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https://github.com/ValveSoftware/GameNetworkingSockets.git
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Fletcher Dunn
22 lines
1.1 KiB
Plaintext
22 lines
1.1 KiB
Plaintext
# TSan suppression file for GameNetworkingSockets tests.
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#
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# Lock-order inversion: ConnectionLock -> TableLock in BInitConnection
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#
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# The normal lock order is TableLock first, then ConnectionLock (acquire the
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# table lock to look up a connection by handle, then lock the connection).
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# BInitConnection inverts this: it holds the new connection's ConnectionLock
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# and then acquires the TableLock to register the connection in the table.
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#
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# This is safe because:
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# 1) The SteamNetworkingGlobalLock is held across both paths, so only one
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# thread can be in either code path at a time -- actual concurrent
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# deadlock is impossible.
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# 2) The connection being registered is brand new and not yet in the table,
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# so no thread holding the TableLock could be waiting on this
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# connection's lock.
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#
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# The reverse direction (TableLock -> ConnectionLock) already uses TryLock
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# with a retry loop in InternalGetConnectionByHandle specifically to handle
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# the rare case where the order is inverted.
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deadlock:SteamNetworkingSocketsLib::CSteamNetworkConnectionBase::BInitConnection
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