Linux cli command pthread_attr_setschedpolicy

➡ A Linux man page (short for manual page) is a form of software documentation found on Linux and Unix-like operating systems. This man-page explains the command pthread_attr_setschedpolicy and provides detailed information about the command pthread_attr_setschedpolicy, system calls, library functions, and other aspects of the system, including usage, options, and examples of _. You can access this man page by typing man followed by the pthread_attr_setschedpolicy.

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NAME 🖥️ pthread_attr_setschedpolicy 🖥️

set/get scheduling policy attribute in thread attributes object

LIBRARY

POSIX threads library (libpthread, -lpthread)

SYNOPSIS

#include <pthread.h>
int pthread_attr_setschedpolicy(pthread_attr_t *attr, int policy);
int pthread_attr_getschedpolicy(const pthread_attr_t *restrict attr,
 int *restrict policy);

DESCRIPTION

The pthread_attr_setschedpolicy() function sets the scheduling policy attribute of the thread attributes object referred to by attr to the value specified in policy. This attribute determines the scheduling policy of a thread created using the thread attributes object attr.

The supported values for policy are SCHED_FIFO, SCHED_RR, and SCHED_OTHER, with the semantics described in sched(7).

The pthread_attr_getschedpolicy() returns the scheduling policy attribute of the thread attributes object attr in the buffer pointed to by policy.

In order for the policy setting made by pthread_attr_setschedpolicy() 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

pthread_attr_setschedpolicy() can fail with the following error:

EINVAL
Invalid value in policy.

POSIX.1 also documents an optional ENOTSUP error (“attempt was made to set the attribute to an unsupported value”) for pthread_attr_setschedpolicy().

ATTRIBUTES

For an explanation of the terms used in this section, see attributes(7).

InterfaceAttributeValue

pthread_attr_setschedpolicy(), pthread_attr_getschedpolicy()

Thread safetyMT-Safe

STANDARDS

POSIX.1-2008.

HISTORY

glibc 2.0. POSIX.1-2001.

EXAMPLES

See pthread_setschedparam(3).

SEE ALSO

pthread_attr_init(3), pthread_attr_setinheritsched(3), pthread_attr_setschedparam(3), pthread_create(3), pthread_setschedparam(3), pthread_setschedprio(3), pthreads(7), sched(7)

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