pthread_attr_setstackaddr - Changes the stack address
attribute of the specified thread attributes object
void *stackaddr );
DECthreads POSIX 1003.1c Library (libpthread.so)
Interfaces documented on this reference page conform to
industry standards as follows:
IEEE Std 1003.1c-1995, POSIX System Application Program
Address of the thread attributes object whose stack
address attribute is to be modified. New value for the
stack address attribute of the thread attributes object
specified by attr.
This routine uses the value specified in the stackaddr
argument to set the stack address attribute 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 stack
address attribute of a thread attributes object points to
the origin of the stack for a new thread.
The default value for the stack address attribute of an
initialized thread attributes object is NULL.
For your program to calculate a value for the stackaddr
attribute, note that: Your program must allocate the memory
that will be used for the new thread's stack. On
Tru64 UNIX, to create a new thread using a thread
attributes object, the stackaddr attribute must be an
address that points to the high-memory end of the memory
region allocated for the stack. This address must point to
the highest even-boundary quadword in the allocated memory
Also note that: If you use the pthread_attr_setstackaddr(3) routine to set a thread attributes object's stack
address attribute and use that attributes object to create
a new thread, DECthreads ignores the attributes object's
guardsize attribute and provides no thread stack guard
area for the new thread. If you use the same thread
attributes object to create more than one thread and each
created thread uses a nondefault stack address, you must
use the pthread_attr_setstackaddr(3) routine to set a
unique stack address attribute value for each new thread
created using that attributes object.
Correct use of this routine depends upon details of the
target platform's stack architecture. Thus, this routine
cannot be used in a portable manner.
The size of the stack must be at least PTHREAD_STACK_MIN
bytes (see pthread.h). However, because DECthreads must
use a portion of this stack memory to begin thread execution
and to maintain thread state, your program's "user
thread code" cannot rely on using all of the stack memory
If an error condition occurs, this routine returns an
integer value indicating the type of error. Possible
return values are as follows: Successful completion.
Functions: pthread_attr_getguardsize(3), pthread_attr_getstackaddr(3), pthread_attr_getstacksize(3),
Manuals: Guide to DECthreads and Programmer's Guide
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