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Fix a bug in chan_local glare hangup detection.

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If both sides of a Local channel were hung up at around the same time it was
possible for one thread to destroy the local private structure and have the other thread
immediately try to remove the already freed structure from the local channel list.


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@190286 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Joshua Colp
2009-04-23 19:13:18 +00:00
parent 1dac2a69e2
commit a8a55273cf
1 changed files with 0 additions and 3 deletions
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3
channels/chan_local.c
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@@ -590,13 +590,10 @@ static int local_hangup(struct ast_channel *ast)
let local_queue do it. */
if (glaredetect)
ast_set_flag(p, LOCAL_CANCEL_QUEUE);
ast_mutex_unlock(&p->lock);
/* Remove from list */
AST_LIST_LOCK(&locals);
AST_LIST_REMOVE(&locals, p, list);
AST_LIST_UNLOCK(&locals);
/* Grab / release lock just in case */
ast_mutex_lock(&p->lock);
ast_mutex_unlock(&p->lock);
/* And destroy */
if (!glaredetect) {