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annotate sip-out/call_clear.c @ 166:8adcd220c6cf

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top Makefile: add sip-out
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 12 Oct 2022 17:07:49 -0800
parents e54b0a9e322f
children
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1 /*
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2 * In this module we implement final clearing of calls, i.e., freeing
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3 * of struct call, and all preliminary steps that need to happen
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4 * toward this ultimate end state.
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5 */
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6
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7 #include <sys/types.h>
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8 #include <sys/socket.h>
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9 #include <sys/time.h>
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10 #include <netinet/in.h>
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11 #include <stdio.h>
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12 #include <stdint.h>
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13 #include <stdlib.h>
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14 #include <string.h>
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15 #include <strings.h>
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16 #include <syslog.h>
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17 #include "../include/out_routes.h"
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18 #include "call.h"
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19
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20 extern struct call *call_list;
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21 extern struct timeval cur_event_time;
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22
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23 void
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24 sip_mark_end_time(call, linger)
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25 struct call *call;
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26 unsigned linger;
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27 {
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28 call->sip_clear_time = cur_event_time.tv_sec + linger;
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29 }
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30
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31 void
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32 check_dead_call(call)
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33 struct call *call;
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34 {
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35 if (call->overall_state != OVERALL_STATE_TEARDOWN)
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36 return;
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37 if (call->mncc)
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38 return;
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39 if (call->mgw_state != MGW_STATE_NO_EXIST)
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40 return;
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41 if (call->mgw_xact)
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42 return;
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43 if (call->sip_call_exists)
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44 call->overall_state = OVERALL_STATE_SIP_FINISH;
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45 else
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46 call->overall_state = OVERALL_STATE_GC;
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47 }
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48
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49 void
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50 clear_dead_calls()
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51 {
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52 struct call *call, **pp;
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53
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54 for (pp = &call_list; *pp; ) {
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55 call = *pp;
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56 if (call->overall_state == OVERALL_STATE_GC ||
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57 call->overall_state == OVERALL_STATE_SIP_FINISH &&
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58 call->sip_state >= SIP_STATE_ACCEPT_100 &&
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59 cur_event_time.tv_sec >= call->sip_clear_time) {
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60 *pp = call->next;
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61 free(call);
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62 continue;
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63 }
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64 pp = &call->next;
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65 }
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66 }