pthread_attr_setinheritsched(3) [netbsd man page]

PTHREAD_ATTR_GETINHERITEDSCHED(3)			   BSD Library Functions Manual 			 PTHREAD_ATTR_GETINHERITEDSCHED(3)

NAME

     pthread_attr_getinheritedsched -- 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:

	   o   Scheduling policy; see pthread_attr_setschedpolicy(3).

	   o   Scheduling parameter; see pthread_attr_getschedparam(3).

	   o   Scheduling contention scope; see pthread_attr_getscope(3).

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'').

BSD
								   July 7, 2010 							       BSD

pthread_attr_getinheritsched(3C)										  pthread_attr_getinheritsched(3C)

NAME

       pthread_attr_getinheritsched, pthread_attr_setinheritsched - get or set inheritsched attribute

SYNOPSIS

       cc -mt [ flag... ] file... -lpthread [ library... ]
       #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);

       The  functions  pthread_attr_setinheritsched()  and pthread_attr_getinheritsched(), respectively, set and get the inheritsched attribute in
       the attr argument.

       When the attribute objects are used by pthread_create(), the inheritsched attribute determines how the other scheduling attributes  of  the
       created thread are to be set:

       PTHREAD_INHERIT_SCHED	       Specifies  that	the  scheduling  policy  and  associated  attributes are to be inherited from the creating
				       thread, and the scheduling attributes in this attr argument are to be ignored.

       PTHREAD_EXPLICIT_SCHED	       Specifies that the scheduling policy and associated attributes are to be set to	the  corresponding  values
				       from this attribute object.

       The symbols  PTHREAD_INHERIT_SCHED and  PTHREAD_EXPLICIT_SCHED are defined in the header <pthread.h>.

       If  successful,	the  pthread_attr_setinheritsched()  and pthread_attr_getinheritsched() functions return  0. Otherwise, an error number is
       returned to indicate the error.

       The pthread_attr_setinheritsched() or pthread_attr_getinheritsched() functions may fail if:

       EINVAL	       attr or inheritsched 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_getschedparam(3C),	 pthread_attr_init(3C),  pthread_attr_setscope(3C),  pthread_attr_setschedpolicy(3C),  pthread_create(3C),
       pthread_setschedparam(3C), attributes(5), standards(5)

								    23 Mar 2005 				  pthread_attr_getinheritsched(3C)