SCHED_GETPARAM(3C) Standard C Library Functions SCHED_GETPARAM(3C)
NAME
sched_getparam - get scheduling parameters
SYNOPSIS
#include <sched.h>
int sched_getparam(
pid_t pid,
struct sched_param *param);
DESCRIPTION
The
sched_getparam() function returns the scheduling parameters of a
process specified by
pid in the
sched_param structure pointed to by
param. The only required member of
param is
sched_priority.
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 will be returned.
If
pid is 0, the scheduling parameters for the calling process will
be returned. The behavior of the
sched_getparam() function is
unspecified if the value of
pid is negative.
RETURN VALUES
Upon successful completion, the
sched_getparam() function returns
0.
If the call to
sched_getparam() is unsuccessful, the function returns
-1 and sets
errno to indicate the error.
ERRORS
The
sched_getparam() function will 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.
ATTRIBUTES
See
attributes(7) for descriptions of the following attributes:
+--------------------+-------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-------------------+
|Interface Stability | Committed |
+--------------------+-------------------+
|MT-Level | MT-Safe |
+--------------------+-------------------+
|Standard | See
standards(7). |
+--------------------+-------------------+
SEE ALSO
sched_getscheduler(3C),
sched_setparam(3C),
sched_setscheduler(3C),
sched.h(3HEAD),
librt(3LIB),
attributes(7),
standards(7) April 1, 2008 SCHED_GETPARAM(3C)
