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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.



git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/12@403311 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Mark Michelson
2013-12-03 16:33:49 +00:00
parent d904906a1a
commit 4b7ba33125
57 changed files with 384 additions and 31 deletions
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10
main/pickup.c
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@@ -354,11 +354,17 @@ int ast_do_pickup(struct ast_channel *chan, struct ast_channel *target)
/* setting the HANGUPCAUSE so the ringing channel knows this call was not a missed call */
ast_channel_hangupcause_set(chan, AST_CAUSE_ANSWERED_ELSEWHERE);
if (!(chan_snapshot = ast_channel_snapshot_create(chan))) {
ast_channel_lock(chan);
chan_snapshot = ast_channel_snapshot_create(chan);
ast_channel_unlock(chan);
if (!chan_snapshot) {
goto pickup_failed;
}
if (!(target_snapshot = ast_channel_snapshot_create(target))) {
ast_channel_lock(target);
target_snapshot = ast_channel_snapshot_create(target);
ast_channel_unlock(target);
if (!target_snapshot) {
goto pickup_failed;
}