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in reply to How to sleep 1 microsecond?

Did you actually try nanosleep(1000000); ? I didn't see that in your sample.

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Re^2: How to sleep 1 microsecond?
by davido (Cardinal) on Aug 17, 2012 at 08:06 UTC

    One microsecond should be 1000 nanoseconds.


    Dave

[reply]

      Hi, the sample codes above use usleep. Here is the program using nanosleep.

      #!/usr/bin/perl
use strict;
use warnings;

use Time::HiRes qw(usleep nanosleep gettimeofday);

my @start = gettimeofday ();
my $sleep = nanosleep(1000);
my @end = gettimeofday ();
print "[$sleep][@start][@end]\n";

Results:
[1000][1345190945 846575][1345190945 846739]

      [download]

      Compared with the codes that just get the timestamps two times(without the nanosleep line). The nanosleep actually sleeps much longer than 1 microsecond.

      #!/usr/bin/perl
use strict;
use warnings;

use Time::HiRes qw(usleep nanosleep gettimeofday);

my @start = gettimeofday ();
my @end = gettimeofday ();
print "[@start][@end]\n";

Results:
[1345190988 610721][1345190988 610723]

      [download]
[reply]
[d/l]
[select]
      You're totally right, sorry. I just checked Google!
[reply]

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