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res_parking: Fix crash due to race condition when unloading.

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There is currently a race condition when unloading the res_parking
module. Depending on the will of the universe the subscription
invocation may occur AFTER the module is unloaded. This is because
the module does NOT use stasis_unsubscribe_and_join when terminating
the subscription. It merely uses stasis_unsubscribe.

This change makes it use stasis_unsubscribe_and_join which is documented
for usage in this exact scenario.

AST-1520 #close

Review: https://reviewboard.asterisk.org/r/4375/
........

Merged revisions 431114 from http://svn.asterisk.org/svn/asterisk/branches/13


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@431115 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Joshua Colp
2015-01-27 11:47:57 +00:00
parent 965777ccfc
commit 2504f97b01
1 changed files with 1 additions and 1 deletions
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2
res/parking/parking_manager.c
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@@ -689,7 +689,7 @@ int load_parking_manager(void)
static void parking_manager_disable_stasis(void)
{
parking_sub = stasis_unsubscribe(parking_sub);
parking_sub = stasis_unsubscribe_and_join(parking_sub);
}
void unload_parking_manager(void)