SIMPLE SOLUTIONS

PTHREAD_ATTR_SETSCHEDPOLICY(3) - man page online | library functions

Set/get scheduling policy attribute in thread.

Chapter
2015-08-08
PTHREAD_ATTR_SETSCHEDPOLICY(3)      Linux Programmer's Manual      PTHREAD_ATTR_SETSCHEDPOLICY(3)

NAME

pthread_attr_setschedpolicy, pthread_attr_getschedpolicy - set/get scheduling policy attribute in thread attributes object

SYNOPSIS

#include <pthread.h> int pthread_attr_setschedpolicy(pthread_attr_t *attr, int policy); int pthread_attr_getschedpolicy(const pthread_attr_t *attr, int *policy); Compile and link with -pthread.

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 seman‐ tics 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). ┌───────────────────────────────┬───────────────┬─────────┐ │Interface │ Attribute │ Value │ ├───────────────────────────────┼───────────────┼─────────┤ │pthread_attr_setschedpolicy(), │ Thread safety │ MT-Safe │ │pthread_attr_getschedpolicy() │ │ │ └───────────────────────────────┴───────────────┴─────────┘

CONFORMING TO

POSIX.1-2001, POSIX.1-2008.

EXAMPLE

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)

COLOPHON

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Linux 2015-08-08 PTHREAD_ATTR_SETSCHEDPOLICY(3)
This manual Reference Other manuals
pthread_attr_setschedpolicy(3) referred by pthread_attr_init(3) | pthread_attr_setinheritsched(3) | pthread_attr_setschedparam(3) | pthread_attr_setscope(3) | pthread_getattr_np(3) | pthread_setschedparam(3) | pthread_setschedprio(3)
refer to attributes(7) | 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)