NAME
pthread_attr_getinheritsched —
get and
set “inheritsched” attribute
LIBRARY
POSIX Threads Library (libpthread, -lpthread)
SYNOPSIS
#include <pthread.h>
int
pthread_attr_getinheritsched(
const
pthread_attr_t * restrict attr,
int * restrict
inheritsched);
int
pthread_attr_setinheritsched(
pthread_attr_t
*attr,
int
inheritsched);
DESCRIPTION
The
pthread_attr_getinheritsched() and
pthread_attr_setinheritsched() functions get and set,
respectively, the inherit scheduler attribute,
inheritsched, in the
attr object.
The
inheritsched parameter specifies whether a tread
created by using
attr will obtain its scheduling
attributes directly from
attr or whether it will inherit
these from the calling thread.
Two values are possible for
inheritsched:
-
-
PTHREAD_INHERIT_SCHED
- The thread scheduling attributes will be inherited from the
creating thread and the ones in attr are
ignored.
-
-
PTHREAD_EXPLICIT_SCHED
- The thread scheduling attributes will be set to the
corresponding values in attr.
The following thread scheduling attributes are affected by
inheritsched:
RETURN VALUES
If successful, both functions return 0. Otherwise, an error number is returned
to indicate the error.
COMPATIBILITY
The standard leaves it unspecified which (if any) is the default inherit
scheduler attribute in a newly initialized attribute object.
ERRORS
No errors are defined for
pthread_attr_getinheritsched().
The
pthread_attr_setinheritsched() function may fail if:
-
-
- [
EINVAL
]
- The value specified by inheritsched
is invalid.
SEE ALSO
pthread_attr(3)
STANDARDS
Both functions conform to
IEEE Std 1003.1-2008
(“POSIX.1”).