Getting the Thread Policy and Scheduling Parameters

pthread_getschedparam(3C) gets the scheduling policy and scheduling parameters of an individual thread.

pthread_getschedparam Syntax

int  pthread_getschedparam(pthread_t tid, int *restrict policy,
    struct sched_param *restrict param);

#include <pthread.h>

pthread_t tid;
sched_param param;
int priority;
int policy;
int ret;

/* scheduling parameters of target thread */
ret = pthread_getschedparam (tid, &policy, &param);

/* sched_priority contains the priority of the thread */
priority = param.sched_priority; 

pthread_getschedparam Return Values

pthread_getschedparam() returns zero after completing successfully. Any other return value indicates that an error occurred. When the following condition occurs, the function fails and returns the corresponding value.

ESRCH

Description:

The value specified by tid does not refer to an existing thread.