+ * #define ForeignCall 6
+ * #define BlockedOnMVar 7
+ * #define BlockedOnBlackHole 8
+ * #define BlockedOnRead 9
+ * #define BlockedOnWrite 10
+ * #define BlockedOnDelay 11
+ * #define BlockedOnSTM 12
+ * #define BlockedOnDoProc 13
+ * #define BlockedOnCCall -- not used (see ForeignCall)
+ * #define BlockedOnCCall_NoUnblockExc -- not used (see ForeignCall)
+ * #define BlockedOnMsgThrowTo 16