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Re^3: Pause and Resume Exe

by BrowserUk (Pope)
on Feb 27, 2013 at 12:10 UTC ( #1020861=note: print w/ replies, xml ) Need Help??


in reply to Re^2: Pause and Resume Exe
in thread Pause and Resume Exe

But I have to specify in the beginning only when to suspend and resume the exe.

No you don't.

Script A uses Win32::Process::CreateProcess() to start perl.exe running script B. It gets a process handle back from that call.

Script B is running asynchronously from Script A. And Script A can call $hproc->Suspend() and $hproc->Resume() whenever it chooses to.


With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.


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Re^4: Pause and Resume Exe
by gautamparimoo (Beadle) on Feb 28, 2013 at 05:46 UTC

    @BrowserUK . Plz elaborate how can tell the script A to suspend through script B(I cannot hardcode in script B to suspend for some time as that would be known only at runtime)and then resume again?

      Given count.pl that looks like this:

      C:\test>type count.pl #! perl -slw use strict; use 5.010; say for 1 .. 1e6;

      You can run that script using this script:

      #! perl -slw use strict; use Win32::Process; Win32::Process::Create( my $hProc, '/perl64/bin/perl.exe', 'perl count.pl', 0, 0, '.' ) or die $^E; my $state = 1; while( <STDIN> ) { if( $state ) { $hProc->Suspend(); $state = 0; } else { $hProc->Resume(); $state = 1; } print "\nProcess is ", $state ? 'running' : 'suspended'; }

      And each time you press enter on the command line, count.pl will be suspended or resumed.


      With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
      Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
      "Science is about questioning the status quo. Questioning authority".
      In the absence of evidence, opinion is indistinguishable from prejudice.

        But again it keeps on waiting for some input from user as the process does not finish. It cmd running the process keeps on waiting. Why?

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