Hello,

I'm writing a program that makes a call to pipe and fork in a loop.  I 
didn't notice the problem at first because the number of iterations in 
the loop I was testing was around 50-100.  The program can run hundreds 
maybe thousands of iterations, but the greater the number of iteration, 
the more likely it will exit due to an error (EMFILE = Too many open 
files) caused by calls to pipe.  The code is as follows...


....
   for ( i = 0; i < num_of_segs; i++ ){  // - - - - - - - - - - - //
  
      if (0 != pipe(proci) || 0 != pipe(proco))
         return 1;  // pipe exits the program, errno is set to 24
      
      /* Create the Child */
      pid = fork();
      if (0 == pid){
         dup2(proci[0], 0);  /* copy reading end to stdin */
         dup2(proco[1], 1);  /* copy reading end to stdout */
         close(proci[0]);
         close(proci[1]);
         close(proco[0]);
         close(proco[1]);
         execl(cmd, "cmd", flags, NULL);
         return 2;
      }

      /* Parent Process */
      if (pid > 0) {

         close(proci[0]);
         close(proco[1]);

         while (0 < (n = read(proco[0], buffer, 38)) ){
            ...
         }

         close(proci[1]);
         close(proco[0]);

      }
      wait(&status);
   } // End for - - - - - - - - - - - - - - - - - - - - - - - - - //
....

I have tried kill(pid,SIGKILL) instead of waiting, but this did not help.

Thanks in advanced,
~Jerome