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(const 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.

ATTRIBUTES

       For an explanation of the terms used in this section, see attributes(7).

       +-----------------------------+---------------+---------+
       |Interface		     | Attribute     | Value   |
       +-----------------------------+---------------+---------+
       |pthread_attr_setstacksize(), | Thread safety | MT-Safe |
       |pthread_attr_getstacksize()  |		     |	       |
       +-----------------------------+---------------+---------+
CONFORMING TO

       POSIX.1-2001, POSIX.1-2008.

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, 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 4.15 of the Linux man-pages project.  A description of the project, information about reporting bugs, and the
       latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.

Linux								    2017-09-15					      PTHREAD_ATTR_SETSTACKSIZE(3)