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Add channel locking for channel snapshot creation.

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This adds channel locks around calls to create channel snapshots as well
as other functions which operate on a channel and then end up
creating a channel snapshot. Functions that expect the channel to be
locked prior to being called have had their documentation updated to
indicate such.
........

Merged revisions 403311 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@403314 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Mark Michelson
2013-12-03 17:07:29 +00:00
parent 8b24b0d206
commit 8e8b329e14
57 changed files with 384 additions and 31 deletions
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9
main/bridge.c
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@@ -2497,7 +2497,13 @@ static int try_swap_optimize_out(struct ast_bridge *chan_bridge,
other = ast_bridge_channel_peer(src_bridge_channel);
if (other && other->state == BRIDGE_CHANNEL_STATE_WAIT) {
unsigned int id = ast_atomic_fetchadd_int((int *) &optimization_id, +1);
unsigned int id;
if (ast_channel_trylock(other->chan)) {
return 1;
}
id = ast_atomic_fetchadd_int((int *) &optimization_id, +1);
ast_verb(3, "Move-swap optimizing %s <-- %s.\n",
ast_channel_name(dst_bridge_channel->chan),
@@ -2519,6 +2525,7 @@ static int try_swap_optimize_out(struct ast_bridge *chan_bridge,
if (pvt && pvt->callbacks && pvt->callbacks->optimization_finished) {
pvt->callbacks->optimization_finished(pvt, res == 1, id);
}
ast_channel_unlock(other);
}
return res;
}