersub(&tval_after, &tval_before, &tval_result);
printf("Time elapsed: %ld.%06ld\n", (long int)tval_result.tv_sec, (long int)tval_result.tv_usec);
This returns...
How to modify a global variable within a function in bash?
...e while the _passback x is running.
You can see this yourself if you add a sleep 1; before printf or _passback.
_xcapture a d; echo then outputs x or a first, respectively.
The _passback x should not be part of _xcapture,
because this makes it difficult to reuse that recipe.
Also we have some unned...
Adding gif image in an ImageView in android
...(mUpdateResults);
try {
Thread.sleep(t);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
if(ntimes != 0) {
repetitionCounter ++;...
When to use actors instead of messaging solutions such as WebSphere MQ or Tibco Rendezvous?
...r.class)));
producer.tell("Produce", probe.ref());
Thread.sleep(1000);
}
}
class Producer extends UntypedProducerActor{
@Override
public String getEndpointUri() {
return "activemq:foo.bar";
}
}
class Consumer extends UntypedConsumerActor{
@Override
...
Understanding garbage collection in .NET
...hen the freachable queue is empty (which is usually the case), this thread sleeps. But when entries appear, this thread wakes, removes each entry from the queue, and calls each object's Finalize method. The garbage collector compacts the reclaimable memory and the special runtime thread empties the ...
load and execute order of scripts
...cript has been loaded and executed.
To test this fact:
// file: test.php
sleep(10);
die("alert('Done!');");
// HTML file:
<script type="text/javascript" src="test.php"></script>
Dynamically added scripts are executed as soon as they are appended to the document.
To test this fact:
...
Android Fragments. Retaining an AsyncTask during screen rotation or configuration change
...Cancelled())
return null;
SystemClock.sleep(500);
mProgress = i * 10;
publishProgress();
}
return null;
}
@Override
protected void onProgressUpdate(Void... unused)
{
...
Getting started with Haskell
...k in. This comes through use, but also through time. I find that sometimes sleeping on a problem helps more than anything else! Eventually, the idea will click, and you will wonder why you struggled to understand a concept that in reality is incredibly simple. It is awesome when this happens, and wh...