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Full Discussion: IPC-using fork() in a loop
Top Forums Programming IPC-using fork() in a loop Post 302450045 by saman_glorious on Wednesday 1st of September 2010 11:11:53 AM
Old 09-01-2010
I tried it both on CentOS 5.2 and Ubuntu

plz have a look at my code again

Code:
   for(int count = 0; count < nIntClientCount; count++)
   {
      pid_t pid;

      if((pid = fork()) < 0){
          perror("fork failed\n");
            exit(1);
      }else if(pid == 0)
      {
         if((pid = fork()) < 0)
         {
                          perror("inner fork failed\n");
                                exit(1);
         }
         else if(pid > 0)
                exit(0);
          //second child body

            printf("I am CHILD %d\n", count);
            fflush(stdout);
      }
     if(waitpid(pid, NULL, 0) != pid)
        perror("wait pid didn't match\n");
   }

  printf("parent exited..\n");

  return 0;
}

Last edited by pludi; 09-01-2010 at 12:42 PM..
 

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YAFARAY(1)																YAFARAY(1)

NAME

       yafaray - Yet Another Free RAYtracer

DESCRIPTION

       yafaray [options] file_to_render

DESCRIPTION

       yafaray is an advanced raytracing rendering systems that accepts an XML input file and produces an image output file based on its contents.

OPTIONS

       -s strategy
	   Use strategy to render the scene, where strategy is either threaded (fork multiple threads, which is the default), mono (use a single
	   thread and process), or fork (fork multiple processes). fork is not implemented yet.

       -c N
	   Use N processes or threads (depends on the strategy), for operating on an SMP computer or cluster.

       -r min_x:max_x:min_y:max_y
	   Render only part of the frame, values between -1 and 1. The whole image is -r -1:1:-1:1.

       -z  Optimize for running on a cluster by gzipping some data passed between processes.

       -p path
	   Set an alternative path for the plugins.

       -v  Show the program version.

SEE ALSO

       See the documentation on the website for more information <http://www.yafaray.org/>.

AUTHOR

       This manual page was written by Nick Rusnov <nickrusnov@debian.org> for the Debian system (and may be used by others). Permission is
       granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.1 or any later
       version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts and no Back-Cover Texts.

								    2011-07-20								YAFARAY(1)
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