pthread_attr_setstackaddr, pthread_attr_getstackaddr - set/get stack address attribute in thread attributes object
#include <pthread.h>
int pthread_attr_setstackaddr(pthread_attr_t *attr, void *stackaddr);
int pthread_attr_getstackaddr(const pthread_attr_t *attr,
void **stackaddr);
Compile and link with -pthread.
These functions are obsolete: do not use them. Use pthread_attr_setstack(3) and pthread_attr_getstack(3) instead.
The pthread_attr_setstackaddr() function sets the
stack address attribute of the thread attributes object referred to by
attr
to the value specified in stackaddr
. This
attribute specifies the location of the stack that should be used by a
thread that is created using the thread attributes object
attr
.
stackaddr
should point to a buffer of at least
PTHREAD_STACK_MIN bytes that was allocated by the
caller. The pages of the allocated buffer should be both readable and
writable.
The pthread_attr_getstackaddr() function returns the
stack address attribute of the thread attributes object referred to by
attr
in the buffer pointed to by stackaddr
.
On success, these functions return 0; on error, they return a nonzero error number.
No errors are defined (but applications should nevertheless handle a possible error return).
These functions are provided by glibc since version 2.1.
For an explanation of the terms used in this section, see attributes(7).
Interface | Attribute | Value |
pthread_attr_setstackaddr(), pthread_attr_getstackaddr() | Thread safety | MT-Safe |
POSIX.1-2001 specifies these functions but marks them as obsolete. POSIX.1-2008 removes the specification of these functions.
Do not use these functions!
They cannot be portably used,
since they provide no way of specifying the direction of growth or the
range of the stack. For example, on architectures with a stack that
grows downward, stackaddr
specifies the next address past the
highest
address of the allocated stack area. However, on
architectures with a stack that grows upward, stackaddr
specifies the lowest
address in the allocated stack area. By
contrast, the stackaddr
used by
pthread_attr_setstack(3) and
pthread_attr_getstack(3), is always a pointer to the
lowest address in the allocated stack area (and the stacksize
argument specifies the range of the stack).
pthread_attr_init(3), pthread_attr_setstack(3), pthread_attr_setstacksize(3), pthread_create(3), pthreads(7)
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