Contrary to what you said, (3) will work with CreateProcess. Remember that it's a shell command, so launch cmd.exe to execute the command. system uses CreateProcess, so anything system can do, so can CreateProcess. | [reply] [d/l] [select] |
zentara, your solution seems to look well, but really it doen't match all requests under windows..
I've found solution, please look below if interesting)
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A separate timer thread will work if you set it up right, I don't understand why it wouldn't. You start 2 threads, which run independent. When the timer reaches the end of it's code block, if a finished flag isn't set, it kills the pid from the other thread. But I don't use windows, and maybe I don't experience it's peculiarities. This works on linux. (Granted it is easier if you have an eventloop system in main).
#!/usr/bin/perl -w
use strict;
use threads;
use threads::shared;
#my $finished:shared = 0;
my $timer_go:shared = 0;
#my $worker_go:shared = 0;
#my $worker_pid:shared = '';
my $worker = threads->create(\&worker);
my $timer = threads->create(\&timer,$worker);
print "hit enter to start\n";
<>;
$timer_go=1;
<>;
$timer->join();
$worker->join();
sub timer {
my $worker = shift;
while(1){
if($timer_go){
my $count = 0;
while(1){
$count++;
if($count > 5){
print "timed out\nHit enter to finish\n";
# Send a signal to a thread
$worker->kill('INT');
return;
}
sleep 1;
print "timing $count\n";
}
}else{sleep 1}
}
}
sub worker {
$|++;
$SIG{INT} = sub{ warn "Caught Zap!\n"; sleep 1; exit; };
my $worker_pid = open( READ, "top -d 1 -b |" );
print "\t$worker_pid\n";
return;
}
| [reply] [d/l] |