join.cpp

   1 /*****************************************************************************\
   2 **                                                                           **
   3 ** PBX4Linux                                                                 **
   4 **                                                                           **
   5 **---------------------------------------------------------------------------**
   6 ** Copyright: Andreas Eversberg                                              **
   7 **                                                                           **
   8 ** join functions                                                            **
   9 **                                                                           **
  10 \*****************************************************************************/
  11
  12 #include "main.h"
  13 //#define __u8 unsigned char
  14 //#define __u16 unsigned short
  15 //#define __u32 unsigned int
  16
  17 unsigned int join_serial = 1; /* must be 1, because 0== no join */
  18
  19 //JOIN_STATES
  20
  21 class Join *join_first = NULL;
  22
  23 /*
  24  * find the join with join_id
  25  */
  26 class Join *find_join_id(unsigned int join_id)
  27 {
  28         class Join *join = join_first;
  29
  30         while(join)
  31         {
  32 //printf("comparing: '%s' with '%s'\n", name, join->j_name);
  33                 if (join->j_serial == join_id)
  34                         return(join);
  35                 join = join->next;
  36         }
  37
  38         return(NULL);
  39 }
  40
  41
  42 /*
  43  * constructor for a new join
  44  */
  45 Join::Join(void)
  46 {
  47         class Join **joinp;
  48
  49         j_serial = join_serial++;
  50         j_type = JOIN_TYPE_NONE;
  51
  52         /* attach to chain */
  53         next = NULL;
  54         joinp = &join_first;
  55         while(*joinp)
  56                 joinp = &((*joinp)->next);
  57         *joinp = this;
  58
  59         classuse++;
  60 }
  61
  62
  63 /*
  64  * join descructor
  65  */
  66 Join::~Join()
  67 {
  68         class Join *cl, **clp;
  69
  70         classuse--;
  71
  72         cl = join_first;
  73         clp = &join_first;
  74         while(cl)
  75         {
  76                 if (cl == this)
  77                         break;
  78                 clp = &cl->next;
  79                 cl = cl->next;
  80         }
  81         if (!cl)
  82                 FATAL("software error, join not in chain!\n");
  83         *clp = cl->next; /* detach from chain */
  84 }
  85
  86
  87
  88 /* epoint sends a message to a join
  89  *
  90  */
  91 void Join::message_epoint(unsigned int epoint_id, int message_type, union parameter *param)
  92 {
  93 }
  94
  95
  96 /* join process is called from the main loop
  97  * it processes the current calling state.
  98  * returns 0 if nothing was done
  99  */
 100 int Join::handler(void)
 101 {
 102         return(0);
 103 }
 104
 105 /* free all join structures */
 106 void join_free(void)
 107 {
 108
 109         if (!join_first)
 110         {
 111                 PDEBUG(DEBUG_JOIN, "no more pending join(s), done!\n");
 112                 return;
 113         }
 114         while(join_first)
 115         {
 116                 if (options.deb & DEBUG_JOIN)
 117                 {
 118                         PDEBUG(DEBUG_JOIN, "freeing pending join\n");
 119                 }
 120
 121                 delete join_first;
 122         }
 123 }
 124
 125
 126