priocntlset(S)
priocntlset --
generalized process scheduler control
Synopsis
#include <sys/types.h>
#include <sys/procset.h>
#include <sys/priocntl.h>
#include <sys/fppriocntl.h>
#include <sys/tspriocntl.h>
long priocntlset(procset_t *psp, int cmd, void *arg);
Description
priocntlset changes the scheduling properties of running processes.
priocntlset has the same functions as the priocntl system call,
but a more general way of specifying the set of processes
whose scheduling properties are to be changed.
cmd-
specifies the function to be performed.
arg-
is a pointer to a structure whose type depends on cmd.
See
priocntl(S)
for the valid values of cmd
psp-
is a pointer to a procset structure, which priocntlset uses
to specify the set of processes whose scheduling properties are to be changed.
The procset_t structure contains the following members:
idop_t p_op; /* operator connecting left/right sets */
idtype_t p_lidtype; /* left set ID type */
id_t p_lid; /* left set ID */
idtype_t p_ridtype; /* right set ID type */
id_t p_rid; /* right set ID */
p_lidtype
and p_lid
-
specify the ID type and ID of one (``left'') set of
processes;
p_ridtype
and p_rid
-
specify the ID type and ID of a second (``right'') set of
processes.
ID types and IDs are specified just as for the
priocntl system call.
p_op
-
specifies the operation to be performed on the two sets of processes
to get the set of processes the system call is to apply to.
The valid values for p_op and the processes they specify are:
POP_DIFF-
set difference: processes in left set and not in right set
POP_AND-
set intersection: processes in both left and right sets
POP_OR-
set union: processes in either left or right sets or both
POP_XOR-
set exclusive-or: processes in left or right set but not in both
The following macro, which is defined in procset.h,
offers a convenient way to initialize a procset structure:
#define setprocset(psp, op, ltype, lid, rtype, rid) \
(psp)->p_op = (op), \
(psp)->p_lidtype = (ltype), \
(psp)->p_lid = (lid), \
(psp)->p_ridtype = (rtype), \
(psp)->p_rid = (rid);
Return values
priocntlset has the same return values as
priocntl(S).
Errors
priocntlset has the same errors as
priocntl(S).
References
priocntl(C),
priocntl(S)
© 2005 The SCO Group, Inc. All rights reserved.
SCO OpenServer Release 6.0.0 - 01 June 2005