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
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.
The specification of the stackaddr attribute presents several ambiguities
that make portable 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
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 original
Standard can be obtained online at http://www.opengroup.org/unix/online.html