extern void hs_hpc_tick(int globIx,struct StgTSO_ *current_tso);
extern void hs_hpc_raise_event(struct StgTSO_ *current_tso);
extern void hs_hpc_thread_finished_event(struct StgTSO_ *current_tso);
+extern void hs_hpc_read(char *filename);
+extern void hs_hpc_write(char *filename);
#if defined(mingw32_HOST_OS)
extern int rts_InstallConsoleEvent ( int action, StgStablePtr *handler );