thr_getscheduler(THREAD)
thr_getscheduler --
get the scheduling policy information for a thread
Synopsis
cc [options] -Kthread file
#include <thread.h>
int thr_getscheduler(thread_t tid, sched_param_t *param);
Description
thr_getscheduler sets the sched_param_t pointed to by
param to the policy-specific parameters for tid.
tid parameter
tid is the ID of the thread whose scheduling policy information
thr_getscheduler will retrieve.
Parameters
tid-
a thread ID
param-
a pointer to a sched_param_t
structure containing the policy-specific parameters
(set by thr_getscheduler)
param parameter
param points to a sched_param_t structure
in which thr_getscheduler will store
tid's scheduling policy and parameters.
sched_param_t is defined as follows:
struct {
id_t policy;
long policy_params[POLICY_PARAM_SZ];
} sched_param_t;
See
thr_setscheduler(THREAD)
for the available scheduling policies
and parameters.
Security restrictions
No privileges or special permissions are required to use
thr_getscheduler.
Usage
thr_getscheduler is
used by multithreaded applications which
need to control their scheduling.
Return values
thr_getscheduler returns zero for success
and an error number for failure, as described below.
Errors
If the following condition is detected,
thr_getscheduler fails and
returns the corresponding value:
ESRCH-
No thread can be found in the current process with identity tid.
EINVAL-
param is null.
References
Intro(THREAD),
priocntl(S),
thr_getprio(THREAD),
thr_setprio(THREAD),
thr_setscheduler(THREAD),
thr_yield(THREAD)
© 2005 The SCO Group, Inc. All rights reserved.
SCO OpenServer Release 6.0.0 - 01 June 2005