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PTHREAD_ATTR_SETSTACKSIZE(3Linux Programmer's ManuPTHREAD_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 speci‐
       fied 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_cre‐
       ate(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 down‐
       ward, 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 3.53 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				  2012-03-15	  PTHREAD_ATTR_SETSTACKSIZE(3)

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