src/ecoli_init.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright 2016, Olivier MATZ <zer0@droids-corp.org>
   3  */
   4
   5 #include <stdlib.h>
   6 #include <stdio.h>
   7 #include <string.h>
   8 #include <assert.h>
   9
  10 #include <ecoli_init.h>
  11
  12 static struct ec_init_list init_list = TAILQ_HEAD_INITIALIZER(init_list);
  13
  14 /* register an init function */
  15 void ec_init_register(struct ec_init *init)
  16 {
  17         struct ec_init *cur;
  18
  19         if (TAILQ_EMPTY(&init_list)) {
  20                 TAILQ_INSERT_HEAD(&init_list, init, next);
  21                 return;
  22         }
  23
  24
  25         TAILQ_FOREACH(cur, &init_list, next) {
  26                 if (init->priority > cur->priority)
  27                         continue;
  28
  29                 TAILQ_INSERT_BEFORE(cur, init, next);
  30                 return;
  31         }
  32
  33         TAILQ_INSERT_TAIL(&init_list, init, next);
  34 }
  35
  36 int ec_init(void)
  37 {
  38         struct ec_init *init;
  39
  40         TAILQ_FOREACH(init, &init_list, next) {
  41                 if (init->init != NULL && init->init() < 0)
  42                         return -1;
  43         }
  44
  45         return 0;
  46 }
  47
  48 void ec_exit(void)
  49 {
  50         struct ec_init *init;
  51
  52         TAILQ_FOREACH_REVERSE(init, &init_list, ec_init_list, next) {
  53                 if (init->exit != NULL)
  54                         init->exit();
  55         }
  56 }