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    Command:

    pthread_attr_getschedparam

    
    
    
    

    SYNOPSIS

           #include <pthread.h>
    
           int pthread_attr_setschedparam(pthread_attr_t *attr,
                                          const struct sched_param *param);
           int pthread_attr_getschedparam(pthread_attr_t *attr,
                                          struct sched_param *param);
    
           Compile and link with -pthread.
    
    
    

    DESCRIPTION

           The pthread_attr_setschedparam() function sets the scheduling parameter
           attributes  of  the thread attributes object referred to by attr to the
           values specified in the buffer pointed to by param.   These  attributes
           determine  the  scheduling  parameters  of  a  thread created using the
           thread attributes object attr.
    
           The  pthread_attr_getschedparam()  returns  the  scheduling   parameter
           attributes  of  the thread attributes object attr in the buffer pointed
           to by param.
    
           Scheduling parameters are maintained in the following structure:
    
               struct sched_param {
                   int sched_priority;     /* Scheduling priority */
               };
    
           As can be seen,  only  one  scheduling  parameter  is  supported.   For
           details  of  the  permitted  ranges  for  scheduling priorities in each
           scheduling policy, see sched_setscheduler(2).
    
           In order for the parameter setting made by pthread_attr_setschedparam()
           to  have  effect  when  calling  pthread_create(3), the caller must use
           pthread_attr_setinheritsched(3) to set the inherit-scheduler  attribute
           of the attributes object attr to PTHREAD_EXPLICIT_SCHED.
    
    
    

    RETURN VALUE

           On  success,  these functions return 0; on error, they return a nonzero
           error number.
    
    
    

    ERRORS

           POSIX.1 documents EINVAL and ENOTSUP errors for  pthread_attr_setsched-
           param().   On  Linux  these  functions always succeed (but portable and
           future-proof applications should nevertheless handle a  possible  error
           return).
    
    
    

    CONFORMING TO

           POSIX.1-2001.
    
    
    

    NOTES

           See  pthread_attr_setschedpolicy(3) for a list of the thread scheduling
    
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