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Modify ast_answer() to not hold the channel lock while calling ast_safe_sleep()

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or when calling ast_waitfor().  These are inappropriate times to hold the channel
lock.  This is what has caused "could not get the channel lock" messages from
chan_sip and has likely caused a negative impact on performance results of SIP
in Asterisk 1.6.  Thanks to file for pointing out this section of code.

(closes issue #13287)
(closes issue #13115)


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@141949 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Russell Bryant
2008-09-09 01:47:56 +00:00
parent 4356d794e3
commit fbe13cfb86
1 changed files with 9 additions and 4 deletions
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13
main/channel.c
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@@ -1674,16 +1674,21 @@ int __ast_answer(struct ast_channel *chan, unsigned int delay)
return -1;
}
ast_channel_unlock(chan);
switch (chan->_state) {
case AST_STATE_RINGING:
case AST_STATE_RING:
if (chan->tech->answer)
ast_channel_lock(chan);
if (chan->tech->answer) {
res = chan->tech->answer(chan);
}
ast_setstate(chan, AST_STATE_UP);
ast_cdr_answer(chan->cdr);
if (delay)
ast_channel_unlock(chan);
if (delay) {
ast_safe_sleep(chan, delay);
else {
} else {
struct ast_frame *f;
int ms = ANSWER_WAIT_MS;
while (1) {
@@ -1719,8 +1724,8 @@ int __ast_answer(struct ast_channel *chan, unsigned int delay)
default:
break;
}
chan->visible_indication = 0;
ast_channel_unlock(chan);
return res;
}