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Full Discussion: simple fork question
Top Forums Programming simple fork question Post 15724 by saurabh1 on Tuesday 19th of February 2002 12:15:39 AM
Old 02-19-2002
try running this code...

#include <unistd.h>
void main()
{
int f;
printf("\n Parent procces ID=%d\n",getpid());
f=fork();
if(f==0)
{
printf("\n Child process ID=%d father=%d\n",getpid(),getppid());
}
else
{
wait(0);
}
exit(0);
}


Here's the output:

./a.out

Parent procces ID=27711

Child process ID=27712 father=27711

The problem in the previous code is that the parent does not wait for the termination of the child process....Hence sometimes the parent process dies before the child ..Hence the init process(pid=1) becomes the parent of the child process...

By adding wait() or waitpid() we ensure that the parent waits for the termination of the child...


Pls. correct me if I am wrong....!!!
 

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Child::Link::IPC::Pipe::Parent(3pm)			User Contributed Perl Documentation		       Child::Link::IPC::Pipe::Parent(3pm)

NAME
Child::Link::IPC::Pipe::Parent - Parent object used by the pipe plugin. SEE ALSO
This class inherits from: Child::Link::Parent Child::Link::IPC Child::Link::IPC::Pipe HISTORY
Most of this was part of Parrallel::Runner intended for use in the Fennec project. Fennec is being broken into multiple parts, this is one such part. FENNEC PROJECT
This module is part of the Fennec project. See Fennec for more details. Fennec is a project to develop an extendable and powerful testing framework. Together the tools that make up the Fennec framework provide a potent testing environment. The tools provided by Fennec are also useful on their own. Sometimes a tool created for Fennec is useful outside the greator framework. Such tools are turned into their own projects. This is one such project. Fennec - The core framework The primary Fennec project that ties them all together. AUTHORS
Chad Granum exodist7@gmail.com COPYRIGHT
Copyright (C) 2010 Chad Granum Child is free software; Standard perl licence. Child is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the license for more details. perl v5.10.1 2011-03-07 Child::Link::IPC::Pipe::Parent(3pm)
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