ox_select

ox_select(nlist[,timeout])

:: Returns the list of process identifiers on which data is available.

return

list

nlist

list of integers (process identifier)

timeout

number

• Returns the list of process identifiers on which data is available.
• If all the processes in nlist are running, it blocks until one of the processes returns data. If timeout is specified, it waits for only timeout seconds.
• By sending SM_popCMO or SM_popSerializedLocalObject with ox_push_cmd() in advance and by examining the process status with ox_select(), one can avoid a hanging up caused by ox_pop_local() or ox_pop_cmo(). In such a case, data can be received by ox_get().

ox_launch();
0
[220] ox_launch();
1
[221] ox_launch();
2
[222] ox_rpc(2,"fctr",x^500-y^500);
0
[223] ox_rpc(1,"fctr",x^100-y^100);
0
[224] ox_rpc(0,"fctr",x^10-y^10);  
0
[225] P=[0,1,2];
[0,1,2]
[226] map(ox_push_cmd,P,258);
[0,0,0]
[227] ox_select(P);
[0]
[228] ox_get(0);   
[[1,1],[x^4+y*x^3+y^2*x^2+y^3*x+y^4,1],
[x^4-y*x^3+y^2*x^2-y^3*x+y^4,1],[x-y,1],[x+y,1]]

References

section ox_pop_cmo, ox_pop_local, section ox_push_cmd, ox_sync, section ox_get

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