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Don't hold nsProxyObjectManager's lock while calling delete on an nsProxyEventObject. (Bug 650674) r=bsmedberg

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This commit is contained in:
L. David Baron 2011-04-19 21:22:39 -07:00
parent c0000045de
commit f0982d780b
1 changed files with 11 additions and 3 deletions
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14
xpcom/proxy/src/nsProxyEvent.cpp
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@ -427,7 +427,9 @@ nsresult
nsProxyObject::LockedFind(REFNSIID aIID, void **aResult)
{
// This method is only called when the global lock is held.
// XXX assert this
#ifdef DEBUG
nsProxyObjectManager::GetInstance()->GetLock().AssertCurrentThreadOwns();
#endif
nsProxyEventObject *peo;
@ -442,8 +444,8 @@ nsProxyObject::LockedFind(REFNSIID aIID, void **aResult)
nsProxyEventObject *newpeo;
// Both GetClass and QueryInterface call out to XPCOM, so we unlock for them
nsProxyObjectManager* pom = nsProxyObjectManager::GetInstance();
{
nsProxyObjectManager* pom = nsProxyObjectManager::GetInstance();
MutexAutoUnlock unlock(pom->GetLock());
nsProxyEventClass *pec;
@ -473,7 +475,13 @@ nsProxyObject::LockedFind(REFNSIID aIID, void **aResult)
// linked-list check.
for (peo = mFirst; peo; peo = peo->mNext) {
if (peo->GetClass()->GetProxiedIID().Equals(aIID)) {
delete newpeo;
{
// Deleting an nsProxyEventObject can call Release on an
// nsProxyObject, which can only happen when not holding
// the lock.
MutexAutoUnlock unlock(pom->GetLock());
delete newpeo;
}
*aResult = static_cast<nsISupports*>(peo->mXPTCStub);
peo->LockedAddRef();
return NS_OK;