== AsteriskSource/MainCdr ==

* struct ast_cdr *ast_cdr_alloc(void)
 * ast_cdr_dup main/cdr.c
  * newcdr = ast_cdr_alloc();
 * ast_channel_alloc main/channel.c
  * tmp->cdr = ast_cdr_alloc();
  * ast_cdr_init(tmp->cdr, tmp);
  * ast_cdr_start(tmp->cdr);
 * __ast_request_and_dial main/channel.c
  * if (!chan->cdr && (chan->cdr = ast_cdr_alloc()))
   * ast_cdr_init(chan->cdr, chan);
  * if (chan->cdr) {
   * char tmp[256];
   * snprintf(tmp, sizeof(tmp), "%s/%s", type, (char *)data);
   * ast_cdr_setapp(chan->cdr,"Dial",tmp);
   * ast_cdr_update(chan);
   * ast_cdr_start(chan->cdr);
   * ast_cdr_end(chan->cdr);
   * if (ast_cdr_disposition(chan->cdr,chan->hangupcause))
    * ast_cdr_failed(chan->cdr);
  * }
 * clear_caller apps/app_followme.c
  * if (!outbound->cdr) {
   * outbound->cdr = ast_cdr_alloc();
   * if (outbound->cdr)
    * ast_cdr_init(outbound->cdr, outbound);
  * }
  * if (outbound->cdr) {
   * char tmp[256]
   * snprintf(tmp, sizeof(tmp), "%s/%s", "Local", tmpuser->dialarg);
   * ast_cdr_setapp(outbound->cdr, "FollowMe", tmp);
   * ast_cdr_update(outbound);
   * ast_cdr_start(outbound->cdr);
   * ast_cdr_end(outbound->cdr);
   * if (ast_cdr_disposition(outbound->cdr, outbound->hangupcause))
    * ast_cdr_failed(outbound->cdr);
  * } else
 * findmeexec apps/app_followme.c
  * if (!outbound->cdr)
   * outbound->cdr = ast_cdr_alloc();
  * if (outbound->cdr) {
   * char tmp[256];
   * ast_cdr_init(outbound->cdr, outbound);
   * snprintf(tmp, sizeof(tmp), "%s/%s", "Local", dialarg);
   * ast_cdr_setapp(outbound->cdr, "FollowMe", tmp);
   * ast_cdr_update(outbound);
   * ast_cdr_start(outbound->cdr);
   * ast_cdr_end(outbound->cdr);
   * if (ast_cdr_disposition(outbound->cdr,outbound->hangupcause))
    * ast_cdr_failed(outbound->cdr);
  * } else {
 *  __agent_start_monitoring channels/chan_agent.c
  * if (!ast->cdr)
   * ast->cdr = ast_cdr_alloc();
  * ast_cdr_setuserfield(ast, tmp2);

* cdr structure ¿¡ next °¡ ÀÖ´Â ÀÌÀ¯¸¦ ¸ð¸£°ÚÀ½.
== function ==
* struct ast_cdr *ast_cdr_alloc(void)
 * struct ast_cdr *x = ast_calloc(1, sizeof(struct ast_cdr));

* int ast_cdr_init(struct ast_cdr *cdr, struct ast_channel *c)
 * for ( ; cdr ; cdr = cdr->next) {
  * cdr->channel, set_one_cid(cdr, c);, cdr->disposition
  * cdr->amaflags, cdr->accountcode, cdr->dst
  * cdr->dcontext, cdr->uniqueid
 * }

* void ast_cdr_start(struct ast_cdr *cdr)
 * for (; cdr; cdr = cdr->next) {
  * check_post(cdr);
  * cdr->start = ast_tvnow();
 * }

* include/asterisk/time.h
{{{
AST_INLINE_API(
struct timeval ast_tvnow(void),
{
        struct timeval t;
        gettimeofday(&t, NULL);
        return t;
}
)
}}}