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
   Multithreading (see pthreads(7))
       The pthread_attr_setstacksize() and pthread_attr_getstacksize() functions are thread-safe.

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 loca‐
       tion 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_set‐
       stack(3), pthread_create(3), pthreads(7)

COLOPHON
       This  page  is  part of release 3.74 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 http://www.kernel.org/doc/man-pages/.



Linux                                       2014-05-28               PTHREAD_ATTR_SETSTACKSIZE(3)