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     timeq_events = entry;
  18 }
  19
  20 struct timeq_entry* timeq_add(int seconds, timeq_callback_t *callback, void *data) {
  21     time_t now = time(0);
  22     struct timeq_entry *entry = malloc(sizeof(*entry));
  23     if (!entry)
  24     {
  25         perror("malloc() failed");
  26         return NULL;
  27     }
  28     entry->execute = now + seconds;
  29     entry->callback = callback;
  30     entry->data = data;
  31     entry->name = NULL;
  32     struct timeq_entry *next, *prev = NULL;
  33     for(next = timeq_events; next; next = next->next) {
  34         if(next->execute >= entry->execute)
  35             break;
  36         else
  37             prev = next;
  38     }
  39     if(prev == NULL) {
  40         entry->next = timeq_events;
  41         timeq_events = entry;
  42     } else {
  43         entry->next = next;
  44         prev->next = entry;
  45     }
  46     return entry;
  47 }
  48
  49 struct timeq_entry* timeq_add_name(char *name, int seconds, timeq_callback_t *callback, void *data) {
  50     struct timeq_entry *entry = timeq_add(seconds, callback, data);
  51     entry->name = strdup(name);
  52     return entry;
  53 }
  54
  55 int timeq_del(struct timeq_entry* entry) {
  56     struct timeq_entry *centry, *last = NULL;
  57     for(centry = timeq_events; centry; centry = centry->next) {
  58         if(centry == entry) {
  59             if(last)
  60                 last->next = centry->next;
  61             else
  62                 timeq_events = centry->next;
  63             if(centry->name)
  64                 free(centry->name);
  65             free(centry);
  66             return 1;
  67         } else {
  68             last = centry;
  69         }
  70     }
  71     return 0;
  72 }
  73
  74 int timeq_del_name(char *name) {
  75     struct timeq_entry *centry, *last = NULL;
  76     for(centry = timeq_events; centry; centry = centry->next) {
  77         if(centry->name && !stricmp(centry->name, name)) {
  78             if(last)
  79                 last->next = centry->next;
  80             else
  81                 timeq_events = centry->next;
  82             free(centry->name);
  83             free(centry);
  84             return 1;
  85         } else {
  86             last = centry;
  87         }
  88     }
  89     return 0;
  90 }
  91
  92 int timeq_name_exists(char *name) {
  93     struct timeq_entry *centry;
  94     for(centry = timeq_events; centry; centry = centry->next) {
  95         if(centry->name && !stricmp(centry->name, name)) {
  96             return 1;
  97         }
  98     }
  99     return 0;
 100 }