|  | @@ -230,7 +230,9 @@ struct transport {
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				|  |  |    /* basic state management - what are we doing at the moment? */
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				|  |  |    gpr_uint8 reading;
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				|  |  |    gpr_uint8 writing;
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				|  |  | +  /** are we calling back (via cb) with a channel-level event */
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				|  |  |    gpr_uint8 calling_back_channel;
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				|  |  | +  /** are we calling back any grpc_transport_op completion events */
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				|  |  |    gpr_uint8 calling_back_ops;
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				|  |  |    gpr_uint8 destroying;
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				|  |  |    gpr_uint8 closed;
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