text: /* Copyright (c) 2015, Michael Santos <michael.santos@gmail.com>
   *
   * Permission to use, copy, modify, and/or distribute this software for any
   * purpose with or without fee is hereby granted, provided that the above
   * copyright notice and this permission notice appear in all copies.
   *
   * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   */
  #include "alcove.h"
  
  int pid_foreach(alcove_state_t *ap, pid_t pid, void *arg1, void *arg2,
                  int (*comp)(pid_t, pid_t),
                  int (*fp)(alcove_state_t *ap, alcove_child_t *, void *,
                            void *)) {
    int i = 0;
    int rv = 0;
  
    for (i = 0; i < ap->fdsetsize; i++) {
      if ((*comp)(ap->child[i].pid, pid) == 0)
        continue;
  
      rv = (*fp)(ap, &(ap->child[i]), arg1, arg2);
  
      if (rv <= 0)
        return rv;
    }
  
    return 1;
  }
  
  int pid_equal(pid_t p1, pid_t p2) { return p1 == p2; }
  
  int pid_not_equal(pid_t p1, pid_t p2) { return p1 != p2; }
  