get_id()
Definition
INT get_id ( <INT processTypeID> )
Returns a ProcessID of a process of the specified ProcessType. On the next call of get_id() in the same process and in the same frame, the next process will be returned of the given type. After a frame statement, get_id() is reset and will return the first process of the given processType. When there are no more processes of a given type, which have not been returned, it will return 0.
get_id(0) returns processes of any type.
Parameters
- INT processTypeID - The ProcessTypeID of the ProcessType to get the processes’ ProcessID of.
Returns
INT : The ProcessID of a process of the given ProcessType.
0- There are no more processes of the given processType, which have not been returned.>0- The processID of a process of the given processType.
Example
Program example;
Begin
signaltype(type Monkey,s_kill);
End
/**
* Empty process
*/
Process Monkey()
Begin
End
/**
* Signals every process of type 't' the signal 'signal'.
*/
Function int signaltype(int t, int signal)
Begin
while( (x=get_id(t)) ) // while there is an unprocessed process left and store that in 'x'
signal(x,signal); // signal the process with processID 'x'.
end
End
// Of course, the very observant of you already noticed that signaltype(my_type,my_signal)
// does the same thing as the function signal(my_type,my_signal), but this is just to
// illustrate the workings.
/**
* Signals every process the signal 'signal'.
*/
Function int signalall(int signal)
Begin
while( (x=get_id(0)) ) // while there is an unprocessed process left and store that in 'x'
signal(x,signal); // signal the process with processID 'x'.
end
End
// get_id(0) returns a process of any type. This is a possible implementation of a
// function which signals all existing processes. Note that this can be dangerous to use,
// as in some cases you might want one or two processes to stay alive.Used in example: signal().