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Linux 2.6 - man page for pthread_attr_setstackaddr (linux section 3posix)

PTHREAD_ATTR_GETSTACKADDR(P)	    POSIX Programmer's Manual	     PTHREAD_ATTR_GETSTACKADDR(P)

NAME
       pthread_attr_getstackaddr, pthread_attr_setstackaddr - get and set the stackaddr attribute

SYNOPSIS
       #include <pthread.h>

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

DESCRIPTION
       The  pthread_attr_getstackaddr()  and pthread_attr_setstackaddr() functions, respectively,
       shall get and set the thread creation stackaddr attribute in the attr object.

       The stackaddr attribute specifies the location of storage  to  be  used	for  the  created
       thread's stack. The size of the storage shall be at least {PTHREAD_STACK_MIN}.

RETURN VALUE
       Upon  successful  completion,  pthread_attr_getstackaddr() and pthread_attr_setstackaddr()
       shall return a value of 0; otherwise, an error number shall be returned	to  indicate  the
       error.

       The pthread_attr_getstackaddr() function stores the stackaddr attribute value in stackaddr
       if successful.

ERRORS
       No errors are defined.

       These functions shall not return an error code of [EINTR].

       The following sections are informative.

EXAMPLES
       None.

APPLICATION USAGE
       The specification of the stackaddr attribute presents several ambiguities that make porta-
       ble use of these interfaces impossible. The description of the single address parameter as
       a "stack" does not specify a particular relationship between the address and  the  "stack"
       implied	by  that address. For example, the address may be taken as the low memory address
       of a buffer intended for use as a stack, or it may be taken as the address to be  used  as
       the  initial  stack  pointer register value for the new thread. These two are not the same
       except for a machine on which the stack grows "up" from low memory to high, and on which a
       "push"  operation  first  stores the value in memory and then increments the stack pointer
       register. Further, on a machine where the stack grows "down"  from  high  memory  to  low,
       interpretation  of the address as the "low memory" address requires a determination of the
       intended size of  the  stack.  IEEE Std 1003.1-2001  has  introduced  the  new  interfaces
       pthread_attr_setstack() and pthread_attr_getstack() to resolve these ambiguities.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       pthread_attr_destroy()	,   pthread_attr_getdetachstate()   ,  pthread_attr_getstack()	,
       pthread_attr_getstacksize() , pthread_attr_setstack() , pthread_create() , the Base  Defi-
       nitions volume of IEEE Std 1003.1-2001, <limits.h>, <pthread.h>

COPYRIGHT
       Portions  of  this  text  are  reprinted  and  reproduced in electronic form from IEEE Std
       1003.1, 2003 Edition, Standard for Information Technology  --  Portable	Operating  System
       Interface  (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by
       the Institute of Electrical and Electronics Engineers, Inc and  The  Open  Group.  In  the
       event  of  any  discrepancy  between this version and the original IEEE and The Open Group
       Standard, the original IEEE and The Open Group Standard is the referee document. The orig-
       inal Standard can be obtained online at http://www.opengroup.org/unix/online.html .

IEEE/The Open Group			       2003		     PTHREAD_ATTR_GETSTACKADDR(P)


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