pthread_attr_getscope(3C) pthread_attr_getscope(3C)
NAME
pthread_attr_getscope, pthread_attr_setscope - get or set contentionscope attribute
SYNOPSIS
cc -mt [ flag... ] file... -lpthread [ library... ]
#include <pthread.h>
int pthread_attr_getscope(const pthread_attr_t *restrict attr, int *restrict contentionscope);
int pthread_attr_setscope(pthread_attr_t *attr, int contentionscope);
The pthread_attr_setscope() and pthread_attr_getscope() functions are used to set and get the contentionscope attribute in the attr object.
The contentionscope attribute can have the value PTHREAD_SCOPE_SYSTEM, signifying system scheduling contention scope, or
PTHREAD_SCOPE_PROCESS, signifying process scheduling contention scope.
The symbols PTHREAD_SCOPE_SYSTEM and PTHREAD_SCOPE_PROCESS are defined by the header <pthread.h>.
If successful, the pthread_attr_setscope() and pthread_attr_getscope() functions return 0. Otherwise, an error number is returned to indi-
cate the error.
The pthread_attr_setscope(), or pthread_attr_getscope(), function may fail if:
EINVAL attr or contentionscope is invalid.
USAGE
After these attributes have been set, a thread can be created with the specified attributes using pthread_create(). Using these routines
does not affect the current running thread.
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Standard |
+-----------------------------+-----------------------------+
|MT-Level |MT-Safe |
+-----------------------------+-----------------------------+
pthread_attr_init(3C), pthread_attr_setinheritsched(3C), pthread_attr_setschedpolicy(3C), pthread_attr_setschedparam(3C), pthread_cre-
ate(3C), pthread_setschedparam(3C), attributes(5), standards(5)
23 Mar 2005 pthread_attr_getscope(3C)