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Properly avoid a collision with iax2_hangup (issue #8115 reported by vazir)
git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@44759 65c4cc65-6c06-0410-ace0-fbb531ad65f3
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@@ -1688,13 +1688,10 @@ static void iax2_destroy_helper(struct chan_iax2_pvt *pvt)
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static int iax2_predestroy(int callno)
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{
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struct ast_channel *c;
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struct chan_iax2_pvt *pvt;
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ast_mutex_lock(&iaxsl[callno]);
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pvt = iaxs[callno];
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if (!pvt) {
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ast_mutex_unlock(&iaxsl[callno]);
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struct chan_iax2_pvt *pvt = iaxs[callno];
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if (!pvt)
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return -1;
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}
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if (!ast_test_flag(pvt, IAX_ALREADYGONE)) {
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iax2_destroy_helper(pvt);
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ast_set_flag(pvt, IAX_ALREADYGONE);
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@@ -1708,19 +1705,16 @@ static int iax2_predestroy(int callno)
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ast_atomic_fetchadd_int(&usecnt, -1);
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ast_update_use_count();
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}
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ast_mutex_unlock(&iaxsl[callno]);
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return 0;
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}
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static void iax2_destroy(int callno)
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{
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struct chan_iax2_pvt *pvt;
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struct chan_iax2_pvt *pvt = iaxs[callno];
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struct iax_frame *cur;
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struct ast_channel *owner;
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retry:
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ast_mutex_lock(&iaxsl[callno]);
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pvt = iaxs[callno];
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gettimeofday(&lastused[callno], NULL);
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owner = pvt ? pvt->owner : NULL;
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@@ -1730,6 +1724,7 @@ retry:
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ast_log(LOG_NOTICE, "Avoiding IAX destroy deadlock\n");
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ast_mutex_unlock(&iaxsl[callno]);
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usleep(1);
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ast_mutex_lock(&iaxsl[callno]);
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goto retry;
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}
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}
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@@ -1774,7 +1769,6 @@ retry:
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if (owner) {
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ast_mutex_unlock(&owner->lock);
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}
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ast_mutex_unlock(&iaxsl[callno]);
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if (callno & 0x4000)
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update_max_trunk();
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}
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