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.

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 downward, in violation of POSIX.1-2001, which says that the allocated
       stack will be at least stacksize bytes.

EXAMPLE

       See pthread_create(3).

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 3.54 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/.