opensolaris man page for pthread_attr_getstack

pthread_attr_getstack(3C)				   Standard C Library Functions 				 pthread_attr_getstack(3C)

NAME
       pthread_attr_getstack, pthread_attr_setstack - get or set stack attributes

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

       int pthread_attr_getstack(const pthread_attr_t *restrict attr,
	    void **restrict stackaddr, size_t *restrict stacksize);

       int pthread_attr_setstack(pthread_attr_t * attr, void *stackaddr,
	    size_t stacksize);

DESCRIPTION
       The pthread_attr_getstack() and pthread_attr_setstack() functions, respectively, get and set the thread creation stack attributes stackaddr
       and stacksize in the attr object.

       The stack attributes specify the area of storage to be used for the created thread's stack. The base (lowest addressable byte) of the stor-
       age  is	stackaddr, and the size of the storage is stacksize bytes. The stacksize argument must be at least {PTHREAD_STACK_MIN}. The stack-
       addr argument must be aligned appropriately to be used as a stack; for example, pthread_attr_setstack() might fail with EINVAL  if  (stack-
       addr & 0x7) is not 0. All pages within the stack described by stackaddr and stacksize are both readable and writable by the thread.

RETURN VALUES
       Upon successful completion, these functions return a 0; otherwise, an error number is returned to indicate the error.

       The pthread_attr_getstack() function stores the stack attribute values in stackaddr and stacksize if successful.

ERRORS
       The pthread_attr_setstack() function will fail if:

       EINVAL	 The value of stacksize is less than {PTHREAD_STACK_MIN}.

       The pthread_attr_setstack() function may fail if:

       EACCES	 The stack page(s) described by stackaddr and stacksize are not both readable and writable by the thread.

       EINVAL	 The value of stackaddr does not have proper alignment to be used as a stack, or (stackaddr + stacksize) lacks proper alignment.

USAGE
       These  functions  are  appropriate for use by applications in an environment where the stack for a thread must be placed in some particular
       region of memory.

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Async-Signal-Safe 	   |
       +-----------------------------+-----------------------------+

SEE ALSO
       pthread_attr_init(3C), pthread_attr_setdetachstate(3C), pthread_attr_setstacksize(3C), pthread_create(3C), attributes(5)

SunOS 5.11							    23 Mar 2005 					 pthread_attr_getstack(3C)