pthread_attr_setstackaddr()

Set the thread stack address attribute

Synopsis:

#include <pthread.h>

int pthread_attr_setstackaddr( pthread_attr_t * attr,
                               void * stackaddr );

Arguments:

attr

A pointer to the pthread_attr_t structure that defines the attributes to use when creating new threads. For more information, see pthread_attr_init().

stackaddr

A pointer to the block of memory that you want a new thread to use as its stack.

Library:

libc

Use the -l c option to qcc to link against this library. This library is usually included automatically.

Description:

The pthread_attr_setstackaddr() function sets the thread stack address attribute in the attribute object attr to stackaddr.

The default value for the thread stack address attribute is NULL. A thread created with a NULL stack address attribute will have a stack dynamically allocated by the system of minimum size PTHREAD_STACK_MIN. If the system allocates a stack, it reclaims the space when the thread terminates. If you allocate a stack, you must free it.

Returns:

EOK

Success.

Classification:

POSIX 1003.1 THR TSA

Caveats:

The QNX interpretation of PTHREAD_STACK_MIN is enough memory to run a thread that does nothing:

void nothingthread( void )
{
    return;
}

See also:

pthread_attr_getstackaddr(), pthread_attr_init(), pthread_create().