timeq.c

   1
   2 #include "timeq.h"
   3
   4 static struct timeq_entry *timeq_events;
   5
   6 void timeq_tick() {
   7     struct timeq_entry *entry, *next;
   8     time_t now = time(0);
   9     for(entry = timeq_events; entry; entry = next) {
  10         if(entry->execute <= now) {
  11             entry->callback(entry->data);
  12             next = entry->next;
  13             free(entry);
  14         } else
  15             break;
  16     }
  17 }
  18
  19 struct timeq_entry* timeq_add(int seconds, timeq_callback_t *callback, void *data) {
  20     time_t now = time(0);
  21     struct timeq_entry *entry = malloc(sizeof(*entry));
  22     if (!entry)
  23     {
  24         perror("malloc() failed");
  25         return NULL;
  26     }
  27     entry->execute = now + seconds;
  28     entry->callback = callback;
  29     entry->data = data;
  30     entry->name = NULL;
  31     struct timeq_entry *next, *prev = NULL;
  32     for(next = timeq_events; next; next = next->next) {
  33         if(next->execute >= entry->execute)
  34             break;
  35         else
  36             prev = next;
  37     }
  38     if(prev == NULL) {
  39         entry->next = timeq_events;
  40         timeq_events = entry;
  41     } else {
  42         entry->next = next;
  43         prev->next = entry;
  44     }
  45     return entry;
  46 }
  47
  48 struct timeq_entry* timeq_add_name(char *name, int seconds, timeq_callback_t *callback, void *data) {
  49     struct timeq_entry *entry = timeq_add(seconds, callback, data);
  50     entry->name = strdup(name);
  51     return entry;
  52 }
  53
  54 int timeq_del(struct timeq_entry* entry) {
  55     struct timeq_entry *centry, *last = NULL;
  56     for(centry = timeq_events; centry; centry = centry->next) {
  57         if(centry == entry) {
  58             if(last)
  59                 last->next = centry->next;
  60             else
  61                 timeq_events = centry->next;
  62             if(centry->name)
  63                 free(centry->name);
  64             free(centry);
  65             return 1;
  66         } else {
  67             last = centry;
  68         }
  69     }
  70     return 0;
  71 }
  72
  73 int timeq_del_name(char *name) {
  74     struct timeq_entry *centry, *last = NULL;
  75     for(centry = timeq_events; centry; centry = centry->next) {
  76         if(centry->name && !stricmp(centry->name, name)) {
  77             if(last)
  78                 last->next = centry->next;
  79             else
  80                 timeq_events = centry->next;
  81             free(centry->name);
  82             free(centry);
  83             return 1;
  84         } else {
  85             last = centry;
  86         }
  87     }
  88     return 0;
  89 }