pthread_attr_init(3c) opensolaris man page | unix.com

pthread_attr_init(3C)					   Standard C Library Functions 				     pthread_attr_init(3C)

NAME
       pthread_attr_init, pthread_attr_destroy - initialize or destroy threads attribute object

SYNOPSIS
       cc -mt [ flag... ] file... -lpthread [ library... ]
       #include <pthread.h>

       int pthread_attr_init(pthread_attr_t *attr);

       int pthread_attr_destroy(pthread_attr_t *attr);

DESCRIPTION
       The  function  pthread_attr_init()  initializes a thread attributes object attr with the default value for all of the individual attributes
       used by a given implementation.

       The resulting attribute object (possibly modified by setting individual attribute values),  when  used  by  pthread_create(),  defines  the
       attributes of the thread created. A single attributes object can be used in multiple simultaneous calls to pthread_create().

       The pthread_attr_init() function initializes a thread attributes object ( attr) with the default value for each attribute as follows:

	   Attribute		 Default Value		      Meaning of Default
       -----------------------------------------------------------------------------------
       contentionscope	    PTHREAD_SCOPE_PROCESS     resource competition within process
       detachstate	    PTHREAD_CREATE_JOINABLE   joinable by other threads
       stackaddr	    NULL		      stack allocated by system
       stacksize	    0			      1 or 2 megabyte
       priority 	    0			      priority of the thread
       policy		    SCHED_OTHER 	      traditional time-sharing policy
       inheritsched	    PTHREAD_INHERIT_SCHED     scheduling  policy  and  parameters
						      are  inherited  from  the  creating
						      thread
       guardsize	    PAGESIZE		      size  of	guard area for a thread's
						      created stack

       The pthread_attr_destroy() function destroys a thread attributes object ( attr), which cannot be  reused  until	it  is	reinitialized.	An
       implementation  may  cause  pthread_attr_destroy()  to  set  attr  to  an implementation-dependent invalid value. The behavior of using the
       attribute after it has been destroyed is undefined.

RETURN VALUES
       Upon successful completion, pthread_attr_init() and pthread_attr_destroy() return a value of  0. Otherwise, an error number is returned	to
       indicate the error.

ERRORS
       The  pthread_attr_init() function will fail if:

       ENOMEM	 Insufficient memory exists to initialize the thread attributes object.

       The  pthread_attr_destroy() function may fail if:

       EINVAL	 attr is invalid.

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Committed 		   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+
       |Standard		     |See standards(5). 	   |
       +-----------------------------+-----------------------------+

SEE ALSO
       sysconf(3C),   pthread_attr_getdetachstate(3C),	 pthread_attr_getguardsize(3C),  pthread_attr_getinheritsched(3C),  pthread_attr_getsched-
       param(3C),  pthread_attr_getschedpolicy(3C),   pthread_attr_getscope(3C),   pthread_attr_getstackaddr(3C),   pthread_attr_getstacksize(3C),
       pthread_attr_setdetachstate(3C),     pthread_attr_setguardsize(3C),    pthread_attr_setinheritsched(3C),    pthread_attr_setschedparam(3C),
       pthread_attr_setschedpolicy(3C),  pthread_attr_setscope(3C),  pthread_attr_setstackaddr(3C),  pthread_attr_setstacksize(3C),   pthread_cre-
       ate(3C), attributes(5), standards(5)

SunOS 5.11							    1 Apr 2008						     pthread_attr_init(3C)