Beefy Boxes and Bandwidth Generously Provided by pair Networks
Don't ask to ask, just ask

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
Hi, Here in the for loop, the values passed is between 1 to 200000.
In the log file only 600 values are printed. How can I print all the values in the log file by creating 5 threads.
#! perl -slw use strict; use threads; use threads::shared; our $N ||= 100; our $from=1; our $to=200000; sub worker { my $tid = threads->tid; my( $log, $semRef, $from, $to ) = @_; for my $file ( $from .. $to ) { ## Simulate doing some processing ## Lock the log file semaphore before writing lock $$semRef; ## And write to the log printf $log "[%2d] Processesing file%3d\n", $tid, $file; ## The lock is released automatically at the end of the block } } ## A shared variable used as a semaphore for the log file resource my $logSem :shared; ## Open the log file in the main thread open my $log, '>', 'myLog2' or die $!; my @threads = map{ ## create the workers passing the log file handle and semaphore threads->create( \&worker, $log, \$logSem,$_*$N, $_*$N + $N -1); } 0 .. 5; ## 5 threads each processing 100 "files" ## Wait till they are done $_->join for @threads; ## close the log close $log;

In reply to Threads and print by sandy1028

Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":

  • Are you posting in the right place? Check out Where do I post X? to know for sure.
  • Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
    <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
  • Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
  • Want more info? How to link or How to display code and escape characters are good places to start.
Log In?

What's my password?
Create A New User
Domain Nodelet?
and the web crawler heard nothing...

How do I use this?Last hourOther CB clients
Other Users?
Others pondering the Monastery: (4)
As of 2023-12-11 18:36 GMT
Find Nodes?
    Voting Booth?
    What's your preferred 'use VERSION' for new CPAN modules in 2023?

    Results (41 votes). Check out past polls.