| Member | | Join Date: Jan 2008
Posts: 36
| |
Hello my code is here.
here i am unable to execute my perl programs .
please help in this regards, -
#!/usr/bin/perl
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use warnings;
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use strict;
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use Carp;
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use Time::HiRes;
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use POSIX 'setsid';
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my $child_pid;
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my $child_proc;
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my $cmd = "c:\\perl\\bin\\perl.exe";
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my $debug = 1;
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start_child();
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sleep(5.0);
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stop_child();
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sub start_child
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{
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# die "cannot execute cmd: $cmd" unless -x $cmd;
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if ($^O eq 'MSWin32') # Windows
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{
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require Win32::Process;
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Win32::Process::Create($child_proc, $cmd, "e:\\automation\\sleep1.pl", 0, 0, ".") || confess "Could not spawn child: $!";
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$child_pid=$child_proc->GetProcessID();
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print $child_proc->GetProcessID();
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start_child();
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Win32::Process::Create($child_proc, $cmd, "e:\\automation\\sleep1.pl", 0, 0, ".") || confess "Could not spawn child: $!";
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$child_pid=$child_proc->GetProcessID();
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start_child();
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Win32::Process::Create($child_proc, $cmd, "e:\\automation\\sleep1.pl", 0, 0, ".") || confess "Could not spawn child: $!";
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$child_pid =$child_proc->GetProcessID();
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start_child();
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Win32::Process::Create($child_proc, $cmd, "e:\\automation\\sleep1.pl", 0, 0, ".") || confess "Could not spawn child: $!";
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$child_pid=$child_proc->GetProcessID();
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start_child();
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}
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else # Unix
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{
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$SIG{CHLD} = 'IGNORE';
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$child_pid = fork();
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unless (defined $child_pid)
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{
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confess "Could not spawn child (Unix): $!";
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}
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if ($child_pid == 0 ) # child
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{
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unless ($debug)
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{
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open STDIN, "<", "/dev/null" or die "Can't read /dev/null: $!";
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open STDOUT, ">", "/dev/null" or die "Can't write /dev/null: $!";
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}
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setsid or warn "setsid cannot start a new session: $!";
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unless ($debug)
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{
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open STDERR, '>&STDOUT' or die "Can't dup stdout: $!";
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}
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local $| = 1;
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unless (exec($cmd))
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{
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confess "Could not start child: $cmd: $!";
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CORE::exit(0);
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}
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}
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# parent
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$SIG{CHLD} = 'DEFAULT';
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}
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# catch early child exit, e.g. if program path is incorrect
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sleep(1.0);
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POSIX::waitpid(-1, POSIX::WNOHANG()); # clean up any defunct child process
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if (kill(0,$child_pid))
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{
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print "Started child process id $child_pid\n";
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}
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else
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{
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warn "Child process exited quickly: $cmd: process $child_pid";
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}
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}
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sub stop_child
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{
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if ($^O eq 'MSWin32') # Windows
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{
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Win32::Process::KillProcess($child_pid,0);
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}
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else # Unix
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{
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kill 9, $child_pid || warn "could not kill process $child_pid: $!";
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}
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print "Stopped child process id $child_pid\n";
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}
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