Index Index for
Section 3
Index Alphabetical
listing for P
Bottom of page Bottom of
page		 

pthread_attr_setstackaddr(3)


NAME

  pthread_attr_setstackaddr - Changes the stack address and size of the
  specified thread attributes object


SYNOPSIS

  #include <pthread.h>

  int pthread_attr_setstackaddr_np(
	  pthread_attr_t *attr,
	  void *stackaddr,
	  size_t size );


LIBRARY

  DECthreads POSIX 1003.1c Library (libpthread.so)


STANDARDS

  Interfaces documented on this reference page conform to industry standards
  as follows:

  IEEE Std 1003.1c-1995, POSIX System Application Program Interface


PARAMETERS

  attr
      Address of the thread attributes object whose stack address attribute
      is to be modified.

  stackaddr
      New value for the address of the stack region of the thread attributes
      object specified by attr.

  size
      The size of the stack region in bytes.


DESCRIPTION

  This routine uses the values specified in the stackaddr and size arguments
  to set the base stack address and size of the thread attributes object
  specified in the attr argument.

  When creating a thread, use a thread attributes object to specify
  nondefault values for thread attributes. The default value for the stack
  address attribute of an initialized thread attributes object is NULL.

  Unlike pthread_attr_setstackaddr(3), this routine is a much more reliable
  portable interface. With the POSIX standard pthread_attr_setstackaddr(3), a
  stack is specified using a single, undefined, address. An implementation of
  the standard can only assume that the specified value represents the value
  to which the thread's stack pointer should be set when beginning execution.
  However, this requires the application to know how the machine uses the
  stack.  For example, a stack may grow either up (to higher addresses) or
  down (to lower addresses), and may be decreased (or increased) either
  before or after storing a new value.

  DECthreads provides an alternative interface with
  pthread_attr_setstackaddr_np(3). Instead of specifying a stack address, you
  specify the base (lowest) address and the size.


RETURN VALUES

  If an error condition occurs, this routine returns an integer value
  indicating the type of error. Possible return values are as follows:

  0   Successful completion.

  [EINVAL]
      The value specified by attr is not a valid thread attributes object.


ERRORS

  None


SEE ALSO

  Functions: pthread_attr_getstackaddr_np(3)

  Manuals: Guide to DECthreads and Programmer's Guide

Index Index for
Section 3
Index Alphabetical
listing for P
Top of page Top of
page