pthread_attr_setschedparam(3) [netbsd man page]

PTHREAD_ATTR_GETSCHEDPARAM(3)				   BSD Library Functions Manual 			     PTHREAD_ATTR_GETSCHEDPARAM(3)

NAME

     pthread_attr_getschedparam -- get and set scheduling attributes

LIBRARY

     POSIX Threads Library (libpthread, -lpthread)

SYNOPSIS

     #include <pthread.h>

     int
     pthread_attr_getschedparam(const pthread_attr_t * restrict attr, struct sched_param * restrict param);

     int
     pthread_attr_setschedparam(pthread_attr_t *attr, const struct sched_param *param);

     int
     pthread_attr_getschedpolicy(const pthread_attr_t * restrict attr, int * restrict policy);

     int
     pthread_attr_setschedpolicy(pthread_attr_t *attr, int policy);

DESCRIPTION

     The pthread_attr_getschedparam() and pthread_attr_setschedparam() functions obtain and set the scheduling parameter attribute in the attr
     object.  The sched_param structure is defined in <sched.h>.  At minimum this structure contains only a single member, sched_priority.  Refer
     to pthread_schedparam(3) and sched(3) for additional details.

     The pthread_attr_getschedpolicy() and pthread_attr_setschedpolicy() functions get and set the scheduling policy attribute, policy, in the
     attr object.  The supported values of policy are the same ones listed in pthread_schedparam(3).

RETURN VALUES

     If successful, all described functions return 0.  Otherwise, an error number is returned to indicate the error.

ERRORS

     The pthread_attr_getschedparam() function may fail if:

     [EINVAL]		An invalid parameter was specified.

     The pthread_attr_setschedparam() function may fail if:

     [EINVAL]		An invalid parameter was specified.

     [ENOMEM]		There was insufficient memory.

     The pthread_attr_setschedpolicy() function may fail if:

     [ENOMEM]		There was insufficient memory.

     [ENOTSUP]		An unsupported policy was specified.

     No errors are defined for pthread_attr_getschedpolicy().

SEE ALSO

     pthread_attr(3), pthread_schedparam(3), sched(3)

STANDARDS

     These functions conform to IEEE Std 1003.1-2008 (``POSIX.1'').

BSD
								   July 7, 2010 							       BSD

PTHREAD_ATTR(3) 					   BSD Library Functions Manual 					   PTHREAD_ATTR(3)

NAME

     pthread_attr_destroy, pthread_attr_getdetachstate, pthread_attr_getinheritsched, pthread_attr_getschedparam, pthread_attr_getschedpolicy,
     pthread_attr_getscope, pthread_attr_getstackaddr, pthread_attr_getstacksize, pthread_attr_init, pthread_attr_setdetachstate,
     pthread_attr_setinheritsched, pthread_attr_setschedparam, pthread_attr_setschedpolicy, pthread_attr_setscope, pthread_attr_setstackaddr,
     pthread_attr_setstacksize -- thread attribute operations

SYNOPSIS

     #include <pthread.h>

     int
     pthread_attr_destroy(pthread_attr_t *attr);

     int
     pthread_attr_getdetachstate(const pthread_attr_t *attr, int *detachstate);

     int
     pthread_attr_getinheritsched(const pthread_attr_t *restrict attr, int *restrict inheritsched);

     int
     pthread_attr_getschedparam(const pthread_attr_t *restrict attr, struct sched_param *restrict param);

     int
     pthread_attr_getschedpolicy(const pthread_attr_t *restrict attr, int *restrict policy);

     int
     pthread_attr_getscope(const pthread_attr_t *restrict attr, int *restrict contentionscope);

     int
     pthread_attr_getstackaddr(const pthread_attr_t *restrict attr, void **restrict stackaddr);

     int
     pthread_attr_getstacksize(const pthread_attr_t *restrict attr, size_t *restrict stacksize);

     int
     pthread_attr_init(pthread_attr_t *attr);

     int
     pthread_attr_setdetachstate(pthread_attr_t *attr, int detachstate);

     int
     pthread_attr_setinheritsched(pthread_attr_t *attr, int inheritsched);

     int
     pthread_attr_setschedparam(pthread_attr_t *restrict attr, const struct sched_param *restrict param);

     int
     pthread_attr_setschedpolicy(pthread_attr_t *attr, int policy);

     int
     pthread_attr_setscope(pthread_attr_t *attr, int contentionscope);

     int
     pthread_attr_setstackaddr(pthread_attr_t *attr, void *stackaddr);

     int
     pthread_attr_setstacksize(pthread_attr_t *attr, size_t stacksize);

DESCRIPTION

     Thread attributes are used to specify parameters to pthread_create().  One attribute object can be used in multiple calls to
     pthread_create(), with or without modifications between calls.

     The pthread_attr_init() function initializes attr with all the default thread attributes.

     The pthread_attr_destroy() function destroys attr.

     The pthread_attr_set*() functions set the attribute that corresponds to each function name.

     The pthread_attr_get*() functions copy the value of the attribute that corresponds to each function name to the location pointed to by the
     second function parameter.

RETURN VALUES

     If successful, these functions return 0.  Otherwise, an error number is returned to indicate the error.

ERRORS

     pthread_attr_init() will fail if:

     [ENOMEM]		Out of memory.

     pthread_attr_destroy() will fail if:

     [EINVAL]		Invalid value for attr.

     pthread_attr_setstacksize() will fail if:

     [EINVAL]		Invalid value for attr.

     [EINVAL]		stacksize is less than PTHREAD_STACK_MIN.

     [EINVAL]		stacksize is not a multiple of the system page size.

     pthread_attr_setdetachstate() will fail if:

     [EINVAL]		Invalid value for attr or detachstate.

     pthread_attr_setinheritsched() will fail if:

     [EINVAL]		Invalid value for attr.

     pthread_attr_setschedparam() will fail if:

     [EINVAL]		Invalid value for attr.

     [ENOTSUP]		Invalid value for param.

     pthread_attr_setschedpolicy() will fail if:

     [EINVAL]		Invalid value for attr.

     [ENOTSUP]		Invalid or unsupported value for policy.

     pthread_attr_setscope() will fail if:

     [EINVAL]		Invalid value for attr.

     [ENOTSUP]		Invalid or unsupported value for contentionscope.

SEE ALSO

     pthread_create(3)

STANDARDS

     pthread_attr_init(), pthread_attr_destroy(), pthread_attr_setstacksize(), pthread_attr_getstacksize(), pthread_attr_setstackaddr(),
     pthread_attr_getstackaddr(), pthread_attr_setdetachstate(), and pthread_attr_getdetachstate() conform to ISO/IEC 9945-1:1996 (``POSIX.1'')

     pthread_attr_setinheritsched(), pthread_attr_getinheritsched(), pthread_attr_setschedparam(), pthread_attr_getschedparam(),
     pthread_attr_setschedpolicy(), pthread_attr_getschedpolicy(), pthread_attr_setscope(), and pthread_attr_getscope() conform to Version 2 of
     the Single UNIX Specification (``SUSv2'')

BSD
								  April 28, 2000							       BSD