PTHREAD_ATTR_SETSTACKSIZE(3)                        Linux Programmer's Manual                       PTHREAD_ATTR_SETSTACKSIZE(3)



NAME
       pthread_attr_setstacksize, pthread_attr_getstacksize - set/get stack size attribute in thread attributes object

SYNOPSIS
       #include <pthread.h>

       int pthread_attr_setstacksize(pthread_attr_t *attr, size_t stacksize);
       int pthread_attr_getstacksize(pthread_attr_t *attr, size_t *stacksize);

       Compile and link with -pthread.

DESCRIPTION
       The  pthread_attr_setstacksize()  function  sets  the stack size attribute of the thread attributes object referred to by
       attr to the value specified in stacksize.

       The stack size attribute determines the minimum size (in bytes) that will be allocated  for  threads  created  using  the
       thread attributes object attr.

       The  pthread_attr_getstacksize() function returns the stack size attribute of the thread attributes object referred to by
       attr in the buffer pointed to by stacksize.

RETURN VALUE
       On success, these functions return 0; on error, they return a nonzero error number.

ERRORS
       pthread_attr_setstacksize() can fail with the following error:

       EINVAL The stack size is less than PTHREAD_STACK_MIN (16384) bytes.

       On some systems, pthread_attr_setstacksize() can fail with the error EINVAL if stacksize is not a multiple of the  system
       page size.

VERSIONS
       These functions are provided by glibc since version 2.1.

CONFORMING TO
       POSIX.1-2001.

EXAMPLE
       See pthread_create(3).

NOTES
       For details on the default stack size of new threads, see pthread_create(3).

       A thread's stack size is fixed at the time of thread creation.  Only the main thread can dynamically grow its stack.

       The pthread_attr_setstack(3) function allows an application to set both the size and location of a caller-allocated stack
       that is to be used by a thread.

BUGS
       As at glibc 2.8, if the specified stacksize is not a multiple of STACK_ALIGN (16 bytes on most architectures), it may  be
       rounded downwards, in violation of POSIX.1-2001, which says that the allocated stack will be at least stacksize bytes.

SEE ALSO
       getrlimit(2),    pthread_attr_init(3),    pthread_attr_setguardsize(3),    pthread_attr_setstack(3),   pthread_create(3),
       pthreads(7)

COLOPHON
       This page is part of release 3.25 of the Linux man-pages project.  A description of the project,  and  information  about
       reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.



Linux                                                      2008-11-05                               PTHREAD_ATTR_SETSTACKSIZE(3)