SCHED_GETPARAM(P) POSIX Programmer's Manual SCHED_GETPARAM(P)
sched_getparam - get scheduling parameters (REALTIME)
int sched_getparam(pid_t pid, struct sched_param *param);
The sched_getparam() function shall return the scheduling parameters of a process speci-
fied by pid in the sched_param structure pointed to by param.
If a process specified by pid exists, and if the calling process has permission, the
scheduling parameters for the process whose process ID is equal to pid shall be returned.
If pid is zero, the scheduling parameters for the calling process shall be returned. The
behavior of the sched_getparam() function is unspecified if the value of pid is negative.
Upon successful completion, the sched_getparam() function shall return zero. If the call
to sched_getparam() is unsuccessful, the function shall return a value of -1 and set errno
to indicate the error.
The sched_getparam() function shall fail if:
EPERM The requesting process does not have permission to obtain the scheduling parameters
of the specified process.
ESRCH No process can be found corresponding to that specified by pid.
The following sections are informative.
sched_getscheduler() , sched_setparam() , sched_setscheduler() , the Base Definitions vol-
ume of IEEE Std 1003.1-2001, <sched.h>
Portions of this text are reprinted and reproduced in electronic form from IEEE Std
1003.1, 2003 Edition, Standard for Information Technology -- Portable Operating System
Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by
the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the
event of any discrepancy between this version and the original IEEE and The Open Group
Standard, the original IEEE and The Open Group Standard is the referee document. The orig-
inal Standard can be obtained online at http://www.opengroup.org/unix/online.html .
IEEE/The Open Group 2003 SCHED_GETPARAM(P)