skalibs

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waitn_posix.c (433B)

      1 /* ISC license. */
      2 
      3 #include <sys/wait.h>
      4 
      5 #include <skalibs/djbunix.h>
      6 
      7 int waitn_posix (pid_t *pids, unsigned int n, int *w)
      8 {
      9   pid_t wanted = n ? pids[n-1] : 0 ;
     10   while (n)
     11   {
     12     int wstat ;
     13     unsigned int i = 0 ;
     14     pid_t pid = wait_nointr(&wstat) ;
     15     if (pid < 0) return 0 ;
     16     for (; i < n ; i++) if (pid == pids[i]) break ;
     17     if (i < n) pids[i] = pids[--n] ;
     18     if (pid == wanted) *w = wstat ;
     19   }
     20   return 1 ;
     21 }